Upgrade Post project
Profileimage by Maurice Reichelt Senior Full-stack Software Engineer from Berlin

Maurice Reichelt

Berlin
available

Last update: 14.03.2025

Senior Full-stack Software Engineer

Graduation: Fachinformatiker
Hourly-/Daily rates: show
Languages: German (Native or Bilingual) | English (Full Professional)

Keywords

Attachments

CV-Maurice-Reichelt_091024.pdf

Skills

PROFESSIONAL STATEMENT
Senior Full-stack Software Engineer of scalable web applications with single-page frontends and RESTful microservice backends. An advocate of Agile eXtreme Programming principles who delivers high-quality products using a test-first approach (TDD) and supports the Node.js stack.

KEY EXPERIENCE
- 9 years of full-time, hands-on experience in professional software development in a DevOps context
- 5 years of hands-on experience in onboarding, mentoring, and leading frontend developers
- at companies like TESLA, Merck, Mercedes, ImmoScout24, BP, Kaiser+Kraft, and Treatmind

KEY SKILLS
- FRONTEND: React, Redux, Flutter, Router, MUI, Tailwind, JavaScript, TypeScript, i18n, a11y, HTML, CSS, SSR
- BACKEND: Next.js, REST, GraphQL, Appollo, Node.js, Express, Nest.js, Swagger, Prisma, SQL, MongoDB
- TDD: Test-first Automation, Mocking, e2e Testing, Jest, Cypress, Playwright, Testing Library, Storybook
- DEVOPS: CI/CD, IaC, AWS, cfn, Jenkins, GitLab, GitHub Actions, Artifactory, Feature Toggling, Docker, Git
- AGILE: XP, Scrum, Kanban, User Stories, INVEST, Pair Programming, Peer Reviews, A/B Testing, JIRA
- LANGUAGES: English (fluent), German (native)

Project history

08/2024 - 09/2024
TrailViewr – Web app to explore and share hiking trails as 360° experiences
TrailViewr (Other, < 10 employees)
CLIENT
TrailViewr – American provider of apps for outdoor recreational activities

SKILLS
React, Remix, TypeScript, Tailwind, REST, Node, Prisma, SQLite, Playwright, Jest, GitHub Actions, Kanban

ACHIEVEMENTS & RESPONSIBILITIES
- Implemented the ability to share trail captures based on pairs of 180° videos
- Added a feature to submit issues with certain locations based on Google Plus Codes
- Applied a mobile-first approach to fix and improve several layout issues and the overall user experience
06/2024 - 09/2024
Treatmind – Web & native apps for patients suffering from borderline syndrome
Treatmind (Pharmaceuticals and medical technology, < 10 employees)
CLIENT
Treatmind – Provider of digital health apps

SKILLS
React, Next.js, TypeScript, Formik, Emotion, FeathersJS, REST, Node, Mongoose, MongoDB, Cypress, Jest, GitHub Actions, Docker, Kubernetes, Telekom Cloud, Sentry, Flutter, Dart, iOS, Android, Kanban

ACHIEVEMENTS & RESPONSIBILITIES
- Implemented and rolled out Apple and Google Store subscriptions as an additional monetization stream
- Improved the security of two native health apps according to strict legal requirements to allow a certification as Digital Health App (DiGA) by the Federal Institute for Drugs and Medical Devices (BfArM)
- Developed a new Next.js-based admin app to manage users, user consents, access codes, and to provide business insights into the usage of the app and different features
- Implemented legal requirements to make the apps compliant with federal data protection law (DSGVO)
- Improved a responsive Flutter app for iOS and Android with backend integration, offline mode, biometric security, auth & account management flows, PDF preview, file picker, notifications, and much more
- Maintained a FeathersJS- and MongoDB-bases based backend and a Next.js app for account management
11/2023 - 09/2024
Tesla – Full-stack Web App
Tesla (Automotive and vehicle construction, >10.000 employees)
CLIENT
Tesla – American automotive company producing the world’s most popular EVs

SKILLS
React, Router, TanStack Query, Express, TypeScript, Node, REST, Swagger, Prisma, Flyway, MySQL, DevOps, TDD, Jest, Testing Library, a11y, Storybook, CI/CD, GitHub Actions, Docker, Scrum

ACHIEVEMENTS & RESPONSIBILITIES
- Test-first development and delivery of accessible frontend components, scalable backend services, and database schema migrations in a team of 14 engineers and designers
- Mentoring of Junior and Mid-level developers on Software Engineering and DevOps best practices such as Clean Code, Refactoring, WiP-Limits, Peer Reviews, Pair Programming, and Test-driven development
- Introduction test automation with system, integration, component, and unit tests to avoid regression and ensure a speedy development and delivery process
- Consultation with the Product Owner on how to approach and slice requirements into good User Stories to ensure value delivery to end-users every week
07/2023 - 10/2023
Merck – Blockchain-based authentication and authorization framework
Merck (Pharmaceuticals and medical technology, >10.000 employees)
CLIENT
Merck – The world's oldest operating chemical and pharmaceutical company

SKILLS
Crypto, Blockchain, Auth, Casl, Passport, JWT, Nest.js, Express, TypeScript, Node, REST, Swagger, Mongoose, MongoDB, TDD, Jest, CI/CD, Docker, Azure DevOps, Kanban

ACHIEVEMENTS & RESPONSIBILITIES
- Development and delivery of scalable microservices that provide secure and auditable authentication and authorization to 3rd-party system
- Introduction of test automation with system, integration, and unit tests to avoid regression and ensure a speedy development and delivery process
04/2023 - 06/2023
Mercedes – Web app to track and manage formula 1 races and driver standings
Mercedes (Automotive and vehicle construction, >10.000 employees)
CLIENT
Mercedes – German luxury and commercial vehicle automotive brand

SKILLS
React, TanStack, Tailwind, i18next, TypeScript, GraphQL, Apollo, MongoDB, TDD, Vitest, Testing Library, Playwright, Storybook, Docker, GitHub Actions, GitLab, Kanban

ACHIEVEMENTS & RESPONSIBILITIES
- Developed a responsive web app on a Greenfield to follow races of different Formula series live
- Gathered and acted on feedback from early end-users and testers, including the world’s best Formula
drivers and teams
10/2022 - 03/2023
Kaiser+Kraft – E-commerce platform for office and warehouse supplies
Kaiser+Kraft (Consumer goods and retail, 500-1000 employees)
CLIENT
Kaiser+Kraft –Business equipment wholesaler serving the European market

SKILLS
React, Redux, Router, Next.js, Styled Components, TypeScript, i18n, REST, Knex, PostgreSQL, SSR, TDD, Jest, Cypress, Testing Library, Storybook, CI/CD, AWS, CDK, GitHub Actions, Artifactory, Docker, Scrum

ACHIEVEMENTS & RESPONSIBILITIES
- Improved the React- and Redux-based app while satisfying numerous country-specific requirements
- Spearheaded an initiative to reduce the runtime of the platform’s test suite from hours to minutes by introducing integration and unit tests and coaching the team on how to best leverage different test types
01/2022 - 02/2023
BP – Implementing a SaaS application to roll out price changes at petrol stations
BP (Energy, water and environment, 1000-5000 employees)
CLIENT
BP –One of world's seven oil and gas "supermajors"

SKILLS
React, Redux, Router, MUI, TypeScript, a11y, REST, Node, Express, Swagger, MySQL, TDD, Jest, Cypress, Testing Library, Storybook, CI/CD, Azure DevOps, Scrum
ACHIEVEMENTS & RESPONSIBILITIES
- Implemented a 3-tier React application using Redux and Thunks to separate central state management, asynchronous processes, and presentation
- Coached a team on how to write frontend component tests and integrated Jest and React Testing Library into the Azure-based continuous integration pipeline
- Introduced a Storybook to enable efficient development of Material-UI-based frontend components and eliminated the need to waste precious developer time on waiting for the application to reload
- Increased the throughput of delivered User Stories by re-focussing the team and stakeholders on Agile principles and practices, which ultimately led to higher satisfaction and confidence among team members
07/2019 - 12/2021
ImmoScout24 – Subscription-based online-service to streamline the process of buying a house
ImmoScout24 (Internet and Information Technology, 500-1000 employees)
CLIENT
ImmoScout24 – Germany's leading online marketplace for real estate

SKILLS
React, Preact, Redux, Router, JavaScript, TypeScript, i18n, a11y, REST, Node, Serverless, Express, Swagger, RDS, MySQL, DynamoDB, TDD, Jest, Cypress, Codecept, Playwright, Enzyme, Testing Library, Storybook, CI/CD, AWS, CloudFormation, Jenkins, Recharts, Less, Google Maps, Kanban

ACHIEVEMENTS & RESPONSIBILITIES
-  Developed a suite of premium web application products and helped grow the revenue from 1.3M EUR in the first year to 6.7M EUR in the second year (based on 20,000 paying subscribers)
- Onboarded and mentored 3 Junior Developers and led a team of 5 frontend engineers to become the „best-organized team,“ according to the Head of Technology
- Coordinated other team’s contributions and coached their team members on how to write clean code and good tests and how to develop components in isolation with a Storybook
- Reduced the runtime of the test suite from 25 minutes to under 10 minutes by identifying and working around performance bottlenecks in the React Testing Library and by refactoring bad code into clean code
- Inherited a legacy project with outdated code that needed urgent adjustments and improved the code quality and coverage from 50% to 90% over the course of 3 months
- Took over Product Ownership during the Product Owner’s scheduled absence
12/2019 - 03/2020
ImmoScout24 – React component library, driving the most comprehensive redesign in client’s history
ImmoScout24 (Internet and Information Technology, 500-1000 employees)
CLIENT
ImmoScout24 – Germany's leading online marketplace for real estate

SKILLS
React, Preact, Redux, Router, JavaScript, TypeScript, i18n, a11y, REST, Node, Serverless, Express, Swagger, RDS, MySQL, DynamoDB, TDD, Jest, Cypress, Codecept, Playwright, Enzyme, Testing Library, Storybook, CI/CD, AWS, CloudFormation, Jenkins, Recharts, Less, Google Maps, Kanban


ACHIEVEMENTS & RESPONSIBILITIES
- Developed and supported the rollout of a component library that built the foundation for the most comprehensive rebranding and redesigns in the client’s 20-year history – a multi-million EUR initiative affecting 1,500 employees and hundreds of thousands of daily visitors
10/2018 - 03/2019
ImmoScout24 – Dashboard to manage mortgage
ImmoScout24 (Internet and Information Technology, 500-1000 employees)
CLIENT
ImmoScout24 – Germany's leading online marketplace for real estate

SKILLS
React, Preact, Redux, Router, JavaScript, TypeScript, i18n, a11y, REST, Node, Serverless, Express, Swagger, RDS, MySQL, DynamoDB, TDD, Jest, Cypress, Codecept, Playwright, Enzyme, Testing Library, Storybook, CI/CD, AWS, CloudFormation, Jenkins, Recharts, Less, Google Maps, Kanban

ACHIEVEMENTS & RESPONSIBILITIES
- Developed a responsive web application to gain insights into a user’s mortgage needs over time
- Helped the client to get back in touch with their „lost“ leads (previously sold to partners) and thus significantly increased the customer lifetime value for the client
- Developed a responsive dashboard with interactive custom pie, bar, and line charts using Recharts
- Implemented React components with a clean interface and local state, which are easily integrated into the dashboard and positioned with a Bootstrap-like library
- Maintained an Express-based mock API to allow local development of the React application
10/2018 - 02/2019
ImmoScout24 – Real estates search engine for private investment opportunities
ImmoScout24 (Internet and Information Technology, 500-1000 employees)
CLIENT
ImmoScout24 – Germany's leading online marketplace for real estate

SKILLS
React, Preact, Redux, Router, JavaScript, TypeScript, i18n, a11y, REST, Node, Serverless, Express, Swagger, RDS, MySQL, DynamoDB, TDD, Jest, Cypress, Codecept, Playwright, Enzyme, Testing Library, Storybook, CI/CD, AWS, CloudFormation, Jenkins, Recharts, Less, Google Maps, Kanban

ACHIEVEMENTS & RESPONSIBILITIES
- Developed an accessible React web application to find apartments or houses as private investment and integrated 6 APIs of 3 different data providers
- Features included: a search with auto-completion, filters, an innovative rating score, Google Maps integration, exposé with carousel gallery, a shortlist, and a profitability calculator
05/2018 - 09/2018
traffics – White-label travel search engine
traffics (Internet and Information Technology, 50-250 employees)
CLIENT
traffics – Leading provider of booking systems driving 1.3 bn euros in annual revenue

SKILLS
Vue, JavaScript, HTML, CSS, Jenkins, Node, Swagger, Express, TDD, Scrum

ACHIEVEMENTS & RESPONSIBILITIES
- Developed next version of a white-label travel search engine including versatile filtering options
02/2018 - 05/2018
casenio – Smart home solution for people with special needs
casenio (Internet and Information Technology, 10-50 employees)
CLIENT
casenio – Provider of a smart home solution for people with special needs

SKILLS
React, Redux, Bootstrap, JavaScript, SCSS, TDD, Enzyme, Protractor, Express, Mongoose, MongoDB, XP


ACHIEVEMENTS & RESPONSIBILITIES
- Developed a MERRRN application to detect and report potentially dangerous situations in homes of people with special needs
12/2016 - 08/2017
Vectronic Aerospace – Web app for live observation of animal behaviour
Vectronic Aerospace (Telecommunications, 10-50 employees)
CLIENT
Vectronic Aerospace – International biology and research institutes

SKILLS
Java, JavaFX, Swing, Spring, REST, PostgreSQL, JavaScript, jQuery, AJAX, KML, HTML, CSS, Maven, Tomcat, SVN, Google Maps API, Acceptance Testing, Squarespace, WordPress, Git


ACHIEVEMENTS & RESPONSIBILITIES
- Developed a web application to allow biologists to conduct complex studies of sleep and hibernation patterns based on monitoring data such as body temperature, collar orientation, or activity
- Allowed researchers to better understand the migration of herds and packs by retrieving GPS data from SQL database and visualizing animal positions and virtual fences on Google maps
05/2017 - 07/2017
Vectronic Aerospace – Video Post-processing Tool
Vectronic Aerospace (Telecommunications, 10-50 employees)
CLIENT
Vectronic Aerospace –International biology and research institutes

SKILLS
Java, JavaFX, Swing, Spring, REST, PostgreSQL, JavaScript, jQuery, AJAX, KML, HTML, CSS, Maven, Tomcat, SVN, Google Maps API, Acceptance Testing, Squarespace, WordPress, Git


ACHIEVEMENTS & RESPONSIBILITIES
- Developed a Java application for post-processing JPG and MP4-based data of wildlife monitoring collars
- Parsed 128 GB of binary data per collar to change video orientation, synchronize timestamps with image files, and render timestamps into video frames
- Optimized the battery lifetime of tracking collars from weeks to months by turning certain hardware on only when needed and compensating for a resulting lack of metadata with post-production software
06/2014 - 03/2017
Vectronic Aerospace – Satellite-based wildlife tracking
Vectronic Aerospace (Telecommunications, 10-50 employees)
CLIENT
Vectronic Aerospace – International biology and research institutes

SKILLS
Java, JavaFX, Swing, Spring, REST, PostgreSQL, JavaScript, jQuery, AJAX, KML, HTML, CSS, Maven, Tomcat, SVN, Google Maps API, Acceptance Testing, Squarespace, WordPress, Git


ACHIEVEMENTS & RESPONSIBILITIES
- Simplified the user experience of a collar configuration software by eliminating unnecessary steps
- Decreased time to verify correct collar configuration by a factor of 5 by developing a system to test multiple collar circuits simultaneously

Local Availability

Open to travel worldwide
- available worldwide for remote roles - available on-site in Berlin for up to 100% - available on-site outside of Berlin for up to 40% - happy to visit clients all across Europe every other week (e.g., to collect feedback and discuss requirements)

Other

- no ANÜ / keine ANÜ - no perm roles / keine Festanstellung
Profileimage by Maurice Reichelt Senior Full-stack Software Engineer from Berlin Senior Full-stack Software Engineer
Register