Lenon Marcel
Brazil
Summary
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SeniorLenon Oliveira is a Senior Software Engineer based in São Paulo with 16+ years building cloud-native, high-throughput web systems and SaaS products. He designs and implements end-to-end solutions—from core REST APIs and ETL pipelines to customer dashboards—using Ruby/Rails, Python, Go, Clojure and React, with strong PostgreSQL and message-driven architecture experience. Lenon has repeatedly solved scaling and data-migration challenges (notably migrating large apps from MongoDB to PostgreSQL and implementing multitenant sharding) and built reliable multi-cloud provisioning, backup and FinOps platforms for AWS, Azure and Oracle. He combines hands-on engineering with operational thinking—creating CI/CD pipelines, CLIs and serverless architectures—to reduce costs and recovery time for customers. A pragmatic polyglot, he often blends microservices, background processing and integrations to automate complex workflows that used to be manual.
16 years of coding experience
Github Skills (81)
dashboard10
tabler10
ruby10
uikit10
modular10
jquery10
select210
html10
aws-sdk10
threshold10
bootstrap10
css10
sass10
throttling10
driver10
Programming languages (8)
Github contributions (5)
lenon/lenon.dev
Sep 2021 - May 2025
Contributions:25 pushes, 4 branches in 3 years 8 months
lenon/stonks
Jan 2022 - Mar 2026
Python scripts that I use to keep track of my investments portfolio [wip]
Contributions:31 reviews, 50 PRs, 125 pushes in 4 years 2 months
python-scriptsfinanceinvestment-portfolioinvestmentspandas
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