Kaspar L. Palgi
Senior Full-Stack Web & Mobile Developer · IoT Specialist · AI Consultant
UK (Elsenham) ⇄ Canarias ⇄ Estonia — digital nomad since 2004.
Profile
Senior full-stack engineer with 25+ years shipping software. I go deep in Svelte / SvelteKit, TypeScript and Node.js, and I’m in my element with anything API - blazing fast with Hasura and GraphQL (I wrote for Packt Publishing a book on it). Cross-platform mobile in Tauri 2. Python or PHP when a job calls for it. Docker for deployment.
On the hardware side I specialise in ESP32 / ESP-IDF, C++ and hands-on product development - from soldering to shipped device. But obviously when more compute needed I go for Raspberry-like computers but I love to keep it simple, small, cheap and low power. Lately I lead teams and businesses into agentic AI and Claude Code, turning it into measurable, secure, bug-free delivery.
I believe in the finest stack and honest engineering - TDD, Agile, relentless code quality - to hand the owners backend, API and admin panel that’s up to 10× faster to build on. Happy to own a project solo or pair with your existing developers.
Experience
Developer, scraper & consultant
Feb 2024 – Aug 2026Renlog · Remote
- Built a SvelteKit/TypeScript/Node desktop app that auto-predicts the user's active project/task by capturing raw system data — window titles, mouse/keyboard activity, call and chat logs.
- Implemented multi-OS data collection in Rust, bridging Rust ↔ TypeScript and Kotlin/Swift on mobile; kept the whole stack lightning-fast and protected the codebase from reverse engineering.
- Set up a local scraping server pulling live data from 29 property-data sources (governmental, public and private) 24/7; built the analysis layer and UI on top.
- Acted as analyst, DevOps, developer, teacher and consultant simultaneously — trained staff and a junior replacement on AI agents and the full system before handover.
Freelance Developer & Analyst
Feb 2016 – Dec 2023CrewNew — Agency of Freelancers · Remote · UK & EU
- Ship production full-stack web apps end-to-end for UK and European clients — SvelteKit, React, TypeScript, Node.js, Hasura/GraphQL, PostgreSQL, Docker.
- Act as developer and software analyst: scoping, architecture, and hands-on delivery, often pair-programming with clients’ in-house teams.
Backend Developer
Aug 2009 – Dec 2015PVCfactory · Estonia
- Long-running backend engagement powering the online ordering and production side of a manufacturing business.
- Built into their warehouse automatic time tracking system from camera/GPS + warehouse management form barcode readers.
Author — “Building GraphQL Backend with Hasura”
May 2022 – Sep 2023Packt Publishing · Remote
- Wrote a full technical book teaching backend and API development with Hasura, GraphQL and PostgreSQL (ISBN 978-1-80461-577-5).
Cloud Backend & Databases Teacher
Mar 2023 – Feb 2024Tallinna Polütehnikum · Tallinn, Estonia
- Taught cloud-services backend, PostgreSQL, GraphQL and Hasura to vocational IT students.
Backend Developer, Analyst & Recruiter
May 2021 – Sep 2022Schoolify Deutschland GmbH · Remote · Germany
- Delivered backend work and requirements analysis, and helped recruit and vet developers for the team.
Co-Founder, Project Manager & Developer
Nov 2018 – Sep 2019Sayv — Sustainable Living · London, UK
- Co-founded a sustainability venture, leading both the product roadmap and the coding.
IT Department Manager
Oct 2006 – Mar 2007Nordic Digital AS · Tartu, Estonia
- Worked on the software and marketing side in the IT department of a company that sold across 7 retail shops.
Founder & IT / Networking Specialist
Feb 1999 – Jun 2004Laboramus OÜ · Estonia
- Founded and ran an IT services firm: management, support, hardware repair, network build-out and marketing.
Selected work
Building GraphQL Backend with Hasura
Author · Packt Publishing, 2023. A complete guide to production-grade GraphQL backends with Hasura, PostgreSQL and authorisation — from schema to deployment.
Education
University of Tartu
1999 – 2003IT
Hugo Treffner Gymnasium
1996 – 1999IT & Physics
Schule Schloss Salem
1997 – 1998International Baccalaureate (IB), IT & Economics