Urgent requirement of Senior Calypso Developer - Contract - SydneyRequirementsDescription:We are seeking an experienced Senior Calypso Developer to work on complex trading and post-trade platforms within a financial market?
s technology setting.
This role is hands-on and requires deep expertise in Calypso 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.Key Roles & ResponsibilitiesCalypso Development & CustomisationDesign and develop custom Calypso solutions using Java, Calypso APIs, and framework componentsImplement and maintain Calypso workflows, custom actions, rules, scheduled tasks, and event processingDevelop and enhance trade workflows, lifecycle events, and post-trade processing logicConfigure and extend Calypso functionality for trade capture, confirmations, settlements, risk, valuation, and collateralExperience or exposure to Calypso Automated Testing Tool (CATT) for supporting automated regression testing, validating custom workflows/APIs, and ensuring solution stability across releases.Integration & APIsBuild and support real-time and batch integrations using Calypso APIs (XML, REST, JMS, messaging frameworks)Develop and maintain interfaces with upstream and downstream systems (trading, market data, clearing, settlement, reporting)Support inbound and outbound messaging, feeds, and file-based integrationsPlatform Ownership & SupportPerform impact analysis for change requests, regulatory updates, and Calypso upgradesTroubleshoot complex production issues, perform root 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 with Business Analysts to translate functional requirements into technical designsWork with architects to align solutions with enterprise and Calypso architecture standardsParticipate in Agile delivery ceremonies and contribute to continuous improvement initiativesEnsure adherence to coding standards, security, audit, and regulatory requirementsRequired Skills & ExperienceCore Technical SkillsStrong hands-on experience with Calypso Trading & Risk Management PlatformExpert-level Java development (server-side, performance-optimised code)Extensive experience with Calypso APIs, custom engines, and frameworksDeep knowledge of Calypso workflows, rules, tasks, events, and schedulersStrong SQL skills for data analysis, troubleshooting, and reconciliationExperience with Unix/Linux, shell scripting, and batch processingCalypso Functional KnowledgeEnd-to-end trade lifecycle expertise across Front, Middle, and Back OfficeAsset classes: Rates, FX, Fixed Income, Derivatives, ReposPost-trade processes including confirmations, settlements, clearing, margining, and reconciliationsUnderstanding of risk, valuation, P&L;, collateral management, and static/reference dataIntegration & InfrastructureExperience with messaging frameworks (e.g., JMS, MQ)Familiarity with market data feeds and downstream reporting systemsKnowledge of Calypso upgrade and migration activities is a strong plusWays of WorkingExperience working in Agile / Scrum delivery modelsStrong analytical, problem-solving, and debugging skillsAbility to work independently in complex, regulated environmentsExcellent communication and collaboration skillsNice to HaveExperience supporting regulatory-driven changeExposure to high-availability or mission-critical trading platformsExperience with DevOps practices, CI/CD pipelines, or performance tuningDuration: 06 Months and possible extensionEligibility: Australian/NZ Citizens/PR Holders onlyEmail:

📌 Senior Calypso Developer - Contract - Sydney
🏢 Hastha Solutions
📍 Sydney