> Markdown version of [/jobs/ext/2275782-calypso-integration-developer](https://www.wearedevelopers.com/jobs/ext/2275782-calypso-integration-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Calypso Integration Developer - **Company:** Rm Staffing B.v. - **Location:** Bilbao, Spain - **Salary:** €115,700.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Unix, Java Message Service (JMS), Spring Framework, PostgreSQL, Enterprise Messaging Systems, Microsoft SQL Server, Oracle Databases, Calypso Programming Language, Software Deployment, Data Streaming, User-Centered Design, SOAPAPI, Apache Kafka - **Published:** August 28, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role + Calypso expertise - 10+ years of experience with Calypso, including integration and back-office functions. + Financial products - Strong knowledge of OTC derivatives, fixed income, FX, and money markets. + Java development - Proficiency in Java, Unix, Spring. + API integration - Experience with REST/SOAP APIs. + Messaging technologies - MQ, Kafka, JMS. + Databases - Oracle, SQL Server, PostgreSQL. + Problem-solving - Strong analytical and communication skills. Language: + English (C1) (Mandatory). ## Description A highly experienced Senior Calypso Integration Developer is required to lead the integration stream of a major Calypso implementation for an international client. The role involves driving the end-to-end design, development, and delivery of robust integration solutions, ensuring alignment with business needs, technical standards, and enterprise architecture. This position is fully on-site in Paris and requires deep Calypso expertise, strong leadership capabilities, and extensive experience in complex financial environments. Tasks: + Integration leadership - Lead the integration stream for a new Calypso implementation, defining architecture, data flows, and interface specifications. + Calypso interface development - Develop, customize, and maintain Calypso interfaces and connectivity components. + Workflow oversight - Oversee messaging workflows, transfer generation processes, and back-office integrations. + Cross-team collaboration - Work closely with business analysts, functional teams, infrastructure, and vendors. + Compliance assurance - Ensure alignment with architecture, security, and performance standards. + Testing support - Support SIT, UAT, and production deployments. + Issue resolution - Troubleshoot complex integration and performance issues. + Mentoring - Mentor junior developers and contribute to documentation and best practices. ## Related Videos - [Database Magic behind 40 Million operations/s](https://www.wearedevelopers.com/videos/748-database-magic-behind-40-million-operations-s) - [Optimizing Discovery: PostgreSQL's Role in Transforming GetYourGuide's Search](https://www.wearedevelopers.com/videos/1647-optimizing-discovery-postgresql-s-role-in-transforming-getyourguide-s-search) - [WeAreDevelopers LIVE - Node and Package Security](https://www.wearedevelopers.com/videos/2138-wearedevelopers-live-node-and-package-security) - [The Time Paradox: Building Timezone-Safe Python/Django Applications](https://www.wearedevelopers.com/videos/1915-the-time-paradox-building-timezone-safe-python-django-applications) - [Why make use of an integration platform in today's software developments and infrastructure?](https://www.wearedevelopers.com/videos/758-why-make-use-of-an-integration-platform-in-today-s-software-developments-and-infrastructure) - [Discover the open source trio you didn’t expect: .NET and PostgreSQL on Linux](https://www.wearedevelopers.com/videos/2042-discover-the-open-source-trio-you-didn-t-expect-net-and-postgresql-on-linux) ## Related Articles - [10 Highest Paying Programming Languages 2025](https://www.wearedevelopers.com/magazine/150-10-highest-paying-programming-languages-2025) - [Everything a Developer Needs to Know About MCP with Neo4j](https://www.wearedevelopers.com/magazine/604-everything-a-developer-needs-to-know-about-mcp-with-neo4j) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers)