Jewgenij (Jeff) Steinhart
Mobile Engineer
Erfahrungen
Mobile Engineer
ginlo.net Gesellschaft für Datenkommunikation mbH
Development of the ginlo Messenger client, emphasizing stringent data protection compliance as mandated by German legislation.
Technologies: Flutter, Dart, Swift, Kotlin
Full Stack Development
The Mobility House GmbH
- Development of a Mobile App for Smart Charging of Electric Vehicles
- Agile Development in a Cross Functional Team
- Frontend Development and Deployment of a Multi-Platform Flutter Application
- Backend Development in a Microservice Architecture
- Improvements in Customer Journey from Registration throughout all Stages of Interactions with the App
Technologies: Backend: Nest.js, Typescript, Microservices, Docker, AWS Frontend: Flutter, Dart, Swift, Kotlin, MobX, getIt, mockito
Backend + Frontend Development
typedigital
- Implementing new Application
- User Notifications via WebSocket
- Appointments and Calendar Features
- New UI with Native Base and Storybook
- Implementing Backend APIs and Database Models
Technologies: Backend: Node.js, Express Server, GraphQL, TypeORM, Prisma ORM, PostgreSQL Frontend: React.js, React Native, Storybook, Native Base UI Components
Volunteer Teacher
ReDi School of Digital Integration
Teaching Technologies to Students with migrant background
Technologies: JavaScript, CSS, HTML, Frontend Lego Mindstorms Robots Programming Python block coding with edublocks.org
Development, Quality Management
Porta Möbel / foobar Agency
- Testing strategy development
- Components implementation
- On-site search improvement with Algolia
- Features for product promotion
Technologies: React.js, Next.js, Typescript, Contentful, AlgoliaSearch, Cypress testing framework, Github Actions
Development, Quality Management
Porta Möbel / foobar Agency
- Testing strategy development
- Components implementation
- On-site search improvement with Algolia
- Features for product promotion
Technologies: React.js, Next.js, Typescript, Contentful, AlgoliaSearch, Cypress testing framework, Github Actions
Full Stack Developer
foobar Agency
- Components implementation
- CMS Api consumer implementation
- Knowledge transfer, new developer onboarding
- Best practice establishment
- Technology experimentation
Technologies: React.js, Next.js, Typescript, Contentful CMS, Github, Figma, RESTful API
Full Stack Developer
Mayflower GmbH
- Implement Software for Digital Conferencing
- Implementing Logic and Layout for different formats of Conference Sessions
Technologies: Javascript, TypeScript, React.js, Redux, GatsbyJS, Docker, Jenkins, Janus WebRTC Server
Full Stack and Mobile Engineer
Stealth Startup
- Cross-Platform App for streaming smartphone display to E-Book Readers Amazon Kindle und Kobo
- Image optimizations for black/white E-Ink Screens
- Performance enhancing for lag free picture streaming
Technologies: Flutter, Dart, Android Kotlin+Java, Javascript, Websockets, Dart Web Server, Media Streaming, Python and Machine Learning
Volunteer Teacher
ReDi School of Digital Integration
Teaching Technologies to Students with migrant background
Technologies: JavaScript, CSS, HTML, Frontend Lego Mindstorms Robots Programming Python block coding with edublocks.org
Software Engineer Frontend
Media-Saturn IT-Services GmbH
- New Shop basket technology
- Checkout Process upgrade
- Api migration to GraphQL
Technologies: Typescript, React.js + Hooks, GraphQL, Apollo, Flutter Storybook, Swagger
Software Engineer
weeConomy AG
- Software design and development of a new frontend application for wee.com with React and Redux
- Components Implementation
- Techstack decisions
- Workflow design
- Clean code and best practices establishment
Technologies: Javascript ES6, React.js, Redux, Flow-typing, Restful Backend API, Swagger, Jenkins
Entrepreneur in Residence, Participant
Entrepreneur First
- Startup Ideas Research
- Prototyping
Technologies: Lean Startup, Design Thinking, Javascript, Blockchain
Blockchain Engineer
Blockshifters GmbH
- Development of the decentralised Cryptoassets trading platform CryptoBridge
- Integration of Ethereum and Erc20 Assets
- Development of Wallets for Deposits of Ethereum Based Assets
- Development of the Software Architecture supporting Ethereum Blockchain on the Exchange
- Establishment and Securing of Cold and Hot Wallets
Technologies: Ethereum, Web3.js, Bitcoin, Typescript, Node.js, Docker, AWS Cloud
Full Stack Web Developer
SinnerSchrader AG
- Further development of Volkswagen's Car Configurator
- Integration of new APIs
- Styling of the components
- Adaptation of the Business logic to changed legal requirements
- Visualisation of the Emi Rating for clients
Technologies: React.js, Redux, Typescript, Patternplate
Full Stack Web Developer
DriveNow GmbH & Co. KG
- Development of a building blocks system for landing page for the department of performance marketing
- Further development of the drive-now.com website in Responsive Design
- Extension of the software middle Layer (Restful API) in Go programming language
- Coordinating requirements with stakeholders from product and marketing
Technologies: React.js, Redux, Flow, Javascript (ES6, isomorphic), Go (Golang), GraphQL, Unit Testing, Flexbox, Drupal, Webpack, Git
Full Stack Web Developer
Xing AG
- Support of Frontend Architecture and Messenger teams
- Further development of the UI style guide
- Creation of Responsive Gui components with React
- Further development of internal software libraries and tools
- Consultation with stakeholders
Technologies: JavaScript (ES6), React.js, Redux, Ruby on Rails, Unit Testing, Git
Full Stack Web Developer
Maxdome GmbH / ProSiebenSat.1 Media SE
- Relaunch of the Maxdome Platform
- Implementation of New Responsive UI
- Migration of Legacy Code
- Realisation of a Service-Oriented Architecture
Technologies: React.js, Redux, Javascript (ES6, ES5), Symfony2 Framework, PHP, Redis, Node.js, Unit Testing, Git, Jenkins, AWS Cloud
Full Stack Web Developer
WEKA FACHMEDIEN GmbH
- Further development of the editorial backend for connect.de and pc-magazin.de
- Support of editors in the merger of two legacy editorial systems
- Implementation of multi role capability of the editorial system / split features
- Specification and implementation of feature requests for stakeholders from editorial departments
Technologies: Zend Framework, PHP, MySQL, JavaScript, jQuery, proprietary CMS