Jobs / United States / Social Finance INC
Staff Backend Engineer, Custody Core (Crypto Security)
Social Finance INC · 🇺🇸 CA - San Francisco; WA - Seattle; NY - New York City; TX - Frisco; UT - Cottonwood Heights; MT - Helena; FL - Jacksonville
Sponsorship verdict
Sponsorship possible
One solid signal, not two — worth applying, and worth asking about sponsorship early.
- Employer is on a government sponsor recordThe US Department of Labor certified 186 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 49 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
- The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
- No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.
- What Social Finance INC paid sponsored hires in similar roles3 certified filings for “Sr Product Security Engineer” (Information Technology Project Managers) in NY: $207k–$212k, median $210k. Most were filed at wage level III (100%) — 3 lottery entries, ≈46% projected selection odds for cap-subject employers. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).
- Confirmed live todayWhen a source last listed this job as open.
US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).
A verdict summarises public evidence; it is not legal advice and never a guarantee — the employer and the immigration authority decide. Sign in to factor in where you can already work.
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Sponsor Radar — Social Finance INC
The US Department of Labor certified 186 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 49 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
Past sponsorship or register membership never guarantees sponsorship for this vacancy or for you. Full Sponsor Radar for Social Finance INC →
About the role
Employee Applicant Privacy Notice Who we are: Shape a brighter financial future with us. Together with our members, we’re changing the way people think about and interact with personal finance. We’re a next-generation financial services company and national bank using innovative, mobile-first technology to help our millions of members reach their goals. The industry is going through an unprecedented transformation, and we’re at the forefront. We’re proud to come to work every day knowing that what we do has a direct impact on people’s lives, with our core values guiding us every step of the way. Join us to invest in yourself, your career, and the financial world. The role We are looking for a Staff Backend Engineer to help build the next generation of SoFi's digital asset custody platform. This engineer will design and develop the core services that power secure custody, blockchain transaction processing, wallet infrastructure, and institutional digital asset products. This role sits at the center of crypto infrastructure, working closely with Security, Platform Engineering, Product, Treasury, and Operations to build highly available systems responsible for protecting customer assets. The ideal candidate enjoys solving distributed systems problems, designing resilient APIs, and building financial infrastructure where security and reliability are first-class requirements. What you’ll do: • Design and build backend services supporting SoFi's digital asset custody platform • Develop secure transaction orchestration services for deposits, withdrawals, transfers, staking, and treasury operations • Build integrations with custody providers, blockchain infrastructure, and institutional settlement networks • Design APIs supporting retail and institutional crypto products • Develop services supporting wallet lifecycle management and blockchain interactions • Improve platform resiliency through redundancy, disaster recovery, observability, and automated recovery mechanisms • Optimize transaction throughput while maintaining strict security controls • Build scalable event-driven architectures supporting blockchain state changes and transaction processing • Partner closely with Security Engineering to implement cryptographic controls and authorization workflows • Collaborate with Product and Infrastructure teams to deliver new digital asset capabilities What you’ll need: • 7+ years of backend software engineering experience • Strong experience with applied cryptography, key management architectures (HSMs, KMS), or Multi-Party Computation (MPC) protocols. • Proven experience building high-stakes financial transaction systems (e.g., trading engines, payment rails, digital asset wallets) with a zero-trust, security-first mindset. • Strong understanding of blockchain fundamentals, transaction signing lifecycles, and wallet architecture. • Strong experience with distributed systems and cloud-native architectures • Experience building highly available production services • Strong understanding of REST APIs, asynchronous messaging, and event-driven systems • Experience with AWS or comparable cloud platforms • Experience with PostgreSQL, Redis, Kafka, or similar technologies • Strong understanding of CI/CD and modern software development practices • Excellent debugging and production incident response skills Nice to have: • Experience working with digital assets or blockchain infrastructure • Experience integrating with custody platforms such as Fireblocks, BitGo, or Anchorage • Experience building financial services infrastructure • Familiarity with blockchain transaction lifecycle and wallet architecture • Experience designing secure approval workflows • Understanding of distributed consensus and cryptographic