HSA - Full Stack Engineer

Role Summary

Frontend Technologies

JavaScript and TypeScript.

Frontend frameworks such as React.js, Next.js, Vue.js, Angular, or Svelte.

Mobile app development using Swift (iOS), Kotlin (Android), or React Native.

UI component libraries such as Material-UI, Tailwind CSS, or Bootstrap.

Experience with wireframing and prototyping tools (Figma).

• Advanced experience in building complex, multi-step forms with validation
• Knowledge of form accessibility standards (WCAG 2.1 AA compliance)
• Experience with form state management and data persistence

Backend Technologies

Node.js, Express.js, NestJS.

Ruby on Rails (RoR).

Java/Kotlin (Spring Boot).

Python (Django, Flask, FastAPI).

Golang

RESTful APIs, GraphQL, gRPC, and WebSockets for service communication.

Observability & Monitoring

Experience implementing application performance monitoring (APM) tools

(Datadog, New Relic, Sentry, Prometheus, OpenTelemetry).

Knowledge of logging frameworks (ELK Stack, Loki, Fluentd) to track and

debug issues across distributed systems.

Ability to set up dashboards and alerts for real-time application health

monitoring.

Software Quality & Testing

Experience with unit and integration testing (Jest, Cypress, Playwright, Pact).

Backend testing using Postman, Supertest, contract testing.

Responsibilities

FULL-STACK ENGINEER

• RESPONSIBILITY
• The Full Stack Engineer is responsible for designing, developing, deploying, and
• maintaining scalable, high-performance, and secure web applications. The role
• requires expertise in frontend and backend development, cloud technologies, DevOps
• automation, and application security. Engineers must work in an agile, DevOps-driven
• environment, ensuring high software quality, security, and maintainability.
• Take full ownership of end-to-end application development, integrating
• frontend, backend, and cloud infrastructure.
• Design, develop, and maintain responsive, accessible, and performant web
• applications.
• Implement modern frontend architectures, ensuring reusability, scalability,
• and security.
• Develop high-performance backend services and APIs, ensuring reliability,
• security, and observability.
• Work with Quality Assurance (QA) engineers to ensure automated test
• coverage and proactively fix bugs and defects.
• Optimize full-stack CI/CD deployment strategies, ensuring seamless and
• automated releases.
• Work with DevOps teams to automate infrastructure provisioning, monitoring,
• and cloud deployments.
• Ensure full-stack security, including authentication, authorization, API
• security, and frontend security best practices.
• Continuously evaluate and adopt emerging technologies to improve
• application performance and developer productivity.

Requirements

Full Stack Development

• Degree or Diploma in Computer Science, Computer or Electronics
• Engineering, Information Technology, or related disciplines.
• Experience with Git and modern branching workflows (GitFlow, trunk-based
• development).
• Strong proficiency in both frontend and backend development.

Government Technology Integration

• Experience with Singapore Whole-of-Government (WoG) technology products,
• particularly FormSG, OPUS, OGRE, and OPTICAL platforms highly preferred
• Understanding of government digital service standards and compliance
• requirements
• Experience with government API integrations and data exchange protocols

Backend Scalability & API Design

• Strong experience in API design principles, including REST, GraphQL,
• gRPC, and WebSockets.
• Knowledge of API rate limiting, caching strategies (Redis, Varnish), and
• performance optimizations.
• Familiarity with backend service scalability strategies (horizontal scaling,
• autoscaling, load balancing).

DevOps, Cloud, and Infrastructure

• Experience with CI/CD pipelines (GitHub Actions, GitLab CI, ArgoCD, Jenkins).
• Hands-on experience with cloud platforms (AWS, Azure, Google Cloud,
• Cloudflare Workers).
• Experience with containerization and orchestration (Docker, Kubernetes).
• Familiarity with Infrastructure as Code (IaC) tools (Terraform, CloudFormation,
• Pulumi).
• Experience with Government Commercial Cloud (GCC) on AWS
• Understanding of GCC security frameworks and compliance requirements
• Experience with AWS services commonly used in GCC (EC2, RDS, S3, Lambda,
• API Gateway)

Security Best Practices

• Strong knowledge of frontend security (CSP, CORS, XSS prevention).
• Experience with backend security (OAuth, JWT, API rate limiting, encryption).
• Familiarity with cloud security (IAM, Secrets Management, OWASP Top 10).

Bonus Experience (Added Advantage)

• Experience with low-code platforms (OutSystems, Mendix, Appian).
• Familiarity with micro-frontends and modular frontend architectures.
• Experience working with edge computing (Cloudflare Workers, Lambda@Edge)