Ruby on Rails developer since 2018. Backend work, and the AWS and DevOps that keep it running.
Marek Stocki has written software since 2018, mostly Ruby on Rails, with a long streak of DevOps on AWS — Kubernetes, ECS and lately Kamal. He came to code from civil engineering.
He likes to learn new things, keeps an open mind and says what he thinks early. Outside of work he runs and explores AI.
Client work since 2018, plus one of my own
2026 – now
My own pet project, a city game in Białystok where you walk to the bear sculptures, check in by GPS and collect them.
My part
Everything, from the map to the deploy.
Ruby on Rails · React · TypeScript · PostgreSQL · PostGIS · Kamal
2022 – now
A Paris platform for in-person, hybrid and online events: event websites, registration, ticketing, badges and on-site check-in.
My part
Over 4,000 commits since 2022, mostly backend. AI matchmaking between attendees, Apple and Google Wallet passes, data sync across multi-event hubs, the Liquid engine behind event websites and emails, PDF badge rendering, and the upgrade to Rails 8.1 and Ruby 4.
Ruby on Rails · Mongoid · GraphQL · Liquid · OpenAI · React · Resque · RSpec · AWS · Kubernetes
2022
London’s Japanese grocer since 1976, with an online shop delivering across the UK.
My part
Moved four applications from EngineYard to AWS ECS and cut the hosting bill by about 70%.
AWS · ECS · Docker
2021
A private platform for families and communities to share and stay in touch.
My part
Joined to help out, and a month later was the only developer on the project, responsible for the whole backend: the API, payments and the infrastructure behind it.
Ruby on Rails · RSpec · Rswag · Stripe · CanCanCan · Heroku · Docker
2021
Send unwanted clothes by courier or InPost locker, and their value goes to a charity campaign you choose.
My part
Took over a barely working app: nearly every page was one big N+1, and a 16 GB instance kept going down. After the queries were fixed and the app moved to AWS ECS, it runs on 2 GB at about 30% memory.
AWS · ECS · Docker
2019 – 2021
A New York store for digitally native brands, on Bond Street and later in Brooklyn. Merchants selling on Spree, Shopify, WooCommerce and Square shared one checkout.
My part
Started as one of four backend developers and, for the last year, was the only one. The Kubernetes architecture, the whole API and the admin panel, merchant store integrations, in-store and online payments, invoices and payouts, in-store camera analytics.
Ruby on Rails · GraphQL · Trailblazer · Spree · Shopify · Stripe · AWS · Kubernetes
No longer operating
2018 – 2019
Nauczycielska Agencja Ubezpieczeniowa, the insurance agency of Polish teachers and school staff: group life insurance run with PZU, loans and the Klub NAU loyalty programme.
My part
Maintenance, new features, refactoring large pieces of business logic.
Ruby on Rails · PostgreSQL · Sidekiq · Redis · Pundit · Capistrano
2018
A promotional site for Bloody gaming gear. Players linked their League of Legends and CS:GO accounts, earned points for in-game feats like a pentakill, and traded them for Bloody mice and headsets.
My part
Contest architecture, onsite notifications, backend and frontend.
Ruby on Rails · PostgreSQL · jQuery · Pundit · Capistrano
The campaign has ended and the site is offline
Poland, remote
GitHub