Tomasz Tomczyk.
Engineering Leader · Croydon, United Kingdom
I am a pragmatic, product-focused engineer with over 15 years’ experience. I’m comfortable owning ambiguous problems end to end: leading products and teams, making difficult decisions and coordinating incident response when things go wrong. I love growing teams and people in cross-functional, highly autonomous environments while continuously learning and iterating.
In spare time, I build Crit , a review tool for iterating on agent output used by engineers daily.
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Vetspire
Staff Engineer ·
Solving difficult technical challenges across the organisation: strengthening security across the codebase to enable successful customer audits, reducing DB CPU from ~99% to ~40% and setting the technical direction for the product. Helped retain key accounts by resolving their most critical product issues.
Head of Engineering ·
Grew and directly managed the engineering team from 3 to 12, distributed between the US and UK.
Developed and promoted two senior engineers into Tech Lead roles.
Led two reorganisations as the company evolved, steering it towards autonomous, cross-functional product teams.
Advised on architecture, mentored colleagues and remained hands-on for about 50% of my time.
Senior Software Engineer ·
Built customer-centric features, working directly with enterprise customers to understand their requirements and iterate on solutions.
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Toyota Connected Europe
Senior Software Engineer ·
Led a team delivering an Elixir-based car-sharing platform for international Toyota markets. Helped shape product direction, owned relationships with clients and partners and represented the technical voice of the team within the wider business.
In the absence of CTO/VPE roles at the company, supported the growth of engineers on the team by conducting regular 1on1s, facilitating feedback and planning professional development. I also led the recruitment process and engineering interviews.
Worked hands-on with Phoenix/Absinthe APIs and managed DevOps, including Kubernetes deployments, CI/CD automation and cloud infrastructure.
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uSwitch.com
Lead Software Engineer ·
Led product delivery and technical direction for a cross-functional team, line-managing three developers, an analyst and a UX designer. Worked hands-on with Elixir, Rails and React.js, delivering new features and A/B tests that grew the team's revenue.
Senior Developer ·
Led full-stack and DevOps projects, introduced Elixir to the company and used A/B testing to deliver statistically significant improvements in conversion.
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Streaming Tank
Senior Developer — Built a live-commerce SPA and mentored junior developers.
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Cyber-Duck
Senior Developer — Delivered full-stack projects and supported client pitches.
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A local-first review tool for reviewing and iterating on coding-agent output. It supports browser-based, line-specific feedback across plans, code changes, running applications and HTML artefacts. It has 700+ GitHub stars and is used by engineers at Spotify, Figma, Fastly, Forter, Datadog and more.
University of Bedfordshire
Bachelor's degree in Computer Science · First Class · 2007 - 2010