Dennis O.-Lead Software Engineer
Check rate
Experience
Lead Software Engineer
Heinemann
- Led a team of four developers in a comprehensive rewrite of the Heinemann iOS app, successfully navigating a highly undocumented software environment.
- Implemented a frontend-first approach by adopting the backend-for-frontend (BFF) pattern, enabling frontend developers to lead API specification development for enhanced alignment and efficiency.
Lead Software Engineer
Volkswagen
- Led end-to-end development of the public charging module for the Volkswagen ID iOS app, used by hundreds of thousands of electric vehicle owners across Europe.
- Architected and implemented critical features enhancing user experience and app functionality:
- Voucher system
- Plug and Charge capability
- Tariff model
Software Engineer
IBM / Barmer
- Served as the founding software architect for the Barmer eCare iOS app, overseeing its development until the mandatory initial release in 2021 in compliance with new legal requirements.
- Implemented highly regulated features in the electronic patient file (ePA), ensuring adherence to strict healthcare regulations and standards.
Product Lead
Mercedes-Benz.io / TLGG
- Led the conceptual development of the project, drawing inspiration from the independent project bbybike.
- Recruited and managed the development team, successfully developing the app and navigating Daimler’s internal review processes.
- Transitioned the team and product from the initial consulting company (TLGG) to Mercedes-Benz, ensuring seamless continuity and integration.
Head of Mobile
Pantaflix
- Initiated and architected a new VoD mobile app, incorporating features such as DRM, video renting, and offline DRM playback.
- Led hiring efforts to expand the mobile team, successfully onboarding Android and FireOS developers.
- Co-designed the UX/UI language of the app, ensuring a user-friendly and cohesive experience across all platforms.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Automotive, Retail, Healthcare, Insurance, and Media and Entertainment.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology and Product Development.
Summary
I am a highly accomplished software engineer and product leader with over a decade of experience in the tech industry. My expertise spans mobile and web development, product design, and team leadership.
With a proven track record of success in both consulting roles and as an independent app developer, I bring a unique blend of technical proficiency and entrepreneurial spirit to every project.
Skills
- Leadership: Team Lead, Management Consultant, Product Development, Product Design, Ux/Ui Design
- Project Management: Agile, Scrum (Scrum Master), Kanban
- Business Skills: Business Development, Pitch Deck Creation, Concept Writing
- Programming Languages: Swift, Objective-C, Kotlin, Go (Golang), Typescript, Python
- Mobile & Web: Apple Platforms (Uikit, Appkit, Swiftui), Vue.Js
- Backend & Devops: Postgresql, Redis, Meilisearch, Docker, Git/Github, Continuous Integration (Ci), Google Cloud Platform (Gcp)
- Maschine Learning: Pytorch, Pandas, Tensorflow
Languages
Statistics
Experience
Expertise
Profile
Frequently asked questions
Have questions? Find more information here.
Dennis is based in Berlin, Germany.
Dennis speaks the following languages: German (Native), English (Advanced).
Dennis has at least 8 years of experience. During this time, Dennis has worked in at least 4 different roles and for 5 different companies. The average length of individual experience is 2 years and 7 months. Note that Dennis may not have shared all experience and actually has more experience.
Based on recent experience, Dennis would be well-suited for roles such as: Lead Software Engineer, Software Engineer, Product Lead.
Dennis's most recent position is Lead Software Engineer at Heinemann.
In recent years, Dennis has worked for Heinemann, Volkswagen, and IBM / Barmer.
Dennis is most experienced in industries like Automotive, Retail, and Healthcare. Dennis also has some experience in Insurance and Media and Entertainment.
Dennis is most experienced in business areas like Information Technology and Product Development.
Dennis has recently worked in industries like Retail, Automotive, and Healthcare.
Dennis has recently worked in business areas like Information Technology and Product Development.
The availability of Dennis needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
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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