Services

I help businesses build reliable, scalable technical solutions that drive real results through LLM engineering, full-stack development, data engineering, and technical architecture. My expertise spans from harnessing cutting-edge AI and crafting robust applications to transforming raw data into actionable intelligence through powerful pipelines and visualizations.

  • SaaS Applications

    Full-stack SaaS development from idea to production. Including auth, payments, analytics, and automated testing.

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  • LLM Engineering

    Building custom AI solutions and integrating LLMs into existing applications. Specializing in RAG, fine-tuning, and prompt engineering.

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  • React Development

    Modern web applications built with Next.js, TypeScript, and Tailwind. Focus on performance, accessibility, and user experience.

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  • Python Development

    Building scalable backend services, data pipelines, and automation tools. Expert in FastAPI, Django, and async Python.

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  • Data Engineering

    End-to-end data pipeline development, ETL processes, and data warehouse solutions. Expertise in real-time and batch processing.

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  • Web Scraping

    Building reliable and scalable web scrapers with respect for robots.txt. Expert in handling JavaScript-heavy sites and CAPTCHAs.

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What Our Clients Say

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Rhys Fisher
Rhys Fisher
James has been a key measurement partner for a number of years. While running a boutique analytics agency, I would bring Just Understanding Data into a number of growth transformation projects at a time, across a portfolio of B2B SaaS and D2C E-commerce clients. These projects involved solving a diverse set of challenges. Together we worked on bespoke data collection solutions, applying machine learning models to marketing challenges, and surfacing often complex ideas into easy to digest actionables that clients could act on. James is well spoken and handles client communications well. His super power is being able to create a shared understanding around the insights drawn with analytics. Without James, you’ll be leaving growth on the table. 5* recommendation from me.
Jeanne Keith Felipe
Jeanne Keith Felipe
James is a very nice and professional person to do business with. He doesn't mind explaining technical information to give you a clearer picture of how online business works. He has a great work ethic and I'm sure Insight Jar will go far
Shuaib Ahmed
Shuaib Ahmed
James is literally a legend! I asked him to perform a web scraping task that was quite tedious revolving academic abstracts and he literally did it within a week after posting the gig. He also went above and beyond and gave me tips on applying NLP techniques which worked out quite well for my solution the month after. I would highly recommend working with him for any of your data collection needs or if you just need tips/help solving any Data Science issues!

Software & Data Engineering Done Right.

I build software that is easy to use, easy to maintain, and easy to scale.