Cesar is a Senior Full-stack Developer with 10+ years of experience working on dozens of projects in eCommerce, sports championships, life insurance, healthcare, warehouse management, NFT, cryptocurrencies, and logistics using primarily Ruby on Rails and .NET. He builds high-quality and well-tested web systems and prototypes and develops user-friendly responsive interfaces. Cesar is also an experienced team lead who manages multidisciplinary teams and their continuous development.
Worked in two squads: Legacy Operations, responsible for solving technical debts and optimizing API performance, and Front-end Squad for maintaining and evolving the company’s front-end applications and tools.
Solved technical debts and improved platform performance and usability, performing code refactoring to optimize critical points identified by monitoring tools.
Cleaned unused legacy code, refactored bad code to enhance system stability and maintainability, and conducted code rescue on legacy systems to improve code stability and efficiency.
Participated in strategic meetings to define sprint priorities and align technical needs with company objectives and developed new features in legacy systems to meet current user needs.
Collaborated on building a new front-end application using React.js and TypeScript.
Contributed to defining the tech stack and patterns for new front-end applications through GitHub Discussions, ensuring adherence to company development standards.
Created and implemented new product features and improved the platform performance to meet user needs and improve customer experience.
Monitored the main platform performance and availability, addressing technical debt and refactoring feature code to reduce performance bottlenecks.
Deployed and released experimental and exclusive features for specific client schools and education centers.
Monitored app performance on Heroku servers, supported outages, and scaled it based on usage metrics, ensuring stability and efficiency during high demand.
Troubleshot and resolved technical issues in production environment, reducing downtime and improving system reliability.
Built new products for the financial market, participated in strategic decisions alongside the marketing and product teams, and managed multidisciplinary teams and their continuous development.
Built API architecture using Ruby on Rails and consolidated the use of API-first methodology in the company.
Led the development of the company’s first React.js applications and created a React components library using Storybook based on the company's design system.
Led 15+ people in different teams (back-end, front-end, QA) and collaborated with multiple teams (marketing, DevOps, UX, operations) and other development squads to conceive and build new products.
Coordinated the lifecycle of 5+ successful projects, built the company’s first front-end React team, and trained new tech leads.
Built custom-made software for clients from different market areas and maintained in-house projects.
Led the development of multiple projects in healthcare, life insurance, warehouse management, and eCommerce platforms.
Developed projects using Agile methodologies, QA tools, code review, and automated tests and maintained rescue legacy applications created by third-party vendors.
Recruited and trained team members and communicated with clients and partners to manage delivery deadlines and expectations.
The platform, built with Ruby on Rails and React, manages infrastructure of soccer tournaments and is an eCommerce platform for the biggest children’s soccer tournament in Latin America, supporting multiple payment platforms.
The first production version was released within a challenging 4 month deadline in 2016 and is updated annually with new features to accommodate the tournament's growth.
The website is used by 10 administrators and receives over 10K viewers during the two-week event; it also supplies data for the official mobile app while system architecture, sprint planning, scope definition of releases and daily followups were managed.
