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Fullstack developer with 7+ years’ experience building and maintaining modern web applications for consultancies and multi-tenant B2B startups, using .NET Core and React. I enjoy greenfield-heavy work delivering complex features end-to-end—from stakeholder requirements through to production—especially in high-autonomy environments. I specialise in UI/UX modernisation, production-grade Azure OpenAI integrations, and robust API integrations (e.g., Microsoft 365, payments, and KYC/ID verification). I also have hands-on experience with AI-assisted development tools (Cursor/Claude/Copilot) to improve delivery speed and quality.…Fullstack developer with 7+ years’ experience building and maintaining modern web applications for consultancies and multi-tenant B2B startups, using .NET Core and React. I enjoy greenfield-heavy work delivering complex features end-to-end—from stakeholder requirements through to production—especially in high-autonomy environments. I specialise in UI/UX modernisation, production-grade Azure OpenAI integrations, and robust API integrations (e.g., Microsoft 365, payments, and KYC/ID verification). I also have hands-on experience with AI-assisted development tools (Cursor/Claude/Copilot) to improve delivery speed and quality.

Peter Cox

Full Stack Developer, Web Developer, Back-End Developer, +2

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Fullstack developer with 7+ years’ experience building and maintaining modern web applications for consultancies and multi-tenant B2B startups, using .NET Core and React. I enjoy greenfield-heavy work delivering complex features end-to-end—from stakeholder requirements through to production—especially in high-autonomy environments. I specialise in UI/UX modernisation, production-grade Azure OpenAI integrations, and robust API integrations (e.g., Microsoft 365, payments, and KYC/ID verification). I also have hands-on experience with AI-assisted development tools (Cursor/Claude/Copilot) to improve delivery speed and quality.…Fullstack developer with 7+ years’ experience building and maintaining modern web applications for consultancies and multi-tenant B2B startups, using .NET Core and React. I enjoy greenfield-heavy work delivering complex features end-to-end—from stakeholder requirements through to production—especially in high-autonomy environments. I specialise in UI/UX modernisation, production-grade Azure OpenAI integrations, and robust API integrations (e.g., Microsoft 365, payments, and KYC/ID verification). I also have hands-on experience with AI-assisted development tools (Cursor/Claude/Copilot) to improve delivery speed and quality.

Available to hire

Fullstack developer with 7+ years’ experience building and maintaining modern web applications for consultancies and multi-tenant B2B startups, using .NET Core and React. I enjoy greenfield-heavy work delivering complex features end-to-end—from stakeholder requirements through to production—especially in high-autonomy environments.

I specialise in UI/UX modernisation, production-grade Azure OpenAI integrations, and robust API integrations (e.g., Microsoft 365, payments, and KYC/ID verification). I also have hands-on experience with AI-assisted development tools (Cursor/Claude/Copilot) to improve delivery speed and quality.

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Work Experience

Senior Fullstack .NET React Developer at SideQuest

January 1, 2026 - Present

Built and delivered a fullstack job search platform end-to-end, including backend, frontend, UI, AI integrations, and infrastructure. Implemented an automated pipeline for each job listing: collection via client-side Chrome extension, AI-driven screening to extract tech stack and match against user preferences, and AI evaluation to summarise jobs into Company, Remote requirements, and Tech Stack. The system is a .NET Core modular monolith with React/TypeScript frontend and PostgreSQL (EF Core), hosted on Azure App Service. Used Azure OpenAI services and Document Intelligence, applying DDD and CQRS/MediatR on the backend. Implemented an asynchronous transactional outbox pattern for long-running workflows (e.g., agentic workflows) and email delivery.

Senior Full-stack Engineer at CoxCode

November 1, 2025 - Present

Build and take software products from idea to production, including AnyRoad, TLDA and CleanIn. Design full-stack systems with .NET, React, TypeScript, PostgreSQL and Azure, using asynchronous messaging, Microsoft Graph, document extraction and Azure OpenAI where they add practical value.

Senior Fullstack .NET React Developer at Leo RegTech

July 1, 2023 - November 1, 2025

Delivered high-impact features and products end-to-end for a multi-tenant RegTech platform supporting compliance professionals in financial services. Worked across the .NET Core and React stack, hosted on Azure infrastructure. Built and integrated third-party services for automated Background Checks and ID Verifications (KYC), collaborating with vendors to backfill missing functionality and replace manual processes with API-driven automation. Developed an AI Policy Writer using FCA Handbook vectorised content with RAG to generate tailored Microsoft Word policy documents. Rewrote an underperforming compliance training implementation into a fixed SQL schema and new paginated/filterable/sortable API, including migration of existing customer data. Also developed white-labelling, improved shared UI components, promoted AI tooling usage, and modernised React libraries (e.g., TanStack Query and React Hook Forms).

Senior Developer at Leo RegTech

July 1, 2023 - November 1, 2025

Delivered KYC integrations, an AI Policy Writer, an online-training rewrite, white-labelling and broad UI improvements for a multi-tenant B2B RegTech platform. Worked with .NET Core, React, Azure, SQL, vector search, RAG, Azure OpenAI and Microsoft Word.

.NET React Developer at WARC

January 1, 2023 - June 1, 2023

Migrated legacy ASP.NET pages to .NET Core and React and implemented login and registration screens for a B2B SaaS platform serving marketing and advertising professionals. Worked with ASP.NET Framework, .NET Core, React and GitHub Copilot.

Microsoft 365 Developer at ContentFormula

June 1, 2021 - January 1, 2023

Provided Microsoft 365 development for public sector and private blue-chip clients, delivering Teams/SharePoint and fullstack solutions. Maintained an internal messaging system for 10,000+ users in collaboration with offshore contractors (NodeJS, GraphQL, React). Built multiple React frontends integrated into SharePoint and Teams using SPFx under tight time constraints. Attended client meetings for demos and acted as a technical bridge between non-technical project managers and offshore contractors.

Microsoft 365 Developer at Content Formula

June 1, 2021 - January 1, 2023

Built Teams and SharePoint frontends, maintained enterprise messaging software for more than 10,000 users and supported client delivery for public-sector and private blue-chip clients. Worked with Node.js, GraphQL, React, SharePoint, Teams and SPFx.

.NET React Developer at Mott MacDonald

January 1, 2020 - June 1, 2021

Built a licensing-cost application and a People Directory web part for engineers and scientists at a global scientific and engineering consultancy. Worked with .NET Framework, React, Microsoft Teams and SharePoint.