Rein Oterholm

Engineer

New York
+1 512 667 4081

Summary

3Y Health | June 2023 - Present
Healthcare technology platform - transforming workflows through AI automation.
• Acting Head of Engineering (September 2024 - Present)
• Engineering Manager (June 2023 - September 2024)

Engineering Manager & Founder | REX | 2021 - 2023
Real estate technology ecosystem.

Software Engineer | Fleks | 2020 - 2021
Norwegian car subscription platform - vehicle-as-a-service technology

Founder & CEO | Otter Productions | 2016 - 2020
Esports broadcast technology - live production software and consultancy

Key Achievements

Drove ~35x company growth at 3Y Health by leading a 10+ person engineering team and delivering major platform features such as Revenue Cycle Management, AI clinical documentation, and multi-tenant architecture.

Built and scaled teams from 0 to 14 across North America, Europe, and Asia, implementing engineering practices that ensured high delivery velocity and long-term retention.

Delivered technology trusted by global leaders (Twitch, EA, PUBG Corp, DreamHack) powering esports events with millions of live viewers.

Founded and scaled 3 successful ventures: 3Y Health (Healthcare Marketplace), TechCore (infrastructure PaaS), and Otter Productions (broadcast platform).

Experience

3Y Health

Healthcare technology platform transforming workflows through AI automation

June 2023 - Present

Acting Head of Engineering

September 2024 - Present

Leading Through Transformation

Stepped into Acting Head role during significant organizational changes: leadership transition after departure of the previous Head of Engineering, two company rebrands, and major strategic shifts. Successfully maintained team stability with only one departure (engineer recruited by Google after thriving at 3Y). While navigating these complex transitions with just 6 engineers, delivered 2.6x platform usage growth and cut $100K+ in annual software costs.

Major Platform Deliveries
  • Revenue Cycle Management: Implemented complete RCM solution for healthcare billing
  • AI Clinical Notes: Built AI-powered clinical documentation system
  • AI Support Agents: Deployed chat agents automating customer support
  • AI Document Review: Integrated with third parties to ensure compliance
  • Automated Operations: Benefits verification and prior authorization workflows
  • Infrastructure: IDP migration to Supabase

Engineering Manager

June 2023 - September 2024

12x Platform Usage Growth with 8 Engineers

Achieved 12x platform usage growth with an average of just 8 engineers, taking the platform from near-zero to significant GMV. Built the technical foundation that enabled all future growth.

Core Platform Transformation
  • Multi-Tenant Architecture: Converted entire platform from single to multi-tenant
  • Advanced Permissions: Designed and built resource-based permission system from ground up
  • Payroll System: Completely revamped payroll functionality
  • Customer Dashboards: Built comprehensive analytics dashboards for customer insights
  • Recruited and mentored engineers who became top performers; one promoted to team lead

REX

Real estate technology ecosystem

August 2021 - January 2023

Engineering Manager & Founder

TechCore - Infrastructure Platform (Founder & Technical Lead)
  • Founded and built self-service infrastructure platform (competitor to Railway/Vercel)
  • True multi-tenant solution with isolated AWS accounts per customer
  • Abstraction layer enabling 2-week additions of new resources (Redis, RabbitMQ)
  • Reduced deployment time from days to 5 minutes with zero code required
  • Achieved adoption by 3 portfolio companies within first year
  • Received "Unicorn in the Making" award from REX Leadership

Fleks

Norwegian car subscription platform - vehicle-as-a-service technology

November 2020 - July 2021

Software Engineer

  • Mastered serverless architecture (AWS Lambda, Architect framework)
  • Built RESTful APIs supporting core platform functionality
  • Converted marketing site from Gatsby to Next.js
  • Led development of dynamic tools for vehicle management, enabling 186% customer growth (700 to 2000) in 2 months
  • Onboarded and mentored 3 engineers during rapid scaling phase

Otter Productions

Esports broadcast technology - live production software and consultancy

January 2016 - November 2020

Founder & CEO

  • Built real-time broadcast integration system from scratch (UDP state capture, WebSocket updates, MIDI stage effects, broadcast fill/key conversion)
  • Expanded stack over 5 years (SQL, MongoDB, Redis, Kubernetes) into a cloud service based architecture
  • Created SaaS platform for esports teams (analytics + training modules)
  • Delivered broadcast control software for producers (camera switching, LED animations)
  • Grew from solo developer to CEO managing 14+ person productions
  • Clients: Twitch, EA, PUBG Corp, Dreamhack, FaceIT, GLL
  • Signed EA Apex Legends tournament contract before COVID-19 impact

Technical Skills

Programming Languages

Node.jsReactTypeScriptKotlin

Infrastructure & Cloud

AWSGCP

Specialized

Multi-tenant SaaSAI/ML IntegrationReal-time SystemsServerless

Education

Computer Science

University of Oslo

2015 - 2020