Codeminer 42's logo

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

    League of Legends Tournament Management Site - Joga Junto

  • 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.


    Integrating with existing offshore teams (Rails/legacy/improvement)

  • Rubyconf Brasil

    Co-Founder Fabio Akita organizes the annual Rubyconf Brasil since 2008. This 9th edition in 2016 brings almost 90 speakers from all over the world and more than 1,000 developers

  • Revmob

    App and Devops optimisation. Billing reduction of at least 50% (Rails, JRuby, Node.js)

  • Consulta Remédios

    Maintenance of the current website and finishing the development of the new one. Taking care of the transition.

  • Westfield Labs

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

  • eduK

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

  • Dinda

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

  • Cidade Democrática

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

  • Blink Bid

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

  • A Lavadeira

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

  • Leroy Merlin

    New Front-end development (example: Inspire-se section, responsive HTML5/CSS3/JS)

  • Walljobs

    Rescuing, finishing, releasing and maintaining this fledgling Job Board website

  • Adaptativa - FUVEST

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

  • Vote na Web

    App and Infra optimisation. Both performance, stabilisation and outstanding bug fixes (Rails, AWS)

  • Bidu

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


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

  • iFood

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

  • Locaweb's New Payment Gateway

    Brand new highly scalable payment gateway built from scratch for Locaweb (Ruby/Goliath/infrastructure/greenfield project)


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

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


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

Lady Blessington

Codeminer 42 is a Brazilian software boutique focused in delivering the best value for its customers. We started the operation at September of 2011 and so far we have expanded to 11 different cities in Brazil with the best professionals we can find.

Our speciality is Ruby on Rails web development and it's surrounding ecosystem - that 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, processes automation.

We have worked for small and big companies, we offer an assortment of services that goes from greenfield project development life cycle, legacy projects rescue, 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.

Sometimes you already have an internal core team that needs to tackle more than they can implement until certain deadlines. The best thing to do is divide to conquer. Leave the core team doing the core software and add us to help on new features, extensions, 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 specially useful to understand how your internal software development processes and outcomes are. The idea behind a technical assessment is to give you enough information so you understand it's life cycle, productivity levels, quality levels of the software being produced, and recommendation on how to improve.

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.

Companies that are terminating with another 3rd party and need a reliable partnership.

Who we are

We are miners.

Deliver value in any 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 achieve.

  • Vanessa Oliveira
    Assistente Administrativa
  • David Silveira
  • Fladson Gomes
  • Rodrigo Boniatti
  • Bruno Castanho
    O Cara do Kotlin
  • Rauan Assis
  • Marcle Rodrigues
  • Augusto Foletto
  • Iago Dahlem
    "Developer and open source enthusiastic"
  • Diego Thomaz
    Apreciador de cervejas
  • Marcelo Alexandre
  • Vitor Talaia
    Formula One Fan
  • Tiárli Oliveira
    "Tiárli" Brown
  • Alessandro Dias
    Comentador de PR
  • Fabrício Albarnaz
  • Patricia Bastos
    git rebase -i HEAD~1 "rspec you must!"
  • Elma Santos
  • Alceu Medeiros
  • Will Soares
  • Samuel Flores
    CDD - Coffee Driven Development
  • Thiago Araújo
  • Gabriel Müller
  • Fabio Akita
    git push --force
  • Tauan Tathiell
    "Trust me I'm the doctor"
  • Bruno Amaral
    Performing Site Reliability Engineering
  • Leonardo Negreiros
    Dev e Surfista de marola
  • Matheus Lima
  • Sérgio Murilo Varela
  • Lucas de Assis
    Developer, Committed to people
  • Rodrigo Virgílio
  • Paulo Diovani
    “I’ä! I’ä! Cthulhu Fhtagn!”
  • Juliana Negreiros
    Batmão nas horas vagas
  • Wender Jean
  • Hayssa Costa
  • Gabriel Sobrinho
  • Felipe Soares
    Apreciador de Abacaxis
  • Halan Pinheiro
    Ninja Padeiro (Louco)
  • Lairton Lelis
    Morango do cerrado
  • Jullia Saad
    Front-end developer
  • Thiago Alves Luiz
  • Vinicius Almeida
    For the HORDE!
  • Sarah Raquel
    Food enthusiast and developer
  • Ivan Stumpf
    Developer e apreciador de cervejas
  • Cyrus Cavalcante
    Cyrus Black - Order of Phoenix
  • Júlio Cesar
    Junk food enthusiast
  • Carlos Lopes
    Señor Developer Campineiro
  • Felipe Nolleto
    "expect( life ).toBe( awesome )"
  • Alexandre Karpinski
    Dev 【=◈︿◈=】
  • Bruno Castro
    // TODO : Write a cool description about me
  • João Mangilli
  • Adriano Costa
    El matador de bugs
  • Hélio Junior
    "Keep calm and I'm developer"
  • Romulo Storel
  • Lucas Gois
  • Moisés Rodrigues
    Dev e abridor de mares nas horas vagas
  • Diêggo Faustino
    Tto infinity and beyond
  • Ronaldo Araújo
  • André Pereira
  • Maychell Oliveira
  • Renan Bona
  • Abner Alves
  • Talysson Oliveira
    JavaScript Defense Attorney
  • Guilherme Moreira
    Faz código e doces, encomende o seu
  • Matheus Azzi
    Filósofo de bar e troll
  • Paulo Chaves
  • Rodrigo Abilheira
    Combinado não é caro
  • Felipe Flores
  • Ricardo Eihara
  • Jonatas Rancan
    Motociclista e Developer
  • Jonathan Bruno
  • Juarez Lustosa

Visit us

São Paulo

+55 11 3729 1422
Av. Roque Petroni Junior, 850 conj 52 e 53 - Torre Bacaetava - Jardim das Acácias
São Paulo - SP - Brasil - CEP 04707-000


R. Paulo César Fidélis, 39 - Sala 610 - Lot. Res. Vila Bella
Campinas - SP - Brasil - CEP 13087-727

Novo Hamburgo

Av. Pedro Adams Filho, 5573 - Ed. Fin-Hab, Sala 1006 - Centro
Novo Hamburgo - RS - Brasil - CEP 93510-135


Av. Amintas Barros, 3700 - Corporate Tower Center, Salas 1807/1808/1809B - Lagoa Nova
Natal - RN - Brasil - CEP 59075-250


Av. Izoraida Marques Peres, 256 - Ed. Av. Paulista, Sala 53 - Parque Campolim
Sorocaba - SP - Brasil - CEP 18048-110


Av. Jockey Clube, 299 - Ed. Euro Business, Sala 1409 - Joquei Clube
Teresina - PI - Brasil - CEP 64049-240


Av. São Francisco de Assis, 647 - Centro Comercial Mariah, Sala 09 - Jundiaí
Anápolis - GO - Brasil - CEP 75110-810


Av. T-10, 208 - Ed. New Times Square, Sala 802 - Setor Bueno
Goiânia - GO - Brasil - CEP 74223-060


Rua José Pedrosa Machado, 48 - Sala 4 - Central Park
Batatais - SP - Brasil - CEP 14307-106


Av. Vereador Rubéns Siqueira Ribas, 3171 - Valley Coworking - Santa Cruz
Guarapuava - PR - Brasil - CEP 85015-080

Santa Maria

Rua Alberto Pasqualini, 121, sala 604, Centro
Santa Maria - RS - Brasil - CEP 97015-010