Job Description

nUrgent requirement of Senior Calypso Developer - Contract - Sydney n
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Description: n
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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.

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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.

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Key Roles & Responsibilities n
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Calypso Development & Customisation

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- Design and develop custom Calypso solutions using Java , Calypso APIs, and framework components

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

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

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

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

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Integration & APIs n
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- Build and support real-time and batch integrations using Calypso APIs (XML, REST, JMS, messaging frameworks)

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- Develop and maintain interfaces with upstream and downstream systems (trading, market data, clearing,



settlement, reporting)

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- Support inbound and outbound messaging, feeds, and file-based integrations

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Platform Ownership & Support n
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- Perform impact analysis for change requests, regulatory updates, and Calypso upgrades

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- Troubleshoot complex production issues, perform root cause analysis , and implement permanent fixes

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- Optimise system performance, scalability, and stability across Calypso components

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- Support BAU activities including incident resolution, release deployments, and enhancements

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Delivery & Collaboration n
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- Collaborate closely with Business Analysts to translate functional requirements into technical designs

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

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- Participate in Agile delivery ceremonies and contribute to continuous improvement initiatives

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

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Required Skills & Experience n
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Core Technical Skills

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- Robust hands-on experience with Calypso Trading & Risk Management Platform

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- Expert-level Java development (server-side, performance-optimised code)

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- Extensive experience with Calypso APIs , custom engines, and frameworks





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- Deep knowledge of Calypso workflows , rules, tasks, events, and schedulers

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- Strong SQL skills for data analysis, troubleshooting, and reconciliation

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- Experience with Unix/Linux , shell scripting, and batch processing

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Calypso Functional Knowledge n
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- End-to-end trade lifecycle expertise across Front, Middle, and Back Office

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- Asset classes: Rates, FX, Fixed Income, Derivatives, Repos

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- Post-trade processes including confirmations, settlements, clearing, margining, and reconciliations

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

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Integration & Infrastructure n
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- Experience with messaging frameworks (e.g., JMS, MQ)

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- Familiarity with market data feeds and downstream reporting systems

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- Knowledge of Calypso upgrade and migration activities is a strong plus

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Ways of Working n
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- Experience working in Agile / Scrum delivery models

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- Strong analytical, problem-solving, and debugging skills

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- Ability to work independently in complex, regulated environments

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- Excellent communication and collaboration skills

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Nice to Have n
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- Experience supporting regulatory-driven change

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- Exposure to high-availability or mission-critical trading platforms

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

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Duration: 06 Months and possible extensionn
Eligibility: Australian/NZ Citizens/PR Holders onlyn
Email: n

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