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Kristian Coulson

@kristiancoulson

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Lead Developer at PrettyLittleThing who led multi-brand e-commerce platforms serving millions of users.

United Kingdom

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What I'm looking for

I'm available for contract, freelance and consultancy roles.

At PrettyLittleThing, I was Lead Developer on a multi-brand e-commerce platform serving millions of users. I led development of a shared Next.js platform with custom brand themes and helped deliver the migration from Magento 1 to a Next.js frontend and Node.js API gateway.

At Langadoo, I designed, built and operate an AI-powered language learning SaaS platform, including video learning tools and Redis-backed processing pipelines. Earlier, at Frog Education, I developed a teacher marking application and contributed frontend features to a learning management platform.

Experience

Work history, roles, and key accomplishments

Current

Founder & Developer

Current

Langadoo

Jan 2024 - Present (2 years 10 months)

Designed, built, and operated a full-stack AI-powered language learning SaaS platform. Responsible for architecture, development, deployment, and operations.

TanStack Start React TypeScript PostgreSQL Redis BullMQ OpenAI Whisper Docker

Lead Developer

PrettyLittleThing

Feb 2021 - Jun 2026 (5 years 4 months)

Led development of high-traffic React and Next.js e-commerce applications supporting millions of users. Mentored developers across four teams and defined coding standards and frontend architecture.

Next.js React TypeScript NodeJS Koa AWS Tailwind Storybook Chromatic React Hook Form Zod Vitest Jest React Testing Library Sentry Dynatrace

Web Developer

Frog Education

May 2018 - Jul 2020 (2 years 2 months)

Worked on a large-scale learning management platform using PHP, MySQL, JavaScript, and jQuery. Led development of a teacher marking application and contributed to a corporate learning platform transformation.