Hi there! 🖖
I am currently unavailable for new projects, but I still do some coaching and due diligence work for engineering teams and investors. Feel free to connect on LinkedIn, or Twitter!
Karma logo
CTO & Co-Founder
2015 - 2020, Stockholm, Sweden
Karma is a social impact startup dedicated to eliminating food waste. Used by millions of users and tens of thousands of partners in over 225 cities.
Screenshot of the Karma app showing the map with pins
Screenshot of the Karma app where you can see a location opened
Screenshot of the Karma app on the user profile page
  • Strategy & business development
  • Management
  • Project management
  • Product development
  • Marketing & brand
  • Recruiting
  • Governance & compliance
  • GDPR & data protection
  • Online payments
  • Analytics & data pipelines
  • Systems architecture
  • Distributed systems
  • Software development
  • Operations
  • Kubernetes/Terraform/ArgoCD
  • CI/CD & tooling
  • Monitoring, metrics & logging
  • Security & IT
  • Google Cloud Platform
  • Digital Ocean/Firebase
  • JavaScript/Typescript
  • Go/Python/Elixir
  • Node/React/React Native/Gatsby
  • GraphQL/PostgreSQL/BigQuery
  • Bash/Nix
  • Most Innovative Companies 2019
  • Nordic Startup Awards 2018
  • Wired's Hottest Startups 2018
  • Nordic Startup Awards 2017
  • InUse Awards 2017
  • Årets Disruptör 2017
  • Wired's Hottest Startups 2017
  • Startup Tour Europe 2016
  • Framtidens Entreprenör 2016
The Karma founders, Ludvig Berling, Elsa Bernadotte, Mattis Larsson, Hjalmar StÄhlberg Nordegren
Mattis Larsson holding fruit, for the paper Ingenjören
Responster logo
CTO & Partner
2013 - 2015, Stockholm, Sweden
Responster is a beautiful survey and data collection tool that helps companies and organisations interact more efficiently with their customers, partners and employees. Web, embedded forms and fully native iOS and Android apps. Remote configuration & offline support.
Screenshot of the Responster app being used
Screenshot of the Responster app being used
Screenshot of the Responster app being used
  • Management
  • Partnerships
  • Project management
  • Product development
  • Recruiting
  • Online payments
  • Data visualisation
  • Systems architecture
  • Software development
  • Operations
  • Amazon Web Services
  • Monitoring, metrics & logging
  • Security & IT
  • PHP, JavaScript, Node
  • MySQL, MongoDB
  • Bash
  • Windows Server
Inspo logo
Inspo was a multi-channel aggregation app that sorted data into categories based on tags. Users subscribed to their interests and got a personalised feed. WYSIWYG admin editor and feed integration to Instagram, Facebook and Twitter.
  • API integrations
  • Instagram, Twitter, Facebook, Google
  • Data aggregation
  • Software Development
  • PHP/JavaScript
  • php-fpm/Nginx
  • MySQL
Cloak & Pixel logo
Cloak & Pixel
2011 - 2013
Exploring game concepts and consultancy software development work.
  • Concept art
  • 3D-modelling
  • Texturing
  • Game design
  • Software Development
  • ZBrush/3DS Max/Modo/Blender
  • Unreal Engine/Unity
  • C++/C#
  • Python/JavaScript
  • PostgreSQL
InHeart logo
2008 - 2012
InHeart was a health startup, allowing you to track and monitor your training, food and macronutrients. The app provided you with automated workout plans and recipes depending on your previous experience and your goals. Wiki for food resources. Partnerships with personal trainers. Never launched outside of the alpha stage.
  • Business development
  • Product development
  • Exercise physiology
  • Nutrition
  • Algorithms
  • Data visualisation
  • Systems architecture
  • Software development
  • Linux
  • Apache/Nginx
  • PHP/Python/JavaScript
  • MySQL
Sweco logo
Structural Engineer
2008 - 2010, Stockholm, Sweden
With 17 500 employees, Sweco is Europe's leading consultancy firm within technology and architecture. I worked as an engineer within the Hydropower department supporting the team with load calculations, cost/time projections and CAD drawings.
  • Project management
  • Load calculations
  • Concrete & reinforcement
  • Hydraulics
  • AutoCAD
  • Microstation
  • Flow simulations
Vattenfall logo
Master thesis
Vattenfall Research & Development
2007 - 2008, Älvkarleby, Sweden
Vattenfall is one of Europe's leading Energy Companies, with more than 100 years of supplying energy to homes and industry. I joined their Research & development division for my master thesis. The goal of the thesis was to study the forces inflicted upon a hydropower generator foundation, with a secondary aim to explain the stress-induced cracks observed at some locations. Through both an analytical process and by using nonlinear finite element calculations, several interesting connections between the model and real-world measurements was found.
NCC logo
Work manager
2005, Visby, Sweden
As a complement to my studies, I got some practical experience as a Work manager. I managed a few smaller projects and supported the teams on different work sites, doing everything from making sure they had what they needed to revising blueprints and calculations.
  • Project management
  • Documentation
  • Team management
  • Concrete & reinforcement
Poker Companion logo
Poker companion
2004 - 2005, LuleÄ, Sweden
I financed most of my studies through online Poker, mainly playing very intense heads-up Texas Hold'em. This is a high-variance game, with huge swings back and forth. To support my decision making, I built a native desktop application in C++ that gave me fold vs all-in odds depending on my hole cards and the stack sizes at the table. I also built a web version and was planning to expand into tournament bubble/Sit'N'Go type situations, but never got around to it.
  • Poker theory
  • Game theory
  • C++
  • Windows platform programming
  • Linux
  • Apache
  • PHP/JavaScript
  • MySQL
Eldid logo
2003 - 2005, LuleÄ, Sweden
Eldid was pixel graphic role-playing game running in the web browser with a PHP backend, complete with character screen, monsters, levelling, dungeons, skill trees, cooking, factions, you name it. The game was hosted on my own hardware in my student dorm, DNS server, email processing and anything else needed. The project was extremely ambitious and never launched. I am still looking to bringing the story of Eldid to the world. One day!
  • World building
  • Pixel art
  • Photoshop/Illustrator
  • Design & UX
  • Game backends
  • Game programming
  • Computer hardware
  • DNS
  • Email
  • Linux
  • Apache
  • PHP
  • MySQL
Logo of LuleÄ University of Technology
Master Programme in Civil Engineering
LuleÄ University of Technology
2002 - 2007, LuleÄ, Sweden
Master Programme in Civil Engineering with extracurricular courses in programming, networking, computer simulations and finite element analysis.
Helikopter ReklambyrÄ logo
Software developer & Designer
Helikopter ReklambyrÄ
2000 - 2002, PiteÄ, Sweden
Worked at a well-known advertising agency as part of their web team. I talked to clients, designed in Photoshop, built front end web applications, back end services and custom made WYSIWYG admin interfaces.
  • Project management
  • Photoshop/Illustrator
  • Design & UX
  • Client interactions
  • ASP
  • PHP
  • JavaScript
  • Access/MySQL
  • Loved by Paregos 💔
Lightloop logo
2000 - 2002
Hooked on photography, I built a web application where users could upload, categorise and process their photos. You could discover photos uploaded by other users. I was planning to also allow users to sell or “rent” their photos via Lightloop, but after doing some research into payment solutions I shelved that idea.
  • Project management
  • Photoshop/Illustrator
  • Design & UX
  • ASP (Classic ASP)/PHP
  • MySQL
  • ImageMagick
Svenska Spel logo
Software developer
Svenska Spel
1999 - 2000, Visby, Sweden
Software development as part of a team of programmers building features on the Svenska Spel web application.
  • ASP (Classic ASP)
  • Oracle DB
Pirate logo
Site owner
1998 - 2002
As part of the elusive global scene of pirates and couriers, I operated a high-performance FTP server (glFTPD) running 10x SCSI disks in a raid-0 configuration and 2x Gigabit network interfaces. I learned a huge amount of Linux administration, security, scheduling and scripting. The server was well known in the tight community, and was at one point the fastest pirate server in the world.
  • Management
  • Partnerships
  • Linux
  • Raid hardware
  • SCSI
  • High performance networking
Empty grey dummy logo
Computer hardware reseller
1997 - 1998
Buying computer parts and building desktop computers for clients. Managing software installations and support. I also helped local businesses set up networking.
  • Finance
  • Taxes
  • Business management
  • Computer hardware
  • Networking
  • Linux
  • Windows
MP3 logo
MP3 Heaven
1996 - 1997
MP3 Heaven was a community website dedicated to the sharing of music. Static HTML and basic CSS with a cgi-bin discussion forum. Hosted on Geocities.
  • Interactive functionality
  • FTP
Phew! Thanks for reading.
Now, say hello on Twitter :)