Sabenza IT & Recruitment - Senior Full Stack Developer

Full Stack Developer is needed in Johannesburg, South Africa.

Client: Sabenza IT & Recruitment

Location: Johannesburg, GT, za

Contract: Contract

Job Description

Build independent, composable micro frontend modules that integrate into a governed portal shell using runtime composition. Build domain-aligned, event-driven backend capabilities that support deterministic decisioning, versioning, and replay ability.

Responsibilities

Frontend Engineer (Composable Micro frontend Platform)

• Develop micro frontend modules (widgets, panels, tabs) using React and Next.js.
• Integrate via Module Federation and platform extension points.
• Use platform SDK for context, events, telemetry, and messaging.
• Ensure compliance with platform contracts and governance rules.
• Build responsive, accessible UI aligned to design system.
• Maintain performance budgets and emit telemetry.

Backend Engineer (Domain & Platform Capability Engineering)

• Own and implement domain capabilities (e.g. Party, Quotes, Pricing).
• Design APIs, events, and data ownership boundaries.
• Implement event-driven architecture (commands, events, projections).
• Build deterministic decision engines (pricing, underwriting, claims).
• Ensure full versioning discipline across APIs, events, and rules.
• Integrate systems via contracts, not direct coupling.
• API Gateway and BFF patterns.
• Open Policy Agent (OPA).
• Schema Registry and contract testing.
• Temporal or workflow engines.

Qualifications

• Matric and a Tertiary Degree.

Front End Required Skills

• React, Next.js (App Router), TypeScript.
• Module Federation or microfrontend architecture experience.
• State management (React Query / Zustand).
• Strong understanding of browser security (CSP, sandboxing).
• Experience with OpenTelemetry (frontend).
• Experience with design systems and component libraries.

Back End Required Skills

• .NET Core (preferred) or equivalent backend platform.
• PostgreSQL and Redis.
• Kafka and/or NATS JetStream.
• Event-driven architecture and event sourcing concepts.
• API design and versioning strategies.
• Cloud platforms (AWS and/or Azure).
• Containers (Docker, Kubernetes).
• Infrastructure as Code (Terraform).
• OpenTelemetry for observability.

Additional Information

No additional information provided in the original text.