Martin Jarosinski

Full-Stack Developer — Minneapolis, MN
 martinjarosinski.com
linkedin.com/in/martinjarosinski
martin.jarosinski@gmail.com · (612) 227-4586
Summary
Full-stack Rails engineer with 20+ years of production development experience. Lead developer at a digital agency building custom web applications, mobile apps, and API-driven platforms. Owns features end-to-end — from discovery and architecture through deployment and monitoring. Effective remote collaborator on a fully distributed team. AI-augmented development workflow using Claude Code daily across all phases of delivery.
Experience
2015 – Present Lead Developer
Acts Media Inc. — St. Paul, MN
  • Shipped 20+ Rails web applications and 6–10 React Native mobile apps across diverse clients, managing 3–5 concurrent projects on a team of up to 6 developers
  • Sole developer of an online drivers education platform (A+ Driving School) — built the full product including web app, mobile-responsive UI, video delivery system, and admin area. First state-approved async drivers ed in MN; ~$5M revenue since 2022 launch
  • Integrated third-party APIs including Stripe, Twilio, Google Maps, Shopify, HubSpot, and Blackbaud to extend platform capabilities
  • Managed production infrastructure on DigitalOcean and local datacenter using Docker, Caddy, and Let's Encrypt
  • Led technical direction across multiple concurrent projects as lead developer in a fully remote agency team
  • Established CI/CD pipelines and testing practices using Minitest with TDD approach
  • Leveraged AI-assisted development (Claude Code) daily to accelerate feature delivery, generate test suites, and automate workflows
  • Collaborated directly with clients to translate business needs into technical solutions, managing scope and delivering iteratively
  • Mentored junior developers and led knowledge-sharing initiatives while serving as primary technical contributor
2005 – 2015 E-Learning Developer / Development Lead
Badiyan Inc. — Bloomington, MN
  • Designed and developed award-winning interactive applications for Fortune 500 clients including Ecolab, Medtronic, Patterson, Cargill, Caterpillar, Honeywell, Allina Health, and 3M on a team of 4–6 developers
  • Built mandatory New Employee Orientation applications for Medtronic (~100K employees) and Allina Health (~30K employees)
  • Developed native iOS applications (Objective-C) and cross-platform mobile apps (PhoneGap/Cordova)
  • Built single-page web applications using JavaScript MVC frameworks with backend JSON APIs
  • Led UX design and development for web and native application platforms
  • Presented at 3 consecutive ASTD-TCC conferences on mobile LMS development (2012–2014)
2002 – 2005 E-Commerce Developer
Patchouli Garden — Park Falls, WI
  • Built and operated an online retail store on the Yahoo Store platform, handling store setup, product catalog, and storefront customization
  • Managed end-to-end operations including shipping logistics, customer support, and order fulfillment
Skills
Languages & Frameworks Ruby on Rails (11 yrs), Node.js, JavaScript/ES6+, React, React Native, Hotwire/Stimulus, HTML/CSS/Sass, Bootstrap
Databases PostgreSQL (schema design, query optimization, GoodJob queue)
Infrastructure & DevOps Docker, DigitalOcean, AWS, Caddy, Let's Encrypt, CI/CD, server provisioning
AI & Tooling Claude Code (daily), agentic development workflows, LLM-assisted testing and automation
Integrations Stripe, Authorize.net, Twilio, Google Maps/Places, Shopify, HubSpot, Blackbaud, webhooks
Practices TDD, Minitest, code review, end-to-end feature ownership, production monitoring (Rollbar, Uptime Kuma)
Education
2002 B.S. Telecommunication Systems
University of Wisconsin–Stout — Menomonie, WI
Relevant coursework: C++, Visual Basic, Data Structures, Cisco IOS Networking
Awards &
Speaking
2013 Telly Award — Patterson Companies: "Practice Success"
2010 Summit International — Medtronic: "New Employee Orientation"
2009 Summit International — Ecolab: "Facility Management"
2008 Davey Award — Ecolab: "Facility Management"
2012–14 ASTD-TCC Conference Speaker (3 consecutive years) — Mobile LMS Development