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Jewgenij (Jeff) S.

Mobile Engineer

Munich, Germany

Experience

Apr 2024 - Jul 2024
4 months
Germany

Mobile Engineer

ginlo.net Gesellschaft für Datenkommunikation mbH

  • Development of the ginlo Messenger client (ginlo messenger project), emphasizing stringent data protection compliance as mandated by German legislation.
  • Technologies: Flutter, Dart, Swift, Kotlin.
Aug 2023 - Mar 2024
8 months
Germany

Full Stack Development

The Mobility House GmbH

  • Development of a Mobile App for Smart Charging of Electric Vehicles (eyond project).
  • 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.
Oct 2022 - Feb 2023
5 months

Backend + Frontend Development

typedigital

  • Implementing new Application (Lern-Fair project).
  • 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.
May 2022 - Present
3 years 8 months
Munich, Germany

Volunteer Teacher

ReDi School of Digital Integration

  • Teaching Technologies to Students with migrant background (Frontend Technologies, Coding and Robotics for Kids project).
  • Technologies taught: JavaScript, CSS, HTML, Frontend, Lego Mindstorms Robots Programming, Python block coding.
Sep 2021 - Jun 2022
10 months
On-site

Development, Quality Management

Porta Möbel / foobar Agency

  • Testing strategy development (Onlineshop project).
  • 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.
Feb 2021 - Apr 2021
3 months
On-site

Development, Quality Management

Porta Möbel / foobar Agency

  • Testing strategy development (Onlineshop project).
  • 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.
Nov 2020 - Mar 2021
5 months

Full Stack Developer

foobar Agency

  • Components implementation (foobar Agency Website project).
  • 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.
May 2020 - Aug 2020
4 months
Munich, Germany

Full Stack Developer

Mayflower GmbH

  • Implement Software for Digital Conferencing (Video Conferencing Platform (bits & pretzels) project).
  • Implementing Logic and Layout for different formats of Conference Sessions.
  • Technologies: Javascript, TypeScript, React.js, Redux, GatsbyJS, Docker, Jenkins, Janus WebRTC Server.
Feb 2020 - May 2020
4 months

Full Stack and Mobile Engineer

Stealth Startup

  • Cross-Platform App for streaming smartphone display to E-Book Readers Amazon Kindle and Kobo (StreamInk project).
  • 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.
Jan 2020 - Apr 2020
4 months
Munich, Germany

Volunteer Teacher

ReDi School of Digital Integration

  • Teaching Technologies to Students with migrant background (Frontend Technologies, Coding and Robotics for Kids project).
  • Technologies taught: JavaScript, CSS, HTML, Frontend, Lego Mindstorms Robots Programming, Python block coding.
Jul 2019 - Nov 2019
5 months
Munich, Germany

Software Engineer Frontend

Media-Saturn IT-Services GmbH

  • New Shop basket technology (Black Friday Checkout process updates project).
  • Checkout Process upgrade.
  • Api migration to GraphQL.
  • Technologies: Typescript, React.js + Hooks, GraphQL, Apollo, Flutter Storybook, Swagger.
Dec 2018 - May 2019
6 months
Munich, Germany

Software Engineer

weeConomy AG

  • Software design and development of a new frontend application for wee.com with React and Redux (Retail Cashback project).
  • 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.
Oct 2018 - Nov 2018
2 months

Entrepreneur in Residence, Participant

Entrepreneur First

  • Startup Ideas Research (Startup Company Builder project).
  • Prototyping.
  • Technologies and methods: Lean Startup, Design Thinking, Javascript, Blockchain.
Feb 2018 - Aug 2018
7 months
Munich, Germany

Blockchain Engineer

Blockshifters GmbH

  • Development of the decentralised Cryptoassets trading platform CryptoBridge (Crypto-Bridge project).
  • 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.
Nov 2017 - Feb 2018
4 months
Hamburg, Germany

Full Stack Web Developer

SinnerSchrader AG

  • Further development of Volkswagen’s Car Configurator (VW Car Configurator project).
  • 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.
May 2017 - Aug 2017
4 months
Munich, Germany

Full Stack Web Developer

DriveNow GmbH & Co. KG

  • Development of a building blocks system for landing page for the department of performance marketing (DriveNow Landing Page Builder project).
  • 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.
Oct 2016 - Dec 2016
3 months
Hamburg, Germany

Full Stack Web Developer

Xing AG

  • Support of Frontend Architecture and Messenger teams (Atomic Style Guide project).
  • 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.
Nov 2015 - Jun 2016
8 months
Unterföhring, Germany

Full Stack Web Developer

Maxdome GmbH / ProSiebenSat.1 Media SE

  • Relaunch of the Maxdome Platform (Platform Relaunch/Redesign project).
  • 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.
Jan 2015 - Jun 2015
6 months
Haar, Germany

Full Stack Web Developer

WEKA FACHMEDIEN GmbH

  • Further development of the editorial backend for connect.de and pc-magazin.de (New Editorial Backend project).
  • 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.

Summary

As a seasoned senior software engineer, I excel in crafting sophisticated applications for both web and mobile platforms. My proficiency spans across the modern Full Stack JavaScript ecosystem — encompassing React.js, TypeScript, and Node.js — complemented by my expertise in Flutter with Dart for compelling cross-platform mobile app development.

With a deep understanding of Agile and Scrum methodologies, I flourish in team environments, championing collaboration and efficiency. My comprehensive skill set equips me to address a broad spectrum of development challenges with confidence and expertise.

Languages

German
Native
Russian
Native
English
Advanced
Ukrainian
Elementary

Education

Oct 2002 - Sep 2007

Augsburg University of Applied Sciences

Diploma in Business Information Systems · Business Information Systems · Augsburg, Germany

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