Senior Software Engineer (.NET)

Looking for a role where engineering quality matters and your work goes straight into a mission‑critical trading flow? For one of our clients in the capital markets sector, we’re hiring a Senior Software Engineer to build and evolve a high‑volume trade management platform. You’ll work on distributed systems, multithreading and AWS serverless components, in close collaboration with global teams. If you like greenfield projects, it’s a perfect opportunity for you! Location: Warsaw (Śródmieście), hybrid mode (3 days a week in the office). Contract: employment contract. Your duties will include: Designing, building, and maintaining high-throughput trade flow processing services (multithreaded, distributed)End-to-end ownership: development, testing, deployment and production stability (incl. second-line support)Making technical decisions, assessing risk, and continuously improving reliability/performanceCollaborating with engineers across the globe to deliver robust releasesYour skills & experience: Min. 5 years of experience in software engineeringProficiency with . NET and C#Hands-on experience in serverless environments (preferably AWS or Azure)very good English (B2/C1)Tech stack:. NET CoreC#KafkaAWSBenefits:yearly bonusmedical insurancelife insuranceMultiSport Cardlunch card