Profileimage by Martin Rehder Java Backend and Mobile Developer / Software Architect from Flensburg

Martin Rehder

partly available

Last update: 06.09.2022

Java Backend and Mobile Developer / Software Architect

Graduation: Master of Science
Hourly-/Daily rates: show
Languages: Danish (Native or Bilingual) | German (Native or Bilingual) | English (Full Professional) | French (Elementary)

Attachments

Profil-DE-SA.pdf
Profil-EN-SA.pdf

Skills

I am used to work on large projects and in an agile development environment. My main experience is on Java backend and full stack iOS development. With twenty years experience in Java development and ten years in iOS development. I have a solid knowledge in Java EE and in the last two years I have primarily used Java micro services with Spring Boot.

My favourite project is a highly distributed backend system with messaging and RESTful interfaces. A bonus would be to be able to use my mobile development experience as well.

Since 2006 I have worked with agile methodologies, primarily with Scrum. I took a Scrum Master certification and have Scrum Master experience from various projects since 2008. I do prefer to be part of the development and as such I like the mixed developer / Scrum Master role.

Regarding technology and implementation, I was considered the “go-to-guy” from my team members in recent years. I am always open for questions and suggestions. I believe in team work and shared responsibility and if I spot communication or other issues within the team, then I will try to resolve those problems.

I work best in teams applying clean code principles with continuous integration and delivery. When a team is not experiences in this, then I will work on sharing my knowledge and lead by example.
 

Project history

09/2019 - 04/2020
Development and support of a CMS and mentoring
Signal Iduna (Insurance, >10.000 employees)

Digitization of internal processes, code reviews, introduction of clean code principles, mentoring, development and further development of the intranet (CMS), support. A relatively young team was coached to mature development work and support within the company's intranet. In addition, migration from monolithic to microservices systems.

Teaching the other project participants by conducting a course in Microservices, RESTful technologies and principles.
 


04/2019 - 09/2019
Integration of a cloud based planning system
AU-IT (Aarhus University DK, IT Dept.) (Other, 1000-5000 employees)

The integration of a new cloud-based system with more than 20 existing systems from the University of Aarhus in Denmark was performed in the role of integrator and Java software developer with knowledge of RESTful Microservices and the OpenAPI standard. Teach the other project participants by holding a course in RESTful technologies and principles.


01/2019 - 04/2019
Microservices technology demonstration system
Rehsco (Internet and Information Technology, < 10 employees)

A system for uploading and processing images and data has been created for demonstration purposes at conferences, trainings and lectures. The front-end is a Java, iOS and macOS client.
The backend is a media server consisting of Java Micro Services and a MongoDB database.
The communication is encrypted and tokens are used for authentication.


06/2018 - 12/2018
Gateway for data transfer between banking systems
BankData DK (Banks and financial services, 5000-10.000 employees)

The contract included system development and support for process management, release planning and overall QA improvement.
The project had to meet a fixed deadline. The task was solved within the time frame and with the highest quality.
During the course of the project, the candidate solved some other problems and challenges beyond the role of the system designer. Among other things, there were retrospectives and daily scrums, introduction and maintenance of release procedures as well as commit and review strategies.

An important part of the task for the candidate was code reviews of the entire code base and in particular code review of the security of the data transfer.


03/2008 - 06/2018
Big Data / Mobile communication platform and messaging server
Liace ApS (Internet and Information Technology, 50-250 employees)

Various projects as senior software architect, including teachning and mentoring of domestic and foreign developers.

Typical Projects were:

Big Data
Integration with different data sources and optimization of the data indexing for a fast free text search.

Mobile Project
The project included two products. An eGovernment system for secure communication and provision of the communication server to the customer. The second system is for the mass market (App Store, Google Play Store) with a self-hosted communication server.


Local Availability

Only available in these countries: Germany
Until the end of this year, I am available 1 day a week for small projects, coaching, mentoring, etc.
Profileimage by Martin Rehder Java Backend and Mobile Developer / Software Architect from Flensburg Java Backend and Mobile Developer / Software Architect
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