Codeminer42 - The software development boutique for your company

FREAKING AWESOME This is our Lastname
"firmitas, utilitas, venustas" Execution is Key
  • Riot Games

    League of Legends Tournament Management Plataform Site - Joga Junto.

  • Adaptativa - FUVEST

    Joint campaign for FUVEST exam simulator (2014) (Rails/greenfield/infrastructure).

  • iFood

    Front-end development of the new iFood help system using React.js and Typescript.

  • Riot Games CBLOL app

    iOS and Android apps built with React Native for players to check out the Brazilian LoL Championship. It's been installed hundreds of thousands of times already.

  • Leroy Merlin

    New front-end development, implemented responsive behavior (example: Inspire-se section, responsive HTML5/CSS3/JS).

  • A Lavadeira

    Zero friction laundry delivery system, the Netflix for laundry (Rails/greenfield project).

  • Bidu

    Maintenance and Improvement of existing startup product (Rails/maintenance).

  • Blink Bid

    Website for creative professionals built with Ruby on Rails, hosted on Heroku. We helped iron out the structure and add new features.

  • Westfield Labs

    One of the largest projects we managed, with several teams building Rails-based APIs used by many of Westfield Mall's services, including product catalogue, consumer management, smart parking and more.

  • Consulta Remédios

    Maintenance of the current website, development of a new one, and handling of the transition between them.

  • Vote na Web

    App and Infrastructure optimization. Both performance, stabilization and outstanding bug fixes (Rails, AWS).


    Integration with existing offshore teams (Rails/legacy/improvement).

  • Cidade Democrática

    Project rescue and revamping of the entire community site (Rails/legacy/upgrade and improvements).

  • Dinda

    Flash Sales e-commerce companion for (Rails/greenfield project).

  • Walljobs

    Rescue, finishing up, release and maintenance of this fledgling Job Board website.


    Maintenance and Improvements over the legacy website (Java/Infrastructure/Support).

  • eduK

    eLearning portal to replace the legacy Buzzero (Rails/greenfield project).

  • Revmob

    App and DevOps optimization. Infrastructure cost reduction of at least 50% (Rails, JRuby, Node.js).


Every company needs a great set of software applications. We can provide you with the best of breed in terms of productivity, code quality, product life cycle, user experience, efficient processes and team setup. Get to know some of our clients.

  • UOL Pagseguro
  • Présumé
  • Officer Distribuidora
  • Moema Tem
  • Fundação Estudar
  • Semaphore
  • C6 Bank
  • AgroSmart
  • fromAtoB
  • Bicos Online
  • Guide Investimentos
  • Walmart
  • Medicinia
  • Bio Ritmo
  • Instituto Natura
  • Cyanna
  • Vote na Web
  • Cálculo Jurídico
  • Tener
  • Callix
  • Tim
  • Badabum
  • GoDaddy
  • AppHere
  • CotaBest
  • Pipefy
  • Adaptativa
  • Dinda (
  • Solvian
  • GAS Tecnologia
  • Magazine Luiza
  • Mojo Lingo
  • Minuto Seguros
  • ADTsys
  • GuiaBolso
  • Kitado
  • Lumera
  • Revmob
  • Riot Games Brasil
  • Doletinha
  • Leroy Merlin
  • Portabilis
  • Biva
  • Stars Premium
  • A Lavadeira
  • Locaweb
  • InvestMind
  • Editora Saraiva
  • AD Digital
  • Facebook
  • Intensimed
  • Westfield Labs
  • Stone
  • iFood
  • Diagnostycos
  • Amgen
  • Data Folha
  • Consulta Remédios
  • Banco Sofisa Direto
  • eduK
  • cubo
  • Bidu
  • CoinWISE
  • Redpoint e.Ventures
  • Olook
  • Trindade Investimentos
  • iQuilibrio
  • Folha de São Paulo
  • Umanni
  • 99jobs
  • BlinkBid
  • Lumini
  • Cidade Democrática
  • Tile App
  • NEO4J
  • ESPN Brasil


"Genius is the gold in the mine; talent is the miner who works and brings it out."

Lady Blessington

Codeminer42 is a Brazilian software boutique focused on delivering the best value for its customers. We started operating in September 2011 and so far we have expanded to 12 different cities in Brazil with the best professionals and developers we can find.

Our specialty is Ruby on Rails web development and its surrounding ecosystem, which includes cutting edge new technologies. We are very experienced in delivering all kinds of tech products, such as e-commerce, e-learning, social networks, content management systems and process automation.

We have worked for small and big companies, offering an assortment of services that range from greenfield project development life cycle to legacy project rescues, nearshore outsourcing, and so on.

If you want to have not only a great web application in production but also improve your software development processes and quality assurance, we can help.

What we do


You will have a predictable cost and an expected delivery date and we will manage the implementation using agile best practices. The scope is variable and we frequently reassess what's to be built, so you have the software you really need at the end.

Ideal for companies that don’t have an internal development team.

Team Augmentation

We identify the best team to help you achieve your goals.

You might already have an internal core team that needs to tackle more than they can implement until certain deadlines. The best thing to do in this case is to divide and conquer. Leave the core team doing the core software and bring in some help from us on new features, extensions and maintenance, in order to meet the required deadlines. We will work within your agile processes, together with your team.

Ideal for companies with an established internal team.

Technical Assessment

You have a big operation and want to make sure you're using the best practices.

This is especially useful to understand how your internal software development processes and outcomes work. The idea behind a technical assessment is giving you enough information so you understand your life cycle, productivity levels and quality levels of the software being produced. With this, you will also get advice on how to improve.

Ideal for companies that maintain their own software.

Project Rescue

You want to bring health back to your product.

You already have source code implemented either already in production or not, but you're insecure if it's done in a safe, quality, and/or scalable way and you need to make sure you can keep adding new features and growing your userbase without unfortunate surprises. We can fix your project and bring it back to life.

Ideal for companies that are terminating with another 3rd party and need a reliable partnership.

Who we are

We are miners.

Delivering value in every project is a very hard process. As software developers we strive to deliver not only well written code, but code that delivers real value to each client.

It's not good enough to just be concerned with code for code's sake, but to deliver code that solves real problems and delivers real value. And this is the mission that we, as miners, will keep digging deeper to accomplish.

  • Thiago Alves Luiz
  • Diego Thomaz
    Apreciador de cervejas
  • Matheus Azzi
    Filósofo de bar e troll
  • Moisés Rodrigues
    Dev e abridor de mares nas horas vagas
  • Tiárli Oliveira
    "Tiárli" Brown
  • Alexandre Karpinski
    Dev 【=◈︿◈=】
  • Renan Bona
  • Yuri Delfino
  • Jonatas Rancan
    Motociclista e Developer
  • Iago Dahlem
    "Developer and open source enthusiastic"
  • Luan
    Web Developer, Ruby Lover and Dovahkiin
  • Talysson Oliveira
    JavaScript Defense Attorney
  • Julia Furlani
    Web Developer
  • Adriano Costa
    El matador de bugs
  • Ivan Stumpf
    Developer e apreciador de cervejas
  • Gustavo Valvassori
    Developer ¯\_(ツ)_/¯
  • Jonathan Bruno
  • Maychell Oliveira
  • Fabio Akita
    git push --force
  • Felipe Flores
    eu sou o cara que transforma a vida em código
  • João Mangilli
  • Kim Freitas
    Dev recém convertido
  • Rodrigo Abilheira
    Combinado não é caro
  • Stheffany Hadlich
    Dev absoluta
  • Vanessa Oliveira
    Assistente Administrativa
  • Patricia Bastos
    git rebase -i HEAD~1 "rspec you must!"
  • Gabriel Müller
    Dev Juvenil
  • Lucas Gois
  • Marcelo Alexandre
  • Matheus Lobo
    Dev, professor, aluno e filósofo de bar
  • Carlos Lopes
    Señor Developer Campineiro
  • Marcle Rodrigues
  • André Pereira
  • Alceu Medeiros
  • Augusto Foletto
  • Júlio Cesar
    Junk food enthusiast
  • Alessandro Dias
    Comentador de PR
  • Samuel Flores
    CDD - Coffee Driven Development
  • Halan Pinheiro
    Ninja Padeiro (Louco)
  • Rodrigo Virgílio
  • Felipe Nolleto
    "expect( life ).toBe( awesome )"
  • Rodrigo Boniatti
  • Sérgio Murilo Varela
  • Will Soares
  • Tauan Tathiell
    "Trust me, I'm sleeping"
  • Elma Santos
  • Wender Jean
  • Luiz
  • Juliana Negreiros
    Batmão nas horas vagas
  • Bruno Castro
    // TODO : Write a cool description about me
  • Thiago Araújo
  • Bruno Amaral
    Performing Site Reliability Engineering
  • Andre Luiz
    Estag on Rails
  • Ronaldo Araújo
  • Vitor Talaia
    Formula One Fan
  • Gabriel Sobrinho
  • Fladson Gomes
  • Lairton Lelis
    Morango do cerrado
  • Fabrício Albarnaz
  • Cyrus Cavalcante
    Cyrus Black - Order of Phoenix
  • Romulo Storel
  • Diêggo Faustino
    Tto infinity and beyond
  • Juarez Lustosa
  • Leonardo Negreiros
    Dev e Surfista de marola
  • Abner Alves
  • Paulo Diovani
    “I’ä! I’ä! Cthulhu Fhtagn!”
  • Guilherme Moreira
    Faz código e doces, encomende o seu
  • Hélio Junior
    "Keep calm and I'm developer"
  • Rauan Assis