Savva Lambin
Freelance Product Engineer
Services
MVP Development
Product Engineering
Research Tools
From idea to a working product that can be tested with real users.
I build MVPs that are ready to validate real user needs, attract early adopters, and support iteration. I focus on shipping the right features fast and iterating based on real user feedback, rather than over-engineering.
Example work includes:
- Translating product ideas into a clear technical plan
- Building full-stack MVPs using React, TypeScript, and Python
- Rapid iteration based on user feedback
- Deploying and maintaining early production systems
Best for early-stage startups and solo founders who need to turn an idea into something real.
Pricing
- £500 - £700 per day
- Fixed-scope MVP projects available
Embedded product engineering to ship features, tools, and infrastructure with minimal overhead.
I work as a flexible engineer who can pick up existing codebases, collaborate with designers and PMs, and deliver features that improve user experience and developer workflows.
Example work includes:
- Frontend development (React, Next.js, Vite)
- Internal tools, dashboards, and developer tooling
- Improving usability, performance, and maintainability
- Supporting product launches and high-impact features
Ideal for small teams that need extra engineering capacity without long onboarding or micromanagement.
Pricing
- £400–£600 per day
- Part-time retainers available
Explore, organize, and make sense of complex information.
I design and develop research-focused tools such as knowledge graphs, interactive visualizations, and data pipelines that turn large collections of papers, documents, or datasets into something searchable and explorable.
Example work includes:
- Data pipelines (Python) for collecting, cleaning, and structuring research data
- Embedding, clustering, and metadata enrichment for discovery and analysis
- Interactive web interfaces (React) for exploring relationships and trends
- CLI tools and internal dashboards for researchers and engineers
Ideal for research teams, AI labs, and startups working with complex or unstructured data.
Pricing
- £450–£650 per day
- Fixed-scope research tooling projects available
Work
A powerful tool for customer data management
OSS Research Tool for AI Safety
Navigate your ChatGPT prompts with ease
Front-End Developer
Website Development
- NextJS + Directus CMS App
- Extended and maintained a custom design system by adding reusable UI components
- Used static site generation (SSG) for fast-loading, SEO-optimized content.
- Translated Figma designs into pixel-perfect UI implementations
- Built responsive layouts to ensure optimal performance across devices
- Integrated a community forum utilising Firebase products (Authentication and Firestore)
App Development
- React + Ruby on Rails App
- Redesigned and updated UI components to enhance user experience and integrate new API data.
- Suggested flexible component variants during PRs, resulting in more reusable and maintainable UI patterns.
Full-Stack Developer
An open source web app which connects thousands of research papers on AI Safety to produce a knowledge graph.
MVP Design and Development for data pipeline & UI
- Python pipeline: Harvest data from arXiv API, SQLite storage, Specter2 embeddings, RegEx and centroid filtering stages, clustering, export to JSON as graph and summaries
- CLI options for embedding (CPU vs GPU), Clustering, Filtering & Export stages
- React Vite SPA using react-force-graph-2d package for graph visualisation
- Lazy load paper summaries per node
- Search through papers via keywords
- Improved graph visualisation using D3 and pixi.js
Frontend Developer
Navigate your ChatGPT prompts with ease. A side panel that lists your conversation prompts so you can quickly jump, copy, or edit without scrolling.
Design and Development
- Built with Preact, TypeScript, and Vite on the Manifest V3 framework. Implements prompt-history tracking, keyboard navigation, and code/branch detection via custom DOM observation and Chrome Extension APIs.
- Improved ChatGPT usability and workflow efficiency by enabling instant navigation across long conversations and surfacing hidden prompt data.
Skills
design
user experience
- Application Design
- Design Systems
- Rapid Prototyping and Ideation
design management
- Art Direction
front end
html & css
- Mobile-first
- Responsive design
- Performance Optimisation
- SCSS
- Radix UI
javascript
- Vanilla JavaScript
- TypeScript
- React, Redux & Toolkit
- NextJS
- 11ty
back end
Languages & Runtimes
- NodeJS
- Python
Frameworks & APIs
- Express
- FastAPI
Databases
- MongoDB
- SQL
- Redis
- Firestore
CMS & BaaS
- Firebase
- Directus
Deployment
- AWS
- DigitalOcean
- Docker
