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Calypso Lead Developer (API + Core Java)

Lister Digital
Gurugram, Haryana

Apply Now

Job details

Full-time
8 hours ago

Qualifications

Spring Boot
CI/CD
Performance tuning
Azure
Oracle
JUnit
Kubernetes
XML
Regulatory reporting
Git
Java
Microservices
SQL
OOP
AWS
Docker
PostgreSQL
Continuous integration
Accounting
REST
Calypso
APIs
Agile
Investment banking
Linux
Maven
Multithreading
Jenkins
JMS
GitLab
Communication skills
Spring framework
Design patterns

Full job description

About This Role

6 years of experience
Skills: Calypso, Core Java, REST API, Calypso API, Spring Boot, SQL, Oracle, Capital Markets, Microservices, Git, Maven, Linux, CI/CD, Agile, Fixed Income / Derivatives / FX

About the Role
We are looking for a Calypso Lead Developer with 6+ years of experience specialising in Calypso API development and Core Java customisation. You will lead the design, development, and delivery of Calypso-based solutions — building robust API integrations, custom extensions, and platform enhancements across our capital markets technology estate. You will combine deep Calypso platform expertise with strong Core Java and API development skills — delivering high-quality, scalable, and maintainable solutions that support trading, risk, back office, and regulatory requirements.

Key Responsibilities

Calypso API & Core Java Development

Lead the design and development of Calypso API integrations — building robust, performant REST and Calypso-native API solutions that connect Calypso with internal and external systems.
Develop complex Calypso customisations using Core Java — extending Calypso platform functionality for bespoke trading, back office, and accounting requirements.
Design and implement Calypso event-driven integrations — configuring message-based interfaces using MQ, JMS, and SWIFT for real-time and batch data exchange.
Build and maintain Calypso plugin extensions — developing custom calculators, workflow actions, and business logic extensions aligned to capital markets business requirements.
Design and develop RESTful APIs that expose Calypso data and functionality to downstream consumers — risk systems, reporting platforms, and front office applications.
Lead code reviews — enforcing Calypso development standards, Core Java best practices, and API design principles across the development team.
Mentor and guide junior Calypso developers — sharing platform expertise, Java development skills, and capital markets domain knowledge.

Calypso Platform Configuration & Integration

Configure and maintain Calypso modules — trade capture, back office, accounting, and risk — aligned to business and regulatory requirements.
Design and implement Calypso interface configurations — SWIFT, FIX, MQ, XML, and REST — connecting Calypso with front office, risk, finance, and external counterparty systems.
Manage Calypso static data configuration — counterparty, product, account, and workflow definitions — ensuring accuracy and consistency across environments.
Support Calypso platform upgrades — conducting impact assessments, updating customisations, and validating functional integrity across version transitions.
Implement Calypso batch processing workflows — scheduling, dependency management, and failure handling for end-of-day and intraday processing cycles.
Conduct Calypso performance tuning — optimising API response times, batch processing throughput, and database query performance for high-volume capital markets workloads.

Technical Architecture & Delivery

Contribute to technical architecture decisions — providing Calypso API and Core Java expertise to solution design, integration patterns, and platform evolution discussions.
Design scalable, maintainable integration architectures — applying microservices patterns, event-driven design, and API-first principles to Calypso integration solutions.
Write and maintain comprehensive unit and integration tests — JUnit, Mockito — ensuring code quality and regression confidence across all Calypso customisations and API solutions.
Build and maintain CI/CD pipelines for Calypso development — automating build, test, and deployment workflows using Jenkins or GitLab CI.
Produce clear technical documentation — API specifications, integration designs, customisation guides, and deployment runbooks.
Collaborate with Solution Architects, Business Analysts, and Operations teams — translating capital markets business requirements into well-designed Calypso technical solutions.

Capital Markets Domain

Apply strong capital markets domain knowledge — financial instruments (fixed income, FX, derivatives, equities, repos), trade lifecycle, and back office processes — to design accurate, fit-for-purpose Calypso solutions.
Support front office, middle office, risk, and finance teams — providing Calypso API and technical expertise to resolve data, integration, and platform issues.
Contribute to regulatory reporting initiatives — MiFID II, EMIR, APRA — designing Calypso API solutions that accurately extract and deliver regulatory data to reporting platforms.

What We're Looking For

6+ years of Calypso platform development experience with deep expertise in Core Java customisation and API development in capital markets environments.

Strong Core Java skills — advanced OOP, design patterns, multithreading, and performance optimisation — applied to Calypso platform customisation and extension development.

Proven Calypso API development experience — REST API design and development, Calypso-native API integration, and event-driven interface implementation.

Deep Calypso platform knowledge — trade capture, back office, accounting, and risk modules — with strong understanding of Calypso architecture and customisation framework.

Strong capital markets domain knowledge — financial instruments, trade lifecycle, back office operations, and regulatory reporting requirements.

Advanced SQL skills — Oracle / PostgreSQL — complex querying, stored procedures, and performance tuning for Calypso database layers.

Experience with messaging technologies — MQ, JMS, SWIFT — for Calypso interface and integration development.

Hands-on CI/CD experience — Jenkins or GitLab CI — for automated Calypso build, test, and deployment pipelines.

Proven technical leadership — leading Calypso development teams, conducting code reviews, and mentoring junior developers.

Excellent communication and stakeholder management skills — engaging business, operations, and technology stakeholders effectively.

Nice to Have

Spring Boot experience — building microservices and REST APIs alongside Calypso integrations.
Knowledge of FIX protocol — order and execution data integration with Calypso.
Experience with cloud platforms — AWS or Azure — for Calypso infrastructure hosting and API deployment.
Familiarity with Calypso collateral management and regulatory reporting modules.
Knowledge of APRA regulatory reporting requirements and Australian market conventions.
Exposure to containerisation — Docker / Kubernetes — for Calypso API microservices deployment.
Calypso certification or formal Calypso training programme completion.
Experience in Investment Banking, Capital Markets, or Asset Management environments.

Apply now

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