Khalit Hartmann
Freelance Flutter Developer | Consultant
Transforming ideas into exceptional mobile experiences with cutting-edge technologies
Get in TouchAbout Me
As a Senior Mobile Software Engineer with over 5 years of experience, I specialize in creating efficient, scalable, and user-friendly mobile applications using Flutter, Dart, and React Native. My expertise extends to full-stack development, ensuring seamless integration between front-end and back-end systems.
My approach to software development is guided by Henry Ford's wisdom: "Quality means doing it right when no one is looking." This dedication to excellence drives me to deliver top-notch results that exceed client expectations. Whether it's optimizing app performance, implementing complex features, or leading development teams, I bring a blend of technical prowess and strategic thinking to every project.
Skills & Expertise
Programming Languages
- Dart
- TypeScript
- JavaScript
- Python
- Java
Frameworks & Tools
- Flutter
- Firebase
- CI/CD
- REST APIs
- Google Analytics
- Sentry
- GraphQL
- React Native
- Strapi
- JAM Stack
- Unity
Professional Skills
- Mobile App Development
- Team Leadership
- Architecture
- Agile Methodologies
- Feature Implementation
- App Optimization
- Cross-functional Collaboration
- Problem Solving
- Technical Communication
- Project Management
- Growth Hacking
- Data Analysis
- Machine Learning
Work Experience
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Freelance Team Lead - Mobile App Development
SnapNext GmbH | 01.08.2024 - Present
Led a team of two mobile developers to implement new features and maintain Homodea's 2 Apps. Achieved a 90% increase in daily subscriptions within three months. Implemented in-app messaging, notifications, and promotions. Integrated Maestro for automated testing and resolved over 70 support tickets.
Freelance App Developer
On AG | 01.03.2024 - 01.08.2024
Spearheaded the Co-Pilot initiative within the ON App, integrating advanced AI features to enhance user experience. Led strategic development and collaborated with cross-functional teams.
Freelance App Developer
Roodie Health GmbH | 01.10.2023 - 01.03.2024
Implemented and maintained new features of the Roodie Health App. Ensured code cleanliness and worked closely with the client.
Experienced Flutter Engineer
MediaMarkt Saturn Technology GMBH | 15.09.2022 - 29.02.2024
Implemented new features for MediaMarkt and Saturn Apps across various sales lines. Worked in a team of over 30 individuals. Optimized CI/CD pipelines and deployed apps.
Freelance App Developer
FRAMEGRABBER Medien GmbH | 01.10.2021 - 01.07.2022
Implemented two media guide Apps - DA Kunsthaus KinderSpiel and DA Kunsthaus Geschichte. Designed and developed Apps with interactive location-based features.
Freelance App/Web Developer
SNAPNEXT GMBH | 01.06.2020 - 01.09.2021
Implemented mobile and web applications for different clients including Mein Orthomol and Orthomol-Virtuelle Apotheke mobile apps, TetraPak Mosaik and Tetrapak WEIHNACHTS-ORCHESTER web apps, and maintained the EFFZEH 360 Unity App.
Freelance App Developer
TRIPPLE-A-CODE GMBH | 15.01.2020 - 01.06.2020
Developed the Holoswitch - Take your phone to Virtual Reality App and set up a Bitbucket CI/CD pipeline.
Team Lead/App Developer
PEQAS GMBH | 01.11.18 - 01.01.2020
Led a team of 5 part-time developers and one designer to work on a cross-platform mobile application from scratch. Set up different environments, Travis CI/CD pipelines, and AWS servers.
Working Student - Data Scientist
DAI-Labor – Distributed Artificial Intelligence Laboratory | 01.03.2018 - 01.11.2018
Worked on an event-based recommender system for Realeyz GmbH in collaboration with EYZ-Media GmbH. Designed and developed an intelligent system to recommend movies based on relevant world events.
Featured Projects
Education
B.Sc. in Computer Science (Informatik)
Technical University of Berlin
Graduated in 2021