Open to opportunities

Ash Chez

@ashchez

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Senior full-stack engineer who delivers end-to-end production systems across TypeScript, React, Node.js, and Python.

United Kingdom

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What I'm looking for

I’m looking to own end-to-end feature delivery in a product-focused team—building reliable TypeScript/React services with strong testing and observability. I want to apply AI/LLM tooling thoughtfully and ship at scale with clear ownership.

I’m a senior full-stack engineer with 5+ years owning features end-to-end—from system design and backend APIs through frontend architecture, testing, and deployment. I thrive on building production-grade services that are maintainable, observable, and designed for real users at scale.

At Checkatrade, I rebuilt the native app homepage (iOS & Android) for the Trades product used by 100,000+ tradespeople across the UK. I also overhauled the trade profile UI on checkatrade.com, improving UX and user flow while strengthening test coverage. Under the hood, I maintained and extended a BFF layer and microservices built on Node.js with Fastify and zod, and delivered GCP-hosted services deployed via Kubernetes with observability through Datadog.

Earlier, at Authentise, I built “Threads” from scratch for enterprise clients like Boeing and Amazon using React (TypeScript) and Python (Django/FastAPI). I designed and launched “Guidelines,” an award-winning recommendation algorithm, and helped drive 2 new client acquisitions that contributed to $4M Annual Recurring Revenue in 2022. I also developed “Copilot” across backend (FastAPI) and frontend (React) UX, and later led an AI proof-of-concept for automated trade appointment booking using Model Context Protocol (MCP).

Experience

Work history, roles, and key accomplishments

Software Engineer

Checkatrade

Dec 2024 - Feb 2026 (1 year 2 months)

Rebuilt the Trades native app homepage (iOS/Android) used by 100,000+ tradespeople, shipping a redesigned onboarding UI and dynamic marketing content cards. Overhauled trade profile UX, improved test coverage, maintained Node.js/Fastify BFF microservices, and delivered GCP-hosted services on Kubernetes with Datadog observability, including an MCP-based AI booking proof of concept.

TypeScript React Node Fastify Microservices BFF Kubernetes GCP Datadog Model Context Protocol (MCP)

Software Engineer

Authentise

May 2022 - Dec 2024 (2 years 7 months)

Built Threads, a manufacturing collaboration platform from scratch for enterprise clients including Boeing and Amazon, using React (TypeScript) and Python (Django/FastAPI). Designed and launched Guidelines recommendation algorithm, contributing to 2 new client acquisitions and $4M ARR in 2022, and developed Copilot (FastAPI backend + React UX) across the aMES platform.

React TypeScript Python Django fastAPI Redux Recommendation Systems REST APIs

Software Engineer

Bentley Motors

Jan 2021 - May 2022 (1 year 4 months)

Built a full-stack EV battery-management app in C# to meet Chinese legislative requirements, reducing manual error and improving team productivity. Designed and built a secure credential manager used by CAD designers on luxury vehicles sold in 65+ countries.

C React Credential Manager Security Engineering Full Stack Compliance Requirements User Experience