Tabish Bidiwale
Founder of Fission; creator and lead maintainer of OpenSpec
Sydney, Australia
Summary
Open-source builder and maintainer: Tabish is the lead maintainer and creator of OpenSpec, an open-source spec-driven framework designed to add durable, reviewable specifications to AI-assisted software development workflows. github+1
Founder focused on human–AI planning: As founder of Fission, he advocates transparent, iterative planning for agentic tools—building products and writing about methods that let humans inspect and steer AI plans before execution. fissionai+1
Experienced backend engineer: Tabish worked in backend roles at Q-CTRL (graduate, backend, and senior backend engineering roles across 2020–2025) and has presented and written about engineering practices, performance, and tooling. q-ctrl
Community speaker and educator: He presents publicly (AI Tinkerers Sydney meetup, Founder Friday interview) and publishes practical how-to writing about spec-driven development and working effectively with LLMs. aitinkerers+2
Work
Education
Projects
Writing
Go slow to go fast!
October 1, 2025A howibuild.ai guest article on the value of spec-driven development and a practical workflow (Research → Plan → Implement) when building with LLMs; includes examples from OpenSpec.
Why We're Building Fission
April 1, 2025Explains the motivation and vision behind Fission: making AI planning transparent, iterative, and collaborative so humans can steer agentic workflows rather than being ‘teleported’ by AI.