Frontend Engineer, Growth & Engagement Team

Phantom is the modern money app used by tens of millions around the world. Our product combines everything people need to manage, spend, and grow their money in one simple, intuitive experience. Phantom brings all the control and flexibility of crypto-powered finance, without unnecessary complexity, into mainstream consumer finance. By combining industry-leading security with thoughtfully designed tools, Phantom makes powerful financial tools feel approachable and easy to use. This focus on speed, control, and user experience has fueled rapid growth, with a community of 20M+ people, reaching #1 in the Google Play Store finance category, and consistently ranking as a Top 50 app across all categories, alongside some of the most recognizable consumer technology platforms in the world. Phantom is revolutionizing the way millions of people interact with the crypto ecosystem. Our self-custodial wallet offers a seamless, unified experience for managing accounts and tokens across Solana, Bitcoin, Ethereum, and Polygon, empowering users with a single, convenient solution. By integrating cutting-edge security features and launching innovative tools for an enhanced personalized user experience, Phantom is able to provide a next-generation, safe and easy to use self-custodial wallet for everyone. This strategy has allowed Phantom to achieve significant milestones including surpassing 16 million MAU’s, reaching #1 in the Google play store finance category, and consistently trending as a Top 50 app across all categories, right next to X, PayPal, Coinbase, and ChatGPT.

- **Experimentation Platform** - Design, implement, and maintain a feature-flag and A/B-testing framework that supports rapid launch, metric collection, and automated rollback of growth experiments. - **Service Development** - Build and scale microservices for key growth features: referral program APIs, action-card engine, push-notification orchestration. - **Instrumentation & Analytics** - Instrument all services with real-time metrics, tracing, and logging; partner with Data teams to ensure clean event schemas and dashboarding. - **Operational Excellence** - Own on-call rotations for growth services, define SLAs, write playbooks for incident response, and drive post-mortem action items. - **Cross-Functional Collaboration** - Partner closely with Product, Frontend, Design, and Analytics to translate hypotheses into backend solutions, remove blockers, and deliver end-to-end experiments. - **Performance & Reliability** - Ensure all growth systems meet sub-100ms latency targets under load and maintain ≥99.9% uptime.

- **7+ Years of Backend Experience**: Demonstrated success in building large-scale, high-availability systems in **Node.js**, **TypeScript, NestJS** (or similar frameworks). - **Web3/Crypto Knowledge**: Familiarity with on-chain data, wallet integrations, or decentralized application patterns is strongly preferred. - **Strong System Design & Architecture Skills**: Ability to translate product requirements into scalable, maintainable solutions, with a keen eye for performance trade-offs and fault tolerance. - **Leadership & Communication**: Experience mentoring engineers, leading technical initiatives, and collaborating effectively with cross-functional teams.

- Competitive salary and equity - Comprehensive insurance (medical/dental/vision) — 100% covered - Stipend for your ideal remote set-up - Flexible hours and a supportive remote environment - Unlimited vacation: Take time when you need it (and we really mean it!) - 401(k) retirement plan - Monthly wellness benefit - Weekly meal benefit - Global off-sites

Phantom is a San Francisco-based company that develops a self-custodial, multichain cryptocurrency wallet for managing tokens, staking, swapping, storing NFTs, and exploring web3. It supports networks like Solana, Ethereum, Polygon, and Bitcoin, with features including Ledger integration, scam detection, and anonymous onboarding, serving millions of users.[1][2][3][4]