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Skyfire · 3 months ago

Senior Backend Engineer

San Francisco, CA

Full-time

Onsite

Senior Level

Skyfire is building the payment backbone for the emerging machine economy, aiming to create a financial system that allows seamless transactions between AI and machines. As a Backend Engineer, you will be responsible for designing and developing core backend components, optimizing performance, and mentoring junior engineers to ensure the successful implementation of high-speed machine-to-machine payments.

Artificial Intelligence (AI)Financial ServicesPayments

Responsibilities

Design and develop core backend components, including smart contract integrations, payment processing logic, and APIs

Implement scalable blockchain solutions for on-chain machine payments with high throughput and low latency

Collaborate closely with product to translate requirements into robust, maintainable technical solutions

Optimize performance for speed, scalability, and cost-efficiency across distributed systems

Mentor junior engineers and foster a culture of technical excellence and innovation

Stay ahead of the curve on blockchain, smart contracts, and AI technologies — integrating them where they create real impact

Qualification

TypeScriptNode.jsBlockchain solutionsPostgreSQLMySQLCI/CDKubernetesDockerCloud infrastructureREST APIsGraphQL APIsOAuth 2.0OpenID ConnectSSORBACNoSQLKey-Value StoresSecurity best practicesWeb3DApps

Required

A self-starter mindset and the drive to tackle big challenges head-on

Strong TypeScript proficiency and Node.js backend development expertise

Experience with PostgreSQL or MySQL and sound database design skills

Solid system design skills to scale from 10s to 1000s of RPS

Familiarity with CI/CD, Kubernetes, and Docker for smooth build and deployment

Experience with cloud infrastructure (AWS, GCP, or Azure) — including networking fundamentals like load balancers and firewalls

Strong skills in testing, debugging, and reliability engineering

Preferred

Experience with REST or GraphQL APIs (design + integration)

Knowledge of OAuth 2.0, OpenID Connect, SSO, and RBAC

Understanding of time complexity and system performance optimization

Familiarity with NoSQL / Key-Value Stores

Awareness of security best practices for authentication, authorization, and encryption

Web3 / blockchain experience — especially smart contracts and dApps

Benefits

Competitive cash + equity package — we believe in rewarding impact.

Healthcare coverage for you and your family.

Fast-growth startup environment — with real ownership from day one.

Collaborative, high-impact culture — where innovation and execution thrive.

Company

Skyfire

Skyfire is the Agentic Commerce Platform built to let AI agents operate in the real economy with verified Know Your Agent (KYA) identity and native payments.

Founded in 2022