Job Description
Sydney, Australia | Posted on 07/27/2026
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Urgentrequirement of Senior Calypso Developer - Contract - Sydney
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Requirements
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Description:
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We are seeking an experiencedSenior Calypso Developerto work on complex trading and post-trade platforms within a financial market?s technology environment. This role is hands-on and requires deep expertise inCalypso development, Java, APIs, and Calypso workflows, supporting the full lifecycle of system development, enhancement, and production support.
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The successful candidate will design, develop, and support robust Calypso solutions across front-to-back-office processes, working closely with business analysts, architects, and support teams to deliver scalable, high-performance, and regulatory-compliant solutions.
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Calypso Development & Customisation
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Design and developcustom Calypso
solutionsusingJava,
Calypso APIs, and framework components
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Implement and maintainCalypso workflows, custom actions, rules, scheduled tasks, and event processing
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Develop and enhancetrade workflows, lifecycle events, and post-trade processing logic
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Configure and extend Calypso functionality fortrade capture, confirmations, settlements, risk, valuation, and collateral
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Experience or exposure toCalypso Automated Testing Tool (CATT)for supporting automated regression testing, validating custom workflows/APIs, and ensuring solution stability across releases.
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Integration & APIsn
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Build and supportreal-time and batch integrationsusing Calypso APIs (XML, REST, JMS, messaging frameworks)




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Develop and maintain interfaces withupstream and downstream systems(trading, market data, clearing, settlement, reporting)
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Support inbound and outbound messaging, feeds, and file-based integrations
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Platform Ownership & Supportn
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Performimpact analysisfor change requests, regulatory updates, and Calypso upgrades
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Troubleshoot complex production issues, performroot cause analysis, and implement permanent fixes
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Optimise system performance, scalability, and stability across Calypso components
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Support BAU activities including incident resolution, release deployments, and enhancements
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Delivery & Collaborationn
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Collaborate closely withBusiness Analyststo translate functional requirements into technical designs
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Work with architects to align solutions withenterprise and Calypso architecture standards
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Participate inAgile deliveryceremonies and contribute to continuous improvement initiatives
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Ensure adherence to coding standards, security, audit, and regulatory requirements
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Required Skills & Experiencen
Core Technical Skills
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Strong hands-on experience withCalypso Trading & Risk Management Platform
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Extensive experience withCalypso APIs, custom engines, and frameworks
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Deep knowledge ofCalypso workflows, rules, tasks, events, and schedulers
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StrongSQLskills for data analysis, troubleshooting, and reconciliation
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Experience withUnix/Linux, shell scripting, and batch processing
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Calypso Functional Knowledgen
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End-to-endtrade lifecycle expertiseacross Front, Middle, and Back Office
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Post-trade processes
includingconfirmations,
settlements, clearing, margining, and reconciliations
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Understanding ofrisk, valuation, P&L;, collateral management, and static/reference data
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Integration & Infrastructuren
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Experience withmessaging frameworks(e.g., JMS, MQ)
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Familiarity withmarket data feedsand downstream reporting systems
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Knowledge ofCalypso upgrade and migration activitiesis a robust plus
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Ways of Workingn
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Experience working inAgile / Scrumdelivery models
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Strong analytical, problem-solving, and debugging skills
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Ability to work independently in complex, regulated environments
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Excellent communication and collaboration skills
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Nice to Haven
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Experience
supportingregulatory
-driven change
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Exposure tohigh-availability or mission-critical trading platforms
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Experience with DevOps practices, CI/CD pipelines, or performance tuning
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Duration: 06 Monthsandpossible extensionn
Eligibility:Australian/NZCitizens/PR
Holders only
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📌 Senior Calypso Developer - Contract - Sydney (New South Wales)
🏢 Hastha Solutions
📍 New South Wales