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VISTULO sp. z o.o.

Calypso Developer

VISTULO sp. z o.o. Show all offers
220 - 250 PLN
B2B
Mid
Warszawa
Expires Oct 3, 2026
16 days ago

In short

Calypso Developer (PL) needed for API, workflow, engine development using Java, SQL, Oracle, MQ, Kafka. Requires 5+ years Java & Calypso dev, DevOps (GitHub, Azure DevOps, Ansible, Artifactory). Full-time B2B contract in Warsaw with US Eastern hours overlap.

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Technologies we use

About the project

This is how we organize our work

This is how we work

Your responsibilities

  • 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 to automate development and operational tasks.
  • 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, thinking critically and contributing your experience and domain knowledge, and actively help shape solutions that empower the bank’s business users.
  • Fix defects, participate in code review, and maintain code quality across the Calypso codebase.
  • Support testing and validation of changes before they reach production.
  • Use AI tools to speed up development or testing work where it makes sense.

Our requirements

  • 5+ years hands-on Calypso development experience; V17+ strongly preferred
  • Working with APIs, workflows, engines, events, reporting, and scheduled tasks, and integrating it with external systems.
  • 5+ years Java development experience.
  • Experience with the collateral management module.
  • Strong SQL and database experience, preferably Oracle.
  • Strong DevOps experience covering source control, build automation, deployment automation, and release management, with hands-on experience 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 with minimal supervision, collaborate in cross-functional teams, and operate successfully within structured project environments.
  • Ability to deal with ambiguity: read between the lines and fill in the blanks, ask clear questions, leverage AI tools to fill gaps, and generally know where to turn to proactively develop solutions.
  • Strong communication skills, comfortable working in high-stakes, trader-facing environments.
  • Ability to maintain a 3–4 hour overlap with US Eastern business hours, with flexibility during crunch periods.

Optional

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

What we offer

  • Work that matters: build on one of the largest Calypso deployments in the world
  • Professional growth: Collaborate with smart, highly capable developers and business administrators in a supportive and challenging environment.
  • Direct collaboration: You will work directly with the client team in North America and in Poland.
  • Long-term commitment: This is not a fixed-scope or fixed-term outsourcing role; we value people who want to grow and contribute long-term.
  • Flexibility & remote work: Fully remote position based in Poland or Romania, with increasing schedule flexibility post-onboarding.
  • Competitive Compensation: Top pay and ample time-off options.

Why Join Us?

Published 2026-09-03
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