Critical Mass

Sunnyvale, CA 

iOS Developer- Apply here!

The Critical Mass technology team is looking for an inspired, motivated iOS developer to join our team. We are an experience design agency with a focus on the customer, which means that multi-discipline collaboration and prototyping are at the heart of our process. 

The role will be working on-site with our client in a multi-disciplinary team and will be responsible for rapid prototyping. We thrive on a balance of collaboration and focused time which means you won’t be spending all your time turning Sketch into code – rather you’ll be a key part of the design and prototyping process. Critical Mass is a creative company at heart that uses technology to deliver amazing experiences to our clients.  We have a lot of fun and hope you’ll join us. 


  • Rapid prototyping while delivering reusable code, using modern Swift
  • Delivery clean, modern interactions and transitions
  • Deliver solutions balancing technical and business requirements. Experience has taught you what works. Your long history in the game helps you choose the best mix of proven and cutting-edge technology
  • Interacting with project teams to understand business and user requirements
  • Maintaining high coding standards and practices and exercise quality control on all aspects of iOS development
  • Problem-solving in all areas of mobile development 
  • Ability to work in a client facing setting


  • 5+ years demonstrated development experience
  • 2-3+ years experience in iOS development
  • Demonstrable experience developing in Swift
  • Developing in multiple iOS architecture models
  • A great eye for interaction design and animations

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