Andreas Geffen Lundahl
Verified Expert in Engineering
Software Developer
Andreas is a product-minded software engineer with a passion for startups. Equally invested in the product as he is in the code, Andreas strives for robust contributions that make both users and fellow developers happy. As a team member, he's eager to share knowledge, improve processes, and learn from his peers.
Portfolio
Experience
Availability
Preferred Environment
Git, Emacs, Linux, OS X
The most amazing...
...thing I've built is a trading application for executing predefined strategies on the Swedish stock market.
Work Experience
Software Engineer
Jun Group
- Extracted the audience part of their Ruby on Rails ad server to a separate service built with Elixir and Phoenix.
- Scaled the capabilities of their audience to hold billions of targets while vastly improving both read and write performance.
- Built a user interface for managing audience and segment data in the audience service.
Software Engineer
Joint Academy
- Built the back-end part of Groups, the company's initiative to offer online support groups for patients.
- Led the development of treatment switching, offering a better service for returning patients and ultimately increasing revenue.
- Worked on the company's introduction to the US market, adapting the application for US compliance and billing.
Software Engineer
Aline
- Laid the foundation for the front-end architecture.
- Built the core word processor with a custom layout engine, similarly to how Google Docs is implemented.
- Forked Slate and added a functionality that was not easily supported in the off-the-shelf version, such as pagination.
Architect
Touchtech
- Architected and implemented an MVP for a specific touchscreen use case.
- Set the foundation for multiple areas of the project, such as the test suite and the Redux store.
- Wrote a DB abstraction layer between PouchDB and the application.
Architect
Outnorth
- Helped modernize the eCommerce platform for Outnorth, one of Northern Europe's leading sites for outdoor equipment. Besides working on the architecture and implementation of the new platform, Andreas also worked with the in-house development team to improve internal processes.
Acting CTO
WM3
- Led the development and improved the long-term vision for the product.
Architect
Undisclosed Trading Application
- Architected and led the implementation of an application for stock traders. The application was built to facilitate the execution of certain strategies on stock markets.
Developer
Articulate
- Led the implementation of checkout flows, from Articulate's website to integrations with Stripe and Salesforce, and everything in between.
Developer
Fortnox
- Designed, architected, and implemented a completely new product.
Developer
Fortnox
- Played a key role in modernizing the front-end architecture and implementing React for Fortnox, one of the leading business software providers in Sweden.
Team Lead
Kryapp
- Led a team for healthtech startup Kryapp. The work mostly consisted of building more features, such as a medical record system which passed a rigorous certification process.
Developer
Multiple Swedish Public Transport Companies
- Helped architect and implement a combined CMS and CRM for Swedish public transport companies. The systems developed are still daily used by hundreds of thousands of people.
Architect
WM3
- Helped architect the initial MVP.
Team Lead
Kryapp
- Led a team to build an MVP for a startup in healthtech. Besides leading a team of developers and designers, I was also responsible for initial architecture.
Developer
Boss Media
- Contributed to the development of customizable administrative panels for players.
Developer
Moveq
- Contributed to the development of geographical tracking and visualization of trucks, time management for drivers, and more.
Developer
Quickbutton
- Helped one of Europe's leading name tag manufacturers to digitalize and improve their workflows by building internal tools and systems.
Experience
Mapery
Prints from Mapery have sold worldwide, directly to consumers through the website, wholesale to brick-and-mortar stores, and on platforms such as Etsy.
Mapery has received over 600 five-star reviews.
Skills
Languages
ECMAScript (ES6), Less, CSS3, ES7, Sass, CoffeeScript, HTML, CSS, Clojure, SQL, JavaScript, Ruby, TypeScript, Elixir, PHP, GraphQL, Python, Java, Go
Frameworks
Redux, Selenium, ClojureScript, Ruby on Rails (RoR), Electron, Phoenix, Relay, React Native
Libraries/APIs
Shopify API, Node.js, Stripe, Underscore.js, Backbone.js, React, Sidekiq, Etsy API, Normalizr, GitHub API, Auth0 API
Tools
Git, RSpec, GitHub, Amazon Elastic Container Registry (Amazon ECR), Redux Thunk, Gulp, Subversion (SVN), Adobe Photoshop, Adobe Illustrator, Apache ZooKeeper, AWS ELB, AWS CLI, Amazon Elastic Container Service (Amazon ECS), AWS Fargate, Amazon Virtual Private Cloud (VPC), Emacs, GIS, Amazon ElastiCache
Paradigms
Agile, Test-driven Development (TDD), Functional Programming, Distributed Programming, Scrum, Data Science
Platforms
Shopify, Amazon Web Services (AWS), Docker, Amazon EC2, AWS Lambda, Linux, OS X, Salesforce
Storage
PostgreSQL, Amazon S3 (AWS S3), RethinkDB, MongoDB, Redis, Elasticsearch, PouchDB, PostGIS
Other
Shopify Customizations, Web App Development, Etsy, Consul, User Experience (UX), Datomic, Customer Development, Business Development, Slate.js, Graphics