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Senior Backend Engineer (Identity Systems) - Affirm
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AI Summary
Designs, develops, and scales core backend services for a blockchain wallet infrastructure platform. Manages APIs, microservices, databases, and developer tooling while ensuring system security, performance, and scalability. Requires 8+ years of fintech/blockchain backend engineering experience with expertise in TypeScript, low-level languages, and cloud infrastructure.
Key Highlights
8+ years of fintech/blockchain backend engineering experience required
Full ownership of critical backend projects (APIs, microservices, databases)
Collaboration with product, security, and leadership teams
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Key Responsibilities
Design, build, and maintain secure, scalable backend services and RESTful APIs
Architect databases and microservices optimized for performance and reliability
Manage the full software development lifecycle (SDLC) from requirements to production deployment
Troubleshoot performance bottlenecks and ensure system resilience under financial workloads
Collaborate with product and security teams on technical roadmaps and strategic direction
Technical Skills Required
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Benefits & Perks
$160K–$240K annual salary
100–200 stock options (vested over 4 years)
Comprehensive healthcare coverage
401K participation
Remote-first with optional office access
MacBook Pro and home-office hardware provided
Professional travel expenses covered
Job Description
The Senior Software Engineer will design, develop, and scale core backend services for a high-performance platform. This role involves full ownership of critical projects—ranging from APIs and microservices to databases and developer tooling—ensuring all systems remain fast, reliable, and secure.
Key Responsibilities:
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