Senior Software Engineer, Backend

Phantom • Full-time • Remote (Remote) • 12h ago

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 7 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.

Responsibilities

Staff Backend Engineer who blends systems thinking with product pragmatism and a real passion for crypto. You’ll design, maintain, and evolve the backend services and APIs that connect Phantom Cash to blockchains. You understand both client-server architecture and blockchain protocols, and you know how to balance reliability, quality, and speed. You communicate clearly across pods, document rigorously, and elevate the engineering bar through execution and mentorship. Your work will make Phantom Cash feel dependable, seamless, and ready to scale.

Qualifications

Bachelors degree in Computer Science or related technical field or equivalent practical experience
Pragmatic engineering mindset — focuses on results and user impact, not abstract purity.
Proactive and outcome-oriented: anticipates problems, pushes features to completion without waiting for perfect specs.
Strong communicator and pragmatic problem solver - explains complexity simply, favors progress over perfection.
Node.js / NestJS at scale; event-driven design (queues, retries, idempotency).
REST API architecture: versioning, pagination, error models, authentication, rate-limiting.
Full-stack awareness: understands trade-offs of state management (client vs server) and latency budgets.
Distributed-systems fundamentals: concurrency, ordering, retries, data consistency.

Nice to Have

Kubernetes + AWS ops; CI/CD; observability; on-call ownership.
Deep interest in crypto - keeps up with ecosystem changes, wallets, protocols, and security norms.
Previous hands-on experience in crypto or fintech (exchanges, wallets, payment rails, ledgers).
Smart-contract and protocol understanding: knows how on-chain programs interact with off-chain services.
Blockchain integration experience — Solana preferred, EVM acceptable.
Has shipped high-quality products in mature, high-bar engineering organizations.

Why Work with Us

Opportunity

We are a team of experienced builders in the blockchain and crypto industry. Our journey began from users seeking an easy, seamless path to accessing the crypto ecosystem. This passion fueled our exponential growth, allowing us to onboard over 7M+ active users in just over three years; with our user base growing weekly. Our dedication to a secure and seamless user experience has made us the leading wallet on Solana as well as our multi-chain approach enhances our platform's versatility, meeting the needs of a diverse and growing user base. By staying at the forefront of technology and user expectations, we continue to innovate and set industry standards on self-custodial crypto wallets.

There has never been a better time to work in crypto to help shape the future of innovation with a focus around the wallet experience!

First impressions matter: Wallets are responsible for a users first impression with crypto and onboarding new users into crypto. By ensuring that a user has a great first-time experience with crypto, we can help supercharge the growth of the entire ecosystem.
Make crypto easier to navigate: There is no easy way for a user to discover and navigate all that crypto has to offer. Wallets have a unique opportunity to help users not only onboard to crypto but also stay retained by exploring new things to do.
We live in a multi-chain world: We currently support Solana, Ethereum, Polygon and Bitcoin with more networks to come in the new future. We are focused on creating a unified, multi-chain crypto experience for users.

Benefits

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

We strongly encourage candidates of all different backgrounds to apply. We believe that our work is stronger with a variety of perspectives, and we’re eager to further diversify our company. If you have a background that you feel would make an impact at Phantom, please consider applying. We’re committed to building an inclusive, supportive place for you to do the best work of your career.

#LI-DNP

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