Overview
Consultancy to carry out full-stack development and operations activities across the Open Code Infrastructure (OCI) platform, focusing on feature development, bug fixes, and dual-compatible metadata engineering for AI in healthcare platforms.
Key Responsibilities
- Implement new features and enhancements on both platforms, covering backend logic, REST APIs, frontend interfaces, and database changes.
- Diagnose and resolve reported bugs and issues across the full stack.
- Ensure new code follows existing architectural patterns and coding standards.
- Implement and test code changes in the Croissant repository to address dual-compatibility blockers with Bioschemas.
- Create validator or linter rules or plugins that check both Croissant and Bioschemas expectations.
- Add unit and integration tests, fixtures, and CI hooks to prevent regressions on dual compatibility.
- Prepare minimal examples and documentation demonstrating successful dual validation.
- Open PRs and upstream issues to the Croissant repository or maintain a clean BioCroissant extension package.
- Maintain technical documentation covering architecture, deployment procedures, and API specifications.
- Document operational procedures and troubleshooting guides.
Required Experience
- At least three (3) years of progressively responsible experience in software development and documentation for the relevant technical areas.
- Experience in full-stack development with TypeScript on both ends — Node.js services (NestJS or comparable) and a modern React framework.
- Experience with JSON / JSON-LD, schemas, and validation (e.g., Zod, JSON Schema, Croissant / BIOCroissant).
- Experience with the following technical environment: OCI Platform (target stack).
- Backend: Node.js 24 LTS, TypeScript 6, NestJS 11 (modular monolith), Prisma 7, BullMQ.
- Eval sandbox: Python 3.x - only for the sandboxed runner that executes participant Docker images.
- Frontend: Next.js 16 (App Router, React Server Components, Turbopack), React 18+, Tailwind v4, shadcn/ui.
- Database: PostgreSQL 16 (AWS Aurora Serverless v2), Prisma migrations, multi-schema.
- Auth: AWS Cognito (OIDC/OAuth2), aws-jwt-verify, MFA for admin/regulator/supervisor roles.
- Infrastructure: AWS CDK (TypeScript), ECS Fargate, ALB, S3, SQS, ECR, KMS, WAFv2, Secrets Manager.
- CI/CD: GitHub Actions with OIDC role assumption (no static AWS keys); per-env deploy pipelines.
- Observability: CloudWatch, AWS X-Ray, OpenTelemetry, pino structured logging, Container Insights.
- Security tooling: Trivy, Gitleaks, CycloneDX SBOM in every PR; distroless Node base images.
- API contracts: OpenAPI 3.1 via NestJS Swagger module; Zod schemas shared FE/BE via @oci/shared-types.
- Testing: Vitest 4 (unit + integration with Testcontainers), Playwright 1.59 (E2E + a11y).
- Knowledge of FAIR principles and data interoperability concepts; exposure to Croissant / ML metadata schemas is a plus.
Qualifications
University degree in computer science, software engineering, information technology, or a related field OR education from a reputed college of advanced education, with a diploma of equivalent standard to that of a university degree in one of the fields above.
