TL

Tommie Lagerroos

CTO and engineering leader. I build products and the teams behind them.

Tommie Lagerroos laughing during an interview
Photo: Mikaela Baggström

Competences

Eleven years of shipping software for clients and for my own companies, on my own and with the teams I've led. Technology is the tool. The job is making it work for the business.

Technical leadership

Setting direction for architecture and engineering, and making the trade-offs a business can live with.

  • Architecture
  • Tech strategy
  • Build vs buy
  • Code quality
  • Technical due diligence

Product ownership

Owning the product as much as the platform. From discovery and scope to roadmap and release.

  • Discovery
  • Roadmaps
  • Prioritisation
  • MVPs
  • Stakeholder alignment

People and teams

Hiring, onboarding and growing developers, designers and project managers. Building teams that own their work.

  • Recruitment
  • 1:1s and feedback
  • Team structure
  • Agile delivery
  • Culture

Infrastructure and operations

Production platforms in Terraform on AWS, a self-hosted CI fleet and deploys nobody has to fear.

  • DevOps
  • CI/CD
  • Containers
  • Observability
  • Incident handling

Security

Security as a default, not a phase. Especially in fintech, insurtech and anything touching personal data.

  • Secure by design
  • Access control
  • GDPR
  • BankID and strong auth
  • Audits

Scale and cost

Systems that grow with the business, and a cloud bill that doesn't grow faster. I measure before I cut.

  • Performance
  • Scalability
  • Cloud cost control
  • Capacity planning
  • Vendor choice

Business sense

I've founded companies, built a team from zero and sold a business, so I know what technology costs and what it has to earn.

  • Scaling teams
  • Negotiation
  • Pre-sales
  • Contracts
  • Budgets and P&L

Applied AI

From LLM APIs and RAG on vector search to MCP servers and agents. I'm most interested in how teams work safely when agents make real decisions.

  • LLM integration
  • RAG
  • Agentic workflows
  • MCP
  • Structured extraction
  • AI governance

Toolbox

From boardroom to bare metal. I choose the stack for the problem, not the other way around. The language is rarely the interesting part.

Leadership

  • Tech strategy
  • Org design
  • Hiring
  • Onboarding
  • Coaching
  • Performance reviews
  • Change management
  • Stakeholder management

Product

  • Product ownership
  • Discovery
  • MVPs
  • Roadmaps
  • Prioritisation
  • UX
  • Analytics
  • Go-to-market

Business

  • Negotiation
  • Sales and pre-sales
  • Contracts
  • Pricing models
  • Budgeting
  • P&L
  • Vendor management
  • Board work

Backend

  • Laravel
  • PHP
  • Node.js
  • REST
  • OpenAPI
  • PostgreSQL
  • MariaDB
  • Redis
  • Typesense

Frontend

  • TypeScript
  • React
  • Vue
  • Angular
  • Tailwind
  • Vite

Mobile

  • React Native
  • Expo
  • EAS
  • App Store
  • Google Play

Cloud and infra

  • AWS
  • GCP
  • Azure
  • Terraform
  • Docker
  • ECS
  • GitHub Actions
  • Self-hosted CI
  • Observability

Security

  • BankID
  • OAuth 2
  • OpenID Connect
  • JWT
  • WAF
  • KMS
  • GDPR
  • EU data residency
  • Security audits

AI

  • LLM integration
  • RAG
  • Agentic workflows
  • MCP
  • Vector search
  • Guardrails
  • Claude
  • Azure OpenAI
  • Amazon Bedrock

Architecture and practices

  • TDD
  • DDD
  • Clean architecture
  • Event-driven architecture
  • Modular monolith
  • API-first
  • Infrastructure as code
  • Continuous delivery
Tommie Lagerroos and a colleague at Aourly trying on smart glasses and laughing
Aourly, Stockholm. Photo: Mikaela Baggström

Experience

The roles I've held and the companies I've started since 2015. One I sold, and every one taught me something. Open a row for the details.

Leadership

What the people I work with can count on.

Tommie Lagerroos working at a laptop with two colleagues
Photo: Mikaela Baggström

  1. Clear goals, no guesswork

    Everyone knows the goal, what good looks like and who owns what. Most friction in a team starts where one of those is missing.

  2. Raise the hard things early

    I look for whatever is bothering the team before it starts to cost us. A five-minute conversation today saves a five-week problem later.

  3. Close to the work, sleeves rolled up

    Remote or in the same room, I stay close to the work. I roll up my sleeves and take on the hard problems with the team rather than managing from a distance, and I still love a good whiteboard session.

In their words

From some of the people I've worked with.

He is comfortable working at a strategic level, but is equally willing to roll up his sleeves and get things done. … On a personal level, Tommie is straightforward and an excellent communicator.
Read the full reference

I am providing this reference based on my experience as Chair of the Board of Techlove and Techlove Dev between 2021 and 2024, during which Tommie was involved in the board's work for most of that period.

My impression of Tommie is that he is highly ambitious, solution-oriented, responsible and curious. These qualities enable him to quickly embrace new approaches and technologies and put them into practice, both within his own organisation and in his work with clients. He is comfortable working at a strategic level, but is equally willing to roll up his sleeves and get things done.

On a personal level, Tommie is straightforward and an excellent communicator. His outgoing nature is a real asset. He is well-liked by both colleagues and clients, not least because he always brings warmth, positivity and a good sense of humour to his interactions.

Anita RollBoardroom pro. Chaired the board Tommie worked with, 2021–2024
He combines deep technical knowledge with strategic thinking and a remarkable ability to turn ideas into action. … As a leader, Tommie is clear, confident and genuinely warm.
Read the full reference

What impresses me most about Tommie is the extraordinary breadth and depth of his expertise. He combines deep technical knowledge with strategic thinking and a remarkable ability to turn ideas into action.

As a leader, Tommie is clear, confident and genuinely warm. He brings energy, determination and a strong sense of purpose to everything he does, inspiring the people around him while making sure things actually get done.

Tommie doesn't just see opportunities – he makes them happen.

Jennie Hagman (opens in a new tab)Product owner. Colleague in the management team

Events & talks

I like a full room. Hosting, speaking and getting people together.

“Recruiting from the UK took us nine long months, and we would rather hire at home. What concrete proposals would help companies like ours keep growing?”
My question to Ulf Kristersson and Magdalena Andersson, live on TV4's Duellen in 2022. Translated from Swedish.
Tommie Lagerroos standing in the audience with a microphone, asking his question live on TV4 Duellen 2022
Ulf Kristersson on stage answering the question, seen from behind the audience

Stills: TV4, Duellen 2022. Asking the question, and Ulf Kristersson answering it.

Group photo of around forty attendees at Laravel Meetup Stockholm at Kameo, with Tommie Lagerroos in the middle
Laravel Meetup Stockholm, Kameo
Tommie Lagerroos on stage with the Swedish Laravel Association at Laravel Live Denmark 2026 in Copenhagen, receiving a gift from the Danish Laravel Association
Representing the Swedish Laravel Association at Laravel Live Denmark 2026
Tommie Lagerroos smiling at Stockholm Pride in a rainbow techlove t-shirt, holding Pride flags
Stockholm Pride with techlove
A dark exhibition hall filled with rows of gamers at their computers during the LAN party at Stockholmsmässan
Sweden's first LAN party @ Stockholmsmässan
Altitude Events banner waved on an outdoor stage in front of a cheering crowd at a Nordic ski resort
Altitude Events, Nordic mountains
Tommie Lagerroos giving a talk at Laravel Meetup Stockholm at techlove
Building an MVP with Filament, techlove

Contact

Let's talk.

The best ideas start over a fika. I'll bring the cinnamon buns.

[email protected]+46 72 225 77 97LinkedIn (opens in a new tab)