Senior Full Stack Developer; Java & Platform Engineering

Momentum Group Limited is a significant player in South Africa's life insurance and integrated financial services sectors. We are a Level 1 B‑B‑BEE South African‑based group dedicated to building and protecting our clients' financial dreams. Our client‑facing retail and specialist brands, including Momentum, Metropolitan, Guardrisk, and Eris Properties, play a pivotal role in fulfilling this purpose.

Our federated model emphasises empowerment, accountability, and continuous engagement with all our stakeholders. Designed in close consultation with leaders across the group, this operating model aims to unleash each business unit's inherent energy and commercial drive through our collaborative federated approach. Visit us at

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As an applicant, please verify the legitimacy of this job advert on our company career page.

Lead the design, development, deployment, and operation of microservices and platform capabilities on AWS EKS using Java 21 and Spring Boot. Own critical engineering decisions across application and platform layers (runtime, CI/CD, observability, security), and ensure delivery quality, performance, reliability, and cost efficiency.

• 10 years professional software engineering experience, with 5 years leading microservice design and delivery on Spring Boot in production.
• 5 years hands‑on platform engineering with Docker/Kubernetes and AWS EKS (cluster operations, upgrades, autoscaling, ingress, observability).
• Proven ownership of mission‑critical systems (high availability, disaster recovery, performance engineering).
• Demonstrable experience in CI/CD, automated testing (unit/integration/contract), and secure coding practices.
• Relevant IT degree/diploma; advanced certifications advantageous (e.g., AWS Certified Developer/Dev Ops Engineer, Kubernetes certifications).
• Strong grounding in computer science fundamentals (algorithms, data structures, distributed systems).

• Architecture & Design:
  Contribute to the definition and evolution of microservice and API architectures (domain boundaries, reliability patterns, security controls) using Java 21, Spring Framework/Spring Boot, Tomcat (embedded), and REST; apply concurrency/performance features where appropriate.
• Platform Engineering:
  Design, implement, and operate container platforms (Docker, Kubernetes) on AWS EKS—including cluster provisioning, node pools, autoscaling, upgrade strategies, ingress, service mesh (if applicable), multi‑environment topology, as well as networking, VPC, and subnet setups within the AWS tenant.
• Platform Engineering:
  Establish Infrastructure as Code (e.g., Terraform/Cloud Formation), Gitlab pipelines (e.g., Argo CD/Flux), and golden path templates for services.
• Cloud Engineering:
  Engineer solutions on AWS (e.g., EKS, EC2, RDS, S3, IAM, VPC, ECR, Cloud Watch) with secure‑by‑default patterns (network segmentation, least privilege, secrets management).
• Delivery Excellence:
  Own CI/CD for services and platforms (build, test, security scanning, artifact management, progressive delivery/blue‑green/canary).
• Quality & Non‑Functionals:
  Define and verify NFRs (performance, scalability, resiliency, security) and implement automation (contract tests, integration tests, performance tests).
• Reliability & Operations:
  Lead complex incident resolution and drive permanent fixes through architectural improvements.
• Documentation:
  Produce technical specifications and operational playbooks; ensure traceability from requirements to deployed solutions.
• Governance & Compliance:
  Ensure adherence to secure coding standards (e.g., OWASP), data protection (e.g., POPIA), architecture guardrails, and risk controls.

• Engage with product owners, business stakeholders, and operations to translate requirements into robust solutions and set clear expectations on timelines, risks, and trade‑offs.
• Uphold service levels and proactively identify opportunities to improve customer outcomes through reliability, performance, and usability.

• Technical Leadership:
  Mentor and coach engineers; lead peer reviews; set coding standards and best practices across teams.
• Knowledge Sharing:
  Facilitate…