Sydney, Australia | Posted on 07/27/2026Urgentrequirement of Senior Calypso Developer - Contract - SydneyRequirementsDescription: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.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.Calypso Development & CustomisationDesign and developcustom Calypso solutionsusingJava, Calypso APIs, and framework componentsImplement and maintainCalypso workflows, custom actions, rules, scheduled tasks, and event processingDevelop and enhancetrade workflows, lifecycle events, and post-trade processing logicConfigure and extend Calypso functionality fortrade capture, confirmations, settlements, risk, valuation, and collateralExperience or exposure toCalypso Automated Testing Tool (CATT)for supporting automated regression testing, validating custom workflows/APIs, and ensuring solution stability across releases.Integration & APIsBuild and supportreal-time and batch integrationsusing Calypso APIs (XML, REST, JMS, messaging frameworks)Develop and maintain interfaces withupstream and downstream systems(trading, market data, clearing, settlement, reporting)Support inbound and outbound messaging, feeds, and file-based integrationsPlatform Ownership & SupportPerformimpact analysisfor change requests, regulatory updates, and Calypso upgradesTroubleshoot complex production issues, performroot cause analysis, and implement permanent fixesOptimise system performance, scalability,



and stability across Calypso componentsSupport BAU activities including incident resolution, release deployments, and enhancementsDelivery & CollaborationCollaborate closely withBusiness Analyststo translate functional requirements into technical designsWork with architects to align solutions withenterprise and Calypso architecture standardsParticipate inAgile deliveryceremonies and contribute to continuous improvement initiativesEnsure adherence to coding standards, security, audit, and regulatory requirementsRequired Skills & ExperienceCore Technical SkillsStrong hands-on experience withCalypso Trading & Risk Management PlatformExtensive experience withCalypso APIs, custom engines, and frameworksDeep knowledge ofCalypso workflows, rules, tasks, events, and schedulersStrongSQLskills for data analysis, troubleshooting, and reconciliationExperience withUnix/Linux, shell scripting, and batch processingCalypso Functional KnowledgeEnd-to-endtrade lifecycle expertiseacross Front, Middle, and Back OfficePost-trade processes includingconfirmations, settlements, clearing, margining, and reconciliationsUnderstanding ofrisk, valuation, P&L;, collateral management, and static/reference dataIntegration & InfrastructureExperience withmessaging frameworks(e.g., JMS, MQ)Familiarity withmarket data feedsand downstream reporting systemsKnowledge ofCalypso upgrade and migration activitiesis a solid plusWays of WorkingExperience working inAgile / Scrumdelivery modelsStrong analytical, problem-solving, and debugging skillsAbility to work independently in complex, regulated environmentsExcellent communication and collaboration skillsNice to HaveExperience supportingregulatory-driven changeExposure tohigh-availability or mission-critical trading platformsExperience with DevOps practices, CI/CD pipelines, or performance tuningDuration: 06 Monthsandpossible extensionEligibility:Australian/NZCitizens/PR Holders only
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📌 Senior Calypso Developer - Contract - Sydney (New South Wales)
🏢 Hastha Solutions
📍 New South Wales