the m9sh.
— m9sh / About

Marcin
Urbanski.

Engineering lead. 11+ years shipping production distributed systems that serve hundreds of millions of users daily. TypeScript, Go, Ruby, and a decade of AWS underneath it all.

Remote from San Francisco · Open to contracts, fractional, and full-time lead roles.

11+

Years shipping prod

100M+

Daily users reached

7

AWS migrations led

50+

Repos on my CI/CD

/ 01

Who I am

I build production systems end-to-end — the kind that serve millions of users, move real money, and can't afford to go down. For the last five years that's meant designing and shipping the platforms that ingest, standardize, and expose sports odds data across Sportradar's US and European organizations.

Before that I led mobile and backend teams in Norway, shipped Android platform features at Samsung R&D, and published two mobile-security papers that picked up 150+ citations.

Right now I'm focused on what AI agents can and can't do for real software work. The writing on this site is a hobby — building systems is the actual job.

/ 02

Experience

/01

Sportradar.

Engineering lead · Distributed systems

Current · 5+ years

Apr 2020 — Present

San Francisco · Remote

Global leader in sports data distribution. Data served to hundreds of millions of users daily.

  • Designed and built Magic Odds. Sportradar's core platform for ingesting, standardizing, and exposing odds data from bookmakers (DraftKings, FanDuel, MGM, William Hill, PointsBet). Took it from a Go PoC to a multi-service TypeScript/gRPC production system across six phases. Now processing millions of sport events per year.

  • Architected the next-gen Odds Comparison API. TypeScript and gRPC. Writer/Reader microservices, DynamoDB storage, cross-regional migration support.

  • Led AWS migration of 7 products. ~500 CloudFormation components moved from Kubernetes to ECS Fargate, Lambda, DynamoDB, and S3 — zero downtime. Built reusable Terraform modules.

  • Built internal tooling. React/TypeScript admin tools and a CLI for managing odds data, bookmaker mappings, and AWS sandbox ops. Materially cut cost and ops overhead.

  • Centralized CI/CD and observability. Across 50+ repos. Full stack on Prometheus, Grafana, CloudWatch, with real-time Slack alerting.

  • Bridged two orgs. Sole engineer contributing across Sportradar Europe and US — bridged architectural, operational, and domain knowledge between regions.

  • Mentored 5+ engineers. Including onboarding senior and staff engineers. Led AI enablement workshops and technical knowledge-sharing sessions.

  • Recognition. 1× Outstanding Performance · 4× High Performance awards.

TypeScript Ruby Go React gRPC GraphQL AWS DynamoDB Serverless Terraform
/02

Mojob.

Technical Leader

1.5 years

Sep 2018 — Apr 2020

Trondheim · Norway

Mobile-first, AI-based recruitment platform and job-seeker app.

  • Built a team of 5 engineers. Hired, managed, and mentored. Established agile processes and engineering culture from scratch.

  • Led end-to-end architecture. Cross-platform Flutter mobile app, TypeScript/Vue frontend, Python/Django backend with REST APIs.

  • Ran DevOps. Kubernetes clusters and AWS (Lambda, RDS). Improved CI/CD and significantly reduced dev costs.

TypeScript Vue Flutter Python Django Kubernetes AWS
/03

Myworkout.

Software Engineer → Mobile Tech Leader

2.5 years

Mar 2016 — Oct 2018

Trondheim · Norway

Scientifically validated activity-tracking app used in fitness, wellness, and medical research.

  • Led the mobile team. Owned architecture, delivery, and quality for the Myworkout GO app across Android and iOS.

  • Built native apps on both platforms. Android (Kotlin/Java) and iOS (Swift) with HealthKit, GPS, motion tracking, and background services.

  • Managed full release lifecycle. Testing, App Store and Google Play deployments, cross-platform feature parity.

Android Kotlin iOS Swift Obj-C Sensors
/04

NTNU.

Software Engineer Trainee

7 months

Aug 2015 — Mar 2016

Trondheim · Norway

Research trainee supporting academic projects in mobile systems and security.

  • Research tooling. Built data-collection tools and prototypes for scientific studies in mobile security and data analysis, collaborating directly with researchers and PhD students.

Android Research Security
/05

Samsung R&D Institute.

Junior Software Engineer

1+ year

Jun 2014 — Jul 2015

Warsaw · Poland

Mobile platform features inside Samsung's Android ecosystem.

  • Platform-level Android work. Performance-oriented application and system-level development in a large-scale multinational engineering environment.

Android Java Platform
/ 03

What I work on

Distributed systems

High-scale TypeScript, Go, Ruby services. gRPC, GraphQL, event-driven pipelines.

AWS infrastructure

Lambda, ECS Fargate, DynamoDB, Step Functions. Terraform and CloudFormation at scale.

Data pipelines

Ingest, standardize, expose. Real-time feeds serving hundreds of millions of users.

AI & agents

Agentic engineering, tool use, MCP servers, model-in-the-loop workflows.

Platform & DX

CI/CD for 50+ repos, observability, internal tools, CLIs that cut ops overhead.

Audits & rescues

Picking up legacy systems and putting them back on track without downtime.

/ 04

Stack

Languages

TypeScript · Go · Ruby · Python · Kotlin · Swift

Backend

Node.js · Rails · Django · gRPC · GraphQL · REST

Frontend

React (Vite) · Vue · Hotwire · Tailwind · Flutter

Data

PostgreSQL · MySQL · DynamoDB · Redis · Elasticsearch

Messaging

Kafka · AMQP · ActiveMQ · Step Functions

Cloud

AWS — Lambda, ECS, DynamoDB, RDS, S3, Cognito, API GW

Infra

Terraform · CloudFormation · Docker · Kubernetes

Observability

Prometheus · Grafana · CloudWatch · New Relic · tracing

AI

Claude · MCP · OpenAI · agent loops · evals

Leadership

Team building · hiring · mentoring · cross-regional collab

/ 05

Education & research

Degree

Warsaw University of Technology

2010 — 2015 · Warsaw, Poland

BEng in Computer Science, Software Engineering minor. Poland's #1 technical university.

GPA 4.26 / 5.0 Thesis 5.0 / 5.0 Defence 5.0 / 5.0

Publications

2 peer-reviewed papers.

150+ citations combined

  • Seeing the Unseen: Revealing Mobile Malware Hidden Communications via Energy Consumption and Artificial Intelligence

    IEEE Transactions on Information Forensics and Security · 2015 · 135+ citations

  • Detecting Local Covert Channels Using Process Activity Correlation on Android Smartphones

    Computer Systems Science and Engineering · 2016 · 19 citations

/ 06

Get in touch

Need an engineering lead who actually ships?

Contract, fractional, or full-time. Greenfield builds, rescues, and AI agent integrations.

Hire me → Full-time roles →