Andreas Geffen Lundahl, Developer in Växjö, Sweden
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Andreas Geffen Lundahl

Verified Expert  in Engineering

Software Developer

Location
Växjö, Sweden
Toptal Member Since
January 20, 2016

Andreas是一位注重产品的软件工程师，对创业公司充满热情. 对产品的投入和对代码的投入是一样的, Andreas努力做出让用户和其他开发人员都满意的健壮的贡献. 作为一名团队成员，他渴望分享知识，改进流程，并向同事学习.

JavaScriptSQLNode.jsRuby on Rails (RoR)ClojurePostgreSQLRubyReactAmazon Web Services (AWS)DockerReduxElectronTypeScriptPhoenixShopify CustomizationsGitHubSassPouchDBEtsy APIConsul

Portfolio

Jun Group
Elixir, Ruby, Ruby on Rails, JavaScript, React, Phoenix, PostgreSQL...
Joint Academy
Ruby, Ruby on Rails, TypeScript, Python, Go, PostgreSQL, React Native...
Aline
React, JavaScript, Node.js, Slate.js, GraphQL, TypeScript, Redux

Experience

JavaScript - 14 yearsPostgreSQL - 12 yearsRuby on Rails (RoR) - 12 yearsNode.js - 12 yearsClojure - 12 yearsReact - 9 yearsAmazon Web Services (AWS) - 8 yearsTypeScript - 3 years

Availability

Part-time

Preferred Environment

Git, Emacs, Linux, OS X

The most amazing...

...我建立的是一个交易应用程序，用于在瑞典股票市场上执行预定义的策略.

Work Experience

Software Engineer

2022 - PRESENT
Jun Group
  • 将Ruby on Rails广告服务器的受众部分提取到使用Elixir和Phoenix构建的单独服务中.
  • 扩展其受众的能力，以容纳数十亿目标，同时大大提高读写性能.
  • 构建了一个用户界面，用于管理受众服务中的受众和细分数据.
Technologies: Elixir, Ruby, Ruby on Rails, JavaScript, React, Phoenix, PostgreSQL, Amazon Web Services (AWS)

Software Engineer

2021 - 2022
Joint Academy
  • Built the back-end part of Groups, 该公司为患者提供在线支持小组的倡议.
  • Led the development of treatment switching, 为回头客提供更好的服务，最终增加收入.
  • 参与公司进入美国市场的工作, 使应用程序适应美国的合规性和计费.
技术:Ruby, Ruby on Rails (RoR)， TypeScript, Python, Go, PostgreSQL, React Native, React

Software Engineer

2019 - 2021
Aline
  • Laid the foundation for the front-end architecture.
  • 构建核心字处理器与自定义布局引擎, similarly to how Google Docs is implemented.
  • 对Slate进行分叉，并添加了一个在现成版本中不容易支持的功能, such as pagination.
Technologies: React, JavaScript, Node.js, Slate.js, GraphQL, TypeScript, Redux

Architect

2019 - 2019
Touchtech
  • 为特定的触摸屏用例设计并实现了MVP.
  • 为项目的多个区域设置基础，例如测试套件和Redux存储.
  • 在PouchDB和应用程序之间编写了一个DB抽象层.
技术:Electron, Redux, React, TypeScript, PouchDB

Architect

2019 - 2019
Outnorth
  • 帮助Outnorth实现电子商务平台的现代化, 北欧领先的户外设备生产基地之一. 除了致力于新平台的架构和实现, Andreas还与内部开发团队一起改进内部流程.
技术:Amazon Web Services (AWS)， PostgreSQL, Ruby on Rails (RoR)， Ruby

Acting CTO

2017 - 2018
WM3
  • 领导产品的开发，完善产品的长期愿景.
技术:亚马逊网络服务(AWS)、JavaScript、Ruby on Rails (RoR)、Ruby

Architect

2017 - 2017
Undisclosed Trading Application
  • 为股票交易者设计并领导了一个应用程序的实现. 该应用程序的建立是为了促进股票市场上某些策略的执行.
Technologies: Electron, Clojure

Developer

2016 - 2017
Articulate
  • Led the implementation of checkout flows, 从网站到与Stripe和Salesforce的整合, and everything in between.
技术:Redux, React, JavaScript, Ruby on Rails (RoR)， Ruby

Developer

2015 - 2016
Fortnox
  • 设计、架构和实现一个全新的产品.
Technologies: React, JavaScript, Java

Developer

2013 - 2014
Fortnox
  • 在Fortnox的前端架构现代化和React实现中发挥了关键作用, 瑞典领先的商业软件供应商之一.
Technologies: React, JavaScript

Team Lead

2013 - 2013
Kryapp
  • Led a team for healthtech startup Kryapp. 这项工作主要包括构建更多的功能, 比如通过了严格认证程序的医疗记录系统.
技术:MongoDB, JavaScript, Ruby on Rails (RoR)， Ruby

Developer

2013 - 2013
Multiple Swedish Public Transport Companies
  • 帮助设计和实施瑞典公共交通公司的CMS和CRM组合. 开发出来的系统每天仍有数十万人在使用.
技术:PostgreSQL, JavaScript, Ruby on Rails (RoR)， Ruby

Architect

2012 - 2013
WM3
  • Helped architect the initial MVP.
技术:PostgreSQL, JavaScript, Ruby on Rails (RoR)， Ruby

Team Lead

2012 - 2012
Kryapp
  • 带领团队为一家医疗科技初创公司打造MVP. 除了带领一个由开发人员和设计师组成的团队，我还负责初始架构.
技术:MongoDB, JavaScript, Ruby on Rails (RoR)， Ruby

Developer

2011 - 2012
Boss Media
  • 为玩家开发了可定制的管理面板.
技术:JavaScript, Ruby on Rails (RoR)， Ruby

Developer

2011 - 2011
Moveq
  • 对卡车的地理跟踪和可视化的发展做出了贡献, time management for drivers, and more.
技术:Java, JavaScript, Ruby on Rails (RoR)， Ruby

Developer

2009 - 2010
Quickbutton
  • 通过构建内部工具和系统，帮助欧洲一家领先的名牌制造商实现数字化并改善其工作流程.
Technologies: Backbone.js, JavaScript, Java

Mapery

Mapery is a collection of luxury map prints. 使用独特的设计方法，我们提供最优雅和永恒的地图印刷品.

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.

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 (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

Frameworks

Redux, Selenium, ClojureScript, Ruby on Rails (RoR)， Electron, Phoenix, Relay, React Native

Languages

ECMAScript (ES6), Less, CSS3, ES7, Sass, CoffeeScript, HTML, CSS, Clojure, SQL, JavaScript, Ruby, TypeScript, Elixir, PHP, GraphQL, Python, Java, Go

Paradigms

Agile, Test-driven Development (TDD), Functional Programming, Distributed Programming, Scrum, Data Science

Platforms

Shopify，亚马逊网络服务(AWS)， Docker，亚马逊EC2, AWS Lambda, Linux, OS X, Salesforce

Storage

PostgreSQL, Amazon 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

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