# Senior Software Engineer, Backend (Money Movement)

**Company:** [Phantom](https://hotfix.jobs/companies/phantom)
**Location:** Remote
**Role:** Backend Engineering
**Experience:** 5+ years
**Skills:** Node.js, Nestjs, Event-Driven Design, REST APIs, Kubernetes, AWS, CI/CD, Observability, Distributed Systems, Solana, Evm, Smart Contracts, Blockchain Protocols, Rate Limiting, Idempotency
**Posted:** 2026-09-04

> Senior backend engineer designing scalable services and APIs that connect Phantom Cash to blockchain networks. The role requires Node.js/NestJS, REST API, event-driven, and distributed-systems expertise, with blockchain or fintech experience preferred.

## Job Description

## Responsibilities
- Design, maintain, and evolve backend services and APIs connecting Phantom Cash to blockchains.
- Apply systems thinking and product pragmatism to balance reliability, quality, and delivery speed.
- Communicate across pods, document rigorously, and raise the engineering bar through execution and mentorship.
- Help make Phantom Cash dependable, seamless, and scalable.

## Requirements
- Bachelor’s degree in Computer Science or a related technical field, or equivalent practical experience.
- Pragmatic, results-oriented engineering mindset focused on user impact.
- Proactive and outcome-oriented approach to anticipating problems and completing features.
- Strong communication and problem-solving skills.
- Experience with Node.js and NestJS at scale.
- Experience with event-driven design, including queues, retries, and idempotency.
- Experience designing REST APIs, including versioning, pagination, error models, authentication, and rate limiting.
- Understanding of client-server architecture, state-management trade-offs, and latency budgets.
- Knowledge of distributed-systems fundamentals, including concurrency, ordering, retries, and data consistency.

## Nice to Have
- Kubernetes and AWS operations experience.
- CI/CD, observability, and on-call ownership experience.
- Deep interest in crypto, wallets, blockchain protocols, and security practices.
- Hands-on experience in crypto or fintech, including exchanges, wallets, payment rails, or ledgers.
- Understanding of smart contracts and blockchain protocols, including interactions between on-chain programs and off-chain services.
- Blockchain integration experience, preferably with Solana; EVM experience is acceptable.
- Experience shipping high-quality products in mature engineering organizations.

## Compensation and Benefits
- Competitive salary and equity.
- Comprehensive medical, dental, and vision insurance, 100% covered.
- Remote-work setup stipend.
- Flexible hours.
- Unlimited vacation.
- 401(k) retirement plan.
- Monthly wellness benefit.
- Weekly meal benefit.
- Global off-sites.

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