We are a U.S.-based fintech startup operating in the investment and financial services space. Our distributed teams work across Poland, the United States, and Ireland, collaborating on technology-driven solutions related to stocks and investments.Security, compliance, and the responsible handling of sensitive financial data are central to how we operate, as we build scalable products in a regulated environment.4-6 years of experience is okResponsibilities — Modernize legacy systems( C#) via redesign and refactoring.— Build APIs with proper security and lifecycle governance.— Collaborate with UX, product, and architecture teams.— Optimize backend performance.— Support public API documentation and governance. Skills— Strong ( C#) Jbackend capability.— Experience with modernization and migration projects.— Understanding of microservice and API design.— Familiarity with CI/CD, linting, testing frameworks.— Knowledge of security and performance patterns.— Good collaboration across UX and backend teams. In addition to this, if you have commercial experience with Java backend or React frontend — it will be a strong plus. Recruitment steps: HR interview (30-45 min)Tehnical interview with live coding (40-45 min)Final client interview (30-45 min)Backround checkJob Offer The assignment is for between 26 to 32 months. You will work in a team of 9 engineers. The assignment is to migrate from monolith to microservices. Important: the candidate must have worked/lived in Poland for the last 2+ yearsPlease read before applying:The client is building a product in the bank/investment/brokerage systems niche, and their investors have strict security and compliance requirements, where every person will go through a background check.What does this mean?Before making an offer, they will check whether you have violated any EU laws.For background check — you must be a taxpayer in Poland for 2+ years.Відгукнутись на вакансію