Kamil Kisiela is a software developer based in Warsaw with 11 years of experience building full-stack web applications and developer tooling. He has a strong focus on GraphQL—contributing to high-profile projects like Apollo Client, Graph Node, GraphQL Mesh and GraphQL Inspector—working across schema design, execution, plugins and performance optimizations. Equally comfortable on front-end Angular/React integrations and back-end services, he has shipped features from client-side caching and query APIs to server-side validation, metrics and API versioning. His open-source work shows attention to robustness (memory-leak fixes, caching validation) and backwards compatibility across ecosystems. At The Guild Software and Jelly JS he continues to shape GraphQL developer experiences and tooling while also maintaining hands-on delivery for production systems. An understated strength is his knack for bridging developer UX with deep execution-layer improvements, improving both DX and runtime reliability.
11 years of coding experience
6 years of employment as a software developer
High School, Informatics, High School, Informatics at Technical University of Wroclaw
A fully-featured, production ready caching GraphQL client for Angular and every GraphQL server 🎁
Role in this project:
Front-end Developer
Contributions:55 releases, 5 reviews, 539 commits in 6 years 5 months
Contributions summary:Kamil made several contributions to the `apollo-angular` repository, focusing on enhancing the user interface and functionality of the GraphQL client for Angular. Their commits introduced features such as a query method for Angular2Apollo and the ability to fetch more data. Additionally, the user exposed the `ApolloQueryObservable` in the index module and added tests for `missingCompat` and `backcompat` methods, improving the library's overall usability and completeness. Several commits focused on backward compatibility with Angular and Apollo client versions.
🕵️♀️ Validate schema, get schema change notifications, validate operations, find breaking changes, look for similar types, schema coverage
Role in this project:
Back-end Developer
Contributions:64 releases, 29 reviews, 550 commits in 3 years 10 months
Contributions summary:Kamil's commits primarily focus on the implementation of features related to schema validation and change detection within a GraphQL context. The changes involve the modification of code related to input objects, diffing schemas, argument validation, and the introduction of new functionality to identify and highlight changes within a GraphQL API. Furthermore, the commits demonstrate a focus on improving the codebase through the addition of code that helps with schema coverage.
apilooksimilarvalidationprobot-app
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Kamil Kisiela - Software Developer at The Guild Software