Full-Stack Engineer (AI Applications)

About the role

Activate Interactive, a technology consultancy in Singapore, is recruiting a Full-Stack Engineer for a 12-month fixed-term contract, based in Balestier with a hybrid arrangement. The engineer works on AI products and platform capabilities for the Ministry of Education, including voice-first learning assistants, teacher feedback tools, AI-enabled procurement workflows and shared AI platform foundations.

Key responsibilities

• Design, build, test, deploy and operate production AI applications across the Ministry of Education
• Write high-quality full-stack software using TypeScript, NestJS, React, Postgres and AWS
• Integrate LLM and multimodal APIs in production, including prompting, tool/function calling, streaming, voice interaction, retrieval and memory patterns
• Build evaluation pipelines for AI quality, safety, regression testing and human review
• Improve observability across AI products, including traces, logs, metrics, user feedback loops and model behaviour monitoring
• Turn prototypes of emerging AI capabilities into maintainable product or platform components
• Work with product managers, designers, data scientists, governance colleagues, GovTech Central and MOE stakeholders

Required profile

• Strong software engineering fundamentals: system design, testing, debugging, CI/CD, observability, security and maintainable code
• Demonstrated ability to build production-grade full-stack applications and services
• Hands-on experience (or strong working knowledge) of LLM application development
• Clear thinking about AI system quality: evals, regression tests, failure modes, monitoring and human review
• Ability to communicate clearly with engineers and non-technical stakeholders

Required skills

• Nice to have: TypeScript, NestJS, React, Vite, Postgres, AWS, Langfuse or OpenTelemetry
• Nice to have: integrating AI services such as OpenAI or Anthropic
• Nice to have: RAG, tool calling, agentic workflows, voice interfaces or AI evaluation frameworks
• Nice to have: familiarity with education, public-sector systems or high-trust digital services

What we offer

• Competitive market salary and a variable performance bonus
• Outpatient and specialist medical coverage, flexible benefits or flexi allowance, life and health insurance, and perks such as red packets and CNY goodies
• Wellness support, learning programmes, certification support and a staff development budget
• Structured career pathways on a technical or leadership track, with a competency framework
• Flexible work arrangements (flexi-place, flexi-time, flexi-load)