Senior Software Engineer, Fullstack

Seoulstart; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Seoulstart in Singapore is seeking an experienced software engineer to design, build and maintain full-stack features using React, TypeScript and Golang. You will lead technical design for support journeys across Help Centre and internal platforms.

You will build scalable microservices, own production readiness, and mentor engineers while raising engineering quality through code reviews. Familiarity with AI-assisted development and LLM APIs is a plus.

Qualifications

• 4+ years of professional software engineering experience with strong full-stack skills.
• Hands-on experience with React and TypeScript for frontend and Golang for backend.
• Good understanding of distributed systems, API design and reliability trade-offs.
• Experience leading technical design and delivering projects independently.
• Familiarity with AI-assisted development including coding agents and LLM APIs.

Responsibilities

• Design, build and maintain full-stack features using React, TypeScript and Golang.
• Lead technical design for support journeys across Help Centre and internal platforms.
• Build scalable, observable microservices that integrate with downstream systems.
• Own production readiness including monitoring, alerting and incident response.
• Mentor engineers and raise the engineering quality bar through code review.

Skills

Full-stack

React

TypeScript

Golang

Distributed systems

API design

Reliability

Job description

What you'd do:

• Design, build and maintain full-stack features using React, TypeScript and Golang
• Lead technical design for support journeys across Help Centre and internal platforms
• Build scalable, observable microservices that integrate with downstream systems
• Own production readiness including monitoring, alerting and incident response
• Mentor engineers and raise the engineering quality bar through code review

What they want:

• 4+ years of professional software engineering experience with strong full-stack skills
• Hands-on experience with React and TypeScript for frontend and Golang for backend
• Good understanding of distributed systems, API design and reliability trade-offs
• Experience leading technical design and delivering projects independently
• Familiarity with AI-assisted development including coding agents and LLM APIs

Nice to have:

• Experience with Temporal or other workflow orchestration systems
• Experience building AI-powered support automation or chatbot flows
• Experience with ticketing systems, Help Centre or CRM platforms 4+ years of professional software engineering experience with strong full-stack skills
• Hands-on experience with React and TypeScript for frontend and Golang for backend
• Good understanding of distributed systems, API design and reliability trade-offs
• Experience leading technical design and delivering projects independently
• Familiarity with AI-assisted development including coding agents and LLM APIs