Codeminer 42's logo

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

  • Adaptativa - FUVEST

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

  • Leroy Merlin

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

  • Locaweb's New Payment Gateway

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

  • Revmob

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

  • Bidu

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

  • Riot Games

    League of Legends Tournament Management Site - Joga Junto

  • A Lavadeira

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

  • Walljobs

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


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

  • 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)

  • Cidade Democrática

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


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

  • iFood

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

  • Dinda

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

  • 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.

  • Blink Bid

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

  • Vote na Web

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

  • Consulta Remédios

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


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.

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


"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.

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

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