Senior Calypso Developer - Capital Markets (Implementation & Transformation)

We are expanding our Calypso practice and 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 is an opportunity to work on complex greenfield implementations, upgrades and transformation initiatives, collaborating with global teams across EMEA, North America and APAC.

Responsibilities

• Design, develop and deliver Calypso solutions across the full trade lifecycle within large-scale implementation and transformation programmes
• Collaborate closely 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 to 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 (v16+ preferred) with strong understanding of the Calypso object model and architecture
• Solid Java development skills including Spring and Hibernate
• Background in the full software development lifecycle (SDLC) with excellent object-oriented analysis and design skills
• Understanding of the trade lifecycle covering front office, risk and back-office processes
• Knowledge of asset classes such as Rates, FX, Credit, Equities or Commodities
• Experience integrating Calypso with external systems via APIs, messaging and batch processing
• Proficiency in SQL and relational databases
• Competency in writing unit and integration tests
• Strong problem-solving ability in fast-paced delivery environments
• Capability to collaborate effectively with development and testing teams

We offer

• Engineering community of industry professionals
• Friendly team and enjoyable working environment
• Flexible schedule and opportunity to work remotely within Poland
• Chance to work abroad for up to 60 days annually
• Business-driven relocation opportunities
• Outstanding career roadmap
• Leadership development, career advising, soft skills, and well-being programs
• Certification (GCP, Azure, AWS)
• Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru
• English classes
• Stable income (Employment Contract or B2B)
• Participation in the Employee Stock Purchase Plan
• Benefits package (health insurance, multisport, shopping vouchers)
• Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more
• Referral bonuses
• Corporate, social and well-being events

Please note: The set of bonuses might vary based on the role you apply for – specifics will be discussed during the general interview. We will reach out to selected candidates exclusively.