iOS Developer
About this role
We’re searching for iOS Developers who care about more than code — you care about building products that last. If Swift feels like second nature, you appreciate clean architecture, and enjoy shaping apps used by real people every day, this might be the role for you.
🚀 Why Onoff?
At Onoff, we’re making telecom smarter and simpler. We’re a profitable SaaS company with big ambitions, and mobile development is at the core of everything we do. Joining us means contributing to a product with global reach, while working in a team that values collaboration, balance and real impact.
💡 Make an Impact – Your code supports communication for people worldwide.
📈 Room to Grow – Learn, improve and take on more responsibility over time.
🌍 Flexibility – A balanced hybrid setup, combining office collaboration with remote work opportunities.
💰 Fair Compensation – We reward skills and dedication.
🏖 Extra Time Off – Because good work requires rest.
🩺 Private Health Plan – We’ve got you covered.
✈️ Travel Budget – Recharge and return with new energy.
📚 Keep Learning – We encourage curiosity with courses and conferences.
🎉 Great Culture – Flat hierarchy, open communication, and a friendly, supportive team.
🔧 What You’ll Be Doing
Developing and maintaining features in the Onoff iOS app.
Debugging and resolving issues raised by QA or users.
Collaborating with backend, product, and design teams to deliver features end-to-end.
Participating in code reviews and knowledge-sharing with the team.
Contributing to a large-scale product where long-term stability matters.
🛠 What You Bring
✨ Swift experience and an understanding of iOS frameworks & app architecture.
✨ Pragmatic approach: focus on workable solutions, avoiding overcomplicating.
✨ Patience and collaboration: committed to long-term projects and comfortable with routine tasks.
✨ Proactive problem-solving, taking ownership and communicating clearly.
✨ A natural team player mentality, thriving in cross-functional collaboration.
Bonus points for:
⭐ SwiftUI, UIKit
⭐ Experience in telecom, SaaS or large-scale apps.
👉 Ready to help shape the future of mobile communication?
Send us your CV 📩 and let’s build something meaningful together.
Company at a glance
At OnOff, our goal is to reinvent the user experience in the world of telecommunications.
We are a team based in Paris and Tallinn, made up of 100 passionate people from around the globe.
In 2014, we launched the first version of a mobile app that finally allowed multiple phone numbers on a single device with the same SIM card. Since then, we’ve added numbers from more than 30 countries, as well as calling capabilities to nearly 150 destinations.
We’re also very proud of our “Onoff Business” solution, which streamlines fleet management by assigning professional lines directly to your employees’ smartphones.
Top Benefits
- Fair Compensation
- Extra Time Off
- Private Health Plan
- Travel Budget
- Courses And Conferences
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