Peter M.-Backend Engineer
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Experience
Backend Engineer
sonnen GmbH
- sonnen offers home batteries and energy contracts to provide renewable energy.
- Technologies: Ruby on Rails, PostgreSQL, Redis, GraphQL, OpenID Connect, Kubernetes.
Sabbatical
Sabbatical
- Camper tour around southern Europe with a custom-built van.
Interims Tech Lead
heyday Technologies GmbH
- heyday was a SaaS to provide benefits to employees.
- Built the initial platform, led the initial tech team and helped in finding a permanent tech lead.
- Technologies: TypeScript, NestJS, NextJS, GraphQL, PostgreSQL, Redis, Terraform, Kubernetes, FluxCD.
Co-founder and CTO
store2be GmbH
- store2be was a SaaS enabled marketplace for short term rental of retail spaces for marketing roadshows.
- Technologies: Ruby on Rails, PostgreSQL, Redis, GraphQL, TypeScript, React, Terraform, Kubernetes, Docker, Google Cloud Platform, Amazon Web Services.
Full Stack Developer
Ninja Concept GmbH
- Web development next to studies in a Ruby environment for client projects.
- Technologies: Ruby on Rails, PostgreSQL, Redis, HAML, SASS, CoffeeScript, jQuery, Bootstrap.
Full Stack Developer
GetPhoto.com fotograf.de
- First employee; worked next to studies and full time for 8 months.
- Technologies: PHP, CakePHP, PostgreSQL, Redis, JavaScript, jQuery.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Real Estate, Retail, Energy, Media and Entertainment, and Tourism.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, and Operations.
Summary
I am a software and DevOps engineer with 10+ years of professional engineering experience and 6 years of experience as a tech lead. I love building simple, maintainable and well documented solutions. My sweet spot is a tech lead position in a digital product company with backend and DevOps responsibilities.
Languages
Education
University of the Basque Country
Computer Science · Donostia-San Sebastian, Spain
Karlsruhe Institute of Technology (KIT)
Master of Science, Gamification in brand personality research · Information and Business Engineering · Karlsruhe, Germany · 1.2
Karlsruhe Institute of Technology (KIT)
Bachelor of Science, Conceptual design, development and evaluation of a web application for an assistive, intelligent Ambient · Information and Business Engineering · Karlsruhe, Germany · 1.6
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Peter is based in Kempten, Germany.
Peter speaks the following languages: German (Native), English (Advanced), Spanish (Intermediate).
Peter has at least 13 years of experience. During this time, Peter has worked in at least 5 different roles and for 6 different companies. The average length of individual experience is 2 years and 2 months. Note that Peter may not have shared all experience and actually has more experience.
Based on recent experience, Peter would be well-suited for roles such as: Backend Engineer, Sabbatical, Interims Tech Lead.
Peter's most recent position is Backend Engineer at sonnen GmbH.
In recent years, Peter has worked for sonnen GmbH and Sabbatical.
Peter is most experienced in industries like Information Technology, Real Estate, and Retail. Peter also has some experience in Energy, Media and Entertainment, and Tourism.
Peter is most experienced in business areas like Information Technology, Product Development, and Operations.
Peter has recently worked in industries like Energy and Tourism.
Peter has recently worked in business areas like Information Technology and Operations.
Peter holds a Master in Information and Business Engineering from Karlsruhe Institute of Technology (KIT) and a Bachelor in Information and Business Engineering from Karlsruhe Institute of Technology (KIT).
The availability of Peter needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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