Tech lead for development teams
I take technical responsibility from architecture to delivery, talk to the people who order the work and make sure the team gets room to build. I have led a team from a blank page to production in eight months.
Petter Johan Sandvand Crantz
I build software and lead development teams. By day I am a senior consultant at Itera in Fredrikstad, and I live in Sarpsborg, Norway.
See projects Get in touch
8 mndfrom empty repo to production, with me as tech lead
#1Devin AI user at a large Nordic bank
25sites monitored by Enkeldrift, the company I co-own
About
I want to create good experiences for as many people as possible, and use technology to make existing solutions simpler. I like to challenge how things are done today, but first I want to understand the problem and the people who will use the solution.
In recent years I have been tech lead on projects that started from a blank page. I like owning the architecture, talking to the people who order the work and giving developers peace to build. I still write a lot of code myself.
I work best in cross-functional teams where several fields meet. I hold a bachelor's degree in informatics from the University of Oslo, specialising in digital economics and management. It gives me both technical breadth and business understanding. I am certified in AZ-900, ISTQB Foundation and the McKinsey Forward Program.
Alongside my job I co-own Enkeldrift, where we build monitoring for technical installations. Before IT I ran my own photography business, organised Færder barnefest for 5,000 children in Tønsberg and was an instructor at Redningsselskapet.
Outside work
I live in Sarpsborg with my dog, and I like to stay active. I love the water, and I volunteer at Redningsselskapet, the Norwegian rescue society, where I serve as a deckhand.
How I can help
For companies in Østfold and the rest of Norway that need a technical lead, want to get started with IoT monitoring, or want to use AI in development without losing quality.
IoT and monitoring
From sensor to dashboard and alerts. I built and run a monitoring platform with 25 sites in operation, and can help you get started without over-engineering.
AI-assisted development
I have set up AI workflows for whole development teams with Devin and GitHub Copilot, with measurable impact on delivery pace. I help teams use AI without losing quality.
Writing
I deliver more than ever. Why doesn't it always feel good?
Published on kode24, June 2026. About "AI apathy": the hollow feeling of high output, and how I regained a sense of mastery by focusing on understanding problems, system design and stakeholder work while AI agents write most of the code.
Projects
Enkeldrift
25 sites in operation. Sensors, a mobile-friendly dashboard and alerts by email and SMS when something deviates, including in healthcare. I co-own it and handle architecture, code and customer contact.
Heftige Event
A simple, fast site. I built the website for Heftige Event, which runs RIB boat trips on the Oslofjord. It shows the trips and makes it easy to get in touch.
Drifty – drift simulation
From student project to operational use. A map that shows where something in the sea may drift, built on simulation data.
Case management for travel insurance
60,000 cases a year, live in eight months. I led three developers from start to production. Sensitive health data, live updates across tabs and users, and lookups against population registers in four countries.
Leasing platform for a bank
Four apps for four countries in under a year. As tech lead I laid an architecture that lets us add new modules without redoing everything. Five developers, with AI tools as a normal part of the job.
Skills
Backend
- C# / .NET
- Entity Framework
- REST, OAuth, SignalR
- SQL Server, MongoDB
Frontend
- React, TypeScript
- React Native
- Mapbox, Tailwind
- Module Federation
Cloud and DevOps
- Azure, Kubernetes
- Azure Pipelines, GitHub Actions
- Terraform, Docker
- Grafana
Leadership and AI
- Technical leadership and architecture
- Stakeholder and product dialogue
- Devin, GitHub Copilot
- Security and code quality
Frequently asked questions
Who is Petter Johan Sandvand Crantz?
Petter Johan Sandvand Crantz (also known as Petter Johan Crantz) is a tech lead and senior consultant at Itera in Fredrikstad, Norway. He lives in Sarpsborg, holds a bachelor's degree in informatics from the University of Oslo and co-owns Enkeldrift.
What can Petter help with?
He can be tech lead for development teams, build IoT monitoring from sensor to dashboard and alerting, and help teams use AI-assisted development without losing quality.
Which technology does he work with?
Mainly C#/.NET and React with TypeScript, plus React Native, Azure, Kubernetes, Terraform and SignalR.
What is Enkeldrift?
Enkeldrift is a small company that delivers IoT-based monitoring of technical installations. Petter is a co-owner and handles architecture, development and customer contact. 25 sites are monitored today.
How do I get in touch or engage Petter?
He takes on assignments through Itera in Fredrikstad. Start with a message to him on LinkedIn, and he will bring Itera in.
Contact
Have an idea, a project, or just want to talk tech? Send me a message on LinkedIn. I take on assignments through Itera in Fredrikstad, so we start with a conversation and I bring Itera in.
LinkedIn GitHub