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Profileimage by David Bieder Senior Software Engineer, Coach, and Trainer from Berlin

David Bieder

Berlin
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Last update: 14.03.2025

Senior Software Engineer, Coach, and Trainer

Graduation: Diplom-Informatiker - Computer Science (summa cum laude)
Hourly-/Daily rates: show
Languages: German (Native or Bilingual) | English (Full Professional)

Keywords

Attachments

CV-David-Bieder_281124.pdf

Skills

Professional Statement

Senior Software Engineer, Coach, and Trainer with 25 years of industry experience and a strong advocate of eXtreme Programming and DevOps who – in between projects – spearheads digital and agile transformations at Fortune 100 enterprises through customized corporate training, coaching, and mentoring.

Key Experience
- 25 years of full-time, hands-on experience in professional software engineering covering the whole SDLC
- 16 years of full-time, hands-on experience with leading and growing Agile software engineering teams
- 9 years of hands-on experience teaching eXtreme Programming and professional software engineering skills
- at companies like TESLA, American Airlines, IBM, Allstate, Mercedes, Financial Times, ImmoScout24, 1&1, Deutsche Post DHL, VW, Automedia, Kabs, .remind.me, Helmholtz-Zentrum, Treatmind, and more

Key Skills
- FRONTEND: React, Redux, Flutter, Tailwind, MUI, JavaScript, TypeScript, i18n, a11y, HTML, CSS, SSR
- BACKEND: Next.js, REST, GraphQL, Node, Java, Express, Spring, Swagger, Prisma, MongoDB, SQL, Serverless
- TDD: Test-first Automation, Mocking, e2e Testing, Jest, Cypress, Codecept, Testing Library, Storybook
- DEVOPS: CI/CD, DORA, Docker, Kubernetes, AWS, GCP, OpenShift, IaC, Jenkins, GitLab, Tekton, ArgoCD, GitOps
- AGILE: XP, Scrum, Kanban, OKRs, Product Ownership, User Stories, Emergent Design, Pair Programming, JIRA

Project history

01/2019 - Present
cultivate – Principal Software Engineer, Lead Instructor, Player-Coach, and Product Owner
cultivate GmbH (Internet and Information Technology, < 10 employees)
CLIENT
Software house & corporate training provider

SKILLS
React, Redux, Bootstrap, JavaScript, TypeScript, i18n, a11y, Next.js, REST, GraphQL, Node, Serverless, Express, FeathersJS, Swagger, MongoDB, DynamoDB, PostgreSQL, Redis, TDD, Jest, Cypress, Codecept, Testing Library, Storybook, CI/CD, GitOps, Docker, Kubernetes, AWS, CloudFormation, CDK, GitHub Actions, GitLab, CircleCI, Jenkins, Scrum, Kanban, XP

ACHIEVEMENTS & RESPONSIBILITIES
- Supported software projects as Principal Software Engineer, Product Owner, and Coach at Tesla, American Airlines, IBM, Mercedes, Porsche, BP, ImmoScout24, Kaiser+Kraft, .planetly, .remind.me, Helmholtz-Zentrum, GetYourGuide, Marley Spoon, Automedia, Treatmind, Kabs, and more
- Designed, produced, and delivered online courses and live workshops (on Test-first Programming, how-to TDD React apps, how-to TDD Microservices, eXtreme Programming, and DORA metrics & capabilities)
- Designed and conducted 3-month full-stack bootcamps and provided on-the-job mentoring to the staff at the companies above
- Accelerated the Software Delivery Performance at the companies above by introducing DevOps and Software Engineering Best Practices (with DORA Metrics, Trunk-based Development, Emergent Design, SOLID & Clean Code Principles, Rule of 3, Vertical User Stories, WiP-Limits, Pull System, GitOps, CI/CD, Testing Principles, Test Automation, Pair Programming, Live Peer Reviews, Test-first Programming, and many more)
- Turned 6 people without any pre-existing IT know-how into professional software engineers who now lead development efforts at our client’s teams as role models in terms of hard and soft engineering capabilities
- Developed and released an OpenSource Testing Library that is currently used at companies like American
Airlines and Treatmind
09/2023 - 10/2024
Treatmind – CTO and Product Owner
Treatmind (Pharmaceuticals and medical technology, < 10 employees)
CLIENT
Provider of digital health apps

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

ACHIEVEMENTS & RESPONSIBILITIES
- 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)
- Introduced Test Automation and GitOps as Infrastructure as Code solution to simplify and accelerate
continuous delivery of daily product increments, reduce risk of human error and to greatly improve auditability
- Developed a new Next.js-based admin app to manage users, user consents, and 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 FeatherJS- and MongoDB-bases based backend and a Next.js app for account management
- Reduced the risk of corrupt databases by introducing server-side validation, transactions, and migrations
10/2023 - 10/2024
TESLA – Senior Software Engineer and Player-Coach
Tesla (Automotive and vehicle construction, >10.000 employees)
CLIENT
American automotive company producing the world's most popular EVs

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

ACHIEVEMENTS & RESPONSIBILITIES
- Developed and delivered accessible frontend components, scalable backend services, and database
schema migrations in a team of 14 engineers and designers using a Test-first approach
- 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
- Introduced test automation with system, integration, component, and unit tests to avoid regression and
ensure a speedy development and delivery process
- Configured an automated dependency upgrade process to make the app maintainable for the long-term
- Consulted the Product Owner on how to approach and slice requirements into good User Stories to ensure
value delivery to end-users every week
05/2022 - 03/2023
American Airlines – Player-Coach, Trainer, and Lead Software Engineer
American Airlines (Transport and Logistics, >10.000 employees)
CLIENT
The world's largest airline

SKILLS
React, TypeScript, FastAPI, Python, Backstage, MUI, a11y, Lerna, REST, CORS, Node, Shell Script, Express, MySQL, Jest, Cypress, Pytest, Testing Library, Storybook, AWS, Azure, Rancher, Docker, Kubernetes, CI/ CD, GitHub Actions, ArgoCD, GitOps, eXtreme Programming

ACHIEVEMENTS & RESPONSIBILITIES
- Helped 20 infrastructure engineers transition into a software engineering role
- Taught a series of lectures on DevOps best practices, incl. Test-first Programming and Pair Programming
- Acted as player-coach and embedded with the development team to help them focus on delivering value
- Helped the team focus on the essence of Lean, Agile, and eXtreme Programming without resorting to dogma
07/2018 - 09/2022
ImmoScout24 – Lead Software Engineer, Lead Instructor, Player-Coach, and Scrum Master
ImmoScout24 (Banks and financial services, 500-1000 employees)
CLIENT
Germany's leading online marketplace for real estate

SKILLS
React, Redux, JavaScript, TypeScript, i18n, a11y, Next.js, REST, Node, Java, Serverless, Express, Spring, Swagger, MySQL, MongoDB, TDD, Jest, Cypress, Codecept, Testing Library, Storybook, CI/CD, DORA, Docker, AWS, CloudFormation, CDK, Jenkins, Graphana, Splunk, XP, Scrum

ACHIEVEMENTS & RESPONSIBILITIES
- Designed and developed React-based input and display elements that were chosen to build the foundation of the most comprehensive rebranding and redesign in my client’s 20-year history – a multi-million EUR initiative affecting 1,500 employees and hundreds of thousands of daily visitors
- Coached 5 teams and led the development of 10 React apps with microservices, including:
   - a React app to enable live viewings of apartments in the context of the COVID-19 health crisis
   - a subscription-based online service to streamline the process of buying a house
   - a responsive web dashboard to manage and optimize mortgage payments
   - a real estate search and comparison tool for private investment opportunities
06/2021 - 11/2021
IBM – Trainer
IBM (Internet and Information Technology, >10.000 employees)
Client
The IT company that helped put the first people onto the moon

SKILLS
React, JavaScript, Spring Boot, Java, CORS, PostgreSQL, MongoDB, Shell Script, Nginx, Docker, Kubernetes, IBM Cloud, OpenShift, CI/CD, Tekton, GitOps, ArgoCD, Jest, First-principles

ACHIEVEMENTS & RESPONSIBILITIES
- Delivered 7 bootcamps to 150 enterprise developers covering eXtreme Programming and DevOps practices
- Helped students learn to create CI/CD pipelines using First Principles, OpenShift, K8s, Docker, and Tekton to ship 12-factor applications of various tech stacks and databases
02/2012 - 12/2018
db agile – Principal Software Engineer, Lead Instructor, Player-Coach, and Product Owner
db agile (Internet and Information Technology, < 10 employees)
CLIENT
IT Consultancy specializing in agile software engineering and coaching

SKILLS
React, Redux, Bootstrap, Styled Components, JavaScript, i18n, a11y, REST, Node, Java, Serverless, Express, Spring, Swagger, MongoDB, DynamoDB, MySQL, TDD, Jest, Cypress, Codecept, Enzyme, Storybook, CI/CD, DORA, Docker, AWS, CloudFormation, Jenkins, CircleCI, XP, Scrum, Kanban, Swift

ACHIEVEMENTS & RESPONSIBILITIES
- Trained and coached the staff at Allstate, Deutsche Post DHL, 1&1, Cornelsen, HEG, and ImmoScout24 in eXtreme Programing and DevOps practices
- a SaaS platform for the calculation of tailor-made financial indices
- a service to synchronize in-house subscription products with the Apple App Store and Google Play Store
- Supported several clients with the development of applications and microservices, including:
   - a fitness app where every training video is personalized
   - a smart home app to support people with special needs
   - a responsive production planning app with interactive Gantt charts
03/2016 - 12/2016
Allstate Insurance — Lead Instructor and Player-Coach
Allstate (Insurance, >10.000 employees)
CLIENT
America’s largest insurance provider

SKILLS
React, Bootstrap, JavaScript, Webpack, HTML, CSS, CSR, REST, Java, Spring Boot, MongoDB, PostgreSQL, TDD, Mocha, Protractor, 12-factors, CI/CD, Pivotal CloudFoundry, Jenkins, Nagios, Git, XP

ACHIEVEMENTS & RESPONSIBILITIES
- Spearheaded the transition from a traditional software engineering approach into an Agile one, utilizing eXtreme Programming and DevOps practices such as TDD, Pair Programming, and Continuous Delivery
- Conducted 3-month full-stack software engineering bootcamps with classes of 30 software engineers
- Embedded with teams to adopt eXtreme Programming and DevOps practices through direct pairing on features using a variety of technologies, including Node, React, Spring Boot, and CloudFoundry
09/2014 - 06/2015
Financial Times — Senior Software Engineer and Player-Coach
Financial Times (Media and Publishers, 500-1000 employees)
CLIENT
Leading UK-based international daily financial newspaper

SKILLS
Java, Dropwizard, REST, GraphDB, RDF, AWS, CI/CD, Jenkins, Shell Scripting, Docker, Fleet, CoreOS, Varnish, Kafka, Apigee, Scrum

ACHIEVEMENTS & RESPONSIBILITIES
- Developed a semantic metadata platform to infer new insights about businesses and economies
- Guided a team through a transformation from a non-existing process to a Kanban-based approach
- Reduced time for creating and deploying new production-ready microservices from days to under 15 min.
- Supported a long-running migration of complex clustered server applications into the Cloud
05/2012 - 11/2013
Deutsche Post DHL — Senior Software Engineer and Mentor
Deutsche Post DHL (Transport and Logistics, >10.000 employees)
CLIENT
The world's largest courier company

SKILLS
Java, Groovy, Spring, Grails, REST, SMTP, SOAP, OAuth 2, Hibernate, Liquibase, MySQL, TDD, JUnit, Nagios, CI/CD, Gerrit, Puppet, iOS, Android, Objective-C, ScrumBan

ACHIEVEMENTS & RESPONSIBILITIES
- Developed web and mobile apps and RESTful microservices to receive physical mail on your smartphone
- Coached a team in Kanban and Toyota Katas to reveal and resolve severe bottlenecks in the development and delivery process on a company level, ultimately enabling multiple deployments per day
- Designed and implemented an OAuth 2.0 compliant authentication service to allow 3rd-party applications to integrate and securely use system-critical enterprise services easily
01/2011 - 11/2011
1&1 — Senior Software Engineer and Scrum Master
1&1 (Internet and Information Technology, 1000-5000 employees)
CLIENT
Leading Internet Service Provider, offering services worldwide

SKILLS
Java, Spring, JSP, REST, SOAP, TDD, Shell Scripting, Linux, CI/CD, Splunk, Nagios, ScrumBan

ACHIEVEMENTS & RESPONSIBILITIES
- Introduced a customized Agile framework to a team of 8 to perform in a context of several parallel running waterfall projects and implemented a zero bug policy after burning down a huge backlog of inherited bugs
- Developed the middleware of an innovative do-it-yourself generator for professional homepages
01/2009 - 12/2010
Statistische Landesämter – Senior Software Engineer
Statistische Landesämter (Public service, 1000-5000 employees)
CLIENT
Federal office, providing statistical information to the public of Germany

SKILLS
Java, Spring, AspectJ, Hibernate, Ehcache, REST, Oracle, TDD, JUnit, CookSwing, GWT, Velocity, Maven, Hudson, JBoss, Tomcat, SVN, Scrum

ACHIEVEMENTS & RESPONSIBILITIES
- Guided a team through the migration of complex and long-running software processes to a modern Java Enterprise stack, finally allowing the client to shut down an expensive mainframe computer
- Reduced the runtime from several days to a couple of hours in the worst-case scenario by separating logic and performance aspects which then allowed parallel processing and caching of data
- Designed a dynamic RBAC system to allow controlled system access according to the latest legislation
01/2006 - 12/2008
Radon Labs — Software Engineer
Radon Labs (Media and Publishers, 50-250 employees)
CLIENT
At that time, largest computer and video game developer in Germany

SKILLS
C#, C++, .Net, SQL, XSD, UML, Maya, MEL, CVS, i18n

ACHIEVEMENTS & RESPONSIBILITIES
- Designed an XML-based file format and adjusted the toolchain to replace a binary format reducing the data consumption by a factor of 1,000 and enabling the effective use of version control systems
- Designed and implemented a sound system and the toolchain for a massive role-playing game, allowing background music and ambient sound to adjust dynamically according to the current gameplay
01/2000 - 12/2007
BPRSV – Software Engineer and Project Manager
BPRSV (Pharmaceuticals and medical technology, 10-50 employees)
CLIENT
Provider of fitness and health services

SKILLS
Java, PHP, HTML, CSS, MySQL, UML, OOP, MVC, Generics, Ceremony Facilitation, Code Reviews

ACHIEVEMENTS & RESPONSIBILITIES
- Led a team of 3 while developing a web app for tracking sports activities for a non-profit association
- Developed an encryption tool based on asymmetric Public-key cryptography for a local university
- Designed and implemented learning tools (e.g., to visualize how the anti-aliasing algorithm works

Local Availability

Open to travel worldwide
- available worldwide for remote roles - available on-site in Berlin up to 5 days a week - available on-site outside of Berlin up to 3 days a week - 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 David Bieder Senior Software Engineer, Coach, and Trainer from Berlin Senior Software Engineer, Coach, and Trainer
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