Xebia Poland

• designing, developing, and maintaining scalable backend services and APIs using Node.js and TypeScript • ensuring high performance and reliability • architecting and implementing RESTful and/or GraphQL APIs as well as microservices-based solutions • collaborating closely with cross-functional teams to define technical solutions • improving system architecture, and promoting engineering best practices • optimizing database schemas and queries, ensuring data integrity, security, and performance across databases • supporting DevOps and cloud initiatives by working with CI/CD pipelines, containerization, monitoring, and cloud infrastructure

• building Snap packages • using LXD • handling dependencies in a large monorepo-based ecosystem • working with Go modules: understanding project structures, go.mod, and dependency types (required, indirect, extended) • performing advanced semantic versioning (semver), including: version bumping, working with tags, updating modules, synchronizing versions across multiple repositories, migrating and updating dependencies across different repositories according to the release process.

• Building Snap packages • Using LXD • Handling dependencies in a large monorepo-based ecosystem • Working with Go modules: understanding project structures, go.mod, and dependency types (required, indirect, extended) • Performing advanced semantic versioning (semver), including: version bumping, working with tags, updating modules, synchronizing versions across multiple repositories, migrating and updating dependencies across different repositories according to the release process

• Designing, developing, and maintaining scalable backend services and APIs using Node.js and TypeScript • Ensuring high performance and reliability • Architecting and implementing RESTful and/or GraphQL APIs as well as microservices-based solutions to support complex business requirements • Collaborating closely with cross-functional teams to define technical solutions • Improving system architecture and promoting engineering best practices • Optimizing database schemas and queries, ensuring data integrity, security, and performance across relational and non-relational databases • Supporting DevOps and cloud initiatives by working with CI/CD pipelines, containerization, monitoring, and cloud infrastructure

• designing, implementing, and maintaining automated test solutions for web and backend systems • developing and evolving test automation frameworks using modern tools and technologies • planning, structuring, and designing test scenarios and test cases based on business and technical requirements • automating backend/API tests • actively participate in the full Software Development Life Cycle (SDLC), including requirements analysis, refinements, reviews, and retrospectives.

• designing, implementing, and maintaining automated test solutions for web and backend systems • developing and evolving test automation frameworks using modern tools and technologies • planning, structuring, and designing test scenarios and test cases based on business and technical requirements • automating backend/API tests • actively participate in the full Software Development Life Cycle (SDLC)

• Designing and developing automation frameworks (Java / Playwright) • Creating and maintaining backend/API automated tests (e.g. RestAssured or similar) • Preparing and structuring test scenarios and test cases • Executing API tests using Postman • Integrating tests with CI/CD pipelines (preferably Jenkins) • Performing performance testing activities • Reviewing automation solutions and ensuring best practices • Mentoring junior testers and supporting knowledge sharing within the team

• designing and developing automation frameworks (Java / Playwright) • creating and maintaining backend/API automated tests (e.g. RestAssured or similar) • preparing and structuring test scenarios and test cases • executing API tests using Postman • integrating tests with CI/CD pipelines (preferably Jenkins) • performing performance testing activities • reviewing automation solutions and ensuring best practices • mentoring junior testers and supporting knowledge sharing within the team.

• define and implement a modern performance testing strategy • lead the team in delivering it across critical customer journeys • designing, implementing, and owning an end-to-end performance test strategy and roadmap • building and maintaining journey-based performance tests for key user flows and business-critical scenarios • defining performance benchmarks (SLAs/SLOs), run performance baselines, and provide actionable analysis and reporting • setting up and evolve monitoring/observability practices to support performance testing and diagnosis • integrating performance testing into CI/CD pipelines and continuous delivery processes • leading, guiding, and mentoring the team on modern performance engineering practices and tooling • collaborating with engineering, product, and other stakeholders to align on performance goals and drive adoption of the new approach • supporting the transition from the current team/approach by influencing change and ensuring continuity of delivery

• Design, develop, and maintain cross-platform mobile apps using Flutter • Write clean, reusable, and maintainable code • Optimize app performance across devices and screen sizes • Collaborate with product managers, designers, and backend engineers • Integrate REST APIs and third-party services • Apply design patterns and best practices (SOLID, architecture)