Calypso Developer

System One
Pittsburgh, PA

Job Title: Calypso Developer
Location: Pittsburgh, Pennsylvania
Type: Direct Hire

Work Model: Onsite – onsite
Hours: 40.0
Security Clearance:

Overview
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Responsibilities

  • Design, develop, customize, and support Calypso applications, workflows, extensions, and integrations supporting multiple asset classes, including Foreign Exchange (FX), FX Options, Interest Rate Products, Commodities, Credit Derivatives, and Exchange-Traded Derivatives.
  • Develop enterprise applications using Java, Spring Framework, Spring Boot, REST APIs, microservices, JBoss (or equivalent application servers), and messaging technologies while following secure software engineering best practices.
  • Design, build, and maintain integrations between Calypso and enterprise applications, market utilities, and third-party platforms, including DTCC SDR, MarkitWire, Bloomberg TOMS, SEF platforms, AcadiaSoft, TriResolve, WebICE, SWIFT, General Ledger systems, FedWire, and ACH.
  • Develop cloud-native solutions utilizing AWS, containerization technologies, Infrastructure as Code (IaC), CI/CD pipelines, and DevSecOps practices.
  • Design, optimize, and maintain SQL queries, database structures, ETL processes, and enterprise data integrations supporting trading operations, regulatory reporting, risk management, and analytics.
  • Partner with business users, quantitative analysts, risk management teams, operations, solution architects, and development teams to translate business requirements into scalable technical solutions.
  • Support production releases, troubleshoot complex application issues, perform root cause analysis, and continuously improve platform performance, stability, and resiliency.
  • Optimize Calypso application performance through tuning, monitoring, and continuous improvement initiatives.
  • Participate in solution architecture reviews, technical design sessions, code reviews, and modernization initiatives while mentoring junior developers and promoting engineering best practices.
  • Contribute to the company's Capital Markets technology practice by identifying opportunities for automation, innovation, cloud modernization, and continuous improvement.

Requirements

  • Bachelor's degree in Computer Science, Information Systems, Engineering, or a related technical discipline.
  • 5+ years of enterprise software development experience, including at least 3 years of hands-on Calypso development within Capital Markets environments.
  • Strong experience customizing and extending the Calypso platform, including workflows, APIs, trade lifecycle processing, back-office operations, and enterprise integrations.
  • Advanced proficiency with Java, Spring Framework / Spring Boot, RESTful APIs, Microservices architecture, JBoss or comparable enterprise application servers, and messaging technologies (JMS, MQ).
  • Strong understanding of Capital Markets products and trade processing, including FX, FX Options, Interest Rate Products, Commodities, Credit Derivatives, Exchange-Traded Derivatives, Market Risk, and Credit Risk.
  • Extensive experience with SQL, relational databases, data modeling, ETL development, and enterprise data integration.
  • Experience developing cloud-native applications using AWS (preferred) or Azure, including CI/CD pipelines and DevSecOps tools such as Jenkins, Bitbucket, Nexus, Terraform, or similar technologies.
  • Experience designing secure, scalable, and highly available enterprise applications using modern software engineering and cloud architecture best practices.
  • Strong analytical, troubleshooting, communication, and stakeholder management skills with experience supporting business-critical production systems.
  • Experience working within Agile delivery methodologies such as Scrum, Kanban, or SAFe.
  • Experience integrating with financial messaging standards and payment networks including SWIFT, FedWire, and ACH.
  • Experience with Wall Street Systems, Nasdaq Spectrum, or other enterprise Capital Markets platforms is considered a strong plus.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

#M-
#LI-

Ref: #404-IT Pittsburgh


System One, and its subsidiaries including Joulé, ALTA IT Services, TeamPeople, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

Posted 2026-08-06

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