Vetted

Jack W.

Senior Full-Stack Developer

Experience

9+ Years

Availability

Full-time

Location

🇸🇬 Orchard, Singapore

English

Native

React Node.js TypeScript AWS

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Verified by Second Talent Nov 2023

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About

Jack is a senior full-stack developer who builds SaaS products from architecture through to launch. With 9 years of experience across React, Node.js, and TypeScript, he has shipped products used by hundreds of thousands of users across B2B and B2C markets. He excels at taking fuzzy product requirements and turning them into clean, scalable codebases. His infrastructure experience with AWS means he owns the full stack from frontend to deployment, and he has a strong track record of mentoring junior developers and establishing engineering best practices.

Languages

English

Native

Mandarin

Fluent

Skills

Frontend

React Next.js TypeScript Tailwind CSS Redux React Query

Backend

Node.js Express NestJS GraphQL REST APIs

Database

PostgreSQL MongoDB DynamoDB Prisma Redis

Cloud

AWS (EC2, Lambda, S3, RDS, ECS) Vercel Docker Terraform

Testing

Jest Cypress Playwright React Testing Library

Experience

Senior Full-Stack Developer

2021 - Present

Carousell

Led development of the core product platform serving 800+ enterprise clients. Rebuilt the frontend from a legacy jQuery app to React + TypeScript, improving load times by 70% and developer velocity by 3x.

Platform serves 800+ enterprise clients with 99.9% uptime SLA
jQuery-to-React migration improved page load times by 70%
3x improvement in developer velocity after TypeScript + component library adoption

Full-Stack Developer

2018 - 2021

ShopBack

Built the marketplace platform from scratch using React, Node.js, and PostgreSQL. Implemented real-time messaging, payment processing (Stripe), and search infrastructure (Elasticsearch). Grew from 0 to 50K monthly active users.

Grew platform from 0 to 50K monthly active users in 18 months
Stripe payment integration processed $2M+ in transactions monthly
Elasticsearch-powered search handling 100K+ queries/day with <200ms p95 latency

Software Engineer

2015 - 2018

Accenture

Delivered full-stack solutions for banking and insurance clients. Built internal tools and dashboards using React and Express, and migrated legacy systems to cloud-native architectures on AWS.