Senior Software Engineer, Backend (Money Movement)

About Phantom

Phantom combines industry-leading security with thoughtfully designed tools to make powerful financial tools feel approachable and easy to use. The company has achieved 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 recognizable consumer technology platforms.

The Role

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.

Required Qualifications

• Bachelor's 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 Join Us

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. Our dedication to a secure and seamless user experience has made us the leading wallet on Solana, with our multi-chain approach enhancing our platform's versatility to meet the needs of a diverse and growing user base.