Heitor Lessa
Principal Engineer at Adyen
Pijnacker, South Holland, Netherlands
Summary
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Rockstar🎓
Top SchoolHeitor Lessa is a Principal Engineer with 15 years of experience modernizing engineering practices and driving developer velocity across cloud-native, serverless, and operational domains. After 11 years at AWS—where he co-built teams, authored the AWS Well-Architected Serverless Lens and launched Powertools for AWS Lambda—he now focuses on aligning bottoms-up engineering craft with top-down strategy to enable distributed, global teams. Heitor blends hands-on backend and DevOps work (notably contributing to prominent open-source projects like aws-sam-cli, aws-lambda-powertools and the widely used cibuildwheel) with product-minded architecture and developer experience improvements. Comfortable across networking, support, technical writing and leadership functions, he has guided organizations of all sizes through migrations, team topology changes and operational transformations. Based in the Netherlands, he pairs deep technical fluency with a habit of building communities and shipping reproducible infrastructure and developer tooling.
15 years of coding experience
9 years of employment as a software developer
Networking technologies Computer Systems Networking and Telecommunications, Networking technologies Computer Systems Networking and Telecommunications at Veris IBTA - Grupo IbmecNetworking technologies Computer Systems Networking and Telecommunications, Networking technologies Computer Systems Networking and Telecommunications at FHO | Fundação Hermínio Ometto
Portuguese, English, Spanish
Stackoverflow
46reputation
2kreached
3answers
0questions
Github Skills (38)
github-ci10
pytest10
tracer10
python10
aws-lambda10
cil10
wheels10
cicd10
sam10
lambdas10
aws10
api-gateway10
build-automation10
lambda10
serverless10
Programming languages (15)
Github contributions (5)
aws-powertools/powertools-lambda-python
Nov 2019 - Dec 2022
A developer toolkit to implement Serverless best practices and increase developer velocity.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:3 releases, 1672 reviews, 1591 commits in 3 years 1 month
Contributions summary:Heitor primarily focused on contributing to the core functionality of the aws-lambda-powertools-python repository. Their work involved adding and refining features within the tracing and logging utilities, introducing and improving the event handling capabilities, and enhancing code quality through linting. Moreover, they actively participated in the release process and infrastructure management, by adding codeowners, handling CI/CD related changes and maintaining the project dependencies.
distributedidempotencypythoncustom-metricslambda-functions
aws/serverless-application-model
Nov 2016 - Oct 2018
The AWS Serverless Application Model (AWS SAM) transform is a AWS CloudFormation macro that transforms SAM templates into CloudFormation templates.
Role in this project:Backend & Cloud Engineer
Backend & Cloud EngineerContributions:7 commits, 8 PRs, 36 comments in 1 year 10 months
Contributions summary:Heitor made several contributions focused on enhancing serverless application examples within the AWS SAM repository. These contributions include adding an encryption proxy example using KMS, implementing a Lambda@Edge sample, and refactoring existing code to use relative paths and simplify outputs. The user also updated the documentation and examples with new features. Their work involved backend logic, cloud configuration and documentation updates.
aws-cloudformationaws-serverless-application-modelserverless-application-modelserverless-applicationsaws-serverless
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