Senior Java Developer

🏢 Summary: Development role focused on building and maintaining AI-enabled Java applications and scalable microservices in cloud environments. The position involves integrating AI tools into enterprise systems and delivering cloud-native solutions on GCP. It requires collaboration with engineering teams to implement robust backend and API integrations. 🗂️ Requirements: Strong hands-on Java development experience, Experience building microservices architectures, Experience with distributed systems, Practical experience with AI projects or AI integrations, Experience with Google Cloud Platform, Knowledge of REST APIs, Experience with backend integrations, Familiarity with containerization technologies, Familiarity with CI/CD pipelines, Experience working in Agile environments 📃 Skills: Java, Microservices, DistributedSystems, AI, GCP, REST, APIs, Docker, Kubernetes, CICD, Cloud, Agile 🏢 Description: SNI is serving as a trusted IT Outsourcing partner in line with the needs of World's most prestigious firms and carried out successful projects worldwide. Scope: • Design, develop, and maintain AI-enabled applications and backend services using Java • Build and support scalable microservices-based architectures in cloud environments • Integrate AI tools, services, and models into enterprise applications and business workflows • Collaborate with engineering and product teams to deliver AI-driven solutions • Develop APIs and backend integrations for AI and cloud-based services • Participate in the design and implementation of cloud-native applications on GCP Skills: • Strong hands-on experience with Java development • Experience building microservices architectures and distributed systems • Practical experience working on AI-related projects or integrating AI tools/services • Interest and strong motivation to work with AI technologies and modern AI solutions • Experience with Google Cloud Platform (GCP) • Knowledge of REST APIs and backend integration patterns • Experience with containerization technologies such as Docker and Kubernetes is a plus • Familiarity with CI/CD pipelines and DevOps practices • Experience working in Agile environments Follow us on Linkedin! http://linkedin.com/company/snisourcing/

🏢 Summary: The offer is for an Automation Engineer role focused on designing, developing, and maintaining automation solutions and dynamic web applications. The position involves building end-to-end automation workflows, supporting containerized and server environments, and contributing to CI/CD and DevOps initiatives. The role also includes system integrations, operational support, and continuous improvement across multiple environments. 🗂️ Requirements: Strong experience in automation engineering, Experience in process orchestration, Hands-on experience with PHP, Hands-on experience with Symfony, Hands-on experience with MariaDB, Hands-on experience with Docker, Hands-on experience with Ansible, Experience with CI/CD pipelines, Experience with DevOps practices, Experience with system integrations, Experience with configuration automation, Experience with server and infrastructure management, Understanding of incident and operations management 📃 Skills: PHP, Symfony, MariaDB, Docker, Ansible, CI/CD, DevOps, Automation, Orchestration, Linux 🏢 Description: SNI is serving as a trusted IT Outsourcing partner in line with the needs of World's most prestigious firms and carried out successful projects worldwide. Scope: Design, develop, deploy, and maintain automation solutions and dynamic web applications Build and optimize end-to-end automation workflows and process orchestration solutions Develop reusable automation components and system integrations Support containerized and server-based environments through configuration automation Maintain and enhance web applications and backend services Participate in CI/CD implementation and DevOps initiatives Provide operational and incident support, including coordination with Level 2 teams Collaborate with business, operations, and technical stakeholders across multiple environments Ensure high-quality, stable, and compliant solution delivery Promote best practices and contribute to continuous improvement initiatives Skills: Strong experience in automation engineering and process orchestration Hands-on experience with: PHP, Symfony, MariaDB, Docker, Ansible Experience with CI/CD pipelines and DevOps practices Knowledge of system integrations, reusable components, and configuration automation Experience with server and infrastructure management Understanding of incident and operations management processes Strong communication, collaboration, and organizational skills Ability to work independently and manage multiple activities simultaneously Nice to Have French language proficiency Experience working in international and multi-vendor environments Follow us on Linkedin! http://linkedin.com/company/snisourcing/

🏢 Summary: IT architecture role focused on decomposing a legacy monolithic trading platform into a scalable microservices-based architecture. The position involves designing distributed systems, asynchronous communication, data strategies, and resilient integration patterns for trading lifecycle processes. The role requires strong Java and Spring expertise combined with experience in distributed systems, messaging, and enterprise integration. 🗂️ Requirements: Commercial experience with Java, Experience with Spring Framework, Experience with large monolithic legacy systems, Understanding of distributed systems architecture, Experience with REST APIs, Experience with SOAP web services, Experience with system integrations, Database experience with Oracle, Knowledge of service decomposition and domain-driven design, Experience with Kafka or message brokers, Knowledge of eventual consistency and failure recovery, Experience with logging, monitoring, and tracing, Understanding of scalability and idempotent processing, Ability to communicate architectural decisions 📃 Skills: Java, Spring, REST, SOAP, Oracle, Kafka, SQL, Microservices, DDD, Queues, Messaging, Monitoring, Tracing, Logging 🏢 Description: Scope: - Analyze the existing monolithic trading platform and define a service decomposition strategy. - Identify service boundaries based on core business capabilities (trade capture, validation, affirmation, lifecycle management, valuation, settlement, reporting). - Support the migration from a monolith to a service-oriented/microservices architecture. - Design service and external system communication using REST APIs, messaging, queues, and Kafka. - Define data ownership, database strategy, synchronization, and eventual consistency. - Design resilient failure handling, monitoring, observability, and audit mechanisms. - Address scalability challenges, including idempotency, concurrency, duplicate message handling, and horizontal scaling. - Collaborate with business analysts, developers, architects, QA, and production support teams. - Ensure the architecture delivers performance, reliability, regulatory compliance, and operational stability. Skills: - Strong commercial experience with Java and the Spring Framework. - Experience working with large, complex legacy systems, ideally monolithic applications. - Good understanding of distributed systems architecture. - Practical experience with REST APIs, SOAP web services, and system integrations. - Strong database experience, preferably with Oracle. - Understanding of service decomposition, bounded contexts, domain-driven design, or similar architectural approaches. - Experience designing systems with asynchronous communication using queues, Kafka, or other message brokers. - Knowledge of transaction handling, eventual consistency, retry mechanisms, dead-letter queues, and failure recovery. - Experience with observability concepts such as logging, monitoring, tracing, correlation IDs, and operational dashboards. - Understanding of scalability patterns, including idempotent processing and duplicate message prevention. - Ability to evaluate trade-offs between synchronous REST communication and asynchronous messaging. - Strong analytical and problem-solving skills. - Ability to communicate architectural decisions clearly to both technical and non-technical stakeholders.

🏢 Summary: The role involves designing, developing, testing, and maintaining native Android applications within Agile teams, ensuring high-quality, secure, and maintainable code. The position includes release management, performance optimization, and mentoring team members while following best development practices. It requires collaboration on CI/CD processes and continuous improvement of mobile applications. 🗂️ Requirements: Proven experience in native Android development, Strong knowledge of Kotlin and Android SDK, Experience with Jetpack Compose, Hands-on experience with unit testing and test automation, Experience with CI/CD pipelines for mobile applications, Experience with REST APIs integration, Knowledge of Google Play Store publishing and certificate management, Experience with Git, Understanding of mobile security best practices 📃 Skills: Kotlin, Android, AndroidSDK, JetpackCompose, AndroidStudio, ADB, Emulator, TDD, CICD, REST, JSON, XML, Git, IntelliJ, VSCode 🏢 Description: SNI is serving as a trusted IT Outsourcing partner in line with the needs of World's most prestigious firms and carried out successful projects worldwide. Scope: Design, develop, test, and maintain native Android applications Collaborate within Agile teams and contribute to best practices and technical standards Ensure delivery of high-quality, maintainable, and well-tested code Mentor team members and support knowledge sharing Manage and coordinate application releases to production Apply secure coding practices and follow corporate development standards Contribute to performance, quality, and process improvements Troubleshoot, debug and optimize application performance Skills: Proven experience in native Android development Strong knowledge of Kotlin, Android SDK, and Jetpack Compose Experience with Android Studio, ADB, and Emulator tools Hands-on experience with unit testing and test automation (TDD is a plus) Experience with CI/CD pipelines for mobile applications Knowledge of Google Play Store publishing and certificate management Strong debugging and problem-solving skills Experience with REST APIs, JSON, and XML Understanding of mobile security and accessibility best practices Experience with Git and modern IDEs (IntelliJ, VS Code) Familiarity with Agile methodologies and collaborative environments Follow us on Linkedin! http://linkedin.com/company/snisourcing/

🏢 Summary: Full-stack developer role focused on building and maintaining web applications using TypeScript, Node.js, and React, with strong emphasis on serverless solutions in AWS. The position involves developing cloud-based applications, managing infrastructure with AWS CDK, and implementing CI/CD pipelines. The role requires collaboration in an agile team to deliver high-quality, tested software solutions. 🗂️ Requirements: 3+ years full-stack development experience, Proficiency in TypeScript, Proficiency in Node.js, Proficiency in React, Experience with AWS Lambda, Experience with AWS CDK, Experience with relational databases, Experience with CI/CD pipelines, Knowledge of modern web architecture 📃 Skills: TypeScript, Node.js, React, AWS, Lambda, CDK, PostgreSQL, CI/CD, CodePipeline, Jest, SQL 🏢 Description: SNI is serving as a trusted IT Outsourcing partner in line with the needs of World's most prestigious firms and carried out successful projects worldwide. Responsibilities: Design, develop, and maintain full-stack web applications using TypeScript, Node.js, and React. Build and deploy serverless applications using AWS Lambda and manage infrastructure with AWS CDK. Work with relational databases such as PostgreSQL and optimize database interactions. Implement CI/CD pipelines using AWS CodePipeline or similar tools. Write automated tests using Jest or similar frameworks to ensure high-quality code. Collaborate closely with cross-functional teams in an agile environment. Skills: 3+ years of professional full-stack development experience. Strong proficiency in TypeScript, Node.js, React. Experience with serverless applications on AWS (Lambda). Experience with AWS CDK for infrastructure management. Solid understanding of relational databases (PostgreSQL or similar). Experience with CI/CD pipelines. Knowledge of modern web application architecture. Follow us on Linkedin! http://linkedin.com/company/snisourcing/

🏢 Summary: Senior Frontend Engineer role focused on designing and developing scalable, high-performance applications using React and TypeScript. The position involves leading frontend architecture decisions, building reusable components, integrating RESTful APIs, and ensuring code quality through testing and CI/CD. The role operates within an Agile environment with close collaboration across teams. 🗂️ Requirements: 8+ years software engineering experience, Strong commercial experience with React.js, Expertise in JavaScript, Expertise in TypeScript, Experience with Redux, Experience with Redux-Saga, Experience with modern React hooks, Experience with state management, Experience integrating RESTful APIs, Understanding of component-driven architecture, Experience with responsive UI development, Proficiency with Git, Experience with CI/CD practices, Experience working in Agile/Scrum 📃 Skills: React, TypeScript, JavaScript, Redux, Redux-Saga, Hooks, REST, Microservices, Git, CI/CD, Agile, Scrum 🏢 Description: SNI is serving as a trusted IT Outsourcing partner in line with the needs of World's most prestigious firms and carried out successful projects worldwide. Scope: Design and develop scalable and high-performance frontend applications using React and TypeScript Lead the development of modern, user-facing features with a strong focus on usability and performance Build reusable components and implement state management solutions (Redux, Redux Saga) Collaborate closely with backend engineers to integrate RESTful APIs and microservices Contribute to frontend architecture decisions, including component structure, routing, and performance optimization Ensure high code quality through code reviews, automated testing, and CI/CD practices Participate actively in Agile (Scrum) ceremonies and cross-functional collaboration Skills: 8+ years of software engineering experience, including strong commercial experience with React.js Strong expertise in JavaScript and TypeScript Proven experience with React ecosystem (Redux, Redux Saga, modern hooks, state management) Solid understanding of component-driven architecture and responsive UI development Experience integrating frontend applications with RESTful APIs Strong knowledge of Git and version control workflows Experience working in Agile/Scrum environments Nice to Have: Experience with cloud platforms (GCP, AWS, Azure) Familiarity with containerization (Docker, Kubernetes) DevOps knowledge (CI/CD, monitoring, automation) Follow us on Linkedin! http://linkedin.com/company/snisourcing/

🏢 Summary: The offer is for a technical role focused on building, automating, and maintaining cloud-based infrastructure and backend systems in Azure. It involves developing deployment pipelines, supporting test and development environments, and implementing scalable backend services and REST APIs. The position also includes managing live releases and ensuring reliability of cloud infrastructure and applications. 🗂️ Requirements: Experience with Python programming, Hands-on experience with Azure cloud services, Experience in building and managing REST APIs, Experience with web frameworks (FastAPI, Flask, or Django), Experience with CI/CD pipelines using Azure DevOps, Experience in infrastructure design and deployment, Experience in build and deployment automation, Experience in backend system development, Ability to manage and support test environments 📃 Skills: Python, Azure, REST, FastAPI, Flask, Django, CI/CD, AzureDevOps, APIs, Infrastructure, Automation 🏢 Description: SNI is serving as a trusted IT Outsourcing partner in line with the needs of World's most prestigious firms and carried out successful projects worldwide. Scope: Assist in building and maintaining test environments , including support and issue resolution. Provide technical design for infrastructure and deployment solutions. Develop and maintain build and code deployment automation pipelines . Support and enhance development tools and environments . Plan, coordinate, and execute live implementation releases . Develop and maintain backend systems ensuring scalability and reliability. Implement and manage Azure services and associated infrastructure . Build and manage REST APIs to expose business logic and services. Skills: Python programming Azure cloud services and infrastructure management REST API development and Web frameworks (e.g., FastAPI, Flask, Django) CI/CD pipelines using Azure DevOps Nice-to-Have: Knowledge of the banking domain Understanding of behavior/motivation-driven development or design Follow us on Linkedin! http://linkedin.com/company/snisourcing/

🏢 Summary: The offer is for a Senior Full Stack Developer to build and maintain scalable full-stack applications using TypeScript, React, Node.js, and NestJS within a distributed enterprise environment. The role involves designing REST APIs and BFF solutions, integrating enterprise systems, and supporting cloud-based, containerized deployments with CI/CD processes. The position also includes implementing authentication solutions and ensuring high performance and reliability in production systems. 🗂️ Requirements: 7+ years of experience as Full Stack Developer, Strong expertise in TypeScript, Strong expertise in React, Strong expertise in Node.js, Strong expertise in NestJS, Experience designing and developing REST APIs, Experience building BFF solutions, Understanding of distributed systems, Experience with enterprise integrations, Experience with authentication and authorization, Experience with SAML integrations, Experience with Redis, Experience with Docker and containerized environments, Hands-on experience with CI/CD pipelines, Experience with cloud deployments and ECS environments 📃 Skills: TypeScript, React, Node.js, NestJS, REST, BFF, Redux, Vite, Jest, SAML, Redis, Docker, CICD, GitHubActions, Cloud, ECS, DistributedSystems, Authentication, Authorization 🏢 Description: SNI is serving as a trusted IT Outsourcing partner in line with the needs of World's most prestigious firms and carried out successful projects worldwide. Scope: Develop and maintain full-stack applications using TypeScript, React, Node.js, and NestJS Build scalable frontend applications and backend services within a distributed architecture Design and implement REST APIs and Backend-for-Frontend (BFF) solutions Integrate applications with enterprise systems and external services Implement authentication and authorization solutions, including SAML integrations Support CI/CD processes, cloud deployments, and containerized environments Collaborate with cross-functional teams to deliver high-quality software solutions Participate in troubleshooting, performance optimization, and production support Skills: 7+ years of experience as a Full Stack Developer Strong expertise in TypeScript, React, Node.js, and NestJS Experience designing and developing REST APIs and BFF solutions Strong understanding of distributed systems and enterprise integrations Experience with Redux, Vite, Jest, and modern development practices Knowledge of authentication and authorization, including SAML Experience with Redis, Docker, and containerized environments Hands-on experience with CI/CD pipelines, preferably GitHub Actions Understanding of cloud-based deployments and ECS environments Strong troubleshooting, problem-solving, and communication skills Nice to Have Experience in the insurance or financial services sector Knowledge of RxJS and reactive programming Familiarity with enterprise integration patterns Follow us on Linkedin! http://linkedin.com/company/snisourcing/

🏢 Summary: Mid–Senior QA Engineer role focused on delivering manual and automated testing for web applications, backend/microservices, and APIs, with strong emphasis on test automation and quality strategy. The position involves frontend and API automation, end-to-end testing, and contributing to mobile and AI-based testing initiatives. The role requires independent work, troubleshooting across systems, and ensuring high product quality. 🗂️ Requirements: 5+ years experience in software testing or development, Strong experience in web application testing, Strong experience in backend/microservices testing, Hands-on API testing and automation experience, Experience with test automation tools, Experience with frontend test automation, Experience with end-to-end testing, Experience with mobile testing, Ability to work independently and define test strategy, Fluent English 📃 Skills: Cypress, TypeScript, REST-assured, Postman, Kotlin, Appium, API, Microservices, AI, Automation, Web 🏢 Description: SNI is serving as a trusted IT Outsourcing partner in line with the needs of World's most prestigious firms and carried out successful projects worldwide. Scope: Deliver manual and automated testing for web applications and backend/microservices Perform API testing and automation (e.g., REST-assured, Postman) Develop frontend test automation ( Cypress, TypeScript preferred ) Support end-to-end testing and troubleshooting across UI, backend, and integrations Contribute to mobile testing (manual/automated; Appium is a plus) Improve testing efficiency through automation and AI-based tools Work independently, drive test strategy, and ensure high product quality Skills: 5+ years in software testing or development (mid–senior level) Strong experience in web and backend/microservices testing Hands-on API testing and automation experience Experience with test automation tools (e.g., Cypress; TypeScript is a plus) Familiarity with REST-assured, Postman ; Kotlin is an advantage Experience with mobile testing (Appium is a plus) Strong analytical and troubleshooting skills Experience or interest in AI-based testing tools is a plus Fluent English and willingness to travel quarterly (Vienna/Bratislava/Prague) Follow us on Linkedin! http://linkedin.com/company/snisourcing/

🏢 Summary: Senior Java Developer role focused on building and maintaining Java-based microservices, APIs, and data integration solutions in a hybrid B2B setup. The position involves ETL processes, database operations, and collaboration in a DevOps-driven environment. Experience with Java, Spring Boot, Kafka, PostgreSQL, and cloud-native tools is required. 🗂️ Requirements: 8+ years of software development experience, Java, Spring Boot, Microservices architecture, API development, Kafka, PostgreSQL, SQL, DataStage, Kubernetes, Jenkins, Bitbucket, DevOps experience, Fluent English 📃 Skills: Java, Spring, Kafka, PostgreSQL, SQL, DataStage, Kubernetes, Jenkins, Bitbucket, Microservices, APIs, ETL, DevOps 🏢 Description: Senior Java Developer Location: Hybrid (2 days/week from Warsaw, Gdańsk, Gdynia, or Łódź) Contract: B2B via Experis Start Date: ASAP / up to 30 days notice period Responsibilities - Develop and maintain data integration solutions and data flow processes - Build and enhance Java-based microservices and APIs - Support ETL processes and database operations - Collaborate in a DevOps-driven environment Requirements - 8+ years of experience in software development - Strong experience with Java and Spring Boot - Experience with microservices architecture and APIs - Knowledge of Kafka - Experience with PostgreSQL and SQL - Knowledge of DataStage (ETL) - Familiarity with Kubernetes, Jenkins, and Bitbucket - DevOps mindset - Strong communication and teamwork skills - Fluent English Nice to Have - Experience in the banking or financial industry Benefits - Medicover healthcare - Multisport card - Group life insurance - Access to e-learning platform