Sydney, Australia | Posted on 07/27/2026
Urgentrequirement of
Senior Calypso Developer - Contract - Sydney
Requirements
Description:
We are seeking an experienced
Senior Calypso Developer
to work on complex trading and post-trade platforms within a financial market?s 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.
Integration & APIs
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
Platform Ownership & Support
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
Delivery & Collaboration
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
Required Skills & Experience
Core Technical Skills
Strong hands-on experience with
Calypso Trading & Risk Management Platform
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
Calypso Functional Knowledge
End-to-end
trade lifecycle expertise
across Front, Middle, and Back Office
Post-trade processes including
confirmations, settlements, clearing, margining, and reconciliations
Understanding of
risk, valuation, P&L;, collateral management
, and static/reference data
Integration & Infrastructure
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 robust plus
Ways of Working
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
Nice to Have
Experience supporting
regulatory-driven change
Exposure to
high-availability or mission-critical trading platforms
Experience with DevOps practices, CI/CD pipelines, or performance tuning
Duration: 06 Months
andpossible extension
Eligibility:
Australian/NZCitizens/PR Holders only
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📌 Senior Calypso Developer - Contract - Sydney (New South Wales)
🏢 Hastha Solutions
📍 New South Wales