Jaap Groeneveld | Freelance Software Consultant

CV

Staff Engineer

Jimdo

Since 08/2022

Engineering Manager

Jimdo

12/2020 - 08/2022

Managing a team of engineers and testers.

People Management

Architecture

PHP

AWS

Freelance Software Consultant

Since 05/2019

EOS Technology Solutions (01/2020 - 06/2020): Coaching two teams in craftmanship, code quality and testing.

Testing

Coaching

Heidelberg School of Education (01/2020): Technical Product Management / Project Scoping.

Product Management

Scoping

Technical Consulting

Fielmann AG (05/2019 - 12/2019): Developing a system to process customer satisfaction surveys.

Kotlin

Spring Boot

Kafka

Kubernetes

Docker

Microservices

Team Lead Engineering

XING SE

01/2018 - 04/2019

Technical responsibility, quality assurance and personnel responsibility for a product. Leading up to two teams, consisting of 12 Backend-, Frontend- and QA-Engineers on side and in remote locations. Driving companywide engineering initiatives, especially regarding cloud strategy and remote work.

People Management

Architecture

Ruby on Rails

React

Javascript

PHP

nodejs

AWS

Tech Lead

XING SE

12/2015 - 12/2017

Technical responsibility, quality assurance and hands-on development for a product. Technical lead for up to 10 Backend-, Frontend- and QA-Engineers on side and in remote locations. Coaching of the engineers.

Architecture

Ruby on Rails

React

Javascript

HTML/CSS

Senior Developer

Dynport GmbH

07/2013 - 10/2015

Development of mobile Apps for android and iOS, Development of Web applications in Ruby, Development of a Data-aggregation system in Ruby and Go, Concept and implementation of software architecture, coaching and consulting of developers.

Architecture

Ruby on Rails

Objective-C

Java

Android

Spring Boot

HTML/CSS

Freelance Developer

01/2012 - 12/2013

Development of Webapplications and API's with Ruby on Rails, mobile crossplatform applications for iOS and Android, Servermanagement, project and usability consulting.

Architecture

Ruby on Rails

NodeJS

Objective-C

PHP

Appcelerator Titanium

Javascript

HTML/CSS

Software Engineer

Plutex GmbH

04/2011 - 07/2013

Development of internal Software for management, booking, billing, monitoring and automatisation of a small data center. Development of Customer Frontend. Integration of several APIs (Cacti, Radius...) and of external providers (Domain Registrars, Accounting, Banking...)

Ruby on Rails

Javascript

HTML/CSS

University of Bremen - Computer Science

10/2007 - 07/2013

I studied Computer Science at the University of Bremen and graduated with a Diploma. During my studies I concentrated on practical projects in different technologies.

Java

Ruby on Rails

Javascript

HTML/CSS

Objective-C

Open Source

I maintain small libraries that are free to use and open source.
Have a look at my GitHub.

trial/assert

trial/assert is a simple assertion library for go giving convenience and nice error messages for productive work.

schema

schema makes it easier to check if map/array structures match a certain schema. Great for testing JSON API's or validating the format of incoming requests and providing error messages to the api user.

configurate

configurate is a simple configuration library. It can load from JSON files, OS Environment, accepts defaults and can report required values missing. It can easily be extended to access other sources like consul.

attributed_object

AttributedObject gives easy, dependency free attributes to objects making sure the interface is clean. It behaves largely like named arguments. Its possible to have disallowed values, simple, strict typechecking and default values.