# Patryk Kotarski Patryk Kotarski is a remote worker on Himalayas, Senior Software Engineer – AI at Groupon, based in Italy. Source: https://himalayas.app/@patrykkotarski ```text Senior full-stack engineer: TypeScript, Ruby on Rails and AI developer tooling. 11 years. Remote from Italy (CET). ``` | Detail | Value | | --- | --- | | Availability | Looking for a job | | Location | Italy | | Authorized to work in | Italy | | Salary expectations | 80k+ EUR | | Job categories | Software Engineer | | Skills | AI Developer Tooling, Backend Development, Fullstack Development, Distributed Systems, Search Systems, Telemetry, SSO, SCIM, OAuth, MCP, TypeScript, JavaScript, Ruby, SQL, React | | LinkedIn | https://linkedin.com/in/patrykkotarski | | GitHub | https://github.com/patrykk21 | ## What I'm looking for ```text A senior full-stack or backend role, fully remote from Italy, at a well-known product company. My strongest stack is TypeScript, Node.js, React and Next.js, Ruby on Rails and PostgreSQL, and for the last year I’ve built AI developer tooling: agent pipelines, MCP servers and LLM features in production. I prefer a B2B contract through my own company. A 4-day week is a big plus. ``` ## About ```text At Groupon, I built a pipeline that turns Jira tickets into open pull requests using Claude Code. It shipped 18 PRs in its first week, and my manager asked for it to become a company-wide service. I also designed the pipeline’s telemetry backend and built an MCP server exposing engineering-metrics tools to AI assistants. For Groupon’s move to its in-house Vespa search engine, I owned the homepage and built the Next.js data layer for its carousels. At tl;dv, I led the SSO and SCIM integration and redesigned calendar access by decoupling tokens. During critical incidents, I reduced the meeting error rate from around 15% to under 1%. At iubenda, I designed and built a fault-tolerant consent store for customers’ websites, handling around a thousand requests a second with no data loss. I’ve also worked across TypeScript, Ruby on Rails, backend systems, and AI developer tooling. ``` ## Experience ### Senior Software Engineer – AI [Groupon](https://himalayas.app/companies/groupon). Aug 2025 - Nov 2026 ```text Built AI developer tooling, including a pipeline that turns Jira tickets into pull requests using Claude Code: 31 engineers ran it 647 times, and my manager asked for it to become a company-wide service. Owned the homepage in the migration to an in-house Vespa search stack, built an MCP server exposing 236 tools to AI assistants, and designed telemetry and usage-reporting systems. ``` Skills: TypeScript, Claude-Code, MCP, OAuth, Next.js, Vespa, PostgreSQL, Docker ### Senior Software Engineer tl;dv. Jan 2025 - May 2025 ```text Led SSO and SCIM integration, redesigned calendar access, and reduced meeting error rates from ~15% to under 1% during critical incidents. Improved bot infrastructure for reliable meeting recording. ``` Skills: NodeJS, TypeScript, React, PostgreSQL, MongoDB, Elasticsearch, Kubernetes, SSO, SCIM ### Senior Back End Engineer [Toptal](https://himalayas.app/companies/toptal). Sep 2022 - Oct 2024 ```text Developed a marketing prioritization tool that improved SEO rankings and revenue impact. Improved marketing analytics pipelines with BigQuery and GraphQL, and used GPT-based tools to streamline campaign workflows. ``` Skills: BigQuery, GraphQL, GPT, Marketing-Analytics, SEO ### Software Engineer [iubenda](https://himalayas.app/companies/iubenda). May 2018 - Sep 2022 ```text Led the consent store from start to finish: a Ruby application recording the privacy consents given on customers' websites worldwide, around a thousand requests a second with no data loss, searchable through Elasticsearch, with copies in EU regions for GDPR. Moved it from Chef to Kubernetes and from DynamoDB to MongoDB to Elasticsearch. Also led the internal billing platform. ``` Skills: PostgreSQL, Elasticsearch, Docker, Sentry, Datadog, GDPR, Distributed-Systems, Ruby-on-Rails, Kubernetes, MongoDB ### Software Engineer Binary System. Jan 2017 - May 2018 ```text Built backend and frontend components for an application managing railway undertakings, using PostgreSQL and RabbitMQ. ``` Skills: PostgreSQL, RabbitMQ, Backend-Development, Frontend-Development ### Junior Software Engineer TravelMesh. Nov 2015 - May 2016 ```text Promoted to project lead within two months. Delivered features including advanced filters and cancellation policies, and handled deployments and rollbacks across environments. ``` Skills: Deployment, Rollback, Feature-Development ## Education ### Università degli Studi di Parma Information Engineering, Information Engineering ```text Completed one year of Information Engineering studies at the University of Parma. ``` ## Tech stack - Vespa - DigitalOcean - Kubernetes - Helm - MySQL - PostgreSQL - MongoDB - Sentry - Node.js - Ruby on Rails - Next.js - React - Vue.js - JavaScript - Ruby - RabbitMQ - Datadog - GraphQL - gRPC - Elasticsearch - Chef - TypeScript - sso - Docker - SQL - LiteLLM - Langfuse - Vercel AI SDK - N8N - Claude Code - Claude API To contact Patryk, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire). ## People also viewed - [Konstantin Tarkus](https://himalayas.app/@konstantintarkus): Principal Full stack Engineer, Kriasoft - [Francesco Mollica](https://himalayas.app/@francescomollica): Senior Web Analyst, BitBang - [prabhavit User](https://himalayas.app/@prabhavituser): Lead Developer, FlowSpace.co - [Marco Manto](https://himalayas.app/@marcomanto): Frontend Engineer (Full Stack), Discerns AI - [Muhammad Nouman Rana](https://himalayas.app/@muhammadnoumanrana): Senior Full Stack Engineer, Authentica Group - [Regi Voda](https://himalayas.app/@regivoda): Full Stack Developer, Freelance / Independent - [Franco Rodrigo](https://himalayas.app/@francorodrigo): AI Solutions Engineer | Research Platforms, Kleidos Biotech - [Viacheslav Petrenko](https://himalayas.app/@viacheslavpetrenko): CTO / Software Architect, LITSLink - [riccardo squarcialupi](https://himalayas.app/@riccardosquarcialupi): Software Engineer, Goreply - [Stefano Leone](https://himalayas.app/@stefanoleone): Software Engineer & Tech Lead, BizAway S.r.l.