Codeminer42 - The software development boutique for your company

FREAKING AWESOME This is our Lastname
"firmitas, utilitas, venustas" Execution is Key
  • Blink Bid

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

  • iFood

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

  • Adaptativa - FUVEST

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

  • Riot Games

    League of Legends Tournament Management Plataform Site - Joga Junto.


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

  • Walljobs

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

  • Consulta Remédios

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

  • eduK

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

  • Vote na Web

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

  • Cidade Democrática

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

  • 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.


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

  • Revmob

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

  • A Lavadeira

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

  • Dinda

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

  • Leroy Merlin

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

  • Bidu

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

  • 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.


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.

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

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