Miloš Petrović
Software Engineer at Fenris Creations (CCP Games)
Full-stack engineer with 9+ years across web, mobile and LLM agents. Today I build internal tools and services for EVE Online at CCP Games, from the data model to the game-server code that reads the result.
Now
I build internal tools and services for EVE Online. Game teams use them to configure and run parts of the live game, and the game server consumes what they publish.
Python · Django · React · TypeScript · Protobuf · GraphQL · three.js · AWS · Terraform
Full-stack work on the company’s mobile platform: an Expo / React Native app and a tRPC + Express backend in one TypeScript monorepo.
React Native · Expo · TypeScript · tRPC · Prisma · PostgreSQL · Claude API
Patient-facing web apps for a digital health platform used by patients and clinicians.
React · TypeScript · GraphQL · TanStack Query · Cypress · Java
Led development of a Laravel and Vue.js progressive web app used by a sales team of more than 100 people, and built its NativeScript mobile app for their managers.
Laravel · Vue.js · PHP · NativeScript · SQL
My own small agency, run next to my jobs: websites and apps for clients in Serbia, from design to development and hosting.
WordPress · Shopify · Laravel · React Native
Earlier
Education
Certificates
I build complex things as simply as possible. If a feature needs a manual, the design is wrong. If code can be deleted, it should be.
Data model, API contract, UI, and the server code that consumes the result. One owner means fewer gaps between the layers.
I trained as a life coach and studied how people and teams work. It shows in code reviews, in planning, and in how I handle a disagreement.
I use LLMs every day, in the products I build and in how I build them. I test agents with evals, so a prompt change is a measured change, not a guess.
I am self-taught. I started with WordPress sites for clients in Serbia, ran a small agency, and led a team building a progressive web app and its mobile apps.
In 2022 I moved to Iceland. I spent two and a half years on a digital health platform used by patients and clinicians, then joined a startup as a full-stack mobile developer, where I also built its LLM assistant.
Today I own tools end to end at CCP Games, and I study Computer Science at Reykjavík University on the side.
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My own app · 2025
A fitness app that turns workouts into small daily tasks: programs, set-by-set logging, streaks and rewards, Apple Health data, and Fitty, an AI coach that also builds programs from your goals and equipment. I built the app and the backend alone and shipped it to the App Store. It is no longer maintained.
React Native · Expo · tRPC · Prisma · Supabase · OpenAI
Reykjavík University · 2025
An app for what is playing in Icelandic cinemas: showtimes by cinema, filters by rating, time, actor and director, trailers inside the app, and favourites you can reorder and share by link. A course project with one teammate; I wrote most of it.
React Native · Expo Router · TypeScript · TanStack Query · Redux Toolkit
Heima
A multi-tool LLM agent inside a family task-management app. I designed the system prompt, the tool routing and the streaming to React Native, and built an eval harness to measure tool-selection accuracy.
React Native · tRPC · Claude API · Prisma
Voot (Hampiðjan) · 2021 → 2022
A CMS and online ordering system for Voot, an Icelandic marine and industrial supply store owned by Hampiðjan. I built it from scratch: database design, authentication, and an integration with Microsoft Dynamics AX so web orders flow straight into the company’s ERP.
Laravel · Vue.js · SQL · Dynamics AX
Morph · 2019 → 2022
Software for a moving company’s sales team of more than 100 people: leads, claims, inventories, contracts, payments, team chat and video surveys. I led the Laravel and Vue.js progressive web app and built its NativeScript mobile app for managers.
Laravel · Vue.js · NativeScript · SQL
Side project
Software that runs a restaurant in Serbia: waiter tablets, a kitchen display, thermal receipt printing, a back office, and a separate shift planner with a staff check-in tablet.
Laravel · Vue 3 · React
Earlier work from my agency years and side projects, 2018 → 2020.
Side project · 2018 → 2019
A Serbian flight booking engine built with a colleague: Kiwi API search, email alerts when a saved trip’s price changes, and online card payments. Rebuilt from AngularJS to React.
React · AngularJS · PHP
DevLab Agency
Website for a Singidunum University faculty: a custom WordPress theme with two custom search engines for courses and staff.
WordPress · PHP · JavaScript
DevLab Agency
Product site for an Icelandic workwear brand, with a store locator in place of online checkout.
WordPress
My own portal
A regional news portal in East Serbia that I owned and redesigned, with reader-submitted news and a dark mode.
WordPress · Design
Happy to talk about full-stack or tooling work.
milosptr@hotmail.com