Robert Schäfer

Lohmar, North Rhine-Westphalia, Germany

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Summary

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Senior

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Top School

Robert Schäfer is a Full Stack Engineer with 11+ years of experience building production web and IoT systems, currently focused on modern Node.js backends, infrastructure as code, and cross-platform apps. He blends front-end expertise with Vue/Nuxt and Tailwind with back-end skills in Node, Ruby on Rails, GraphQL and Neo4j, and operates infrastructure via Docker, Kubernetes and Ansible. A frequent speaker, mentor and university lecturer, he emphasizes knowledge transfer and hands-on training, routinely onboarding and upskilling teammates. His open-source contributions include performance and testing improvements to the Neo4j-GraphQL library, reflecting a practical focus on reliable integration tests and query optimization. He has driven product and technical leadership in mission-driven projects—ranging from crowdsourced journalism and civic participation tools to an automotive meta search engine—often prototyping hardware-backed services with Raspberry Pi and MQTT. Based in Lohmar, Germany, he prefers remote and contract work and is exploring Golang and Rust for performance-oriented systems.

11 years of coding experience

6 years of employment as a software developer

Abitur, 1.5, Abitur, 1.5 at Gymnasium Lohmar

Master's degree, Computer Science, 1.6, Master's degree, Computer Science, 1.6 at Hasso Plattner Institute

Stackoverflow

Stats

41reputation

750reached

2answers

1question

Github Skills (16)

neo4j10

graphql10

nodejs10

javascript10

cypher10

performance-optimization10

wordpress-graphql10

wpgraphql10

testing10

test-automation9

automation-testing9

automation9

automations9

dom6

webscraping6

Programming languages (21)

SmartyC#JavaCSSRustCTeXVue

Github contributions (5)

neo4j-graphql/neo4j-graphql-js

May 2019 - Sep 2019

NOTE: This project is no longer actively maintained. Please consider using the official Neo4j GraphQL Library (linked in README).

Role in this project:

Back-end Developer

Contributions:1 review, 15 commits, 8 PRs in 3 months

Contributions summary:Robert primarily contributed to the testing infrastructure and performance improvements within the Neo4j GraphQL library. They refactored test helpers, improved test organization, and introduced optimizations for query performance, specifically related to `ORDER BY` clauses. Several commits focused on addressing and mitigating issues related to database state in integration tests, suggesting a focus on reliable testing practices. This work involved modifications to the core query translation logic.

graphqlneo4jcypherneo4j-graphql

Systems-Development-and-Frameworks/homework

Sep 2019 - Jan 2021

Contributions:9 reviews, 62 commits, 33 PRs in 1 year 4 months

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