Jaykumar Gujjar
Software Developer at SKYBLUE7
London, England, United Kingdom
Summary
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Rockstar🎓
Top SchoolJaykumar Gujjar is a software developer based in London with 12 years of professional experience specializing in web and back-end development across .NET, JavaScript/TypeScript, GraphQL and AWS. He has contributed to high-profile open-source projects such as the AWS SDKs and Smithy, improving code generation, identity/auth modules and cross-service compatibility—work that reflects a deep understanding of SDK internals and authentication flows. At SKYBLUE7 he blends full-stack MERN and cloud-native skills with SDLC and CI/CD practices, consistently delivering reliable code under tight schedules. His background spans engineering roles and practical operations work, from RAF logistics to Amazon fulfillment, giving him a pragmatic, systems-oriented perspective. A committed problem-solver and clear communicator, he pairs academic grounding in computer science with hands-on contributions to tooling used by large developer ecosystems.
12 years of coding experience
3 years of employment as a software developer
Bachelor of Science - BS Computer Science, Bachelor of Science - BS Computer Science at University of BedfordshireBachelor's degree Mechanical Engineering, Bachelor's degree Mechanical Engineering at Government Engineering College, Valsad
Stackoverflow
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Github Skills (22)
javascript10
back-end-development10
identity10
user-authentication10
authentication10
typescript10
java10
codegen10
aws-sdk10
javas10
aws10
typescript-types10
nodejs10
typescripts10
idl10
Programming languages (7)
Github contributions (5)
smithy-lang/smithy
Jun 2021 - Sep 2022
Smithy is a protocol-agnostic interface definition language and set of tools for generating clients, servers, and documentation for any programming language.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:203 reviews, 74 commits, 128 PRs in 1 year 3 months
Contributions summary:Jaykumar primarily contributed to the Smithy IDL tooling, fixing code generation issues and improving the handling of source locations in trait and node creation methods. Their work involved refining the logic for CloudFormation substitutions, and they addressed several issues related to source location propagation within traits. Additionally, the user made documentation corrections and implemented adjustments to the `FilterSuppressions` class.
smithyagnosticsmithy-modelsprogramming-languageclients
aws/aws-sdk-java-v2
Jan 2023 - Oct 2024
The official AWS SDK for Java - Version 2
Role in this project:Back-end Developer
Back-end DeveloperContributions:485 reviews, 243 PRs, 341 pushes in 1 year 8 months
Contributions summary:Jaykumar primarily contributed to the development of the "Identity & Auth" modules within the AWS SDK for Java v2 repository. Their work focused on creating new identity interfaces, adding and updating module dependencies, and adding placeholder classes. Furthermore, the user made modifications to accommodate new AWS credentials and token-related interfaces, along with related tests. This involved changes across multiple modules and the integration of these changes into the existing codebase.
amazonaws-sdksdkawsjava
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