Johannesburg: Senior Java Developer (JHB Hybrid) posted by Datafin

February 11, 2026 Jobs in Central Johannesburg

Job Description

Senior Java Developer (JHB Hybrid)IT – Software Development
Johannesburg – Gauteng – South Africa

ENVIRONMENT:

DEVELOP cutting-edge & scalable solutions for account verification, means testing, and payment reconciliation as the next Senior Java Developer sought by a dynamic provider of custom-driven IT Solutions & Consulting in Joburg. You will support and maintain the Internal Projects and at Clients where the systems process up to 15 million applications monthly, design and implement payment file generation according to Bankserv specifications while participating in solution architecture definition and modelling. The successful incumbent must have Advanced proficiency with Java Enterprise Edition (JEE), Reactive Java VM development and Bankserv integration experience (file formats, protocols) with a proven track record of working with Payment processing systems.

DUTIES:

Core Development & Maintenance –

Support and maintain the Internal Projects and at Clients where the systems process up to 15 million applications monthly.
Develop and enhance Java Enterprise Edition applications with JPA persistence.
Build and maintain Reactive Java VM-based APIs for file processing and verification.
Implement high-volume payment processing capabilities integrated with Bankserv.
Develop solutions for account verification, means testing, and payment reconciliation.

Banking Platform Integration –

Design and implement payment file generation according to Bankserv specifications.
Develop reconciliation processes for VET files and EF70 responses.
Build account referral solutions integrating with commercial banks via Bankserv.
Implement means testing file processing with multiple banking partners.
Create audit transaction capabilities for all banking operations.

Solution Architecture & Design –

Participate in solution architecture definition and modelling.
Assess current system architecture and recommend improvements.
Develop functional and technical specifications.
Design scalable solutions meeting business objectives.
Provide technical guidance to development teams.

Career Development –

Skills transfer to CLIENT internal teams.
Training delivery capabilities.
Documentation and knowledge management.
Mentoring Junior Developers.
Technology innovation and research.

REQUIREMENTS:

Core Java Technologies –

Java Enterprise Edition (JEE) – Advanced proficiency.
JPA (Java Persistence API) – Expert level.
Reactive Java VM development – Strong experience.
Spring Framework – Comprehensive knowledge.
RESTful API development – Expert level.

Integration Technologies –

Oracle SOA Suite 12c components: API Gateway management, SFTP/File transfer protocols, Web Services (SOAP/REST).

Banking & Financial Systems –

Bankserv integration experience (file formats, protocols.)
Payment processing systems – Proven track record.
Financial reconciliation processes.
Account verification systems.
Means testing implementations.

Required Banking Domain Knowledge –

High-volume transaction processing (250K+ transactions/month preferred).
Payment gateway integrations.
Bank account verification processes.
Electronic Funds Transfer (EFT) systems.
Cash send services implementation.
Financial audit trails and compliance.

Specific Banking Integrations –

Experience with Bankserv Africa or similar payment processors.
National Treasury web service integrations.
Commercial bank APIs and file-based interfaces.
Multi-bank payment reconciliation.

Architecture & Design –

Enterprise Integration Architecture design.
Service Oriented Architecture (SOA) implementation.
High-availability system design.
Scalable application architecture.
Security-first design principles.

Business Analysis –

Requirements gathering and analysis.
Process mapping and optimization.
Risk assessment and mitigation.
Performance tuning and optimization.
Change Management processes.

Compliance & Security –

Understanding of financial regulations.
Data security and privacy principles.
Audit trail implementation.
Fraud prevention mechanisms.
Government sector experience advantageous.

Project Experience –

Banking platform implementations.
High-volume payment processing projects.
Government or public sector experience preferred.
Agile/SDLC methodology experience.
24/7 production support experience.

Performance Expectations –

80-90% of service requests resolved at 1st Line support level.
2-hour Response time for critical issues.
Continuous improvement and optimization initiatives.

ATTRIBUTES:

Strong problem-solving abilities.
Excellent communication skills (English fluency required).
Ability to work under pressure with critical systems.
Team collaboration and mentoring capabilities.
Client-facing experience preferred.

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About Development Jobs in Gauteng

The development job market in Gauteng, South Africa is thriving, with numerous opportunities available in various sectors. The province is home to a large portion of the country’s economic hubs, including Johannesburg, Pretoria, and Ekurhuleni, making it an attractive location for companies looking to expand their operations. As a result, there is a growing demand for skilled developers who can drive innovation and growth.

Salaries in Gauteng are competitive, with average salary ranges varying depending on the specific role and industry. For example, software engineers can expect to earn between R600,000 – R1,200,000 per annum, while data analysts can earn between R400,000 – R800,000 per year. These figures are based on national averages, but salaries can vary widely depending on factors such as company size, experience, and specific job requirements.

To succeed in a development role in Gauteng, you will need to possess certain key skills. These include proficiency in programming languages such as Java, Python, or JavaScript, as well as experience with agile development methodologies like Scrum or Kanban. Additionally, knowledge of cloud computing platforms such as AWS or Azure is highly desirable, as is experience with data analysis tools like Tableau or Power BI. Other essential skills include problem-solving abilities, strong communication skills, and the ability to work collaboratively in a team environment.

Several major companies and industries are actively hiring for development roles in Gauteng. For example, tech giants such as Microsoft and IBM have large operations in the province, while financial institutions like Standard Bank and Absa also employ numerous developers. Additionally, there are many startups and innovative companies based in Gauteng that are driving growth and innovation in various sectors.

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For those interested in a development career in Gauteng, there are numerous opportunities for career growth and advancement. Many companies invest heavily in employee training and development programs, providing opportunities for professionals to gain new skills and advance their careers. Additionally, the province is home to several top-ranked universities and research institutions, offering a range of academic programs in computer science and related fields. With hard work and dedication, it is possible to build a successful career as a developer in Gauteng, with many opportunities for advancement and professional growth available.

This information provides general career guidance. Actual salaries and requirements vary by employer.

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