Mathias Maagerø Lekven

Samvar AS 2026–present Fullstack developer

Samvar — Hemvar and Fagvar

Samvar is two products on one platform. Hemvar is the operations app for Norwegian housing companies — borettslag and sameier — where the board looks after its property: deviations with photos, recurring maintenance tasks, long-term plans and documents, all per building. Fagvar is the tool professionals use to carry out condition analyses. The point is the link between them: the report a professional writes in Fagvar lands straight in the board's Hemvar, instead of becoming a PDF attached to an email.

I build both apps and the backend they share. Three React 19 apps — Hemvar, Fagvar and an internal admin tool — in a pnpm and Turborepo monorepo with Vite and TanStack Router, against a single shared .NET API. Clerk handles sign-in, and tenants are typed per app, so one person can sit in a Fagvar firm and on a Hemvar board without the two mixing. Building parts are keyed on NS 3451 codes, properties are looked up against Kartverket's cadastre, and billing runs per building through Tripletex. The admin app carries KPIs, customer follow-up and re-syncing of shared reports across both products.

• React 19
• TypeScript
• Vite
• TanStack Router
• .NET
• Clerk
• Turborepo
• Tripletex

Admincontrol Sep 2025–Sep 2026 Fullstack developervia Sopra Steria

Admincontrol — board portal and virtual data room

Admincontrol provides a board portal and virtual data room for boards, management teams and advisers across the Nordics. Everything inside it is confidential — board papers, transaction documents, sensitive personal data — and access control and auditability aren’t a detail around the product, they are the product.

I worked fullstack on the product, with React and TypeScript on the front end and .NET against SQL Server behind it. The demand for precision ran through every layer: a mistake in access control or the data model isn’t a cosmetic bug here, it’s a security breach. I used AI heavily to keep the pace high, but with human verification as a deliberate layer of its own — I read and understood every line that went further, and let nothing through on trust alone. Speed from the machine, control from the human.

• React.js
• TypeScript
• .NET
• C#
• SQL Server

Valgdirektoratet Oct 2022–Mar 2024 Frontend and fullstack developer

Electronic voting for a public referendum

The Norwegian Directorate of Elections runs national election operations. For the referendum in Søgne, Songdalen and Kristiansand, it needed — for the first time — a platform where eligible voters could cast their vote electronically.

I built the voting portal in Vue and TypeScript, on a new design system derived from the directorate's own. On the backend I implemented a Backend-for-Frontend in .NET 7 with Duende Identity Server, so voters could authenticate through ID-porten. I ran the user testing myself, against WCAG 2.1.

The referendum ran partly electronically — simpler and cheaper to administer than a purely paper-based vote.

• Vue.js
• TypeScript
• .NET 7
• OIDC / ID-porten
• WCAG 2.1
• C#
• Duende Identity Server
• Scrum
• GitLab

Norsk Helsenett Jul 2021–Oct 2022 Frontend developervia Capgemini

SyntPop — synthetic test data for healthcare

Norsk Helsenett needed realistic but synthetic test people, so digital health services could be quality-assured without touching real personal data. SyntPop is the self-service tool for finding, creating and editing them.

I built the frontend in React against a .NET API documented with OpenAPI. SyntPop piloted Norsk Helsenett's new design system, so I worked closely with the design team to build WCAG 2.1 in from the start. I also wrote Python scripts to clean health data.

• React.js
• TypeScript
• .NET
• WCAG 2.1
• Python
• OpenAPI / Swagger
• Scrum

Extenda Retail Jan 2021–Jun 2021 Software engineer

Point-of-sale systems: operations and modernisation

Extenda Retail supplies point-of-sale and store systems to leading grocery chains across Norway and the Nordics. These systems are business-critical: if they stop, the shops stop.

I maintained and modernised large .NET systems running in daily production, from .NET Framework 4.5 towards .NET 5. Parts were event-driven over RabbitMQ. The team worked test-first, so the job was often writing tests around existing code before it could safely change.

• C#
• .NET Framework
• RabbitMQ
• TDD
• MySQL
• .NET Core
• GitHub

Statped Oct 2019–Dec 2020 Fullstack developer

Tastaturbo and modernising educational games

Statped builds digital learning tools for children and young people with special needs. Tastaturbo is a writing tool used in schools, alongside a portfolio of older learning games built in Flash.

I developed Tastaturbo further and ported old Flash games to JavaScript. The work happened close to teachers and test users, and I user-tested regularly with blind and deaf pupils. This is where I learned how braille displays and screen readers are really used.

The learning tools stayed usable in schools after Flash was discontinued.

• JavaScript
• Universell utforming
• Brukertesting
• HTML5
• CSS
• Scrum