Graham Esau
Software Engineer at Vonage
United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolGraham Esau is a software engineer with a decade of professional experience based in the United Kingdom, currently building software at Vonage. He holds an MEng in Computer Science from the University of Southampton and brings deep expertise in backend systems, particularly in Rust tooling for API and schema generation. His open-source contributions to projects like okapi and schemars show a focus on precise data modeling and automated schema/spec generation for OpenAPI and JSON Schema. Graham’s work demonstrates an ability to refactor and extend core libraries to handle complex types and edge cases, improving correctness and interoperability. Colleagues would describe him as a pragmatic engineer who prefers robust, type-safe solutions and quietly advances developer ergonomics through thoughtful library design. He combines enterprise experience with steady OSS craftsmanship, making him effective at bridging internal product needs and the wider developer ecosystem.
11 years of coding experience
Master of Engineering - MEng, Computer Science, Master of Engineering - MEng, Computer Science at University of Southampton
Github Skills (12)
rust10
openapi10
serde10
enums9
json-schema9
struct9
api8
data-structures8
testing8
data-structure8
apidoc8
software-design8
Programming languages (11)
Github contributions (5)
GREsau/schemars
Aug 2019 - Oct 2022
Generate JSON Schema documents from Rust code
Role in this project:
Back-end Developer
Back-end DeveloperContributions:66 releases, 4 reviews, 393 commits in 3 years 2 months
Contributions summary:Graham primarily contributed to the `gresau/schemars` repository, which focuses on generating JSON Schema documents from Rust code. Their work involved implementing and improving the automatic schema generation process for various Rust types, including primitive types, enums, structs, and complex data structures like maps and tuples. The user also implemented schema properties for strings and numbers, and added functionality for handling options, and ensured correct behavior for features like "required" properties.
json-schemarustserde
GREsau/okapi
Aug 2019 - Jun 2021
OpenAPI (AKA Swagger) document generation for Rust projects
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 releases, 79 commits, 9 PRs in 1 year 10 months
Contributions summary:Graham primarily contributed to the development of a Rust-based OpenAPI document generation tool. Their work involved defining and implementing various data models for representing OpenAPI specifications, including structures for information, contact details, licenses, servers, and operation parameters. They refactored and expanded upon the core functionality by tweaking existing models and adding new ones, ensuring the okapi project could accurately represent various aspects of OpenAPI 3.0 specifications. The user's changes focused on refining the project's data structures for handling OpenAPI information.
openapirustswagger
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