Senior Full-Stack Architect & Tech Lead

FPT Asia Pacific; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

FPT Asia Pacific is seeking an experienced Senior Full Stack Software Engineer to provide technical leadership across a portfolio of enterprise digital products. This hands-on role combines full stack development, architecture, and modernization while driving engineering standards and delivery across multiple languages and codebases.

You will mentor engineers, own application stability, oversee migrations, and collaborate with product teams, business stakeholders, and technical peers to

Qualifications

• Minimum 7 years of hands-on Full Stack Software Engineering experience.
• Strong proficiency in JavaScript and/or TypeScript.
• Experience with modern frontend frameworks, preferably React.
• Experience designing and developing backend APIs and services.
• Experience with relational databases, preferably PostgreSQL.
• Proven ability to navigate, troubleshoot, and enhance applications across multiple languages and codebases.
• Experience working with both modern and legacy systems.
• Strong understanding of software architecture and application design principles.
• Ability to make technical and architectural decisions and evaluate engineering trade-offs.
• Solid knowledge of cloud-hosted applications and infrastructure.
• Experience with Docker and containerised deployments.
• Strong understanding of CI/CD pipelines and modern software delivery practices.

Responsibilities

• Own the overall technical health and engineering quality of a portfolio of digital products.
• Provide technical direction across multiple applications, languages, and codebases.
• Make sound architecture and design decisions based on scalability, maintainability, security, and operational requirements.
• Evaluate technical trade-offs when modernising, migrating, or maintaining existing systems.
• Identify technical risks and drive appropriate remediation plans.
• Design, develop, review, and deliver frontend and backend application changes.
• Maintain and enhance existing applications across both modern and legacy technology stacks.
• Troubleshoot and resolve complex production and application issues.
• Deliver bug fixes, security patches, infrastructure updates, and technical improvements.
• Provide L2/L3 application support and perform root-cause analysis.
• Ensure applications remain stable, secure, performant, and maintainable.
• Lead application migration, modernisation, and technology upgrade initiatives.
• Drive the transition of legacy applications and components to newer architectures and platforms.
• Assess technical dependencies and determine appropriate migration approaches.
• Coordinate migration activities across engineering, product, and stakeholder teams.
• Support application retirement, transition, and technical handover where required.
• Establish and maintain engineering standards for code quality, testing, code reviews, releases, and deployment.
• Conduct code reviews and ensure appropriate engineering quality gates are followed.
• Mentor and guide other engineers through technical reviews, pairing, and knowledge sharing.
• Promote good engineering practices across the development lifecycle.
• Support applications running within cloud-hosted and containerised environments.
• Work with Docker and CI/CD pipelines to support reliable application delivery.
• Analyse application logs, metrics, and system behaviour using AWS services such as ECS and CloudWatch.
• Use observability technologies such as OpenTelemetry for tracing, metrics, and logs.
• Drive improvements to application monitoring, troubleshooting, and operational resilience.
• Maintain architecture documentation, technical notes, runbooks, and handover materials.
• Ensure sufficient technical documentation exists to support long-term maintainability and knowledge transfer.
• Coordinate with engineers, product teams, business stakeholders, and external partners.
• Communicate technical risks, dependencies, priorities, and delivery considerations clearly to stakeholders.

Skills

JavaScript/TypeScript

React

Backend APIs

PostgreSQL

Cloud / AWS

Docker

CI/CD

OpenTelemetry

Git

SDLC & Agile

Leadership

Tools

Docker

AWS ECS

CloudWatch

OpenTelemetry

Job description

FPT Asia Pacific is seeking an experienced Senior Full Stack Software Engineer to provide technical leadership across a portfolio of enterprise digital products. This hands-on role combines full stack development, architecture, and modernization while driving engineering standards and delivery across multiple languages and codebases.

You will mentor engineers, own application stability, oversee migrations, and collaborate with product teams, business stakeholders, and technical peers to