Nubank
Digital Financial Platforms
SoftwareEngineer(CryptoSV)US2026
“Software Engineer (Crypto - SV) - US - 2026 at Nubank. Skills: cryptography, blockchain, security, compliance. Own cryptographic systems. protocols”
Industry & Context.
Think adversarially
What They're Looking For.
Must Have
Track record of building and operating cryptographic systems, blockchain infrastructure, secure financial systems in production, Deep understanding of cryptographic primitives, key management, signing protocols, consensus mechanisms, software engineering fundamentals, experience in languages used in crypto infrastructure, Go, Rust, Java, Python, Experience designing systems with an adversarial mindset, threat modeling, security reviews, defensive architecture, Understanding of financial regulation as it applies to crypto, digital assets, experience building compliant systems, Demonstrated ability to make high-stakes engineering decisions, correctness and security are non-negotiable, Experience collaborating with security, compliance, legal teams on system design and review processes
Nice to Have
Experience with specific blockchain protocols, Ethereum, Bitcoin, Solana, integration patterns, Background in DeFi protocols, custody solutions, institutional crypto infrastructure, Experience in fintech, payments, other financial services environments with strict regulatory requirements, Familiarity with HSMs, secure enclaves, hardware-backed key management systems, Proficiency with AI-assisted development tools, thoughtful approach to leveraging AI in security-critical engineering
What You'll Do.
Own cryptographic systems
blockchain infrastructure
on-chain integrations
Design secure crypto infrastructure
Implement secure crypto infrastructure
design systems assuming attacks
conduct threat modeling
build defensive architectures
Navigate intersection of cryptography
ensure systems meet compliance
Lead security reviews
enforce high bar for production readiness
Collaborate with security teams
ensure crypto features are safe
Mentor peers on crypto engineering best practices
contribute to security-first culture
How You'll Work.
Team & Collaboration
Collaborate with security teams; compliance teams; product teams; Collaborate with security; compliance; legal teams
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