Senior Swift Engineer (Full-Time)

Remote, Worldwide

Pairio is a native macOS app for real-time screen sharing, built for people who work together: founders, designers, developers, product people. Not another meeting tool, but a collaboration tool. You share your screen, your teammate draws on it, takes over your keyboard. One click to call, no link, no invite.

We have ambitious plans for where it goes next, and we need help getting there.

What you’ll work on

Pixel-perfect screen sharing. Keeping text crisp across capture, encode, transport, and rendering while balancing quality, frame rate, and responsiveness on real-world connections

One-click calling. Making it feel instant: presence, signaling, WebRTC negotiation, and seamless audio/video setup

Drawing on screen and remote control. Live annotations, cursor sharing, keyboard and mouse input mapped precisely across machines

Privacy. App masking, encrypted connections, and making sure users always control what they share

Performance. Reducing latency at every layer so collaboration feels like sitting next to each other

Testing. We ship with confidence, not crossed fingers

The Swift app talks to a Rails backend. Bonus points if you’re comfortable on both sides

Who you...