Cesar Alvernaz
Principal Engineer, Distributed Systems at Workday
Dublin, Ireland
Summary
🤩
Rockstar🎓
Top SchoolCesar Alvernaz is a Principal Engineer specializing in distributed systems with 11 years of experience designing performant, usable software at scale, currently leading architecture and delivery at Workday from Dublin. He combines deep expertise in software design patterns, quality engineering and cloud-native services with hands-on leadership across teams and products. An active open-source contributor and director at Weirdloop, Cesar has improved critical API Gateway and LocalStack integrations used by many cloud-native developers. His background spans telecommunications and cloud applications, moving from J2EE network-management systems to modern distributed services at PTC and Workday. Known for pragmatic problem solving, he focuses on bridging developer ergonomics with robust system performance. He often tackles the non-obvious trade-offs between usability and scale, turning integration edge-cases into dependable platform features.
11 years of coding experience
16 years of employment as a software developer
Master, Computer Science, Master, Computer Science at Universidade de Aveiro
English, Portuguese
Stackoverflow
1reputation
0reached
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Github Skills (14)
aws-apigateway10
api-rest10
rest-api10
api10
aws10
boto10
python10
apidoc10
api-design10
restful-api10
aws-api-gateway-v210
testing10
pytest9
openapi9
Programming languages (12)
Github contributions (5)
localstack/localstack
Dec 2021 - Jan 2023
💻 A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline
Role in this project:
Back-end Developer
Back-end DeveloperContributions:265 reviews, 112 commits, 186 PRs in 1 year
Contributions summary:Cesar primarily contributed to the back-end functionality of the LocalStack project, focusing on improvements within the API Gateway service. Their work involved fixing issues related to HTTP integration, including parameter passing and the handling of request and response templates, notably with VTL. Furthermore, the user addressed bugs and enhancements related to S3 integration, OpenAPI imports, and authorizer implementations. The contributions demonstrate a focus on improving the functionality and stability of API Gateway integrations within the LocalStack environment.
serverless-cloudpythonaws-cloudtestingserverless
getmoto/moto
May 2022 - Jan 2023
A library that allows you to easily mock out tests based on AWS infrastructure.
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 review, 9 commits, 9 PRs in 8 months
Contributions summary:Cesar primarily contributed to the development of the APIGateway functionality within the moto library. Their work involved adding features to the integration model, including request parameters, response parameters, content handling, and connection type. They also addressed status code issues and added new properties to the authorizer in API Gateway V2. These commits demonstrate a focus on enhancing the API Gateway's capabilities and functionality.
ec2bototestinginfrastructureaws-infrastructure
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