Calypso Developer

VISTULO is hiring a Calypso developer to build and extend the vendor platform for fixed income, foreign exchange, and derivatives trading at a top North American bank. The role involves working on one of the largest Calypso deployments globally, directly extending the platform with Java development.

Must have:

• 5+ years hands-on Calypso development experience; version 17+ preferred.
• Experience with APIs, workflows, engines, events, reporting, and scheduled tasks.
• 5+ years Java development experience.
• Experience with collateral management module.
• Strong SQL and database experience, preferably with Oracle.
• Strong DevOps experience with source control, build and deployment automation, and release management using GitHub, Azure DevOps, Ansible, and JFrog Artifactory.
• Solid understanding of fixed income, FX, interest rate derivatives, and credit derivatives.
• Experience supporting high-volume trading environments in investment banking/capital markets.
• Ability to work independently and collaboratively in structured project environments.
• Ability to handle ambiguity and utilize AI tools proactively.
• Strong communication skills for trader-facing environments.
• Ability to maintain 3–4 hour daily overlap with US Eastern business hours with flexibility during onboarding and crunch periods.

Nice to have:

• Experience using AI tools to speed up development or testing.
• Experience working remotely with North American firms.
• Computer science degree from a top technical university.

• Build and maintain Calypso APIs, workflows, engines, events, reporting, and scheduled tasks using Java.
• Integrate Calypso with external systems using MQ, Kafka, and Webservice/HTTP.
• Write and optimize SQL, troubleshoot database issues, and work with Oracle-backed Calypso environments.
• Support Calypso applications in Linux/Unix environments using shell scripting.
• Maintain and improve build, deployment, and release processes using GitHub, Azure DevOps, Ansible, and JFrog Artifactory.
• Work from requirements and tickets defined by business analysts and actively shape solutions.
• Fix defects, participate in code review, and maintain code quality across the Calypso codebase.
• Support testing and validation of changes before production release.
• Use AI tools to accelerate development and testing where appropriate.

Only open to residents of Poland or Romania with legal permission to work. Requires 3–4 hour daily overlap with US Eastern business hours, with more flexibility during onboarding. Successful candidates must pass a standard background check.