Lenon Oliveira

Summary

Software Engineer with 16+ years of experience designing and developing robust web applications and APIs. I’m an expert in Ruby on Rails and Python with extensive knowledge of back-end and front-end technologies. I have a proven track record of delivering high-quality, scalable solutions across diverse business domains. I’ve worked with teams in various organizations, from startups to enterprise environments. I’m committed to engineering excellence, clean code practices, and continuous improvement.

Tech skills

Programming languages: Ruby, Python, JavaScript/Node.js, Go, HTML, CSS.
Databases: PostgreSQL, TimescaleDB, SQL.
Frameworks and libraries: Ruby on Rails, FastAPI, Pandas, Polars, React, RSpec, pytest, Jest, Vitest.
Cloud and DevOps: AWS (EC2, ECS, RDS, Lambda, SQS, CloudFormation), Docker, Kubernetes (EKS), Git, CI/CD.
Methodologies: Agile (Scrum, Kanban), TDD/BDD, DevOps.

Experience

Skie.io

Senior Software Engineer

Mar 2023 – Present

Remote

Skie.io offers cloud cost optimization services (FinOps).

Skills: Ruby, Ruby on Rails, Python, JavaScript, Docker, PostgreSQL, AWS, SQL, Pandas, Jupyter Notebook, FastAPI, CI/CD, Kanban.

Navisite

Senior Software Engineer

Nov 2017 – Feb 2023

Remote

Navisite is a cloud services provider and IT consulting company. I was part of the team responsible for the multi-cloud provisioning platform.

Skills: Ruby, Ruby on Rails, Python, JavaScript, React, Docker, PostgreSQL, AWS Lambda, AWS EC2, AWS SQS, REST, TDD, CI/CD, Kanban.

Acesso

Senior Software Engineer

Mar 2017 – Nov 2017

São Paulo, SP, Brazil

Acesso was a fintech specialized in payment solutions. I was part of the team responsible for core services.

Skills: Clojure, PostgreSQL, Docker, RabbitMQ, Ruby, CI/CD, TDD, Agile.

Locaweb

Software Engineer

Oct 2013 – Feb 2017

São Paulo, SP, Brazil

Locaweb offers a range of services, including web hosting, cloud computing, and SaaS applications, among other enterprise solutions. I was part of the SaaS division, specifically assigned to the Email Marketing team.

I was also assigned to work with the SMTP team, responsible for the transactional email service. Some of my contributions included:

Skills: Ruby, Ruby on Rails, Python, PostgreSQL, MongoDB, CSS, HTML, JavaScript, REST, TDD, CI/CD, Agile.

Concrete Solutions

Software Developer

Jun 2011 – Sep 2013

São Paulo, SP, Brazil

Concrete Solutions was a tech consulting company that provided software development and cloud consulting services. I was part of the team responsible for developing a payment gateway for the Brazilian e-commerce market.

After that project ended, I was assigned to work on-site at Locaweb, one of Concrete Solutions' customers. Some of my responsibilities included:

Skills: Ruby, Ruby on Rails, JavaScript, CSS, HTML, MySQL, PostgreSQL, CI/CD, TDD, Agile, Scrum.

Astrus Digital

Software Developer

Aug 2010 – Jun 2011

Erechim, RS, Brazil

Astrus Digital is a digital agency that offers web development, e-commerce, and digital marketing services.

Skills: Ruby, Ruby on Rails, MySQL, JavaScript, CSS, HTML, PHP, WordPress.

diHITT

Programmer

Mar 2009 – Jan 2010

Remote

diHITT was a Brazilian social news website where users could submit links to articles, discuss them, and vote on these submissions.

Skills: Ruby, Ruby on Rails, MySQL, JavaScript, CSS, HTML.

Education

Bachelor’s Degree in Computer Engineering

Anhembi Morumbi University (UAM). 2012 - 2017. São Paulo, SP, Brazil.