Savva Lambin
Product Engineer
Services
MVP Development
Product Engineering
Technical Consultation
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.
Freelance Pricing
- from £5,000 per 2-week sprint
- Most MVPs take 2–4 sprints depending on scope
- Fixed-scope MVP projects available from £12,000
How projects are scoped
- We start with a short discovery conversation to clarify the problem and desired outcome.
- A lightweight technical plan defines the initial MVP scope and priorities.
- Each sprint begins with a clear list of deliverables.
- Working software is delivered at the end of every sprint.
- Scope can evolve between sprints based on feedback and learning.
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
Freelance Pricing
- from £4,000 per 2-week sprint
- Part-time retainers available
How engagements typically work
- I integrate with your existing workflow (GitHub, Linear, Jira, etc.).
- Work is planned in short delivery cycles or sprints.
- Priority tasks are agreed at the start of each cycle.
- Regular communication keeps progress transparent.
Expert advice on MVP scope, architecture decisions, and product direction.
Technical Consultation
Many projects start with a short consultation to clarify the problem, technical approach, and scope of work.
- Intro call (15–20 minutes) - free. A quick conversation to understand your project and see if I can help.
- Technical consultation (60–90 minutes) - £200. We can review product ideas, architecture, MVP scope, or research tooling strategies.
Consultation sessions often help founders refine their roadmap before starting development.
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.
Freelance Pricing
- Fixed-scope research tooling projects available from £6,000
How projects are scoped
- We begin by clarifying the data sources, research goals, and expected outputs.
- A technical approach is proposed for data processing, analysis, and interfaces.
- Projects are delivered in stages so tools can evolve alongside research needs.
Most projects begin with a short introductory call where we discuss the problem you're trying to solve, the timeline, and whether the engagement is a good fit.
Work
Version Control & Prompt History for ChatGPT
OSS Research Tool for AI Safety
A powerful tool for customer data management
Product Engineer
Navigate your ChatGPT prompts with ease. A side panel that lists your conversation prompts and branches so you can quickly jump, copy, or edit instantly without scrolling.
Outcome
- Improved ChatGPT usability and workflow efficiency by enabling instant navigation and enhancing UX across branched conversations.
- Built with Preact, TypeScript, and Vite on the Manifest V3 framework. Implements prompt-history tracking, keyboard navigation, and branch detection via custom DOM observation and Chrome Extension APIs.
- Privacy-first approach- no personal information leaves the browser
Design and Development
Product Engineer
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
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.
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
