Senior Fullstack Engineer (Node.js, Vue.js) (B2B)

🏢 Summary: Senior Fullstack Engineer role focused on building internal developer platforms, tools, and services that improve developer productivity, workflow automation, and system visibility in an enterprise environment. The position involves backend and frontend development, architectural decision-making, cloud infrastructure collaboration, and continuous improvement initiatives. The offer includes professional development opportunities, language courses, and a flexible benefits platform. 🗂️ Requirements: Completed degree in Computer Science, Data Science, Mathematics, or related technical field, 5+ years of fullstack software development experience, Strong knowledge of TypeScript, Strong knowledge of Node.js, Experience with NestJS, Experience building frontend applications with Vue or Nuxt, Understanding of event-driven architectures, Knowledge of Kafka, Experience with AWS cloud services, Experience with CI/CD pipelines, Knowledge of Terraform or AWS CDK, Ability to participate in system architecture and technical design discussions, English proficiency, Polish proficiency, Availability to work in a hybrid model in Katowice 📃 Skills: TypeScript, Node.js, NestJS, Vue, Nuxt, Kafka, AWS, ECS, EKS, EC2, IAM, Lambda, GitLab, Terraform, CDK, CI/CD 🏢 Description: Responsibilities We are looking for a practical and collaborative Senior Fullstack Engineer to join the Developer Experience (DX) team in a large enterprise environment. The role focuses on building internal developer platforms , tools, and services that improve developer productivity, system visibility, and workflow automation. You will play a key role in shaping engineering solutions, making technical decisions, and driving improvements across the developer ecosystem. Design and maintain backend services and APIs using TypeScript , Node.js , and NestJS , while making architectural decisions and evaluating trade-offs. Build and support frontend applications using Vue and Nuxt , ensuring good developer-facing UX. Develop internal tools and platforms that improve developer productivity , system visibility , and workflow automation. Evaluate technical solutions, balancing cost, performance, complexity, and maintainability . Collaborate with DevOps engineers on cloud infrastructure , CI/CD , and observability integration. Troubleshoot issues, perform root cause analysis , and drive continuous improvements. Build POCs to validate new technologies and drive experimentation. Benefits Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. Language Courses – you'll have access to a multi-language learning platform enabling you to practice you language skills and learn new ones! Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Qualifications Completed university degree in Computer Science , Data Science, Mathematics, or a related technical field. Strong background in fullstack software development (5+ years) with hands-on delivery of production systems. Solid command of TypeScript , Node.js , and backend frameworks such as NestJS . Practical knowledge of building frontend applications using Vue or Nuxt . Good understanding of event-driven architectures and messaging systems such as Kafka . Familiarity with cloud environments (AWS: ECS, EKS, EC2, IAM, Lambda) and how services are deployed and operated. Working knowledge of CI/CD pipelines (GitLab CI) and Infrastructure as Code (Terraform / AWS CDK) . Ability to work with technical design discussions, system architecture topics, and cross-team engineering challenges. Strong communication skills in English and Polish , with readiness to work in a hybrid model in Katowice . About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "

🏢 Summary: Fullstack Engineer role focused on building internal developer platforms, automation tools, and services that improve developer productivity in an enterprise environment. The position involves backend development with Node.js and NestJS, frontend development with Vue and Nuxt, and collaboration on cloud, CI/CD, and observability solutions. The role also includes debugging production systems, evaluating new technologies, and working with cross-functional teams. 🗂️ Requirements: 3+ years of experience in fullstack web application development, University degree in Computer Science, Data Science, Mathematics, or related technical field, Knowledge of TypeScript, Experience with Node.js, Experience with NestJS, Ability to build frontend applications using Vue or Nuxt, Understanding of event-driven systems, Knowledge of Kafka, Familiarity with AWS cloud services, Understanding of CI/CD pipelines, Knowledge of Terraform or AWS CDK, Experience with debugging production systems, Ability to work in distributed environments, English proficiency, Polish proficiency, Readiness to work in a hybrid model in Katowice 📃 Skills: TypeScript, Node.js, NestJS, Vue, Nuxt, Kafka, AWS, GitLab, Terraform, CDK, CI/CD 🏢 Description: Responsibilities We are looking for a practical and collaborative Fullstack Engineer to join the Developer Experience (DX) team in a large enterprise environment. The role focuses on building internal developer platforms, tools, and services that improve developer productivity, system visibility, and workflow automation. You will contribute to developing and maintaining solutions that support engineering teams and improve development processes. Develop backend services and APIs using TypeScript , Node.js , and NestJS . Build frontend applications using Vue and Nuxt . Contribute to internal tools that improve developer productivity and automation. Work with DevOps engineers on cloud , CI/CD , and observability integration. Support debugging and root cause analysis of application issues. Participate in POCs and evaluation of new technologies. Collaborate with technical and non-technical stakeholders. Qualifications 3+ years of experience in fullstack development delivering web-based applications. Completed university degree in Computer Science , Data Science, Mathematics, or a related technical field. Good knowledge of TypeScript , Node.js , and frameworks such as NestJS . Ability to build frontend features using Vue or Nuxt . Understanding of event-driven systems and messaging tools like Kafka . Familiarity with AWS cloud services and how modern applications are deployed. Awareness of CI/CD pipelines (GitLab CI) and Infrastructure as Code (Terraform / AWS CDK) . Exposure to production systems, debugging, and working in distributed environments. Strong communication skills in English and Polish , with readiness to work in a hybrid model in Katowice . About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "

🏢 Summary: Fullstack Engineer role focused on building internal developer platforms, automation tools, and services that improve developer productivity in an enterprise environment. The position involves backend development with TypeScript, Node.js, and NestJS, frontend development with Vue and Nuxt, and collaboration on cloud, CI/CD, and observability solutions. The role also includes debugging production systems, evaluating new technologies, and working with cross-functional teams in a hybrid setup. 🗂️ Requirements: 3+ years of experience in fullstack web application development, University degree in Computer Science, Data Science, Mathematics, or related technical field, Knowledge of TypeScript, Experience with Node.js, Experience with NestJS, Ability to build frontend applications using Vue or Nuxt, Understanding of event-driven systems, Familiarity with Kafka, Experience with AWS cloud services, Knowledge of CI/CD pipelines, Experience with Terraform or AWS CDK, Exposure to production systems and debugging, English proficiency, Polish proficiency, Readiness to work in a hybrid model in Katowice 📃 Skills: TypeScript, Node.js, NestJS, Vue, Nuxt, Kafka, AWS, GitLab, Terraform, CDK, CI/CD 🏢 Description: Responsibilities We are looking for a practical and collaborative Fullstack Engineer to join the Developer Experience (DX) team in a large enterprise environment. The role focuses on building internal developer platforms, tools, and services that improve developer productivity, system visibility, and workflow automation. You will contribute to developing and maintaining solutions that support engineering teams and improve development processes. Develop backend services and APIs using TypeScript , Node.js , and NestJS . Build frontend applications using Vue and Nuxt . Contribute to internal tools that improve developer productivity and automation. Work with DevOps engineers on cloud , CI/CD , and observability integration. Support debugging and root cause analysis of application issues. Participate in POCs and evaluation of new technologies. Collaborate with technical and non-technical stakeholders. Benefits Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. Language Courses – you'll have access to a multi-language learning platform enabling you to practice you language skills and learn new ones! Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Qualifications 3+ years of experience in fullstack development delivering web-based applications. Completed university degree in Computer Science , Data Science, Mathematics, or a related technical field. Good knowledge of TypeScript , Node.js , and frameworks such as NestJS . Ability to build frontend features using Vue or Nuxt . Understanding of event-driven systems and messaging tools like Kafka . Familiarity with AWS cloud services and how modern applications are deployed. Awareness of CI/CD pipelines (GitLab CI) and Infrastructure as Code (Terraform / AWS CDK) . Exposure to production systems, debugging, and working in distributed environments. Strong communication skills in English and Polish , with readiness to work in a hybrid model in Katowice . About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "

🏢 Summary: Full-Stack Engineer role in a Developer Experience team focused on building internal platforms, tools, and services that enhance developer productivity and workflow automation. The position involves developing TypeScript-based backend services and modern frontend applications while integrating with cloud infrastructure, CI/CD, and observability systems. The role requires close collaboration with DevOps in a hybrid work model. 🗂️ Requirements: 3+ years commercial experience in full-stack development, University degree in Computer Science, Data Science, Mathematics or related field, Strong experience with TypeScript, Experience with Node.js and NestJS, Experience with Vue or Nuxt, Knowledge of event-driven architectures, Experience with Kafka, Understanding of CI/CD pipelines, Experience with GitLab CI, Experience with AWS (ECS, EKS, EC2, IAM, Lambda), Experience with Infrastructure as Code tools, English proficiency, Polish proficiency, Availability for hybrid work (1–2 office visits per week) 📃 Skills: TypeScript, Node.js, NestJS, Vue, Nuxt, Kafka, CI/CD, GitLab, AWS, ECS, EKS, EC2, IAM, Lambda, Terraform, CDK 🏢 Description: We are looking for a practical and collaborative Full-Stack Engineer to join the Developer Experience (DX) team in a large enterprise environment. The role focuses on building internal developer platforms , tools, and services that improve developer productivity, system visibility, and workflow automation. The ideal candidate has strong TypeScript - based backend development experience, enjoys working with modern frontend technologies, and collaborates closely with DevOps engineers working on cloud infrastructure , CI/CD pipelines, and observability platforms. Design, develop, and maintain backend services and APIs using TypeScript , Node.js , and modern backend frameworks such as NestJS . Build and maintain modern frontend applications using frameworks such as Vue and Nuxt . Develop internal tools and platforms that improve developer productivity and automate development workflows. Collaborate closely with DevOps engineers to ensure applications integrate smoothly with cloud infrastructure , CI/CD pipelines, and observability platforms . Troubleshoot application and platform issues , perform root cause analysis, and support continuous improvement. Research and evaluate new technologies, creating Proofs of Concept (POCs) to assess potential solutions and best practices. Communicate technical concepts clearly and collaborate with both technical and non-technical stakeholders. Qualifications 3+ years of commercial experience in full-stack software development. Completed university degree in Computer Science , Data Science, Mathematics, or a related technical field. Strong experience with TypeScript and backend development using Node.js frameworks such as NestJS . Experience building modern frontend applications using frameworks such as Vue or Nuxt . Familiarity with event - driven architectures and messaging systems, such as Kafka . Understanding of CI/CD pipelines , ideally with GitLab CI. Experience working with cloud environments , preferably AWS (ECS, EKS, EC2, IAM, Lambda). Familiarity with Infrastructure as Code tools, such as Terraform or AWS CDK . Fluent communication skills in English and Polish and availability to work in a hybrid mode with 1–2 office visits per week . About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "

🏢 Summary: Full-Stack Engineer role focused on building internal developer platforms, tools, and services to improve productivity, automation, and system visibility in a large enterprise environment. The position involves developing TypeScript-based backend services and modern frontend applications while integrating with cloud infrastructure, CI/CD pipelines, and observability platforms. The role requires close collaboration with DevOps and contribution to continuous improvement through troubleshooting and technology evaluation. 🗂️ Requirements: 3+ years commercial experience in full-stack development, University degree in Computer Science, Data Science, Mathematics or related field, Strong TypeScript backend development experience, Experience with Node.js frameworks such as NestJS, Experience building frontend applications with Vue or Nuxt, Experience with event-driven architectures and messaging systems, Understanding of CI/CD pipelines, Experience with AWS cloud services (ECS, EKS, EC2, IAM, Lambda), Experience with Infrastructure as Code tools, Fluent English and Polish, Availability for hybrid work (1–2 office visits per week) 📃 Skills: TypeScript, Node.js, NestJS, Vue, Nuxt, Kafka, GitLab, AWS, ECS, EKS, EC2, IAM, Lambda, Terraform, CDK, CI/CD 🏢 Description: We are looking for a practical and collaborative Full-Stack Engineer to join the Developer Experience (DX) team in a large enterprise environment. The role focuses on building internal developer platforms , tools, and services that improve developer productivity, system visibility, and workflow automation. The ideal candidate has strong TypeScript - based backend development experience, enjoys working with modern frontend technologies, and collaborates closely with DevOps engineers working on cloud infrastructure , CI/CD pipelines, and observability platforms. Design, develop, and maintain backend services and APIs using TypeScript , Node.js , and modern backend frameworks such as NestJS . Build and maintain modern frontend applications using frameworks such as Vue and Nuxt . Develop internal tools and platforms that improve developer productivity and automate development workflows. Collaborate closely with DevOps engineers to ensure applications integrate smoothly with cloud infrastructure , CI/CD pipelines, and observability platforms . Troubleshoot application and platform issues , perform root cause analysis, and support continuous improvement. Research and evaluate new technologies, creating Proofs of Concept (POCs) to assess potential solutions and best practices. Communicate technical concepts clearly and collaborate with both technical and non-technical stakeholders. Benefits Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. Language Courses – you'll have access to a multi-language learning platform enabling you to practice you language skills and learn new ones! Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Qualifications 3+ years of commercial experience in full-stack software development. Completed university degree in Computer Science , Data Science, Mathematics, or a related technical field. Strong experience with TypeScript and backend development using Node.js frameworks such as NestJS . Experience building modern frontend applications using frameworks such as Vue or Nuxt . Familiarity with event - driven architectures and messaging systems, such as Kafka . Understanding of CI/CD pipelines , ideally with GitLab CI. Experience working with cloud environments , preferably AWS (ECS, EKS, EC2, IAM, Lambda). Familiarity with Infrastructure as Code tools, such as Terraform or AWS CDK . Fluent communication skills in English and Polish and availability to work in a hybrid mode with 1–2 office visits per week . About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "

🏢 Summary: Senior Fullstack Software Engineer role focused on building scalable, cloud-native applications with a strong backend emphasis (70% backend, 30% frontend). The position involves designing distributed, event-driven systems on AWS, developing REST APIs, and contributing across the full stack using Node.js, TypeScript, React, and Next.js. The engineer will drive architectural decisions, scalability, and technical direction while collaborating with cross-functional teams in a US-aligned remote environment. 🗂️ Requirements: Strong experience as Senior Software Engineer in product-focused environments, Advanced backend development with Node.js and TypeScript, Experience building and consuming REST APIs, Frontend development experience with React and TypeScript, Experience with AWS or other cloud platforms, Strong knowledge of distributed and scalable system design, Experience with MySQL and PostgreSQL databases, Experience with event-driven architectures, Experience with queuing or messaging systems, Ability to write clean, maintainable, scalable code, Strong debugging and problem-solving skills, Availability to work overlapping US hours 📃 Skills: Node.js, TypeScript, React, Next.js, AWS, REST, MySQL, PostgreSQL, SQL, APIs, Microservices, Event-driven, Messaging, Queues, Cloud, Distributed-systems 🏢 Description: Fullstack Senior Software Engineer Location: Remote We are looking for a talented Senior Fullstack Software Engineer to join a high-performing product engineering team focused on building scalable, modern cloud-native applications. This role is best suited to an experienced engineer who is stronger on the backend (approximately 70% backend / 30% frontend) and enjoys designing robust distributed systems while still being comfortable contributing across the full stack. You will play a key role in shaping technical direction, building scalable event-driven platforms, and contributing to product thinking - not just delivering code. We are looking for someone with strong ownership, accountability, and the ability to think about the wider business and customer impact of the solutions they build. This position requires alignment with US-based teams, and so the working hours must overlap. What You'll Be Doing Designing, building, and maintaining scalable backend services using Node.js and TypeScript Developing and supporting modern frontend applications using React and Next.js Building robust RESTful APIs and backend integrations Contributing to distributed, cloud-native systems running on AWS Designing and implementing event-driven architectures and queue-based systems Working with SQL databases including MySQL and PostgreSQL Driving engineering best practices, scalability, reliability, and performance improvements Collaborating closely with Product, Engineering, and stakeholders to shape technical solutions Taking ownership of features and systems throughout the full software lifecycle Mentoring engineers and contributing to technical discussions and architectural decisions Required Skills & Experience Strong experience as a Software Engineer / Senior Software Engineer in modern product-focused environments Excellent backend development experience with: Node.js TypeScript REST APIs React TypeScript Experience building applications in AWS cloud environments (or other cloud platforms) Strong understanding of scalable and distributed system design MySQL PostgreSQL Proven experience building event-driven architectures and working with queuing/messaging systems (highly important) Ability to write clean, maintainable, and scalable code Strong problem-solving and debugging skills What We're Looking For Strong product mindset - someone who thinks beyond just delivering tickets and understands the "why" behind engineering decisions Ownership and accountability for technical delivery and outcomes Ability to contribute to architectural direction and scalability initiatives Comfortable working in fast-paced, collaborative engineering environments Passion for building high-quality, scalable software products Strong communication and stakeholder collaboration skills

🏢 Summary: Senior Full-Stack Developer role focused on building a scalable web platform that enables customers to visualize furniture and decor in their homes using 3D and computer vision technologies. The position involves developing both frontend and backend components of an advanced visualization product. The role includes architectural contributions and optimization of performance and scalability. 🗂️ Requirements: 5+ years software development experience, Strong proficiency in Python, Strong proficiency in Django, Strong proficiency in PostgreSQL, Strong proficiency in AWS, Strong proficiency in TypeScript, Strong proficiency in Next.js, Strong proficiency in React, Strong proficiency in Redux, Strong proficiency in Three.js, Experience building scalable systems, Deep understanding of algorithms, Deep understanding of data structures, Understanding of networking, Understanding of databases, Degree in ComputerScience or equivalent experience 📃 Skills: TypeScript, Next.js, React, Redux, Three.js, Python, Django, PostgreSQL, AWS, Algorithms, DataStructures, Networking, Databases, ComputerVision, 3D 🏢 Description: We’re looking for a Senior Full-Stack Developer to join our team and help build an innovative digital product for the interior decor industry. You will work on an advanced platform that allows customers to preview and visualize furniture and decor items in their homes before making a purchase. The product combines modern web technologies and computer vision to deliver immersive 3D experiences for the home decor industry. Customer Our Customer is a technology company specializing in advanced visualization solutions for the home improvement and interior decor industries. Project By joining this project, you’ll work with a team of engineers to develop a platform that helps users visualize how furniture and decor items will look in their homes before buying them. The solution leverages computer vision and 3D technologies to create interactive and visually rich experiences, enabling customers to easily explore design options and make confident purchasing decisions. Technologies: TypeScript, Next.js, React/Redux, Three.js, Python, Django, PostgreSQL, AWS Requirements 5+ years of software development experience building scalable systems Strong proficiency in both backend (Python, Django, PostgreSQL, AWS) and frontend (TypeScript, Next.js, React/Redux, Three.js) technologies Deep understanding of algorithms, data structures, networking, and databases Degree in Computer Science or equivalent proven experience Strong communication skills and leadership mindset Proactive approach and ability to drive initiatives Mentorship skills for guiding engineers Exceptional attention to detail and focus on quality and long-term goals Responsibilities Design and develop scalable applications across frontend and backend layers Build intuitive user interfaces using TypeScript, Next.js, React/Redux, and Three.js Develop backend services and APIs using Python, Django, PostgreSQL, and AWS Apply computer science fundamentals to optimize algorithms, data structures, networking, and database design Ensure application performance, scalability, and reliability Collaborate closely with engineering, product, and design teams Take ownership of technical solutions and contribute to architectural decisions Mentor and guide other engineers, fostering knowledge sharing and high-quality code standards

🏢 Summary: Senior Fullstack Engineer role focused on building modern, scalable web applications using React and Node.js, with strong emphasis on frontend development. The position covers the full application stack, including backend services, API design, and data management. You will collaborate with cross-functional teams to deliver high-quality, accessible, and high-performance digital products. 🗂️ Requirements: Strong commercial experience with React, Strong commercial experience with Node.js, Experience with React Router, Experience with TanStack Query, Experience integrating Headless CMS (preferably Contentful), Understanding of API design principles, Experience with PostgreSQL, Experience with Redis, Experience with Vitest, Experience with Playwright, Knowledge of WCAG accessibility standards, Experience with performance optimisation, Ability to work across full software development lifecycle 📃 Skills: React, Node.js, TypeScript, Fastify, PostgreSQL, Redis, React Router, TanStack Query, Contentful, Vitest, Playwright, WCAG, SAP Gigya, Salesforce 🏢 Description: Senior Fullstack Engineer (React & Node.js) About the Role We are looking for a Senior Fullstack Engineer to join a product team building modern, scalable web applications and digital experiences. You will work across the entire application stack, from user-facing interfaces to backend services and integrations. The role has a strong focus on frontend engineering while also involving backend development, API design, and data management. You will collaborate closely with product, design, and engineering teams to deliver high-quality, accessible, and performant applications. Responsibilities Develop and maintain modern web applications using React, Node.js, and TypeScript. Build scalable and reusable UI components integrated with a design system. Develop and maintain backend services and APIs using Node.js and Fastify. Integrate applications with CMS platforms and third-party services. Work with PostgreSQL and Redis to support application functionality and performance. Write and maintain automated tests, including unit and end-to-end tests. Ensure high standards of accessibility, performance, and code quality. Participate in architectural discussions and contribute to engineering best practices. Requirements Strong commercial experience in fullstack development using React and Node.js. Solid experience with modern frontend technologies, including React Router and TanStack Query. Experience integrating with Headless CMS platforms, preferably Contentful. Good understanding of API design and backend development principles. Experience with PostgreSQL and Redis. Experience with automated testing frameworks such as Vitest and Playwright. Strong understanding of accessibility standards (WCAG) and performance optimisation. Ability to work across the entire software development lifecycle in a product-oriented environment. Nice to Have Experience with authentication and identity platforms such as SAP Gigya. Experience integrating Salesforce products or loyalty platforms. Experience in highly scalable, customer-facing digital products. Experience working in agile, cross-functional product teams.

🏢 Summary: Senior Full-stack Engineer role focused on building and scaling a modern B2B SaaS platform for subscription-based e-commerce. The position involves end-to-end feature delivery, architectural decisions, and improving system scalability and reliability. High-impact role with strong ownership over technical direction and product evolution. 🗂️ Requirements: 7+ years engineering experience in complex systems, Strong system design skills, Experience designing scalable architectures, Full-stack development experience, Experience building SaaS platforms, Experience with e-commerce systems 📃 Skills: JavaScript, TypeScript, SaaS, Architecture, Scalability, Reliability, APIs, Ecommerce, Payments, Cloud 🏢 Description: Senior Full-stack Engineer Our client is building a modern B2B SaaS platform that enables businesses to launch and scale subscription-based models for physical and digital products. The product sits at the intersection of e-commerce, payments, and developer tooling, with a strong focus on extensibility and developer experience. The team is lean, senior, and highly experienced, backed by strong investors and industry advisors. They operate with high autonomy, fast execution, and strong ownership culture. Role We are looking for a Senior Full-stack Engineer to help shape the next evolution of the platform. You will work across architecture, product, and infrastructure, focusing on scalability, reliability, and developer experience. This is a high-impact role where you will influence both technical direction and product decisions. Responsibilities Build and evolve a scalable SaaS platform Design and deliver new features end-to-end Improve performance, reliability, and system architecture Collaborate with product, design, and growth teams Requirements 7+ years of engineering experience in complex systems Strong architectural and system design skills Ability to choose appropriate technologies per problem Experience working in cross-functional teams Strong communication in Polish and English Startup mindset: ownership, speed, adaptability Experience with e-commerce platforms is a plus Offer High-impact role in a senior engineering team with real product ownership and influence. Competitive salary plus ESOP, fully remote work (Poland), regular team offsites, and modern tooling including MacBook Pro and AI credits. Direct access to founders, investors, and advisors.

🏢 Summary: Senior Fullstack Developer role focused on designing and building secure, scalable microservices and modern SPA applications in an international environment. The position is hands-on, backend-oriented with active frontend development, emphasizing high code quality, event-driven architecture, and strong security standards. The role includes architecture contribution, CI/CD implementation, and maintaining large-scale systems. 🗂️ Requirements: Strong fullstack development experience (backend and frontend), Senior-level hands-on coding experience, Expertise in Java 17–21, Experience with Spring Boot 3.x microservices, Experience with Kafka and event-driven architecture, Strong SQL knowledge (Oracle), Experience with Redis, Experience with Angular SPA development, Strong TypeScript knowledge, Knowledge of Node.js, Understanding of DDD, Knowledge of web security principles, Experience with OIDC and OAuth2, Experience with CI/CD pipelines, Experience with large-scale applications, Fluent English, Availability to work from Warsaw office 2x/week 📃 Skills: Java, SpringBoot, Kafka, SQL, Oracle, Redis, DDD, Node.js, TypeScript, Angular, Webpack, OIDC, OAuth2, OWASP, Git, GitLab, Jenkins, Maven, Docker, Kubernetes, IntelliJ, VSCode, Jira, Confluence, Python, CICD 🏢 Description: Mission & Responsibilities As a Senior Fullstack Developer, you will design, build, and maintain modern, secure, and scalable applications that support critical business processes. You will work hands-on across both backend and frontend, contributing directly to software development rather than people management. Your mission is to ensure service continuity, high code quality, and alignment with business and security standards, while actively collaborating with international stakeholders in an English-speaking environment. Key Responsibilities Design, develop, and maintain fullstack applications (backend-focused with modern frontend) Build secure, scalable, maintainable, and testable software Develop Java-based microservices using Spring Boot Contribute to Single Page Applications (SPA) development Collaborate with business and technical stakeholders on requirements Participate in architecture design and technical decisions Integrate systems using event-driven architectures (Kafka) Optimize and maintain existing codebases Implement automated testing and CI/CD pipelines Ensure application security (authentication, identity management) Maintain technical documentation Share best practices within developer communities Continuously improve skills and stay up to date with modern technologies Requirements Backend & Architecture Java 17–21 (modern Java, no legacy) Spring Boot 3.x (microservices) Kafka (event-driven systems) SQL (Oracle) Redis (experience or strong understanding) Domain Driven Design (DDD) Frontend Node.js TypeScript Angular (SPA development) Strong knowledge of Angular best practices Webpack (nice to have) Security Strong web security knowledge OIDC & OAuth2 Identity management platforms (nice to have) OWASP awareness (certifications are a plus) DevOps & Tools Git CI/CD: GitLab CI (Jenkins nice to have) Maven (nice to have) Docker & Kubernetes (nice to have) IntelliJ, VS Code Jira & Confluence Additional Python (nice to have) AI-based coding tools (nice to have) Ways of Working Agile (Scrum, Kanban) DevOps mindset Distributed, international collaboration Soft Skills Strong teamwork and collaboration Analytical and problem-solving mindset Independent work on complex topics Adaptability and results-driven attitude Continuous learning mindset Candidate Profile (Must-have) Strong fullstack experience (backend-only profiles will not be considered) Senior-level hands-on developer (not a manager or lead) Experience with large-scale applications Excellent English communication skills Willingness to work from the office in Warsaw 2x/week If you're a hands-on engineer who enjoys building high-quality systems and working in an international environment — we’d love to hear from you.