Sydney, Australia | Posted on 07/27/2026

Urgentrequirement of Senior Calypso Developer - Contract - Sydney

Requirements

Description:

We are seeking an experiencedSenior Calypso Developerto work on complex trading and post-trade platforms within a financial market?s technology workplace. 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 & Customisation

- Design and developcustom Calypso solutionsusingJava, Calypso APIs, and framework components

- Implement and maintainCalypso workflows, custom actions, rules, scheduled tasks, and event processing

- Develop and enhancetrade workflows, lifecycle events, and post-trade processing logic

- Configure and extend Calypso functionality fortrade capture, confirmations, settlements, risk, valuation, and collateral

- Experience or exposure toCalypso Automated Testing Tool (CATT)for supporting automated regression testing, validating custom workflows/APIs, and ensuring solution stability across releases.

Integration & APIs

- Build 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 integrations

Platform Ownership & Support

- Performimpact analysisfor change requests, regulatory updates, and Calypso upgrades

- Troubleshoot complex production issues, performroot 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

Delivery & Collaboration

- Collaborate closely withBusiness Analyststo translate functional requirements into technical designs

- Work with architects to align solutions withenterprise and Calypso architecture standards

- Participate inAgile deliveryceremonies and contribute to continuous improvement initiatives

- Ensure adherence to coding standards, security, audit, and regulatory requirements

Required Skills & Experience

Core Technical Skills

- Robust hands-on experience withCalypso Trading & Risk Management Platform

- Extensive experience withCalypso APIs, custom engines, and frameworks

- Deep knowledge ofCalypso workflows, rules, tasks, events, and schedulers

- StrongSQLskills for data analysis, troubleshooting, and reconciliation

- Experience withUnix/Linux, shell scripting, and batch processing

Calypso Functional Knowledge

- End-to-endtrade lifecycle expertiseacross Front, Middle, and Back Office

- Post-trade processes includingconfirmations, settlements, clearing, margining, and reconciliations

- Understanding ofrisk, valuation, P&L;, collateral management, and static/reference data

Integration & Infrastructure

- Experience withmessaging frameworks(e.g., JMS, MQ)

- Familiarity withmarket data feedsand downstream reporting systems

- Knowledge ofCalypso upgrade and migration activitiesis a strong plus

Ways of Working

- Experience working inAgile / Scrumdelivery models

- Strong analytical, problem-solving, and debugging skills

- Ability to work independently in complex, regulated environments

- Excellent communication and collaboration skills

Nice to Have

- Experience supportingregulatory-driven change

- Exposure tohigh-availability or mission-critical trading platforms

- Experience with DevOps practices, CI/CD pipelines, or performance tuning

Duration: 06 Monthsandpossible extension

Eligibility:Australian/NZCitizens/PR Holders only

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📌 Senior Calypso Developer - Contract - Sydney (New South Wales)
🏢 Hastha Solutions
📍 New South Wales