Full-Stack & AI Engineer specializing in observability, workflow automation, and secure-by-default platforms for banking and telecom. Based in Johannesburg, South Africa.
I have 7+ years designing and delivering reliable systems with a focus on performance, clarity, and secure-by-default architectures for regulated environments.
Experience: BMW IT Hub · Standard Bank · BBD (Vodacom) · Stackworx · Telkom
- 60% load-time reduction across critical workflows.
- 10s → 4s workflow performance at BMW IT Hub.
- 0 GL posting errors for two consecutive quarters.
- 30+ hours cut from month-end close.
- Fintech:
- accounts — unified ledger for multi-bank management with a Hono + Postgres core, Stitch connectivity, pay-by-bank initiation, recipient verification, sync health, and auditable ops.
- Ops:
- frad3ail — evidence-first PM/Ops log substrate that normalizes activities and generates investigation narratives with citations; CLI/API/web UI.
- AI:
- 8kno — terminal knowledge exploration CLI built with Bun + Vercel AI SDK; configurable depth/breadth; report artifacts.
- Media:
- doujin — cinematic editor UI shell with upload-first flow, blob preview, timeline layout, and AI chat panel; designed for a future S3 + Gemini + EDL pipeline.
- Platform & Tooling:
- sst-toolkit — explorer, CLI, and plugin SDK for SST state visualization, resource discovery, and component/adapter generation.
- ingest — serverless file ingestion with S3 presigned uploads, DynamoDB metadata, event-driven status updates, and a React UI with progress tracking.
- caderno — modular rich-text editor foundation with command/config architecture, ProseMirror transaction handling, and a streamlined build pipeline.
- Productivity:
- withlillian — local-first calendar agent with encrypted storage, privacy guardrails, CLI workflows, and a local API for agenda/insights.
More at: https://njabulomajozi.com/projects
- AI & Observability: AWS Bedrock, Anthropic (Claude), Gemini, AI SDK, OpenTelemetry, Prometheus, Grafana, Vector Search.
- Cloud & Infrastructure: AWS (Lambda, Step Functions, EventBridge, DynamoDB), Kubernetes, Docker, Pulumi, SST, OpenTofu, GitHub Actions.
- Backend Engineering: Node.js, TypeScript, Bun, Hono, Go, Event-Driven Architecture, GraphQL, OAuth 2.0/OIDC.
- Frontend & Mobile: React.js, React Native, Microfrontends, Swift (iOS), RxJS.