Senior Calypso Integration Developer, Paris (on-site), International client

Job role: Senior Calypso Integration Developer.

Minimum experience: Over 10 years.

Studies required: Certified.

Language: English (C1) (Mandatory).

Location: Paris (on-site).

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.

Specific expertise:

• 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).

Location:

• Paris (on-site).

Rate:

• €445/day.