Senior iOS Developer

and the job listing Expires on January 28, 2026

Hi there!
We’re Tri Sphere Applications
, a fully volunteer-powered startup building meaningful mobile apps and games — from helping kids sleep better with interactive bedtime adventures, to AI-powered tools that connect jewelers with customers, and wellness trackers that encourage sustainable living. We’re on a mission to make tech that feels good — and does good.

Right now, we’re looking for a Senior iOS Developer to join our team and help lead the charge on our growing Swift-based app portfolio.

• Lead development on iOS apps using Swift and modern frameworks like SwiftUI
  , Combine
  , and Firebase
• Mentor junior devs, contribute to code reviews, and help structure clean, maintainable architecture
• Collaborate closely with product designers, QA testers, and animators to build fun, reliable, and polished experiences
• Own end-to-end features — from planning and prototyping to App Store submission
• Stay current on iOS trends, new APIs, and best practices — and bring ideas to the table!

• Moon Leaping – A bedtime game where kids help a cow jump over the moon, designed to gently guide them to sleep
• Gem Genius AI – A smart assistant that helps jewelers and shoppers evaluate, compare, and showcase jewelry
• Eco Habit Tracker – Encourages daily eco-friendly habits through a virtual garden, leader board, and real-world donations
• My First PC Build – An educational app teaching teens how to build a PC, complete with quizzes and simulations
• H2
  
  Penguin – A smart-watch app with a cute penguin that reminds you to hydrate during the day

• 3+ years of experience with iOS development in Swift
• Strong understanding of SwiftUI
  , UIKit, Combine, and async code
• Experience integrating Firebase
  , REST APIs, in-app purchases, and push notifications
• Solid Git habits and experience with CI/CD tools
• A collaborative mindset, willingness to mentor, and genuine excitement for creative apps
• Bonus: familiarity with animations, accessibility, or game development

• A real leadership role on a growing team of kind, skilled creators
• A chance to ship apps and games that actually help people — and see your work on the App Store
• Volunteer experience that actually builds your portfolio and résumé
• The chance to mentor others and grow in both technical and leadership directions