Josh Wellham is a hands-on engineering leader and investment manager with 11 years of professional experience and over 17 years of development history, currently leading two engineering teams at Wonde and managing crypto portfolios and security for large investors. He has shipped five products used by 30,000 schools and helped drive a freemium-to-ARR transition generating ~£1.6–2M annually, while still architecting systems, reviewing code, and building AI-first prototypes. Technically fluent across React, Next.js, TypeScript, Node, Vue, Laravel and relational databases, he also integrates LLMs, RAG pipelines and real-time pose estimation into production apps. A contributor to DefinitelyTyped test suites, he brings pragmatic open-source QA experience alongside enterprise-grade engineering practices (Product Trio, DORA metrics). Josh blends product-focused leadership with deep implementation skills and a security-minded approach from his crypto advisory work, fostering ownership cultures where engineers thrive.
11 years of coding experience
16 years of employment as a software developer
National Diploma, Information Technology, National Diploma, Information Technology at West Suffolk College
The repository for high quality TypeScript type definitions.
Role in this project:
QA Engineer / Test Automation Engineer
Contributions:9 commits, 1 PR, 1 comment in 7 days
Contributions summary:Josh contributed by adding and updating tests within the `dot-object` type definition repository. They implemented tests for the `str` and `pick` functions, ensuring the correct behavior of the type definitions. Their work included modifying test files and verifying functionality within the context of TypeScript type definitions. Furthermore, they bumped the version and updated the `.d.ts` files, indicating active maintenance and improvements to the definition's accuracy.
Contributions:153 commits, 2 PRs, 48 pushes in 4 months
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Josh Wellham - Investment Manager And Security Advisor at Wonde