Nick de Rozarieux — Lead Software Engineer · Full-Stack

Lead Software Engineer, Travelex

Nov 2025 – Present · London / Tonbridge

Promoted from Senior Software Engineer (Jan 2025 – Nov 2025)

Global currency and travel money brand — online team on a multi-tenant, worldwide consumer website serving tens of thousands of monthly users.

• Lead a cross-functional team of 5 engineers, 1 product owner and 1 UI/UX designer building a multi-tenant global consumer website on Next.js, React, TypeScript and AWS.
• Promoted from Senior to Lead Software Engineer inside ten months on the strength of website re-platform delivery and visible cross-team work.
• Drive architectural standards across the wider engineering organisation as a member of Travelex's global architecture group.
• Architected and shipped the replacement of legacy in-store media display screens across 850 Travelex stores globally — retired an aging on-prem stack with a modern React-based content solution.
• Orchestrating a gradual, monitored rollout of the new website on AWS — sections shipped behind feature flags with observability tied to clear performance baselines.
• Led the migration of the team's observability stack from Datadog to a self-hosted Grafana + Prometheus setup, cutting third-party monitoring cost.
• Embedded GitHub Copilot and Claude Code into the team's day-to-day delivery workflow and runs regular internal workshops on AI-assisted, spec-driven development.

Technologies: Next.js, React, TypeScript, AWS, Sanity, Grafana, Prometheus, Feature flags, GitHub Copilot, Claude Code.

Tech Lead, Lick

Aug 2021 – Nov 2024 · London

Promoted internally to Tech Lead in 2023

D2C paint and decor brand — owned the e-commerce platform and B&Q in-store experience end-to-end.

• Architected and shipped B&Q's first-ever digital experience kiosk screens to 110 stores — built on Next.js and PWA with React on the front end and Node.js on the back.
• Designed and shipped containerised micro-services on Node.js, Docker and AWS ECS for drop-ship ordering between Screwfix and Lick's internal fulfilment/finance systems, instrumented end-to-end with Datadog and CloudWatch.
• Owned the D2C and PRO ordering stack — maintained 99%+ uptime throughout the Tech Lead tenure, serving thousands of MAU and hundreds of orders per month.
• Created Lick's component library from scratch using an atomic-design approach with Tailwind CSS, React and Storybook.
• Delivered Lick's D2C e-commerce site on Shopify's headless CMS, wired into Next.js, React, Node.js and Hygraph.
• Led 3 engineers (2 juniors, 1 senior) — 1-2-1s, mentoring, growth conversations and performance reviews.

Technologies: Next.js, React, TypeScript, Node.js, Docker, AWS ECS, Tailwind CSS, Storybook, Shopify, Hygraph, CircleCI, Datadog, Snyk, Rudderstack.

Senior Software Engineer, Gousto

Jun 2020 – Aug 2021 · London

UK recipe-box business serving millions of meals per week.

• Led the replatforming of recipe ratings as Delivery/Epic Lead — coordinated across squads, authored technical design documents, and shipped an event-driven system on TypeScript and Node.js at scale.
• Built an internal experimentation platform for A/B tests and gradual feature rollouts on TypeScript, AWS Lambda and DynamoDB via the Serverless Framework.
• Integrated the core menu service with a new recommendations engine — squad-wide test plans, staged rollout, and live performance monitoring.
• Migrated legacy services to TypeScript, raising long-term maintainability and reducing classes of runtime errors.

Technologies: TypeScript, Node.js, AWS Lambda, DynamoDB, Serverless Framework, React.

Full Stack Engineer, Lyvly

Jan 2020 – May 2020 · London

Co-living startup — customer-portal work and third-party integration glue.

• Introduced integration testing across React front-end projects.
• Automated and integrated third-party APIs to replace manual operational processes.

Technologies: React, Node.js, TypeScript.

Senior Front End Developer, Yoti

Oct 2018 – Dec 2019 · London

Digital identity platform — security-sensitive customer-facing SDK work.

• Led the rebuild of Yoti's Web SDK (JavaScript/TypeScript) so customers could embed identity services natively within their own domain — a security-sensitive integration handling identity data.
• Co-established Yoti's React design system with designers and engineers, accelerating delivery and improving brand consistency.

Technologies: JavaScript, TypeScript, React, Node.js.

Senior Software Engineer, Arcadia Group

Sept 2017 – Oct 2018 · London

High-street fashion group (Topshop, Topman, Dorothy Perkins and others) — multi-brand e-commerce engineering.

• Led the rebuild of Arcadia's multi-brand CMS (JavaScript, Node.js) for seamless integration with the primary e-commerce platform, materially improving content delivery times across each brand.
• Introduced and enforced coding standards to keep a multi-brand codebase maintainable and extensible.

Technologies: JavaScript, Node.js, React.

Front End Developer, Vitamin London

Sept 2014 – Sept 2017 · London

Boutique digital agency — multi-client e-commerce and consumer mobile work.

• Designed and built multiple client-facing e-commerce sites on Shopify, React and Redux.
• Designed, built and released a "pay as you gym" cross-platform app for iOS and Android.

Technologies: React, Redux, JavaScript, Shopify.

Podback

UK-wide coffee pod recycling service backed by Nespresso, NESCAFE Dolce Gusto and Tassimo — consumers find their nearest drop-off via a postcode lookup.

• Built the entire frontend from a set of designs and wired it up to a headless CMS and API.
• Featured in the national news at launch; today serves a highly active consumer user base across the UK.

Technologies: React, Next.js, Headless CMS.

Eversys

Brochure site showcasing Eversys's premium espresso machines.

• Designed and built a brochure-style marketing site showcasing the machines.
• Built on React and Next.js with Framer Motion powering the animations.

Technologies: React, Next.js, Framer Motion.