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William FortyWF
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William Forty

@williamforty

Principal Software Engineer at OneBot leading a backward-compatible migration to multi-tenant AWS microservices.

United Kingdom
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At OneBot, I’m leading the migration of a monolithic chatbot app to a backward-compatible, multi-tenant microservices platform on AWS. I also built an AI support agent that answers from each customer’s own knowledge base and hands conversations to a person when it can’t help.

At Doefin, I led frontend development of a prediction market on Bitcoin mining difficulty, then moved into backend work on gasless trading. Before launch, I found critical smart-contract bugs, including bets settling in the wrong direction.

I’ve worked across fintech and trading platforms at Archax, CloudMargin and Nationwide, and earlier built software and developer tools at CDK Global and Halcrow. I also build my own products and AI-agent workspace, where Claude Code agents work across a portfolio of around 25 products.

Experience

Work history, roles, and key accomplishments

DO

Senior Software Engineer

Doefin

Sep 2024 - Oct 2026 (2 years 1 month)

Led frontend development of a prediction market on Bitcoin mining difficulty, building the platform from the ground up with Next.js, TypeScript, React, and Tailwind CSS. Integrated Web3 technologies and discovered critical smart-contract bugs before launch.

CG

Analyst Programmer → Scrum Master → Technical Lead → Senior Developer

CDK Global

Mar 2012 - Sep 2019 (7 years 6 months)

Led a team to first place at CDK's Connect Hackathon with a static-analysis parser that found around 1 million lines of dead code. Progressed through roles including Senior Developer, Technical Lead, and Scrum Master, building CI tools, IDE extensions, and low-level APIs.

HA

CAD Technician → CAD Systems Developer → 3D Digital Designer

Halcrow

Oct 2006 - Mar 2012 (5 years 5 months)

Started as a CAD technician on river and dam engineering projects and moved into software by automating the work. Built productivity tools in Visual Basic and an internal content management tool in PHP, JavaScript and CSS.

SN

Pricing Executive

Smiths News

Jul 2006 - Oct 2006 (3 months)

Managed national price changes for newspapers and magazines in SAP, and built VBA tools to speed up data handling and catch anomalies.

Education

Degrees, certifications, and relevant coursework

University of Wales, Newport logoUN

University of Wales, Newport

BSc (Hons), Computing

Grade: First Class

BSc (Hons) Computing with First Class honours from the University of Wales, Newport, completed in 2012.

BMW Group logoBG

BMW Group

NVQ Level 2, Mechanical Engineering

Completed an NVQ Level 2 in Mechanical Engineering through BMW Group.

SC

Swindon College

HNC and National Certificate, Mechanical Engineering

Earned an HNC and National Certificate in Mechanical Engineering from Swindon College.

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