Job Description

Role title: Full Stack Developer (Fintech Systems)

Location: Midrand

Contract duration: 12 months

Key Responsibilities

Application Development & Engineering Excellence

Design, implement, and maintain secure, scalable microservices using Java (Spring Boot), Python, and/or C#. Build responsive and reusable frontend components using React, Angular, or Vue.js, aligned with UX/UI best practices. Implement asynchronous event handling, messaging queues, and API orchestration for end-to-end flows. Write clean, maintainable, and well-documented code with strong unit and integration test coverage. Champion modern engineering frameworks such as Microsoft Engineering Playbook.

Fintech Platform Integration & Customization

Customize and extend open-source core banking platforms like Apache Fineract to support lending, wallets, savings, and payment use cases. Integrate with mobile money, card networks, KYC/AML, credit scoring, and regulatory reporting APIs. Build and expose financial APIs following open banking and ISO 20022 standards. Develop adapters and abstraction layers to bridge legacy banking systems and modern services.

DevSecOps & Agile Delivery

Drive implementation of CI/CD pipelines using Jenkins, GitLab, SonarQube, JMeter, and GitOps workflows. Embed security controls, Telemetry and static/dynamic analysis into the development lifecycle as part of DevSecOps culture. Contribute to Agile ceremonies sprint planning, backlog grooming, retrospectives and act as a technical voice in estimation and prioritization.

Architecture, Frameworks & Technical Leadership

Guide technical solution design, aligning with enterprise architecture and standardized engineering frameworks. Establish and evolve reusable architectural patterns for APIs, data flows, authentication, and service communication. Perform code and design reviews to enforce adherence to engineering standards, performance benchmarks, and security best practices. Contribute to platform-wide engineering initiatives such as shared libraries, code generation tools, and build system improvements.

Code Quality, Governance & Support

Enforce code quality through static analysis, code coverage thresholds, and continuous improvement of development standards. Maintain clear and up-to-date technical documentation across services, interfaces, and platform configurations. Collaborate with QA and security teams to ensure rigorous testing and secure release cycles. Participate in production support, incident resolution, and root cause analysis to uphold platform resilience. Track and resolve technical debt and prioritize refactoring efforts during regular engineering cycles.

Technical Experience:

Backend Development & Architecture

6+ years of hands-on experience designing and building production-grade backend systems in Java (Spring Boot), with additional proficiency in Python or C# for service-oriented and event-driven architectures. Advanced understanding of microservices patterns, including API gateway design, service mesh, circuit breakers, and distributed tracing.

Frontend Engineering

Expertise in modern JavaScript frameworks including React, Angular, or Vue.js, with strong command of component-based architecture, state management (e.g., Redux, Vuex), and responsive design. Experience implementing progressive web applications (PWAs) and web accessibility (WCAG) standards. Skilled in integrating frontend interfaces with backend APIs securely and efficiently, including token management and input validation.

Core Banking & Fintech Platform Integration

Proven track record customizing and integrating open-source core banking platforms such as Apache Fineract, or proprietary equivalents. Experience with financial services workflows like digital lending, wallet transfers, savings automation, and transaction reconciliation. Familiarity with ISO 20022, SWIFT, and open banking standards (e.g., PSD2 APIs).

APIs, Messaging & Distributed Systems

Proficient in building RESTful APIs, GraphQL endpoints, and gRPC services, with strong understanding of serialization (JSON, Protocol Buffers). Experience with event-driven systems, using Apache Kafka, RabbitMQ, or AWS SNS/SQS for decoupling and real-time data exchange. Familiarity with API security standards such as OAuth2, OpenID Connect, and mutual TLS authentication.

Data & Persistence Layer

Deep understanding of data modelling, schema design, and performance tuning for relational databases (MySQL, PostgreSQL). Experience with NoSQL technologies like MongoDB, Cassandra, or Redis for high-velocity or schema-less data.

DevSecOps, CI/CD & Infrastructure Automation

Strong command of DevSecOps practices, embedding security scanning and compliance checks throughout the SDLC. Skilled in CI/CD pipeline setup and management using Jenkins, GitLab CI, or GitHub Actions, with integrated tools like: SonarQube, Checkmarx, OWASP ZAP, Snyk, Fortify, Nexus, Artifactory Familiarity with GitOps workflows, Canary deployments, and blue/green strategies using ArgoCD or Flux.

Cloud-Native Engineering & Observability

Experience deploying and operating applications on AWS, Azure, or Google Cloud, leveraging managed services (RDS, Cloud Functions, S3, IAM). Proficient with containerization using Docker, orchestration via Kubernetes, and secure Helm-based deployments. Setup and tuning of observability stacks including Prometheus, Grafana, ELK/EFK, and OpenTelemetry for metrics, logging, and tracing.

Security, Compliance & Governance

Deep knowledge of secure coding standards, OWASP Top 10, and regulated data handling (e.g., PCI-DSS, GDPR). Experience implementing role-based access control (RBAC), JWT management, and audit logging. Proven ability to work within regulated fintech environments, ensuring systems meet audit, compliance, and risk controls.

Must have technical / professional qualifications:

Bachelor's or Masters degree in Computer Science, Software Engineering, Information Systems, or a related field. Demonstrated success building and deploying financial solutions in regulated environments preferably involving digital wallets, savings, credit, or cross-border payments. * Experience contributing to system and solution architecture design, technical decision-making, and adherence to enterprise engineering standards.