Senior Java Trading Systems Engineer
Vistulo
Vistulo hires engineers in Poland and Romania to work on front-office trading systems for a top North American bank, including algorithmic order management, routing, FX and fixed income and large Calypso deployments. The role is long-term B2B contract remote work (Poland or Romania) on low-latency Java trading systems; other open roles include C#, Calypso, Java backend, React frontend and Calypso BA/PO.
What you’ll do
- Develop front-office trading systems (algorithmic OMS/order routing, FX, fixed income)
- Work alongside original engineering teams in North America and Europe
- Long-term remote development with required overlap with US Eastern hours
What they’re looking for
- Experience with microsecond-latency trading systems (OMS/order routing, equities/options/FX)
- 7+ years (listed for C# trading engineer; Java backend lists 6+ yrs)
- Experience with Calypso for relevant Calypso roles
Skills
- Java: microsecond-latency, Calypso, backend, event-driven
- C#: .NET, low-latency, FIX
- React: TypeScript, frontend, RFQ
- Calypso: Calypso v17+, FX, fixed income, IR & credit derivatives, back office
- FIX: protocol, trading
- TypeScript: React
The post
Vistulo | Senior Java, C#, React & Calypso engineers, Calypso BA/PO | REMOTE (Poland or Romania) | B2B contract, pay ranges below
Vistulo hires engineers in Poland to work on trading systems for capital-markets clients. All roles below are with a top North American bank: actively developed front-office systems (algorithmic order management and routing, FX, fixed income, and one of the largest Calypso deployments in the world). You work alongside the original engineering team in North America and Europe. This is core product work, not legacy support. Long-term and fully remote, with overlap with US Eastern hours (6h for the trading roles; some roles work full ET hours for the first ~2 months of onboarding).
- Senior Java Trading Systems Engineer (microsecond-latency OMS/order routing, equities/options/FX), 270–300 PLN/hr, remote from Poland or Romania: https://ats.vistulo.com/roles/253cbd69-1019-4547-93b6-6ef8dbc9e771/java-trading-systems-engineer-2026-06/hn/
- Senior C# Trading Systems Engineer (.NET, FIX, low-latency, 7+ yrs), 250–280 PLN/hr, remote from Poland or Romania: https://ats.vistulo.com/roles/a7986cb1-7531-4376-9f07-8dfa11e965c7/sr-c-trading-engineer-2026-07/hn/
- Calypso Developer (Java, FX, fixed income), remote from Poland or Romania, 240–270 PLN/hr: https://ats.vistulo.com/roles/0b4668c6-525e-4d41-8c6a-f6a8b2f09b34/calypso-dev-2026-08/hn/
- Java Backend Engineer (event-driven distributed systems, 6+ yrs), 220–240 PLN/hr, remote from Poland or Romania,: https://ats.vistulo.com/roles/64866447-8224-49ab-b655-5c2f894dc491/java-backend-engineer-2026-09/hn/
- Senior React Frontend Developer (React/TypeScript, fixed income trading flows, RFQ a plus), 220–250 PLN/hr, remote from Poland or Romania,: https://ats.vistulo.com/roles/1f5cb00f-791b-4491-a189-32a272309aaa/sr-react-with-fi-2026-06/hn/
- Business Analyst / Product Owner, Calypso (Calypso v17+, IR & credit derivatives, back office), 200–240 PLN/hr, remote from Poland or Romania: https://ats.vistulo.com/roles/54c7dcf3-d40a-4d1f-8073-ee99c65404c5/calypso-ba-2026-08/hn/
Apply via the links above. Questions: contact@vistulo.com.