Senior Software Engineer, Backend (Money Movement)

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 UsWe 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.