Senior Calypso Developer - Capital Markets (Implementation & Transformation)

We are seeking experienced Calypso Developers to join high-profile transformation and implementation programmes within global capital markets environments. Calypso is a large-scale, front-to-back trading platform supporting trading, risk management and post-trade processing across asset classes, built on a robust Java-based architecture. This opportunity involves complex greenfield implementations, upgrades and transformation initiatives, collaborating with global teams across EMEA, North America and APAC.

Quick Facts

• Hybrid-by-design working model with the opportunity to work remotely within Poland
• Opportunity to work abroad for up to 60 days annually
• Business-driven relocation opportunities
• Open to working with contractors; B2B cooperation terms are agreed individually
• Benefits listed are available to employees only.
• Only selected candidates will be contacted

Responsibilities

• Design, develop and deliver Calypso solutions across the full trade lifecycle within large-scale implementation and transformation programmes
• Collaborate with Front Office, Risk, Operations and Technology stakeholders to translate business requirements into technical solutions
• Support greenfield implementations, version upgrades and transformation initiatives across global capital markets environments
• Integrate Calypso with external systems through APIs, messaging and batch processing
• Contribute to the full software development lifecycle, from analysis and design through deployment and post-go-live support
• Develop and maintain unit and integration tests to ensure high-quality deliverables
• Partner with development and testing teams across EMEA, North America and APAC to deliver within complex, fast-paced programmes
• Provide technical expertise on the Calypso object model and architecture to guide design decisions
• Troubleshoot and resolve complex technical issues across trading, risk and post-trade processes

Requirements

• Proven experience as a Calypso Developer on implementation, upgrade or transformation programmes
• Hands-on expertise in Calypso, preferably v16+, and a strong understanding of the Calypso object model and architecture
• Solid Java development skills, including Spring and Hibernate
• Full software development lifecycle experience with strong object-oriented analysis and design skills
• Understanding of the trade lifecycle, including front-office, risk and back-office processes
• Knowledge of one or more asset classes: Rates, FX, Credit, Equities or Commodities
• Experience integrating Calypso with external systems through APIs, messaging and batch processing
• Proficiency in SQL and relational databases
• Ability to write unit and integration tests
• Strong problem-solving ability in fast-paced delivery environments
• Ability to collaborate effectively with development and testing teams

Benefits

• Career development programmes
• Thought leadership, mentoring, soft-skills and well-being programmes
• Certification opportunities: Anthropic, Gemini, GCP, Azure and AWS
• English classes
• Stable pay
• Participation in the Employee Stock Purchase Plan with a 15% discount
• Benefits package including health insurance, multisport and shopping vouchers
• Referral bonuses up to $2,000
• Offices with entertainment and relaxation zones, table tennis, football, free snacks and coffee
• Corporate, social and well-being events