CARDFREE is an exciting start-up with seasoned professionals driven to push the mobile experience forward. We come from different backgrounds - from large merchants to mobile vendors and payment companies - but are united in our mission to create the coolest, most ground-breaking mobile commerce apps in the industry.

Please see below for the current list of open positions. If you don't see anything that fits your skills and you are passionate about mobile, merchants or changing the way people interact at the point-of-sale (or hopefully all three), send us your resume. We are always looking for talented team members to come join the fun. We offer a flexible schedule with generous paid time off for all your hard work along with competitive pay and health benefits, as well as the opportunity to grow professionally.

Current open positions

Software Configuration Manager

This Software Configuration Manager will provide technical leadership in the areas of source code version control, configuration management, deployments and releases. This person drives the delivery of high-quality reliable and repeatable build and release processes for platform application development. The Software Configuration Manager acts as a mid-level Engineer/Developer and applies necessary skills to meet business objectives. As our SCM based in our San Francisco or Denver office, you will have the opportunity to contribute in many different areas of the company and help develop our product from the ground up!

Primary Responsibilities:
  • Performing assessments, developing and/or improving build and release strategies
  • Defining, documenting, coordinating, executing and validating application of SCM methodologies
  • Develops and maintains deployment and release structures
  • Develops SDLC strategies for software control to fit best practices, standards and business objectives
  • Environment management - Manages change control for software and hardware configurations
  • Assists Development teams with source code management (organization and structure)
  • Maintenance and administration of distributed source control systems
  • Build and Release engineering - Manages the process and tools used for builds
  • Ensures the SDLC environmental changes are versioned and synchronized for repeatable functionality
  • Performs scheduled release procedures with roll-back readiness
  • Process management - Ensures adherence to the organization's SDLC development process
  • Proven experience in start-up and fast moving high growth companies
  • Understands governing principles and adheres to software change control procedures
  • Keen problem solving ability and industrious nature to hunt down answers and resolve issues
  • Ability to work in coordination with the efforts of a team of designers, developers and QA personnel
  • Must be comfortable working in both Windows and Linux operating systems as well as data center and cloud environments.
  • Proficiency in creating and maintaining SDLC processes across multiple environments
  • Experience with continuous integration and software configuration management patterns
  • Ability to handle multiple projects and tasks, maintaining a high degree of accuracy
Additional Responsibilities:
  • Maintains monitoring and rapid response support for Production systems
  • Maintains incident defect tracking with cause/resolution history
  • Maintains security for critical systems and environments
  • Provide training for internal groups related to SCM and SDLC requirements
  • Writes and maintains written procedures for release management
  • Creates and maintains self-service build mechanisms and release automation
  • Works closely with QA, project management, and development teams to validate functionality, define, manage, and control software data elements.
  • Assists the support, security, operations, and infrastructure team with various tactical and system activities as well as identifying and tracking reported issues.
  • Other duties as assigned
Additional experience a plus with basic related technologies as shown below:
  • DNS/Domain/Mail routing and configurations
  • Web/Application Load Balancer operations
  • Network and Firewall operations
  • VMWare Infrastructure and Active Directory operations
  • Experience with Linux and Microsoft Windows administration and operations
  • Experience with MS SQL Server and MySQL Server database administration
  • Working knowledge of data center and cloud operations

Please send your resume and cover letter to

Mobile Developers (iOS & Android)

Are you always thinking up ways that mobile apps can be improved? Do you enjoy hackathons, mashups and anything that pushes you to think differently? Do poorly designed mobile apps make you kinda sad? You are not alone. Come join a seasoned team with experience deploying two of the largest mobile payment apps – with over 10 million installs.

The basics:
  • 5+ years professional development experience
  • Minimum 2-3 years experience developing mobile apps
  • Ideally have submitted 2+ apps to app stores with good adoption. Please indicate your role
  • Proven track record of building apps with great user experience & interface
  • Experience with Objective C, C++ and Cocoa or Java and Android SDKs
  • Experience integrating with web services i.e. RESTful APIs and JSON
  • Ability to review code and write unit tests
  • Exceptional problem solving and communication skills
  • Good attention to detail
  • You're interested in mobile commerce and want to help shape the industry
  • You get excited when you see customers using your applications
  • You enjoy working in agile and collaborative environment
  • You care about great design and user experience
  • Strong self-management skills requiring minimum direction

If this sounds like you, please send a quick note with links to your apps and your resume to

Junior .Net Developer

As our Junior .NET developer and key member of our team, you will be working on a team to help build, improve, and grow all things API and server side that support our mobile apps. This position is open to our main San Francisco office, but greatly preferred in our Denver office. You will be hitting the ground running and help build something meaningful, that will be used by A LOT of people. Our safety nets are on backorder!

The basics:
  • 1+ years professional development experience
  • Proven track record of building flexible, secure, and scalable solutions
  • Solid C# skills and experience developing RESTful APIs, ideally with the ASP.NET MVC Web API framework
  • Experience integrating with web services i.e. Facebook, Twitter and other SOAP and RESTful APIs
  • Skilled in relational database design, development, and tuning using MySQL or Microsoft SQL Server
  • Ability and desire to review code and write automated tests-Exceptional problem solving and communication skills
  • Good attention to detail
  • Commitment to Test Driven Development
  • Teach something to the rest of us. We like to learn too!
  • You're interested in mobile commerce and want to help shape the industry
  • You get excited when you see customers using your applications
  • You enjoy working in agile and collaborative environment
  • Strong self-management skills requiring minimum direction
  • Experience using GitHub, Jira, Confluence, Jenkins and other team tools
  • Familiar or experienced with MongoDB

If this sounds like you, please send us your cover letter and resume and any applicable links (GitHub, LinkedIn, etc) to

Web Developer

We are looking for a talented web developer to drive the web component of our omni-channel commerce platform. In this role you will develop critical tools for our customers to engage millions of consumers. If you enjoy being a part of a hyper-focused team that loves creating highly usable, quality products, we'd love to hear from you.

In this role, you will:
  • Collaborate with platform developers, designers, and product owners to develop new features and create the best web experience possible for customers
  • Be a thought leader as it relates to web user interface development
  • Maintain and enhance existing functionality
  • Ensure quality code through test automation
  • Ensure performance and scalability of web applications
About you:
  • You are passionate about technology, innovation, and development
  • You are a great communicator and enjoy collaborating with cross-functional teams to solve complex problems and design elegant solutions
  • Ruby, Ruby on Rails (2+ years)
  • Git, GitHub
  • JavaScript, CSS3, HTML5, HAML, SASS
  • JQuery, Backbone.js, node.js
  • Automated testing: Cucumber, Selenium, etc.
  • Amazon, Heroku, Azure, etc.
  • Familiarity with SQL(MSSQL, MySQL, etc.) and NoSQL(MongoDB, etc.)
  • Experience with mvc frameworks
  • RESTful APIs
Bonus Points:
  • Experience with distributed caching
  • Build automation such as Jenkins
  • Other Languages: Python, PHP, C#, Java

If this sounds like you, please send over your cover letter and resume with any applicable links stating your qualified experience to