Tobias Zimmergren

Open to new engagements

Hi, I'm Tobias

Technology leader and hands-on builder

CTO · AI engineering · Azure · Security · .NET

I help companies build secure products, cloud platforms, and AI-driven engineering teams. In more than 20 years I've been a CTO and co-founder, a principal lead at Microsoft, a head of security, and a founder, and I still stay close to the code.

What I can help with ↓

Hire me

What I can help with

I take on hands-on development, fractional leadership, and advisory engagements. I'm based in Malmö, Sweden, and used to working remotely across time zones.

  • Fractional CTO and technical leadership

    Technology strategy, architecture, and engineering leadership from plan to delivery. Right-sizing teams and leading them across time zones.

    • Tech strategy
    • Team design
    • Distributed teams
    • Executive advisory
  • Software engineering and development

    Hands-on development as part of your team, not just the architecture. 20+ years of .NET and C#, plus Python: backend APIs, distributed services on Azure, integrations, and prototypes that turn into products.

    • .NET & C#
    • Python
    • Backend APIs
    • Distributed systems
    • Code reviews
  • Agentic AI engineering

    AI-first engineering where agents do the heavy lifting and senior engineers steer. Plus building for AI: MCP servers, AI-backed APIs, and Azure AI Foundry solutions.

    • AI-first SDLC
    • MCP servers (C#)
    • Azure AI Foundry
    • AI in regulated industries
  • Security and compliance

    Secure-by-design products and compliance that holds up in third-party audits, plus penetration testing, incident response, and security operations.

    • ISO 27001
    • SOC 2 Type II
    • GDPR
    • Zero trust
    • Sentinel & Defender
  • Azure architecture and cloud platforms

    15+ years with Azure, including leading workstreams on Microsoft's Cloud Adoption Framework. Landing zones, well-architected designs, and managed PaaS over infrastructure you babysit.

    • Landing zones
    • Well-Architected
    • Cloud Adoption Framework
    • Cloud optimization
  • SaaS modernization and reliability

    Turning traditional software into cloud-native SaaS, and running it reliably across regions against clear SLOs and SLAs.

    • Cloud-native
    • Microservices
    • Multi-region
    • SLOs & SLAs
  • Workshops, training, and talks

    Workshops for engineering and leadership teams on AI-first engineering, Azure, and security. I've trained 500+ professionals and spoken at international conferences.

    • Team workshops
    • Upskilling
    • Conference talks

Experience

Where I've been

  1. 2026 — Present Now

    Independent consultant and contractor Self-employed

    Taking on engagements in software engineering, technology leadership, AI, Azure, and security.

  2. 2025 — 2026 1 year

    Technical co-founder and CTO PONS

    Came in to re-platform the product. Delivered PONS v2.0 with security and compliance by design, moved engineering to agentic AI, and passed ISO 27001, SOC 2 Type II, and GDPR audits. With the new platform live, the job I came in to do is done.

  3. 2022 — 2025 3 years

    Principal Lead Microsoft

    Led strategy and execution for Cloud Adoption Framework for Azure workstreams, guidance used by millions of people on Microsoft Learn.

  4. 2015 — 2022 7 years

    Head of Technical Operations and Head of Security Rencore

    Took a traditional PC software company cloud-native on Azure, and from 2018 also owned company-wide security, privacy, and compliance, including the SOC 2 Type II program.

  5. 2009 — 2015 6 years

    Founder and principal consultant TOZIT AB

    Consulting, architecture, and training in SharePoint, Office 365, and Azure, for clients like Netcompany and Daimler (through Microsoft Consulting Services). TOZIT also owned the two product suites below.

  6. 2009 — 2015 6 years

    Founder SharePointDiscussions.com

    A discussion forum suite for SharePoint 2007 to 2016, in eight languages, used by more than 400 organizations worldwide. Acquired by a Scandinavian product and service integrator.

  7. 2013 — 2015 2 years

    Founder Pointbird.com

    A suite of focused add-ons for SharePoint Online and SharePoint 2007 to 2013, from short URLs to social web parts. Acquired by a Scandinavian product and service integrator.

    The story of TOZIT, SharePointDiscussions.com and Pointbird →
Full career history on LinkedIn →

Alongside the day job