Full Stack Application Developer

Visa Hunt; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

Visa Hunt is seeking a talented Full Stack Engineer to design, develop, deploy, and maintain scalable web applications. You will own end-to-end development across frontend, backend, and cloud infrastructure, ensuring performance, security, and reliability in an agile DevOps environment.

You will work with modern frontend and backend stacks, contribute to CI/CD pipelines, and collaborate with QA and DevOps teams to deliver robust software.

Qualifications

• 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.

Responsibilities

• 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 QA engineers to ensure automated test coverage and proactively fix bugs and defects.
• Optimize full-stack CI/CD deployment strategies, enabling seamless releases.
• Collaborate 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 performance and developer productivity.

Skills

Full stack

Git workflows

Frontend & Backend

Education

Bachelor's degree in Computer Science

Tools

React.js

Node.js

NestJS

Ruby on Rails

Spring Boot

Job description

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.

EXPERIENCE AND SKILLS NEEDED

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.

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).

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.

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).

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).

Software Quality & Testing:

• Experience with unit and integration testing (Jest, Cypress, Playwright, Pact).
• Backend testing using Postman, Supertest, contract testing.

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).