Senior Full Stack Developer - GS26025

Role summary

Senior Full Stack Developer - GS26025 is a contract role at Activate Interactive Pte Ltd in Singapore, Singapore (on-site). Posted 2026-10-07. Experience level: 5-10.

Job title

Senior Full Stack Developer - GS26025

Company

Activate Interactive Pte Ltd

Location

Singapore, Singapore

Work arrangement

on-site

Employment type

contract

Category

Software Engineering

Experience level

5-10

Date posted

2026-10-07

Job description

Activate Interactive Pte Ltd (“Activate”) is a leading technology consultancy headquartered in Singapore with a presence in Malaysia and Indonesia. Our clients are empowered with quality, cost-effective, and impactful end-to-end application development, like mobile and web applications, and cloud technology that remove technology roadblocks and increase their business efficiency.

We believe in positively impacting the lives of people around us and the environment we live in through the use of technology. Hence, we are committed to providing a conducive environment for all employees to realize their full potential, who in turn have the opportunity to continuously drive innovation.

We are searching for our next team members to join our growing team.

If you love the idea of being part of a growing company with exciting prospects in mobile and web technologies that create positive impact on people’s lives, then we would love to hear from you.

This is a 12-months fixed term contract role.

We are seeking an experienced Senior Consultant - Full-Stack Developer to lead the technical development and delivery of our mobile web application/progressive web app (PWA) project. The successful candidate will provide expert technical consultation, drive development excellence, and ensure the delivery of scalable, high-performance, and secure web applications whilst working closely with stakeholders and development teams.

Take full ownership of end-to-end application development, integrating frontend, backend, and cloud infrastructure

Design, develop, and maintain advanced responsive, accessible, and performant web applications

Implement frontend architectures using React Native, ensuring enterprise-level reusability, scalability, and security

Develop and architect high-performance backend services and APIs, ensuring reliability, security, and observability

Lead WhatsApp Business API integration implementation and provide technical consultation on messaging platform integrated with backend business workflow

Continuously evaluate and adopt emerging technologies to improve application performance and developer productivity

Lead technical discussions with stakeholders and translate business requirements into technical solutions

Proactively identify and resolve complex bugs and performance issues

Drive continuous improvement in software quality and development processes

Lead the design and optimization of full-stack CI/CD deployment strategies, ensuring seamless and automated releases

Establish automated infrastructure provisioning, monitoring, and cloud deployment strategies

Ensure comprehensive full-stack security implementation, including authentication, authorization, API security, and frontend security best practices

Lead IM8 security controls implementation and provide consultation on government security frameworks

Establish security review processes and ensure adherence to government compliance requirements

Drive security-first development practices and provide security consultation to development teams

Education and Experience

Degree or Diploma in Computer Science, Computer or Electronics Engineering, Information Technology, or related disciplines

Minimum 7 years of experience in full-stack web development with proven track record of delivering complex projects

Minimum 2-3 years of experience in senior technical or consulting roles

Experience in client-facing consulting and stakeholder management

Strong proficiency in both frontend and backend development with architectural knowledge

Experience with Git and advanced branching workflows (GitFlow, trunk-based development)

Frontend Technologies

Expert-level experience with React.js and modern frontend frameworks (Next.js, Vue.js, Angular, or Svelte)

Extensive mobile app development expertise using React Native (critical requirement)

Advanced knowledge of UI component libraries such as Material-UI, Tailwind CSS, or Bootstrap

Experience with wireframing and prototyping tools (Figma) and design system implementation

Deep understanding of progressive web app development and modern frontend architectures

Backend Technologies

Advanced proficiency in Node.js, Express.js, or NestJS

Strong experience with additional backend technologies such as Ruby on Rails, Java/Kotlin (Spring Boot), Python (Django, Flask, FastAPI), or Golang

Expert-level experience in API design principles, including RESTful APIs, GraphQL, gRPC, and WebSockets for service communication

Advanced knowledge of API rate limiting, caching strategies (Redis, Varnish), and performance optimizations

Strong understanding of backend service scalability strategies (horizontal scaling, autoscaling, load balancing)

Observability & Monitoring

Advanced experience implementing application performance monitoring (APM) tools (Datadog, New Relic, Sentry, Prometheus, OpenTelemetry)

Expert knowledge of logging frameworks (ELK Stack, Loki, Fluentd) to track and debug issues across distributed systems

DevOps, Cloud, and Infrastructure

Advanced experience with CI/CD pipelines (GitHub Actions, GitLab CI, ArgoCD, Jenkins)

Expert-level hands-on experience with cloud platforms (AWS, Azure, Google Cloud, Cloudflare Workers)

Extensive experience with Government Commercial Cloud (GCC) environment

Advanced experience with containerization and orchestration (Docker, Kubernetes)

Strong familiarity with Infrastructure as Code (IaC) tools (Terraform, CloudFormation, Pulumi)

Security Best Practices

Expert knowledge of frontend security (CSP, CORS, XSS prevention)

Advanced experience with backend security (OAuth, JWT, API rate limiting, encryption)

Deep understanding of IM8 security policies and government compliance frameworks

Strong familiarity with cloud security (IAM, Secrets Management, OWASP Top 10)

Experience implementing comprehensive security strategies across full-stack applications

Software Quality & Testing

Advanced experience with unit and integration