Gemini

Senior Software Engineer, Predictions (Mobile)

New York, New York; Miami, Florida; Remote (USA) · Senior

Sponsorship not specified$140k-$200kDetected 12 days ago

JavaScriptSwiftKotlinReactReact NativeSwiftUIJetpack ComposeCode ReviewgRPCWebSocketsA/B TestingCollaboration

About the role

Senior Software Engineer (Mobile)
You'll work closely with product, design, backend, and compliance to bring new contract types (binary, range, combo) to market on mobile and drive activation and retention for a fast-growing product line.

Build and maintain the Predictions mobile trading experience end-to-end: market browsing, order placement, portfolio views, and settlement flows.
Collaborate with backend engineers on gRPC and WebSocket integrations that power live trading surfaces.
Create reusable, well-tested UI components shared across Predictions and the broader Gemini mobile app.
Partner with product and design to shape mobile-specific UX for new contract categories (weather, economics, crypto, sports) and features like combo contracts and range contracts.
Scope and implement solutions independently, making informed architecture decisions and tradeoffs around native vs. JS boundaries.
As a Senior Mobile Engineer on the Predictions team, you'll own the mobile experience for Gemini's CFTC-regulated prediction markets exchange.
You'll build and ship trading interfaces for event contracts - from order entry and position management to real-time market data - within Gemini's React Native app.

Strong proficiency in TypeScript.
Expertise in unit and integration testing for mobile.
Comfort working in a regulated environment where changes require rigor and auditability.

Experience with financial or trading applications (orderbooks, charting, position management).
Familiarity with Expo, EAS, and OTA update strategies.
Experience with native module authoring (Swift/Kotlin) or SwiftUI/Jetpack Compose embedding via Expo Modules API.
Exposure to gRPC, WebSockets, or similar real-time transport protocols.
Experience with performance analysis tooling (Flipper, React DevTools profiler, native instruments).
Prior work at a fintech, exchange, or other regulated product environment.
It Pays to Work Here
Competitive starting pay

The base salary range for this role is between $140,000 - $200,000 in the State of New York, the State of California and the State of Washington.
When determining a candidate's compensation, we consider a number of factors including skillset, experience, job scope, and current market data.

As a publicly traded company, Gemini is poised to accelerate this vision with greater scale, reach, and impact.
This range is not inclusive of our discretionary bonus or equity package.

Gemini is a global crypto and Web3 platform founded by Cameron and Tyler Winklevoss in 2014, offering a wide range of simple, reliable, and secure crypto products and services to individuals and institutions in over 70 countries.
Our mission is to unlock the next era of financial, creative, and personal freedom by providing trusted access to the decentralized future.
We envision a world where crypto reshapes the global financial system, internet, and money to create greater choice, independence, and opportunity for all - bridging traditional finance with the emerging cryptoeconomy in a way that is more open, fair, and secure.
The Department: Predictions
In the United States, we offer a hybrid work approach at our hub offices, balancing the benefits of in-person collaboration with the flexibility of remote work.

Equal Opportunity is the Law, and Gemini is proud to be an equal opportunity workplace.
If you have a specific need that requires accommodation, please let a member of the People Team know.

al employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status

This listing is sourced directly from Gemini's careers page and normalized into a canonical job model.