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Hi, I’m Oliver Rennard, a senior software engineer with 10+ years building high-impact backend and full-stack systems across Python and TypeScript ecosystems. I focus on AI-augmented products, cloud architecture, and robust, scalable software. I'm known for fast learning, clear problem solving, and dependable, maintainable code. In my spare time I enjoy mentoring, exploring new ML techniques, and delivering value to users.…Hi, I’m Oliver Rennard, a senior software engineer with 10+ years building high-impact backend and full-stack systems across Python and TypeScript ecosystems. I focus on AI-augmented products, cloud architecture, and robust, scalable software. I'm known for fast learning, clear problem solving, and dependable, maintainable code. In my spare time I enjoy mentoring, exploring new ML techniques, and delivering value to users.

Oliver Rennard

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

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Hi, I’m Oliver Rennard, a senior software engineer with 10+ years building high-impact backend and full-stack systems across Python and TypeScript ecosystems. I focus on AI-augmented products, cloud architecture, and robust, scalable software. I'm known for fast learning, clear problem solving, and dependable, maintainable code. In my spare time I enjoy mentoring, exploring new ML techniques, and delivering value to users.…Hi, I’m Oliver Rennard, a senior software engineer with 10+ years building high-impact backend and full-stack systems across Python and TypeScript ecosystems. I focus on AI-augmented products, cloud architecture, and robust, scalable software. I'm known for fast learning, clear problem solving, and dependable, maintainable code. In my spare time I enjoy mentoring, exploring new ML techniques, and delivering value to users.

Available to hire

Hi, I’m Oliver Rennard, a senior software engineer with 10+ years building high-impact backend and full-stack systems across Python and TypeScript ecosystems. I focus on AI-augmented products, cloud architecture, and robust, scalable software. I’m known for fast learning, clear problem solving, and dependable, maintainable code.

In my spare time I enjoy mentoring, exploring new ML techniques, and delivering value to users.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Senior Software Consultant at Self-Employed

July 1, 2024 - November 25, 2025

Self-employed software consultant delivering Python, JavaScript, TypeScript, LangChain, Pinecone, OpenAI, Next.js, AWS, GCP, Django, Node.js, and Prisma. Built multiple RAG-based applications, led technical strategy for a social media startup, and designed cloud infrastructure for a medical platform in partnership with a university.

Senior Fullstack Engineer at Co-op

July 1, 2024 - July 1, 2024

Designed, built, and maintained a suite of internal tools and platforms, enabling faster engineering work and saving over £100,000 per year. Managed AWS microservices, Kubernetes infrastructure, and mentored junior engineers.

Senior Fullstack Engineer at Recurse AI

September 1, 2020 - September 1, 2020

Led development of a 3D avatar web app integrated with a custom LLM backend. Worked directly with CEO/CTO to define founding product architecture; delivered across Django, React, and Unity, and built a scalable cross-platform MVP.

Python Engineer & Application Developer at Arctic Shores

December 1, 2019 - December 1, 2019

Owned joint initiatives with research and data teams, improved data processing pipelines, automated feature engineering and ETL, and led development of machine learning algorithms (e.g., random forests, neural networks) to win large clients. Liaised with cross-functional teams and documented processes for smooth handovers.

C# Unity / JavaScript Developer at Wren Kitchens

October 1, 2017 - October 1, 2017

Wren Kitchens roles involving Unity app development and JavaScript/React for cross-platform experiences; led VR projects and automated build processes to accelerate releases.

PHP Developer at Wren Kitchens

December 1, 2016 - December 1, 2016

Backend development in PHP and internal tool development; contributed to cross-platform solutions and tooling.