David Reess  
===============

  Contact  
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- Email: david@devoxa.io


  Professional Summary  
------------------------

- Principal full-stack engineer with 10+ years experience
- Bachelor of Computer Science from Hochschule der Medien, Stuttgart
- Bilingual proficiency in German and English
- Extensive experience in designing, developing, and managing web applications
- Expert in JavaScript/TypeScript, NodeJS, React, PostgreSQL, and familiar with a wide range of other technologies
- Passionate about programming since age 7
- Notable achievements in various projects, including a companion site for Guild Wars 2 with 650K+ registered users


  Open-Source Work  
--------------------

- Dedicated to contributing high-quality code to the open-source community
- Github: https://github.com/queicherius, https://github.com/devoxa


  Professional Experience  
---------------------------

Devoxa Limited (2021-present)

- Solo-founded Devoxa Limited and undertook significant projects for multiple clients in the web sector
- Designed and developed an architecture to absorb high-traffic bursts at the edge, with peaks of 30 million requests in 15 minutes
- Engineered and rolled out a company-wide monitoring and observability solution based on OpenTelemetry
- Architected and developed a real-time transaction processing layer for all major blockchains
- Developed a custom e-commerce layer for client's in-house ERP/CRM platform
- Technologies: HTML, CSS, TypeScript, React, NextJS, NodeJS, Redis, Postgres, NestJS, Docker, Kubernetes

Thingylabs GmbH (2016-present)

- Co-founded Thingylabs GmbH, a web development agency, as the CTO
- Worked full-time as the primary Principal Engineer for the "Pantaris" project from Bosch Engineering GmbH (2016-2023)
- Cloud-based platform with focus on the development and deployment of automotive software
- Evolved the initial prototype with a team of 6 into a fully functional production system and beyond with a team of 100+
- Role spanned across design, testing, frontend, backend, architecture and orchestration with main focus on and responsibility for critical platform features
- Designed and developed a design system for consistent styling of the platform and all external applications
- Architected and implemented a ground-up redesign of the API, optimizing it for internal and external use, and improving test coverage, security and performance
- Designed and implemented a fine-grained permission system that passed extensive external penetration tests
- Designed and developed a query language that allowed for targeted search of all resources and relations via the API
- Technologies: HTML, CSS, JavaScript, TypeScript, React, MongoDB, Postgres, NodeJS, Redis, Docker, Kubernetes, Cypress, Playwright

gw2efficiency (2013-present)

- Designed, developed and operated a companion site for the MMORPG Guild Wars 2, used by 40% of it's active player base
- Allows players to access all available in-game data like inventories and achievements from their browser
- Optimizes gameplay by calculating the most efficient way to achieve certain goals
- Provides insight into historical data changes on the individual player level
- Built a fault-resistant queue system to regularly snapshot and process player's accounts
- Handling 1B+ total database rows, 500K+ queue jobs per day and 25M+ API requests per day
- 150M+ page views, 650K+ registered users, $5,000+ MRR through advertisements and premium subscriptions
- Technologies: HTML, CSS, JavaScript, TypeScript, React, Angular, MongoDB, NodeJS, Redis, Docker, Kubernetes, Playwright


  Education  
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Bachelor of Computer Science, Hochschule der Medien, Stuttgart, 2017

- Specialization on web development
- Additional modules in cyber security, AI, UI/UX design and testing
- Internship at anythinx GmbH and Bosch Engineering GmbH with focus on large-scale web crawling and data aggregation
- Thesis on Peer-to-Peer Distributed Computing


  Skills  
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- Languages: Expert in JavaScript, TypeScript, CSS, HTML, PHP;
    proficient in Python, Ruby, Bash;
    familiar with Rust, Go, Java, C++, C#
- Software Testing: Expert in Cypress, Playwright, Jest
- Frameworks: Expert in React, NextJS, ExpressJS, NestJS, Laravel, Angular;
    proficient in Vue.js, Svelte
- Databases: Expert in Postgres, MySQL, Redis, MongoDB;
    proficient in InfluxDB, MQTT
- Tooling: Expert in NPM, Git, Linux;
    proficient in Puppet, Ansible
- Cloud Development: Expert in Docker, Kubernetes, Serverless, OpenTelemetry;
    proficient in AWS, Azure, Google Cloud
- Mobile Development: Expert in PWA;
    familiar with iOS, Android, Flutter
- CI/CD: Expert in Github CI/CD;
    proficient in Jenkins