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Tommy Verrall

@tommyverrall

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Head of Engineering Quality & Systems Integration—building DevOps and AI test pipelines at scale.

Switzerland

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What I'm looking for

I’m looking to lead engineering quality as an embedded, self-service capability—owning DevOps, cloud cost control, and automated testing pipelines. I want to build secure systems (including data-sovereign AI workflows) that reduce manual review and speed delivery.

I’m Head of Engineering Quality and Systems Integration, with 10+ years architecting high-scale infrastructure, production-grade AI testing pipelines, and decentralised systems. My focus is shifting quality left—turning QA from gate-keeping into an enabling, embedded infrastructure-and-tooling capability teams can use every day.

At Nym Technologies (NymVPN), I led the rebrand of QA into Engineering Quality and Systems Integration, and built privately hosted, air-gapped LLM workflows that deliver data sovereignty while reducing manual review cycles by 40%. I also designed context-window and token-usage management patterns to control inference costs without sacrificing analysis depth across large test corpora.

I own the infrastructure cost model end-to-end—introducing right-sizing, spot-instance strategies, and environment lifecycle automation to cut monthly cloud spend by 35%. I’ve delivered major engineering outcomes including operator-grade reliability (20+ validator nodes through five protocol upgrades with zero downtime), and faster delivery via Ansible, Terraform, and CI/CD automation.

Earlier, I led QA teams for crypto and banking platforms, driving FCA-aligned reliability and automated regression coverage across 100+ test cases while reducing front-end testing time by 40%. I’m equally at home building systems like end-to-end Playwright suites and security-first tooling (passfort), or defining execution strategy as precisely as production Rust or TypeScript.

Experience

Work history, roles, and key accomplishments

Current

Head of Engineering Quality

Current

Nym Technologies Sa

Oct 2021 - Present (4 years 8 months)

Architected and led the rebrand of QA into Engineering Quality & Systems Integration, embedding quality tooling and DevOps support into development cycles. Delivered an air-gapped LLM testing workflow that reduced manual review cycles by 40% and cut monthly cloud spend by 35%, while improving deployment time by 60%.

Air Gapped LLM Hosting Playwright CI CD Infrastructure as Code Cloud Cost Optimization Ansible Terraform Cloudflare Workers DevOps

Head of Quality Assurance

Ziglu

Mar 2020 - Oct 2021 (1 year 7 months)

Led a QA team of 3 engineers to ensure reliability and FCA compliance for a cryptocurrency exchange and banking platform processing thousands of daily transactions. Built Playwright CI/CD test coverage and developed automation frameworks that reduced front-end testing time by 40% and materially reduced production defects via 100+ regression cases.

Playwright CI CD Appium Cypress Regression Testing Test Coverage

Head of Quality Assurance

Chip London

Jul 2019 - Mar 2020 (8 months)

Led 3 QA engineers delivering automated testing frameworks across mobile applications and backend services. Reduced production defect rate by 25% through CI/CD QA workflows and cut manual testing time by 50% by automating test deployments and improving release cadence.

Automated Testing Mobile Testing Backend Testing Agile Scrum Test Framework Release Engineering

Senior QA Engineer

Just Eat

Jan 2019 - Jun 2019 (5 months)

Validated machine-learning experiments on the growth platform, contributing to a 10% uplift in customer retention. Built automation frameworks in C# and WebdriverIO to support experiment validation.

C++WebdriverIO Test Automation Automation Framework Regression Testing

QA Engineer

Asos

Aug 2017 - Jan 2019 (1 year 5 months)

Delivered automated regression packs in C# to protect platform stability for millions of users. Implemented Azure GDPR compliance functions and managed the JavaScript SDK supporting the ASOS login experience.

Test Automation SDK QA Automation

QA Engineer

Win Technologies (Betway Group)

Mar 2015 - Jul 2017 (2 years 4 months)

Provided QA across high-volume affiliate marketing systems, internal CMS, and public-facing platforms. Supported reliability and quality efforts for production services through structured test execution and automation where applicable.

QA For High Volume Systems Test Execution Affiliate Marketing Systems Regression Testing

Open Source Developer

Passfort

Built and maintained the Passfort open-source Next.js middleware that provides password protection for Vercel deployments at zero cost. Implemented security-first primitives (PBKDF2-SHA256, HMAC-signed cookies, timing-safe comparisons) and edge-native routing protection, reducing reliance on paid Vercel features.

Next.js Vercel Edge Runtime PBKDF2 SHA256 Hashing HMAC Signed Cookies Timing Safe Comparisons Javascript Typescript NPM Package Publishing Timing Safe Comparison