Linus Thyr Sellin
Senior Fullstack Developer
Senior Fullstack Developer
Kumpan Sweden AB
2025.3 – Ongoing
Linus is a full-stack developer with broad knowledge in product and software development. He has designed, developed and deployed many different types of platforms from scratch, ranging from large microservice backends and streaming plattforms to membership apps and crowdfunding websites. He holds several patents in audio and streaming technology and builds games in his spare time. His main focus is on Go, Node / Typescript, React and React Native.
Tech: Node.js, JavaScript, TypeScript, Go, React, React Native, NestJS, Next.JS, SQL, MongoDB, DynamoDB, Google Cloud, Docker, Kubernetes, AWS, Google BigQuery, RabbitMQ, Nats, Redis, Prometheus, Figma
Senior Fullstack Developer
Audio Equity
2024.6 – 2025.3
Designed, built and deployed a B2B2C platform to accelerate payments and advances for composers and artists in the music industry. The platform is built in Go and Typescript with React and React Native for the client applications. The system is deployed in Google Cloud using Kubernetes and Cloud Run.
Tech: Node.js, JavaScript, TypeScript, Go, React, SQL, MongoDB, Google Cloud, Docker, Kubernetes, Stripe, Digital Ocean, Figma
IT Architect & Lead Fullstack Developer
Utopia Music AG
2018.9 – 2024.6
Built and maintained the company's Micro Service Saas platform, its APIs and client libraries, and supported other development teams in their product development on top of the system. Conducted technical recruitment, produced interview code tests, and acted as a mentor as the company scaled from 20 to over 1200 employees. In addition, he also founded and worked with the RnD team where the focus was on building software for audio recognition, Machine Learning models, and digital licensing solutions.
Tech: Node.js, JavaScript, TypeScript, Go, React, React Native, SQL, MongoDB, Google Cloud, Docker, Kubernetes, AWS, Terraform, Google BigQuery, Data lake, RabbitMQ, Nats, Redis, Prometheus, Figma
IT Architect & Lead Fullstack Developer
ISPY AB
2016.7 – 2018.9
As a consultant, built a number of different platforms and solutions for clients. Some examples are the crowdfunding platform TargetAid, the streaming platform Staccs and the KYC and AML product GRC Watch. Also acted as project manager and scrum master.
Tech: Node.js, JavaScript, TypeScript, Go, React, React Native, SQL, MongoDB, Google Cloud, Docker, AWS, RabbitMQ, Redis, Stripe, Graphite, Grafana, Sketch
Lead Frontend Developer
Derivco
2014.1 – 2016.7
Managed Betway.com's rebranding of their Livebetting platform and rewrote the company's back office from Google Clojure to React. As lead, Linus also managed the company's Frontend team in their agile work.
Tech: Node.js, JavaScript, TypeScript, Go, React, SQL, Google Cloud, Docker, AWS, Redis, Google Clojure, PHP, Graphite, Grafana, Photoshop

Education
Uppsala University 2015 – 2016
Södertörn University 2012 – 2013