Senior Calypso Developer Contract Sydney

We are seeking an experienced Senior Calypso Developer to work on complex trading and post-trade platforms within a financial markets technology environment. 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.

Calypso Development & Customisation

• Design and develop custom Calypso solutions using Java Calypso APIs and framework components
  
• Implement and maintain Calypso workflows custom actions rules scheduled tasks and event processing
  
• Develop and enhance trade workflows lifecycle events and post-trade processing logic
  
• Configure and extend Calypso functionality for trade capture confirmations settlements risk valuation and collateral
  
• Experience or exposure to Calypso Automated Testing Tool (CATT) for supporting automated regression testing validating custom workflows/APIs and ensuring solution stability across releases.
  

• Build 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 integrations
  

• Perform impact analysis for change requests regulatory updates and Calypso upgrades
  
• Troubleshoot complex production issues perform root cause analysis and implement permanent fixes
  
• Optimise system performance scalability and stability across Calypso components
  
• Support BAU activities including incident resolution release deployments and enhancements
  

• Collaborate closely with Business Analysts to translate functional requirements into technical designs
  
• Work with architects to align solutions with enterprise and Calypso architecture standards
  
• Participate in Agile delivery ceremonies and contribute to continuous improvement initiatives
  
• Ensure adherence to coding standards security audit and regulatory requirements
  

Core Technical Skills

• Strong hands-on experience with Calypso Trading & Risk Management Platform
  
• Expert-level Java development (server-side performance-optimised code)
  
• Extensive experience with Calypso APIs custom engines and frameworks
  
• Deep knowledge of Calypso workflows rules tasks events and schedulers
  
• Strong SQL skills for data analysis troubleshooting and reconciliation
  
• Experience with Unix/Linux shell scripting and batch processing
  

• End-to-end trade lifecycle expertise across Front Middle and Back Office
  
• Asset classes: Rates FX Fixed Income Derivatives Repos
  
• Post-trade processes including confirmations settlements clearing margining and reconciliations
  
• Understanding of risk valuation P&L collateral management and static/reference data
  

• Experience with messaging frameworks (e.g. JMS MQ)
  
• Familiarity with market data feeds and downstream reporting systems
  
• Knowledge of Calypso upgrade and migration activities is a strong plus
  

• Experience working in Agile / Scrum delivery models
  
• Strong analytical problem-solving and debugging skills
  
• Ability to work independently in complex regulated environments
  
• Excellent communication and collaboration skills
  

• Experience supporting regulatory-driven change
  
• Exposure to high-availability or mission-critical trading platforms
  
• Experience with DevOps practices CI/CD pipelines or performance tuning