Johan Hellstedt

Experience

A concise timeline of the roles and impact I have delivered.

Mar 2025 - Present

Tech Lead/Team Lead - Backend at Sigma Technology Digital Solutions

  • Worked as part of Sigma's in-house team, mentoring junior developers and leading backend development for an e-commerce platform built with .NET, React, and commercetools.
  • Designed and developed a CMS-driven content platform in a Turborepo monorepo using Next.js, React, Hono BFF API and Entra ID authentication. This was integrated with Optimizely CMS, Occtoo product data, and Caesar CRM.
  • Served as team lead with responsibility for the professional growth of eight team members through coaching and certifications, as well as fostering team culture through social and office initiatives.

Aug 2022 - Mar 2025

Backend Developer at Avanade

  • Built an internal web application for the centralized distribution of products and beverages to Systembolaget stores across Sweden.
  • Owned the backend development, building it with .NET 8, a CQRS-based microservice architecture, and Azure services including App Services, Managed Identity, and Azure Functions. Developed the API as a pure REST API secured through Microsoft Entra ID app registration.