Gustav Skrefsrud

Full-stack systems builder, from firmware to interface

I design and build custom systems shaped around one specific product or business: embedded firmware and Bluetooth, mobile and web interfaces, backends and the tools around them. What I care about most is the architecture that ties them together.

Co-founder at ThetaMask, a light-based mask built for research studies, where I lead software and firmware. Studying for an MSc in Entrepreneurship at VU Amsterdam and the University of Amsterdam, and available now for a part-time role of 8 to 15 hours a week, remote or in Amsterdam.

g.skrefsrud@gmail.com

Portrait of Gustav Skrefsrud

Selected work

UtleieFlyt customer catalogue for an event-rental company, with demo data

UtleieFlyt · 2025 to now

Rental software for scaffolding and event companies

Multi-tenant SaaS for Norwegian rental businesses: a customer-facing catalogue, availability-aware booking, inventory, invoicing and admin workflows. Tenant isolation is enforced in the database with row-level security.

  • Next.js
  • Supabase
  • Stripe
  • Playwright

Built and maintained alongside my other work. Pre-revenue.

utleieflyt.no →
Pango's internal staffing dashboard, shown with demo data: consultant numbers and department availability

Pango Consulting · 2025 to 2026

A staffing platform handed over to other developers

Pango's internal platform for staffing: consultant profiles and skills, availability, project roles and per-department dashboards. Invite-only, with admin, manager and consultant roles enforced in the database with row-level security.

I built it alone, then set it up for handover: versioned migrations and seed data give any developer a working local copy in one step. Pango's own developers and designers have extended it since, and it is in use across the organisation.

  • Next.js
  • TypeScript
  • Supabase
  • Postgres full-text search

Internal tool.

About Pango Consulting (their site) →

Earlier work: Vipps payments for fellesen.no as a Pango consultant, and freelance websites for steelco.no and skistativ.no.

Background

The full picture is in my CV (PDF).