Senior Site Reliability Engineer

🏢 Summary: Senior Java Backend Engineer role focused on building and operating production-grade, AI-enabled backend services within a global Advanced Analytics team. The position involves designing cloud-native microservices, standardizing APIs, and ensuring security, observability, and reliability in regulated environments. You will work cross-functionally and take end-to-end ownership from design to operations. 🗂️ Requirements: Proficiency in Java 17+, Experience with REST and SOAP APIs, Strong knowledge of JSON, YAML, XML, Experience with Docker and Kubernetes, Hands-on experience with AWS, Proficiency with SQL databases (DB2, PostgreSQL), Experience with Git and GitHub, Familiarity with CI/CD tools (Jenkins or GitHubActions or Nexus), Knowledge of Keycloak for authentication and authorization, Experience with Dynatrace or monitoring tools, Understanding of microservices architecture, Basic knowledge of AI technologies 📃 Skills: Java, REST, SOAP, JSON, YAML, XML, Git, GitHub, Docker, SQL, DB2, PostgreSQL, Maven, Kubernetes, AWS, Jenkins, GitHubActions, Nexus, Keycloak, Dynatrace, A3K, Airwave, CISL, Jira, Confluence, Copilot, Claude, AI 🏢 Description: About Webellian Webellian is a well-established Digital Transformation and IT consulting company committed to creating a positive impact for our clients. We strive to make a meaningful difference in diverse sectors such as insurance, banking, healthcare, retail, and manufacturing. Our passion for cutting-edge and disruptive technologies, as well as our shared values and strong principles, are what motivate us. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the position As a Senior Java Backend Engineer within Advanced Analytics in the Chief Data & AI Office, you will join the central AI team to build and maintain robust, production-grade AI-enabled services on a global scale. You will work in a cross-functional environment with ML Engineers, Platform Engineers, AI Architects, and DevOps, taking end-to-end ownership from design through reliable operations. In this role, you will help establish consistent engineering standards for security, observability, and delivery, and contribute to scalable internal platforms and shared services that accelerate teams worldwide. Key responsibilities Design, build, and maintain Java microservices forming the API layer: clean REST interfaces, robust domain models, and maintainable data access patterns using JPA/Hibernate or equivalent. Wrap and expose existing enterprise systems through well-defined service boundaries, enabling incremental modernization without wholesale replacement. Deliver cloud-native services using Docker and Kubernetes (AKS), with attention to scalability, resilience, and cost-efficiency. Build and maintain CI/CD pipelines with automated tests, quality gates, and secure delivery practices using GitHub Actions. Integrate and standardize API exposure via Azure API Management (APIM): usage policies, throttling, authentication/authorization, and versioning. Establish and maintain observability standards using Azure Monitor and Application Insights: dashboards, alerting, distributed tracing, and runbooks. Diagnose and resolve complex issues across microservices, clusters, and pipelines; perform root-cause analysis and preventative improvements. Embed security and resilience: secrets management via Azure Key Vault, least privilege, container security best practices, and disaster recovery patterns. Engineer for regulated environments: audit-friendly practices, traceable changes, reliable logging, and disciplined handling of sensitive data (minimization, access controls, retention). Collaborate with Python/AI engineers to define clear integration contracts between the Java API layer and the Python AI layer. Required Experience & Skills 5+ years professional backend engineering experience with Java in production environments. Expert-level Java; ideally Spring Boot (primary candidate) with real-world experience; familiarity with Quarkus or Micronaut is a plus. Strong engineering fundamentals: testing strategies (unit, integration, contract), REST API versioning, documentation, code quality, and pragmatic system design. Production experience with Docker and Kubernetes. Strong CI/CD experience (GitHub Actions preferred; ArgoCD or similar also relevant). Familiarity with Azure cloud platforms and services, particularly AKS, ACR, Key Vault, Azure Monitor/Application Insights, and Azure API Management (APIM). Strong experience with PostgreSQL including schema design, migrations (Flyway/Liquibase), and performance tuning fundamentals. Experience integrating with or wrapping legacy enterprise systems via REST, SOAP, or messaging. Familiarity with distributed systems and event-driven architectures using Kafka. Strong troubleshooting skills and an operational mindset. Ways of Working Comfortable in agile, iterative delivery environments with ownership and accountability. Clear communicator and collaborator across global, cross-functional stakeholders. Proactive learner with pragmatic adoption of AI-assisted developer tools (e.g., GitHub Copilot, Claude Code) to improve developer experience and delivery velocity. What we offer Contract under Polish law: B2B or Umowa o Pracę Benefits such as private medical care, group insurance, Multisport card English classes available Hybrid work (at least 1 day/week on-site) in Warsaw (Mokotów) Opportunity to work with excellent professionals High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site) Join a growing team of dedicated professionals! We love to pass on the knowledge to grow excellence, speak our minds without playing politics, and just enjoy hanging around together. If you share our passions - we want to meet you! So go ahead and apply ➡️

🏢 Summary: Senior Frontend Developer role focused on leading the architecture and development of AI-enabled web and iOS applications, owning the full frontend layer from design to production. The position involves building scalable React applications and native iOS apps, integrating with backend services, and driving performance, testing, and CI/CD standards. The role combines hands-on development with architectural leadership and mentoring responsibilities. 🗂️ Requirements: 6+ years of professional frontend development experience, Expert-level JavaScript and TypeScript, Expert-level React including hooks and state management, Strong native iOS development experience with Swift and SwiftUI, Experience integrating frontend applications with REST APIs, Knowledge of OAuth2 and JWT authentication mechanisms, Experience with frontend testing frameworks, Experience with frontend build tools, Ability to define frontend architecture and technical standards, Experience working with CI/CD pipelines 📃 Skills: JavaScript, TypeScript, React, Redux, Zustand, Swift, SwiftUI, UIKit, REST, OAuth2, JWT, CSS, Tailwind, StyledComponents, Emotion, Vite, Webpack, Jest, Vitest, Playwright, Cypress, XCTest, Fastlane, Xcode, Claude, CI/CD 🏢 Description: About Webellian Webellian is a well-established Digital Transformation and IT consulting company committed to creating a positive impact for our clients. We strive to make a meaningful difference in diverse sectors such as insurance, banking, healthcare, retail, and manufacturing. Our passion for cutting-edge and disruptive technologies, as well as our shared values and strong principles, are what motivate us. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the position As a Senior Frontend Developer within Advanced Analytics, you will lead the design and development of user-facing AI-enabled products across web and mobile platforms. You will own the frontend layer of production applications — building sophisticated React-based web interfaces and native iOS mobile experiences that bring AI capabilities directly to end users across the globe. Key responsibilities: Architect and build production-grade React web applications: component design, state management, routing, performance optimization, and accessibility (WCAG compliance). Develop native iOS applications using Swift and SwiftUI (or UIKit where required), delivering high-quality, App Store-ready mobile experiences. Define and enforce frontend architecture standards: folder structure, component libraries, design system integration, and code quality conventions across web and mobile. Integrate frontend applications with REST APIs and event-driven backends, handling authentication flows, error boundaries, loading states, and real-time data patterns. Implement robust frontend testing strategies: unit tests (Jest, Vitest), component tests (React Testing Library), end-to-end tests (Playwright or Cypress), and iOS XCTest suites. Lead frontend performance engineering: bundle optimization, lazy loading, rendering strategies (SSR, CSR, ISR), Core Web Vitals, and iOS app performance profiling. Own the mobile development lifecycle on iOS: from Xcode project configuration and provisioning profiles to TestFlight distribution and App Store submission. Collaborate with UX Designers to translate designs into pixel-perfect, responsive, and accessible interfaces on both web and iOS. Champion AI-augmented development workflows using Claude Code: apply it actively for prototyping, code review, refactoring, and documentation generation. Conduct thorough code reviews, contribute to architectural decision records (ADRs), and mentor junior and mid-level frontend engineers. Work with DevOps to integrate frontend build and deployment into CI/CD pipelines: web app deployments, iOS build automation (Fastlane), and release management. Required Experience & Skills 6+ years of professional frontend development experience, with a strong track record of shipping production applications at scale. Expert-level JavaScript and TypeScript: deep understanding of the language, async patterns, module systems, and type-safe application design. Expert-level React: hooks, context, state management (Redux Toolkit, Zustand, or equivalent), performance patterns, and large-scale component architecture. Strong native iOS development skills using Swift and SwiftUI; experience with UIKit is a plus. Solid experience with iOS-specific concerns: push notifications, background processing, Keychain, deep linking, and App Store review guidelines. Experience consuming and designing frontend integrations with REST APIs, including authentication (OAuth2, JWT), error handling, and data caching strategies. Strong CSS and layout skills: responsive design, CSS-in-JS (Styled Components, Emotion), or utility-first frameworks (Tailwind CSS). Experience with frontend build tooling: Vite, Webpack, or equivalent; understanding of bundling, tree-shaking, and deployment optimization. Hands-on proficiency with Claude Code: using it daily for development, debugging, refactoring, and documentation tasks. Proven ability to define architecture, set standards, and lead technical decisions in a senior individual contributor or tech lead capacity. Strong communication skills: able to collaborate effectively with designers, product managers, and backend engineers across global, distributed teams. What we offer Contract under Polish law: B2B or Umowa o Pracę Benefits such as private medical care, group insurance, Multisport card English classes available Hybrid work (at least 1 day/week on-site) in Warsaw (Mokotów) Opportunity to work with excellent professionals High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site) Join a growing team of dedicated professionals! We love to pass on the knowledge to grow excellence, speak our minds without playing politics, and just enjoy hanging around together. If you share our passions - we want to meet you! So go ahead and apply ➡️

🏢 Summary: Full Stack Technical Lead role focused on leading an engineering team delivering cloud-native digital insurance products. The position combines hands-on backend and frontend development with ownership of application architecture, API design, and technical standards. You will drive technical direction, ensure delivery quality, and collaborate closely with product, platform engineering, and business stakeholders. 🗂️ Requirements: 7+ years professional software engineering experience, Minimum 2 years in a technical leadership role, Strong backend development experience in Java and Spring Boot or equivalent, Frontend development experience in React or equivalent, Experience designing microservices architectures and REST APIs at production scale, Understanding of distributed system patterns, Experience designing services for Kubernetes environments, Familiarity with CI/CD and GitOps deployment models, Experience leading Agile sprint delivery and technical scoping, Experience in regulated industries such as insurance, finance, or healthcare 📃 Skills: Java, Spring, SpringBoot, React, Microservices, REST, Kubernetes, CI/CD, GitOps, Kafka, Azure, API, Docker 🏢 Description: About Webellian Webellian is a well-established Digital Transformation and IT consulting company committed to creating a positive impact for our clients. We strive to make a meaningful difference in diverse sectors such as insurance, banking, healthcare, retail, and manufacturing. Our passion for cutting-edge and disruptive technologies, as well as our shared values and strong principles, are what motivate us. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the position As a Full Stack Technical Lead you will lead an engineering team building digital insurance products and services. You are the technical authority for your team: you own the application architecture, set the engineering standards, and are responsible for the quality of everything the team ships. You will work within a cloud-native engineering environment where CI/CD pipelines, containerisation standards, and deployment tooling are provided centrally. Your role is to lead the application layer (service design, API architecture, and team delivery), not to own infrastructure. You are the primary technical interface between your product team and the central platform engineering function, and between engineering and the wider product and business stakeholders. This is a hands-on technical leadership role. You will be expected to remain close to the code while carrying the responsibility for the team's technical direction and delivery quality. Key responsibilities: Architecture and Technical Direction Own the application architecture for your product: service decomposition, API design, data models, event schemas, and integration patterns with core insurance systems. Make architectural decisions that are durable, well-reasoned, and clearly communicated to the team and stakeholders. Identify and manage technical debt: prioritise pragmatically, document trade-offs, and schedule remediation in delivery planning. Define technical standards for the team (coding conventions, testing practices, API versioning, observability instrumentation) and hold the team to them. Work within the deployment and containerisation standards provided by the central engineering platform; raise and influence changes to those standards through the appropriate channels. Delivery Leadership Translate business and product requirements into technical designs; lead estimation and scope definition. Identify and communicate technical risk early; propose mitigations and make trade-offs transparent to the Product Owner. Collaborate with the Scrum Master on sprint planning to ensure technical work is appropriately sized, dependency-mapped, and sequenced. Represent engineering in architecture reviews, sprint reviews, and stakeholder discussions. Interface with the central platform engineering team on technical questions, onboarding requirements, and issue escalations. Team and Code Quality Own the code review process: set the bar, lead by example, and ensure reviews are substantive and timely. Mentor mid-level and senior engineers: support their technical growth through pairing, design discussion, and structured feedback. Build a team culture of ownership, quality, and continuous improvement; facilitate retrospective follow-through on engineering practices. Onboard new engineers to the codebase, standards, and ways of working. Collaboration Collaborate with frontend Tech Leads and other domain teams on cross-cutting API contracts and shared integration points. Work with the Product Owner on roadmap planning: provide clear technical input on feasibility, effort, and sequencing. Communicate clearly across technical and non-technical stakeholders; translate engineering complexity into business-relevant language. Required Experience & Skills 7+ years of professional software engineering experience, with at least 2 years in a technical leadership role (Tech Lead, Principal Engineer, or equivalent). Deep backend development experience: Java (Spring Boot) or equivalent, able to review, design and contribute to production code. Frontend experience: React or equivalent, able to review and contribute to production code. Capable of participating meaningfully in cross-functional technical discussions spanning frontend, BFF, and backend layers. Microservices architecture: service boundary design, API design and versioning, distributed system patterns (eventual consistency, idempotency, retry strategies). REST API design at production scale: resource modelling, contract versioning, backward compatibility, error handling conventions. Kubernetes-aware service design: designing services to run well in Kubernetes (readiness/liveness probes, graceful shutdown, resource requests, horizontal scaling). You do not need to operate the cluster. CI/CD and GitOps familiarity: understanding of pipeline-based and pull-based deployment models; able to work within and influence deployment standards. Agile delivery leadership: experience leading a team through sprint delivery, dependency management, and technical scoping in a product-led environment. Regulated industry experience: insurance, finance, or healthcare. Understands the implications of audit logging, data residency, access control, and compliance requirements on engineering decisions. Strong communicator: able to lead technical discussions, document architectural decisions clearly, and represent engineering credibly to non-technical audiences. Ways of Working Leads by example: stays close to the code and models the quality and rigour expected from the team. Collaborative and direct: shares context freely, gives clear feedback, and creates an environment where engineers can raise concerns and propose improvements. Pragmatic: balances technical correctness with delivery reality; makes trade-offs explicitly rather than silently. Comfortable with ambiguity: can scope and lead work in areas where requirements are still forming, and knows how to structure discovery to reduce uncertainty. Proactive learner: keeps up with backend and cloud-native ecosystem developments; comfortable adopting AI-assisted developer tools (e.g. GitHub Copilot, Claude Code) to improve team productivity. Nice to Have Insurance or financial services domain knowledge: understanding of claims, policy, or payment workflows. Experience integrating AI or ML services into production business logic: consuming model outputs, handling confidence thresholds, building human-in-the-loop workflows. Event-driven architecture experience: Kafka or equivalent at production scale. Cloud certifications: AZ-204 (Azure Developer), AZ-305 (Azure Solutions Architect), or equivalent. Experience leading distributed or multi-vendor engineering teams. What we offer Contract under Polish law: B2B or Umowa o Pracę Benefits such as private medical care, group insurance, Multisport card Hybrid work (at least 1 day per 2 or 3 months on-site) in Warsaw (Mokotów) Opportunity to work with excellent professionals High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site) Join a growing team of dedicated professionals! We love to pass on the knowledge to grow excellence, speak our minds without playing politics, and just enjoy hanging around together. If you share our passions - we want to meet you! So go ahead and apply ➡️

🏢 Summary: 6-month DevOps Engineer Internship supporting CI/CD, cloud environments, and infrastructure automation for an international client. The role focuses on maintaining deployment pipelines, monitoring systems, and assisting with cloud-based infrastructure tasks. Ideal for students seeking hands-on experience in modern DevOps and cloud practices. 🗂️ Requirements: Enrolled in Bachelor or Master degree in Computer Science, Software Engineering, IT, or related field, English proficiency minimum B2, Basic knowledge of Linux or operating systems, Basic understanding of networking fundamentals, Basic understanding of CI/CD concepts, Familiarity with Git and version control systems 📃 Skills: Linux, Networking, HTTP, DNS, Git, CI/CD, Azure, AWS, GCP, Docker, Bash, PowerShell, Python, Agile, Scrum 🏢 Description: About Webellian Webellian is a well-established Digital Transformation and IT consulting company committed to creating a positive impact for our clients. We strive to make a meaningful difference in diverse sectors such as insurance, banking, healthcare, retail, and manufacturing. Our passion for cutting-edge and disruptive technologies, as well as our shared values and strong principles, are what motivate us. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the position We are seeking a DevOps Engineer Intern to join our team for a project with a key international client. The intern will support the DevOps and engineering teams in maintaining, monitoring, and improving development and deployment processes. You will work alongside experienced DevOps engineers and software developers, gaining hands-on experience with cloud platforms, CI/CD pipelines, and infrastructure automation. This role is ideal for someone interested in how software is built, deployed, and operated in modern cloud environments. Requirements Being enrolled in a Bachelor or Master degree in computer science, software engineering, IT, or a related technical field Good English communication skills (B2+), Polish language is a plus Basic understanding of Linux / operating systems Basic knowledge of networking fundamentals (HTTP, DNS, ports, protocols) Basic understanding of CI/CD concepts Familiarity with Git and version control systems Basic knowledge of cloud platforms (Azure, AWS, or GCP) is a plus Basic exposure to Docker or container concepts is a plus Interest in automation, scripting, and infrastructure (Bash, PowerShell, Python – nice to have) Analytical mindset and problem-solving skills Attention to detail and responsibility Independence and strong willingness to learn Any academic, personal, or internship experience related to DevOps, cloud, or system administration is considered an asset Familiarity with Agile/Scrum methodologies is a plus *As an intern, you’re not expected to be an expert. What is really important is your will and ability to expand your skills during the internship and contribute actively to the company. Key responsibilities Support the DevOps team in maintaining CI/CD pipelines Assist in monitoring applications, systems, and cloud environments Help with basic infrastructure configuration and deployment tasks Support automation of repetitive tasks and processes Assist in troubleshooting deployment, build, and runtime issues Help maintain documentation related to infrastructure and processes Collaborate with developers to support development and release workflows Participate in improving system reliability, performance, and security What we offer 6 month internship Opportunity to work with excellent professionals, in a professional and friendly environment High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site) About you: Open-minded and eager to learn Autonomous and not afraid to ask questions Business oriented and looking to bring solutions Capable of detailed and analytical thinking Ready to take responsibilities and have an impact on companies’ projects BE BOLD In your CV, please include the following information: Why would you like to join us? Do you have something to share with us? (portfolio, projects, ideas, …)

🏢 Summary: Automation-focused Lead QA Engineer role for an insurance project, responsible for designing and maintaining automated test solutions and ensuring high quality standards across the SDLC. The position involves leading QA strategy, coordinating testing activities, and collaborating closely with development teams and stakeholders. The role also includes improving testing processes and introducing new tools and standards where applicable. 🗂️ Requirements: Minimum 5 years of QA experience, Strong automation testing expertise, Hands-on experience with Playwright, Experience with API testing, Experience with Postman, Experience with Jira and Confluence, Knowledge of QA methodologies and test strategies, Experience defining QA standards and processes, Experience in Agile/Scrum environments, BSc/BA in Computer Science, Engineering or related field, Fluency in English 📃 Skills: Playwright, Postman, Jira, Confluence, API, Automation, Testing, OWASP, ISO27034, Agile, Scrum, SDLC 🏢 Description: About Webellian Webellian is a well-established Digital Transformation and IT consulting company committed to creating a positive impact for our clients. We strive to make a meaningful difference in diverse sectors such as insurance, banking, healthcare, retail, and manufacturing. Our passion for cutting-edge and disruptive technologies, as well as our shared values and strong principles, are what motivate us. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the position We are seeking an experienced Lead Quality Assurance Engineer with a minimum of five years of professional experience to join our team for a project with a key client in the insurance industry. This position is automation-focused, with automated testing forming the core of daily responsibilities, complemented by limited manual testing activities to support overall product quality. The successful candidate will play a critical role in designing, developing, and maintaining automated test solutions while ensuring high quality standards throughout the software development lifecycle. You will collaborate closely with development teams, product stakeholders, and clients to ensure that delivered solutions meet defined functional, technical, and quality requirements. Depending on your experience, you will also have the opportunity to introduce new testing tools and actively contribute to improving testing strategies and quality processes, including but not limited to OWASP and ISO/IEC 27034. Key responsibilities Analyze requirements and ensure testability Prepare test strategies, plans, and automation approach Design, develop, and execute automated and manual tests Identify, track, and support resolution of defects Perform troubleshooting and root cause analysis Support releases, production deployments, and post-release validation Ensure product quality throughout the software development lifecycle Collaborate with development teams, clients, and stakeholders Mentor QA engineers and support knowledge sharing Coordinate QA activities and testing priorities across teams Define QA standards, processes, and quality strategy Drive continuous improvement of QA and automation practices Competencies Proven experience as a Quality Assurance Engineer / Lead QA with strong automation testing expertise Solid understanding of QA methodologies, test strategy, and software testing best practices Hands-on experience with Playwright (experience with additional languages or frameworks is considered an asset) Experience with API testing tools such as Postman Practical experience with Jira and Confluence Strong analytical and problem-solving skills High attention to detail and quality ownership mindset Critical thinking and proactive approach to quality improvement Independence, accountability, and ability to drive QA initiatives Experience mentoring team members and supporting knowledge sharing within the team Experience coordinating testing activities or guiding QA efforts across projects Experience in direct client communication, gathering requirements, and providing quality-related feedback Ability to define and promote QA standards, processes, and best practices BSc/BA in Computer Science, Engineering, or a related field Software development experience will be considered an additional asset Excellent verbal communication and stakeholder management skills Experience working in Agile/Scrum environments Fluency in English What we offer Contract under Polish law: B2B or Umowa o Pracę Benefits such as private medical care, group insurance, Multisport card There are English classes available Hybrid work (at least 3 days/week on-site) in Warsaw (Mokotów) Opportunity to work with excellent professionals High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site) Interested? Please click the “Apply for this job” button and send us your CV in English.

🏢 Summary: The offer is for an experienced Quality Assurance Engineer to work on an insurance industry project, ensuring software quality through manual and automated testing. The role involves creating test strategies, executing tests, reporting defects, and supporting production deployments within an Agile environment. The position also includes contributing to testing standards and security practices such as OWASP and ISO/IEC 27034. 🗂️ Requirements: Minimum 5 years of experience as a Quality Assurance Engineer, Proven experience in QA methodology, Experience in preparing test strategies and test plans, Experience in manual and automated testing, Hands-on experience with Postman and Cypress, Hands-on experience with Jira and Confluence, Experience with Agile/Scrum methodologies, Ability to document and troubleshoot errors, BSc/BA in Computer Science, Engineering or related field, Fluency in English 📃 Skills: Postman, Cypress, Jira, Confluence, OWASP, ISO27034, Agile, Scrum, ManualTesting, AutomatedTesting 🏢 Description: About the Webellian Webellian is a well-established Digital Transformation and IT consulting company committed to creating a positive impact for our clients. We strive to make a meaningful difference in diverse sectors such as insurance, banking, healthcare, retail, and manufacturing. Our passion for cutting-edge and disruptive technologies, as well as our shared values and strong principles, are what motivate us. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the position We are seeking an experienced Quality Assurance Engineer with a minimum of five years of professional experience to join our team for a project with a key client in the insurance industry. This position is automation-focused, with automated testing forming the core of daily responsibilities, complemented by limited manual testing activities to support overall product quality. The successful candidate will play a critical role in designing, developing, and maintaining automated test solutions while ensuring high quality standards throughout the software development lifecycle. You will collaborate closely with development teams, product stakeholders, and clients to ensure that delivered solutions meet defined functional, technical, and quality requirements. Depending on your experience, you will also have the opportunity to introduce new testing tools and actively contribute to improving testing strategies and quality processes, including but not limited to OWASP and ISO/IEC 27034. Key responsibilities Analyze system specifications and requirements Prepare test strategies and automation-focused test plans Design, develop, and maintain automated tests Execute automated tests and analyze results Perform manual testing when required to support releases Identify, document, and track defects Collaborate with development teams to resolve issues Communicate directly with clients, gather requirements, and provide quality-related feedback Mentor team members and support knowledge sharing within the QA team Support troubleshooting and root cause analysis Conduct post-release testing and verification Ensure quality throughout the software development lifecycle Support production deployments and post-deployment validation Contribute to continuous improvement of QA processes and automation practices Competencies Proven experience as a Quality Assurance Engineer with strong automation testing expertise Solid understanding of QA methodologies and software testing best practices Hands-on experience with Playwright (experience with additional languages or frameworks is considered an asset) Experience with API testing tools such as Postman Practical experience with Jira and Confluence Strong analytical and problem-solving skills High attention to detail and accuracy Critical thinking and proactive approach to quality Independence, ownership mindset, and willingness to continuously learn Experience mentoring team members and supporting knowledge sharing within the team Experience in direct client communication, gathering requirements, and providing quality-related feedback BSc/BA in Computer Science, Engineering, or a related field Software development experience will be considered an additional asset Excellent verbal communication skills Experience working in Agile/Scrum environments Fluency in English What we offer Contract under Polish law: B2B or Umowa o Pracę Benefits such as private medical care, group insurance, Multisport card There are English classes available Hybrid work (at least 3 days/week on-site) in Warsaw (Mokotów) Opportunity to work with excellent professionals High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site) Interested? Please click the “Apply for this job” button and send us your CV in English.

🏢 Summary: Automation-focused Quality Assurance Engineer role for an insurance industry project, responsible for designing, developing, and maintaining automated test solutions while ensuring high quality standards across the software development lifecycle. The position involves close collaboration with development teams and clients, with opportunities to improve testing strategies and introduce new tools. Limited manual testing complements core automation responsibilities. 🗂️ Requirements: Minimum 5 years of experience as a Quality Assurance Engineer, Strong experience in automation testing, Hands-on experience with Playwright, Experience with API testing tools, Experience with Jira and Confluence, Understanding of QA methodologies and software testing best practices, Experience working in Agile/Scrum environments, BSc/BA in Computer Science, Engineering, or related field, Fluency in English 📃 Skills: Playwright, Postman, Jira, Confluence, OWASP, ISO27034, Agile, Scrum, API, Testing 🏢 Description: About the Webellian Webellian is a well-established Digital Transformation and IT consulting company committed to creating a positive impact for our clients. We strive to make a meaningful difference in diverse sectors such as insurance, banking, healthcare, retail, and manufacturing. Our passion for cutting-edge and disruptive technologies, as well as our shared values and strong principles, are what motivate us. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the position We are seeking an experienced Quality Assurance Engineer with a minimum of five years of professional experience to join our team for a project with a key client in the insurance industry. This position is automation-focused, with automated testing forming the core of daily responsibilities, complemented by limited manual testing activities to support overall product quality. The successful candidate will play a critical role in designing, developing, and maintaining automated test solutions while ensuring high quality standards throughout the software development lifecycle. You will collaborate closely with development teams, product stakeholders, and clients to ensure that delivered solutions meet defined functional, technical, and quality requirements. Depending on your experience, you will also have the opportunity to introduce new testing tools and actively contribute to improving testing strategies and quality processes, including but not limited to OWASP and ISO/IEC 27034. Key responsibilities Analyze system specifications and requirements Prepare test strategies and automation-focused test plans Design, develop, and maintain automated tests Execute automated tests and analyze results Perform manual testing when required to support releases Identify, document, and track defects Collaborate with development teams to resolve issues Communicate directly with clients, gather requirements, and provide quality-related feedback Mentor team members and support knowledge sharing within the QA team Support troubleshooting and root cause analysis Conduct post-release testing and verification Ensure quality throughout the software development lifecycle Support production deployments and post-deployment validation Contribute to continuous improvement of QA processes and automation practices Competencies Proven experience as a Quality Assurance Engineer with strong automation testing expertise Solid understanding of QA methodologies and software testing best practices Hands-on experience with Playwright (experience with additional languages or frameworks is considered an asset) Experience with API testing tools such as Postman Practical experience with Jira and Confluence Strong analytical and problem-solving skills High attention to detail and accuracy Critical thinking and proactive approach to quality Independence, ownership mindset, and willingness to continuously learn Experience mentoring team members and supporting knowledge sharing within the team Experience in direct client communication, gathering requirements, and providing quality-related feedback BSc/BA in Computer Science, Engineering, or a related field Software development experience will be considered an additional asset Excellent verbal communication skills Experience working in Agile/Scrum environments Fluency in English What we offer Contract under Polish law: B2B or Umowa o Pracę Benefits such as private medical care, group insurance, Multisport card There are English classes available Hybrid work (at least 3 days/week on-site) in Warsaw (Mokotów) Opportunity to work with excellent professionals High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site) Interested? Please click the “Apply for this job” button and send us your CV in English.

🏢 Summary: Senior AI/Full Stack Engineer role focused on building and delivering AI-powered web applications that integrate LLMs, RAG pipelines, and modern full-stack technologies. The position combines hands-on AI/ML implementation with TypeScript-based backend and React frontend development. You will design, deploy, and optimize intelligent systems running on cloud and self-hosted infrastructure. 🗂️ Requirements: 5+ years of full-stack development experience, Hands-on experience with LLM deployment and serving (cloud APIs or self-hosted), Experience building RAG systems including embeddings and vector stores, Understanding of prompt engineering and agent/tool-use patterns, Ability to evaluate model performance and make trade-off decisions, Strong experience with TypeScript and Node.js, Experience with Nest.js, Frontend development experience with React, Experience with relational databases such as PostgreSQL, Experience working with Redis, Experience using Docker, Basic knowledge of CI/CD pipelines 📃 Skills: TypeScript, Node.js, Nest.js, React, PostgreSQL, Redis, Docker, CI/CD, LLM, RAG, Embeddings, VectorDB, APIs 🏢 Description: About Webellian Webellian is a well-established Digital Transformation and IT consulting company committed to creating a positive impact for our clients. We strive to make a meaningful difference in diverse sectors such as insurance, banking, healthcare, retail, and manufacturing. Our passion for cutting-edge and disruptive technologies, as well as our shared values and strong principles, are what motivate us. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the role We are seeking a Senior AI/Full Stack Engineer to join our team and drive the development of AI-powered solutions for our clients. You will work on projects that combine modern web development with applied AI - from building intelligent agents and search systems to deploying and optimizing language models on dedicated infrastructure. This role bridges two worlds: solid full-stack engineering and practical AI/ML implementation. You'll design, build, and ship products that leverage LLMs, RAG, and other AI techniques to solve real business problems. Your responsibilities Designing and developing full-stack applications with AI capabilities Deploying, configuring, and optimizing LLMs (both cloud APIs and self-hosted) Building and maintaining RAG pipelines, vector search, and knowledge retrieval systems Integrating AI systems with external services and APIs Evaluating and selecting appropriate models and tools for specific use cases Writing clean, maintainable code with tests and documentation Proposing technical improvements and architectural decisions Supporting and mentoring less experienced team members Must-have requirements AI/ML: Hands-on experience with LLM deployment and serving (cloud APIs and/or self-hosted solutions) Experience building RAG systems (embeddings, vector stores, retrieval strategies) Understanding of prompt engineering and agent/tool-use patterns Ability to evaluate model performance and make informed trade-off decisions Full Stack: 5+ years in full-stack development with TypeScript/Node.js, Nest.js Frontend experience with React Relational databases (PostgreSQL or similar), Redis Docker, basic CI/CD Soft skills: Self-driven, able to take ownership of projects end-to-end Strong problem-solving skills English B2+ (C1 preferred) Excellent communication - able to translate technical concepts for non-technical stakeholders Nice-to-have Experience with model fine-tuning (LoRA, QLoRA) MLOps practices (experiment tracking, model versioning) Familiarity with agent frameworks (LangChain, Vercel AI SDK, or similar) Experience with GPU infrastructure and model optimization (quantization, inference tuning) AWS or other cloud provider (working knowledge) What we offer Projects at the intersection of AI and software engineering Opportunity to work with cutting-edge AI tooling and local GPU infrastructure Autonomy and ownership over technical decisions Hybrid work mode Small, collaborative team Challenging problems - no boring CRUD work

🏢 Summary: Mid Java Engineer role focused on developing and maintaining a server-side rendered Java application for the insurance domain, primarily backend-oriented (80–90%). The position involves building new features, maintaining existing components, and deploying WAR-based applications integrated with multiple enterprise systems. The engineer collaborates in an international Agile team to deliver high-quality, scalable backend solutions. 🗂️ Requirements: Minimum 3 years of experience with Java, Experience with JDBC and plain SQL, Experience with Oracle databases, Knowledge of JAXB and XStream, Experience with Maven, Experience with Apache Tomcat and WAR deployments, Familiarity with enterprise application stacks, Experience with Agile/Scrum methodologies, Fluency in English 📃 Skills: Java, JDBC, SQL, Oracle, JAXB, XStream, Maven, Tomcat, WAR, Servlets, JSP, JSTL, jQuery, CSS 🏢 Description: ​​​​ About Webellian Webellian is a well-established Digital transformation and IT consulting company committed to creating a positive impact for our clients. We are driven by shared values, strong principles, and a passion for innovative and disruptive technologies. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the position We are looking for a Mid Java Engineer with at least 3 years of experience to join an international team working for one of our customers - a leader in the insurance industry. As a Mid Java Engineer, you will work on the development and maintenance of a server-side rendered (SSR) Java application, which constitutes the core of the system (approximately 80–90% backend/server-side logic). The frontend layer represents around 10–20% of the application and is implemented mainly to complement UI limitations of the Java server-side technology stack. You will contribute to an internal business application integrated with multiple enterprise systems and tailored to complex insurance processes. You will collaborate with teammates located in Poland and across Europe, working closely with product owners and application users. Key responsibilities Development of new application features Maintenance and enhancement of existing system components Application testing and debugging Application deployment and packaging (WAR-based deployments) Writing clean, maintainable backend code Preparing technical documentation Proposing technical improvements and optimizations Competencies Java JDBC / plain SQL (mainly Oracle database) JAXB, XStream Maven Apache Tomcat (WAR packaging & deployment) Internal engines: Kernel, PriceEngine, CalculationEngine Nice to have Servlets & JSP, JSTL jQuery, CSS T-Konfigurator (TKUI) Experience working with SSR applications Other requirements Familiarity with databases Familiarity with common enterprise application stacks Great attention to detail Experience with Agile/Scrum methodologies is a must Fluency in English is a must Excellent verbal communication skills are a must Independence and drive to grow and learn What we offer Contract under Polish law: B2B or Umowa o Pracę Benefits such as private medical care, group insurance, Multisport card English classes available Hybrid work (at least 3 days/week on-site) in Warsaw (Mokotów) Opportunity to work with excellent professionals High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site) Join a growing team of dedicated professionals! We love to pass on the knowledge to grow excellence, speak our minds without playing politics, and just enjoy hanging around together. If you share our passions - we want to meet you! So go ahead and apply ➡️

🏢 Summary: Senior Full Stack Engineer role focused on building and delivering scalable, mission-critical applications using Node.js and React. The position involves end-to-end ownership from design and architecture to deployment and production support within Agile environments. The role requires strong technical leadership, architectural involvement, and collaboration with cross-functional and customer-facing teams. 🗂️ Requirements: Minimum 6 years of commercial Full Stack development experience, Strong knowledge of Node.js and React, Proficiency in JavaScript and TypeScript, Experience working in Agile environments, Experience with AWS and Docker, Experience with PostgreSQL, Experience with Git or Bitbucket and Jenkins, Familiarity with REST APIs and GraphQL, Knowledge of SQL and NoSQL databases, Understanding of software architecture, design patterns, and SOLID principles, Experience with SDLC processes end-to-end, Fluency in English (minimum B2), Master’s degree in Computer Science, Software Engineering, or related field 📃 Skills: JavaScript, TypeScript, Node.js, React, AWS, Docker, PostgreSQL, Git, Bitbucket, Jenkins, REST, GraphQL, SQL, NoSQL, Azure, ReactNative, Expo 🏢 Description: About Webellian Webellian is a well-established Digital transformation and IT consulting company committed to creating a positive impact for our clients. We are driven by shared values, strong principles, and a passion for innovative and disruptive technologies. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy. About the job We are actively looking for a Senior Full Stack Engineer (Node.js & React). In this role, you will own technical responsibilities from conception to delivery. As a Senior Full Stack Engineer, you will collaborate closely with engineering teams, interact directly with customers and stakeholders, work on mission-critical systems at scale, and support the SDLC process end-to-end. This role requires a strong ownership mindset and readiness to take technical responsibility for project delivery, including participation in architectural discussions and technical decision-making. To be successful in this position, you should have at least 6 years of commercial experience in Full Stack development, strong understanding of Node.js, React, and related frameworks, and experience working within Agile engineering environments. Key responsibilities Analyze business and technical functional and non-functional requirements Design and develop clean, maintainable, and scalable code, including unit tests Prepare and maintain technical documentation Propose and implement technical improvements to applications and development processes Participate in troubleshooting and resolving complex technical issues Collaborate with other engineering teams to design and implement technical solutions Contribute to architectural and technical decision-making processes Support SDLC activities end-to-end, including development, testing, deployment, and production support Take ownership of technical delivery Competencies Master’s degree in Software Engineering, Computer Science, or related technical field Must-have Technologies: JavaScript, TypeScript, Node.js, React Advantage: React Native, Expo, Microsoft Azure Fluency in English is required (minimum B2, C1 preferred) Excellent verbal and written communication skills Experience working with AWS, Docker, PostgreSQL, Git/Bitbucket, and Jenkins Familiarity with REST APIs and GraphQL Familiarity with SQL and NoSQL databases Strong understanding of Agile methodologies and SDLC practices Understanding of software architecture trade-offs, scalability considerations, design patterns, and SOLID principles Leadership mindset: previous experience in technically leading projects, participating in architectural decision-making, and taking responsibility for the technical delivery process Experience working in customer-facing or international environments Nice to have Experience with CI/CD pipelines and deployment automation for web and mobile applications (e.g., EAS Build for Expo) Experience in scaling applications and handling high-traffic workloads Experience with cloud-native architectures and distributed systems Familiarity with monitoring, observability, and production troubleshooting practices Experience in fintech or insuretech environments What we offer Contract under Polish law: B2B or Umowa o Pracę Benefits such as private medical care, group insurance, Multisport card There are English classes available Hybrid work (at least 3 days/week on-site) in Warsaw (Mokotów) Opportunity to work with excellent professionals High standards of work and focus on the quality of code New technologies in use Continuously learning and growth International team Pinball, PlayStation & much more (on-site 🤫) Interested? Please click the “Apply for this job” button and send us your CV in English. Please include the following statement: I hereby authorize Webellian Poland Sp. z o.o. to the process personal data provided in this document for realising the recruitment process pursuant to the Personal Data Protection Act of 10 May 2018 (Journal of Laws 2018, item 1000) and in agreement with Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation).