iOS Engineer - BigUp

About Us

BigUp is building a new category of entertainment:

Predictainment

. Attention has shifted from TV networks to creators, and prediction markets have transformed how audiences engage with live events. We're building a platform that lets any creator launch their own TV network — think Twitch meets Kalshi.

Creators host livestreams supported by proprietary AI agents that handle production, clips, stats, and graphics, while fans watch and predict alongside their communities in a multiplayer experience.

We're a small, scrappy team of builders from Stanford, MIT, Circle, and Microsoft, backed by top-tier VCs and industry leaders from OpenAI, DraftKings, Whatnot, and Amazon Studios. We move fast, ship constantly, and figure things out as we go — there's no playbook for what we're building.

We just came off a successful pilot and we're now racing into new markets — starting with NFL and college football, then non-sports verticals this fall. We need an

iOS Engineer

who wants to build something from the ground floor, not maintain something that already exists.

Job Description

As our iOS Engineer, you

are

the iOS team — the app is the primary surface through which every user experiences BigUp, and it's yours to build. You'll work shoulder-to-shoulder with design and backend engineering, make architecture calls with real consequences, ship releases constantly, and watch your work reach millions of users almost immediately.

There's no bureaucracy, no six-week release cycles, no waiting for sign-off — just you, the codebase, and a product that needs to be great fast.

If you want a role where you're handed a spec and a roadmap, this isn't it. If you want to build the thing from scratch, set the standards yourself, and have real ownership over a product at an inflection point, keep reading.

Responsibilities

• Own the BigUp iOS app end-to-end — architecture, UI, App Store releases, all of it
• Build fast without cutting corners on quality or performance
• Integrate live video playback and real-time data feeds (prediction markets, live stats, overlays) — often before anyone's fully speced out how they should work
• Work directly with backend engineers to design APIs as we go, not after the fact
• Keep the app fast and reliable as our user base grows week over week
• Set the bar for testing, code quality, and release process — because right now, you're the one who gets to decide what that bar is

Qualifications

• Bachelor’s or Master’s degree in Computer Science or a related field
• 2+ years shipping real iOS apps
• A track record of building things on your own time — side projects, indie apps, open source, hackathon wins, whatever it is. We care much more about what apps you've built unprompted than which specific frameworks you've used.
• Comfortable picking up new tools fast — Swift/UIKit/AVFoundation/Expo experience helps, but we're more interested in how quickly you learn than a checklist of technologies
• Comfortable with WebSockets and real-time data; live video / HLS experience is a big plus
• Obsessive about pixel-perfect UI — you notice the things other people don't
• Genuinely energized by ambiguity and fast pivots, not just tolerant of them
• You can communicate clearly and move quickly without a lot of process around you
• You're an actual sports fan or prediction market user — this should feel like building for yourself, not building for a market you read about

The Perks

• Competitive salary + meaningful equity — real ownership in a company at an inflection point
• A small, high-caliber team from the world's leading tech and research institutions
• The chance to build a category-defining product from near-zero, not maintain someone else's
• Health insurance
• Generous PTO

How to Apply

• DM us to something impressive you've built (GitHub, App Store link, portfolio, etc.) — we care way more about this than your resume.
• Share an interesting fact about your favorite creator and why you'd like to see them on BigUp.