Calypso Technical Developer

Discovery; Johannesburg; On-site; ZAR 1,000,000 - 1,800,000; Full time

Job summary

Discovery Limited, through Discovery Bank, seeks a Calypso Technical Developer in Johannesburg to advance Calypso architecture, APIs, and Java solutions. The role emphasizes translating business requirements into technical designs, developing Calypso workflows and messaging components, and maintaining high-quality deliverables.

Strong back-end Java and SQL skills, plus experience with SDLC and testing, are essential.

Qualifications

• 6+ years hands-on Calypso development, customization, and implementation.
• Expertise in Calypso platform versions 16+ including configuration and development.
• Proficiency in writing SQL queries to interact with Calypso databases.
• Experience with back-office processes such as SWIFT, settlements, CREs, accounting.
• Strong Java backend development experience (6+ years).
• Experience handling large data volumes and transactional systems.

Responsibilities

• Develop Calypso solutions by studying information needs and business workflows.
• Translate requirements into technical designs aligned with Discovery Bank standards.
• Develop and maintain Calypso workflows, tasks, and messaging components.
• Lead code reviews and mentor junior developers to ensure coding standards.
• Provide production support, root cause analysis, and incident response.
• Produce Technical Design documents and participate in JAD sessions.

Skills

Calypso development

Java development

SQL querying

Back-office knowledge

SDLC understanding

Unit testing

Education

BSc Computer Science/Information Systems

Tools

Spring

Spring Boot

Spring Web MVC

Spring JMS

Spring Kafka

MyBatis

HANA

JSON/Jackson

XML/JAXB

JUnit/Mockito

Docker

Openshift

Jenkins

Maven

Git/Bitbucket

IBM MQ

Job description

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Calypso Technical Developer

Business Unit: Discovery Bank

Function: Banking

Date: 20 Oct 2026

Calypso Technical Developer

About Discovery Discovery’s core purpose is to make people healthier and to enhance and protect their lives. We seek out and invest in exceptional individuals who understand and support our core purpose, and whose own values align with those of Discovery. Our fast-paced and dynamic environment enables smart, self-driven people to be their best. As global thought leaders, Discovery is passionate about innovating to not only achieve financial success, but to ignite positive and meaningful change within our society.

About Discovery Bank

Discovery Bank is a bank like no other – a shared-value bank, designed with our clients in mind. We are all about sharing the value that clients create when they manage their money well, back with them through exceptional interest rates and rewards. Our Vitality Money programme measures how well clients manage their finances, informs them of what it means to be financially healthy, and empowers them with the knowledge to get enhanced rewards for managing their money well. If you are adaptable, a problem-solver, always questioning the way things are done, passionate about doing what is right, and obsessed with providing a quality service experience, we have a job for you where you can be your best in an environment that’s safe and nurturing.

Job Purpose

The ideal candidate will have strong hands‑on experience with Calypso architecture, APIs, and Java development, along with a solid understanding of front-to-back trade flows across multiple asset classes. Also to translate business requirements into basic technical designs adhering to Discovery Bank Architecture standards .

Develop software solutions by studying information needs, conferring with business/users, studying systems flow, data usage and work processes, investigating problem areas and following the best practices in all the aspects of software development lifecycle.

Documents and demonstrate solutions by developing technical and functional documents, facilitating internal peer reviews to accomplish high quality of deliverables.

Develop and maintain Calypso Workflows, Scheduled Tasks, and Messaging Components.

Key Outcomes may include but are not limited to:

• Ensures that the application performs the functions as required by business.
• Ensures that the applications are maintainable and consider reuse, configurability, data footprints, processing speed, volumes and any other applicable non-functional requirements.
• Releases source code with zero defects.
• Leads and mentor’s junior developers during the code review process to ensure adherence to coding standards and best practices.
• Provides technical support, resolves production queries, and conducts root cause analysis.
• Participates in Business Requirement Joint Application Development (JAD) sessions.
• Analyze business requirements and clarify any unknowns with the Business Analyst or Business User.
• Formulates technical solutions and review them with the development team.
• Produces Technical Design documents using the standard template and in accordance with Discovery Bank standards.
• Set up Technical Analysis JAD sessions with all stakeholders to ensure alignment with business requirements.
• Implements Technical Specifications within the systems framework.
• Produces source code by applying technical standards and referencing existing components.
• Participates in the process of reviewing code for consistent application of standards, logic, and effective use of libraries and reusable aspects of the application.
• Responds to incidents escalated by the Incidents team.

Education and Experience:

• BSc Computer Science/Information Systems degree or other relevant degree from a recognised tertiary institution
• At least 6+ years of hands‑on experience in Calypso development, including customization, extension, and implementation
• Expertise in the Calypso platform (e.g., versions 16+) including configuration and development.
• Experience working with the Calypso API for integration, customization, Calypso reporting modules and risk management tools.
• Proficiency in writing SQL queries to interact with Calypso database tables is mandatory.
• Understanding of back‑office processes like SWIFT messages, Settlements, CREs, Accounting etc
• At least 6 years’ experience in source code development.
• At least 4 years’ experience in backend Java development
• Experience working with large data volumes
• Experience working in transactional systems

Technical skills or knowledge:

• Knowledge of SDLC, Unit Testing, Database structures, Technical Change Control
• Good understanding of Front-to-Back trade workflows in Calypso.
• Understanding of P&L, accounting setup, curves, and market data configuration.
• Strong knowledge of Fixed Income, FX, Interest Rate, and Credit Derivatives.
• Knowledge of Back Office operations – static data, transfers, settlements, and position configuration.
• Technical Stack
• Spring
• Spring Boot
• Spring Web MVC (REST)
• Spring Expression Language (SpEL)
• Spring JMS
• Spring Kafka
• MyBatis
• HANA (ANSI SQL)
• JSON / Jackson
• XML / JAXB
• JUnit /Mockito
• Docker
• Openshift
• Jenkins
• Maven
• Git / Bitbucket
• IBM MQ
• Ability to do Business Writing, Software development within SDLC, Data modelling and UML Design abilities

EMPLOYMENT EQUITY

The Company’s approved Employment Equity Plan and Targets will be considered as part of the recruitment process. As an Equal Opportunities employer, we actively encourage and welcome people with various disabilities to apply.