Senior Fullstack Engineer

Join to apply for the Senior Fullstack Engineer (.NET/React) role at Relativity. 2 days ago Be among the first 25 applicants. Get AI-powered advice on this job and more exclusive features. Job Overview As a Senior Software Engineer, your primary mission will be to design, write, test, deploy, and support our Relativity software products. You will work in an established, senior team with business stakeholders to develop the product, features and services that drive and evolve our Relativity One SaaS. Posting Type Remote Import/Export Organization You will join Relativity’s Import Export organization, a high-impact engineering team at the heart of our Ingestion Department. We build and scale the infrastructure that powers secure, reliable, and high-throughput data movement across our SaaS platform. Your Role in Action Create architecture and non-functional design for Import/Export services that meet SLO/SLA targets Decompose complex problems into resilient, cloud-native designs Deliver milestones with measurable outcomes Advise and mentor team members on code quality, technical debt management, and best practices Own production systems by leading on-call procedures, RCAs, and proactive issue resolution that reduce MTTR Drive operational excellence using observability data to prioritize work, automate alerts, and expose trustworthy metrics Shape the roadmap with Product through clear trade-offs and data-backed decisions Optimize CI/CD by designing automation that keeps deployments predictable and compliant Build front-end architecture for Import/Export UX using React and TypeScript Build accessible, performant UIs with modern React (hooks, context) and reliable state management Partner with Design to evolve a reusable component library/design system and enforce UI standards Required Skills Advanced React with TypeScript Front-end testing integrated into CI/CD 5+ years with C#/.NET or similar services Experience designing and operating distributed SaaS systems Production ownership: on-call, RCAs, telemetry-driven MTTR reduction Cloud-native delivery (Azure preferred) Hands‑on CI/CD automation and deployment governance Bachelor’s in CS/Engineering or equivalent; fluent in English Nice to Have Microservice architecture for high-volume event-driven workloads Mentoring in frontend development and accessibility Building and maintaining design systems/component libraries Relativity is a diverse workplace with different skills and life experiences—and we love and celebrate those differences. We believe that employees are happiest when they're empowered to be their full, authentic selves, regardless how you identify. Benefit Highlights Comprehensive health, dental, and vision plans Parental leave for primary and secondary caregivers Flexible work arrangements Two, week-long company breaks per year Unlimited time off Long‑term incentive program Training investment program All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin, disability or protected veteran status, or any other legally protected basis, in accordance with applicable law. Relativity is committed to competitive, fair, and equitable compensation practices. This position is eligible for total compensation which includes a competitive base salary, an annual performance bonus, and long-term incentives. The expected salary range for this role is between 181 000 and 271 000 PLN . The final offered salary will be based on several factors, including but not limited to the candidate's depth of experience, skill set, qualifications, and internal pay equity. Hiring at the top end of the range would not be typical, to allow for future meaningful salary growth in this position. Suggested Skills Automation Data Analysis Database Management Network Architecture Performance Optimizations Problem Solving Project Management Software Development System Designs Technical Leadership Seniority level Mid‑Senior level Employment type Full-time Job function Engineering and Information Technology Industries Software Development Referrals increase your chances of interviewing at Relativity by 2x. Get notified about new Full Stack Engineer jobs in Warsaw, Mazowieckie, Poland. #J-18808-Ljbffr