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Filipe – React, Ruby on Rails, Typescript, experts in Lemon.io

Filipe

From Brazil (UTC-3)

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Full-stack Web DeveloperSenior
17 years of commercial experience
E-commerce
Fintech
Healthcare
Healthtech
Job and career services
Logistics
Sales
Social media
B2B
B2B2C
B2C
CRM
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Filipe – React, Ruby on Rails, Typescript

Filipe is a Senior Full-Stack Engineer with over 15 years of experience and a background in graphic design. His strongest expertise lies in Ruby on Rails development, complemented by solid skills in React. He has contributed to projects across fintech, healthcare, e-commerce, and other sectors. Filipe has experience across diverse environments, with a strong preference for early-stage startups where rapid development and innovation drive tangible results. He also has extensive experience mentoring developers and is committed to fostering growth within his teams.

Main technologies
React
7 years
Ruby on Rails
15 years
Typescript
1 year
Ruby
15 years
Node.js
9 years
Additional skills
Solidity
Blockchain
Web 3.0
JavaScript
Next.js
Express.js
Nest.js
MySQL
PostgreSQL
NoSQL
MongoDB
Redis
ElasticSearch
CouchDB
GraphQL
Elixir
Kubernetes
Docker
Direct hire
Potentially possible
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Experience Highlights

Senior Full-stack Developer
Dec 2023 - Nov 202410 months
Project Overview

It offers 401(k) plans for companies that want to provide such benefits to their employees, all directly connected to their payroll provider.

Responsibilities:
  • Maintained good health of prospects onboarding and plans creation, by actively monitoring data and performing engineering support for customer requests;
  • Participated in building new onboarding flows that streamlined user experience and effort for users to create new 401(k) plans, increasing new customers acquisition by 15%;
  • Experimented with new features and user flows through A/B testing and data analysis, deprecating old flows that have lower performance;
  • Increased code quality, test coverage, and code documentation, improving engineering performance for the team;
  • Built features and new code architectures collaboratively through pair programming and code reviews.
Project Tech stack:
React
Ruby on Rails
Ruby
Sidekiq
MySQL
NX
Apollo GraphQL
GraphQL
Tailwind CSS
Senion Full-stack Developer
Oct 2021 - Nov 20232 years
Project Overview

It's a platform that connects nurses with job opportunities that fit their skills.

Responsibilities:
  • Built back-end, front-end, and mobile applications for the marketplace;
  • Architected new features within the Growth team, aiming at increasing the number of active users on the platform;
  • Contributed to project definition, scope analysis, system development and maintenance, unit testing, and technical refinement;
  • Handled code reviews, testing, deployment, system monitoring, and ongoing support for various systems;
  • Increased daily new user entry on the platform by about 30% with this project and various optimizations for SEO and structured data for Google Jobs Search;
  • Mentored new team members, aiming at spreading best development practices and code quality.
Project Tech stack:
React
Next.js
i18next
Ruby on Rails
Ruby
Sidekiq
PostgreSQL
Apollo GraphQL
ElasticSearch
Material UI
Tailwind CSS
Senior Full-stack Developer
Apr 2018 - Oct 20213 years 6 months
Project Overview

It's a traditional supermarket chain with a loyalty program and engaging content related to food and cooking.

Responsibilities:
  • Built both back-end and front-end parts of e-commerce apps for supermarket companies, from the initial idea to development and ongoing maintenance;
  • Worked on improving the website’s front end to make it look better and easier to use, teaming up with designers to build a modern and responsive layout;
  • Optimized SEO for the company's e-commerce app by refactoring the Next.js codebase, improving performance by 300% through server-side rendering, static site generation, and advanced on-page strategies.
  • Handled bug fixes, testing, and system improvements within agile teams to enhance architecture and project outcomes;
  • Monitored metrics and indicators, identifying desired objectives and activities to achieve them;
  • Conducted code reviews and mentored junior developers through pair programming and code reviews.
Project Tech stack:
React
Next.js
Apollo GraphQL
Relay
Styled-components
Tailwind CSS
Ruby
Ruby on Rails
Elixir
Phoenix
MySQL
Algolia
Senior Full-stack Developer
Oct 2017 - Mar 20191 year 4 months
Project Overview

It's a professional network focused on German-speaking countries. It offers a B2B platform for premium members, advanced search and matching, light CRM, and premium benefits, like bulk messaging.

Responsibilities:
  • Developed new application for premium users with custom and complex Boolean searches and an automatic matching system based on user preferences;
  • Collaborated closely with product teams and designers to create an interactive and experimental application;
  • Implemented systemic and architectural improvements in user data streaming in a microservices architecture;
  • Designed new functionalities for existing systems, with monitoring of tests, final user approval, and identification of possible new technologies for existing systems;
  • Developed matching algorithms using ElasticSearch to connect users according to their selected objectives.
Project Tech stack:
React
Ruby
Ruby on Rails
ElasticSearch
RabbitMQ
Docker
Kubernetes
CSS
Styled-components
Sidekiq

Education

2022
Decentralized & Distributed Development - Blockchain, DLTs & Interoperability Engineering (APIOps)
MBA
2007
Graphic Design
Bachelor

Languages

Portuguese
Advanced
English
Advanced

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