Markus Sterner-Full Stack Developer
Check rate
Experience
Lead Developer
Endress+Hauser SICK GmbH+Co. KG
Lead developer of the frontend and backend systems for a web-based pre-sales tool. It is used by sales staff and engineers to configure and calculate complex measurement systems for industrial customers. Core features include a collaboration platform, a product configurator, physical feasibility checks, and a PDF generator.
TypeScript · Node.js · Nest.js · Angular · REST · MongoDB · Playwright
Full Stack Developer
MediaMarktSaturn Retail Group GmbH
Development and maintenance of the third-party platform behind the online shops of MediaMarktSaturn.
- Part of a team responsible for 16 microservices and 2 frontends.
- The services run for ten European marketplaces.
- The marketplace generated around €800 million in GMV in fiscal year 2025/26.
TypeScript · Node.js · Nest.js · React · GraphQL · REST · PubSub · BullMQ · MongoDB · GCP
Backend Developer
Seven.One Entertainment Group GmbH
Development and maintenance of more than 15 microservices in the area of content discovery for the streaming platform Joyn.
TypeScript · Node.js · GraphQL · REST · AWS · Kafka · MongoDB
Lead Developer
SICK AG
Development and maintenance of the frontend and backend of an internal web application. Built the end-to-end test framework, optimized the CI pipeline, and worked on UI/UX concepts and defining user stories.
TypeScript · Node.js · Nest.js · Angular · REST · AWS · Terraform · MongoDB · E2E Testing · CI/CD
Lead Frontend Developer
Kaiser X Labs GmbH
Technical lead of the frontend development of an internal web application for Allianz Global Investors. Development of UI components and connection to the API, major contribution to the technical product strategy and the refinement of user stories, as well as architectural support for backend developers.
TypeScript · Angular · REST · Azure · Software Architecture
Co-Founder & CTO
Nomizz GmbH
Founded the company together with a business partner to build a SaaS application for machine builders and their customers. Built the prototype, hired a Full Stack Developer, and led product development as Product Manager and Developer. In March 2022, 84 registered users from 10 companies were using the platform. Left after a funding round did not come through.
TypeScript · React · Next.js · Node.js · GraphQL · REST · Azure · Auth0
Full Stack Developer
SICK AG
Worked with the customer to develop the product vision for an internal collaboration tool, created user stories as well as UX and UI concepts, designed the system architecture, and developed the frontend application and backend services.
TypeScript · Angular · Node.js · GraphQL · REST · Software Architecture
Full Stack Developer
MediaMarktSaturn Retail Group
Developed and maintained the frontend application and a backend system for the shopping cart product team. Worked on strategies to improve product KPIs, drove an automated end-to-end testing strategy, aligned development strategy and system architecture with other product teams, and built reusable frontend components.
TypeScript · React · Styled Components · Node.js · GraphQL · REST · GCP · E2E Testing · Software Architecture
Lead Developer
Fineway GmbH
Lead developer in a team of four developers and one Product Owner. Developed and maintained frontend and backend systems for customer-facing and internal web applications, and designed a microservice architecture to aggregate, transform, and store data from different sources.
TypeScript · React · Styled Components · GraphQL · REST · Node.js · Python · Redis · PostgreSQL · Docker · Azure · Software Architecture
Previous Projects
Colenet, Allianz Deutschland, Scandio
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Manufacturing, Information Technology, Retail, Insurance, Banking and Finance, and Tourism.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Quality Assurance, Strategy, Sales, and Project Management.
Summary
Software development is my passion. It gives me great satisfaction to deliver clean code, a smart architecture, and a flawless user experience for my clients.
Thanks to my willingness to learn and my curiosity about the unknown, I have been able to build up valuable experience through many client projects. This knowledge allows me to find my way quickly in new software projects and become productive fast. By using AI tools, I can use this knowledge even faster and more effectively for my clients than before.
With my entrepreneurial mindset, I do not focus only on the tasks given to me, but also question them in a targeted way whenever I see the potential for a better solution for my clients.
Skills
- Typescript
- Node.Js
- React
- Rest
- Angular
- Graphql
- Ci/Cd
- Automated Tests
- Product Development
- Ai Tools
Languages
Education
Ludwig-Maximilians-Universität München
B.A. · Media Informatics · Munich, Germany
Certifications & licenses
Advanced Certified Scrum Developer
Scrum Alliance
Scrum Alliance
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Markus is based in Herrsching, Germany.
Markus speaks the following languages: German (Native), English (Advanced).
Markus has at least 11 years of experience. During this time, Markus has worked in at least 6 different roles and for 9 different companies. The average length of individual experience is 1 year and 1 month. Note that Markus may not have shared all experience and actually has more experience.
Based on recent experience, Markus would be well-suited for roles such as: Lead Developer, Full Stack Developer, Backend Developer.
Markus's most recent position is Lead Developer at Endress+Hauser SICK GmbH+Co. KG.
In recent years, Markus has worked for Endress+Hauser SICK GmbH+Co. KG, MediaMarktSaturn Retail Group GmbH, Seven.One Entertainment Group GmbH, SICK AG, and Kaiser X Labs GmbH.
Markus is most experienced in industries like Manufacturing, Information Technology, and Retail. Markus also has some experience in Insurance, Tourism, and Banking and Finance.
Markus is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Markus also has some experience in Strategy, Sales, and Project Management.
Markus has recently worked in industries like Manufacturing, Retail, and Banking and Finance.
Markus has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.
Markus holds a Bachelor in Media Informatics from Ludwig-Maximilians-Universität München.
Markus has 2 certificates. These include: Advanced Certified Scrum Developer and Certified ScrumMaster.
Markus will be available from September 2026.
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 6 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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