Backend / Python Software Engineer (Senior)

**Backend / Python Software Engineer (Senior)** **Compensation:** $200k – $280k • No equity **Location:** San Francisco **Experience Required:** 5 years **Employment Type:** Full Time **Skills** Python Redis PostgreSQL Go (Golang) AWS Rust FastAPI We are hiring for a client in the social banking and digital wallet industry, driving innovation in consumer finance across emerging markets. The product focuses on building a joint virtual banking and cryptocurrency wallet platform, enabling users around the world to move seamlessly within a unified financial ecosystem with secure transactions, accessibility, and meaningful financial inclusion. Our client is a well-funded, senior-only team based in San Francisco, led by founders with successful exits and supported by large global distribution partners. These roles offer high cash compensation and the chance to make an immediate Day 1 impact on a rapidly scaling product shaping the future of global consumer finance. **Job Description** We're seeking a Senior Backend Engineer to lead our core product development. Our backend serves a REST API that powers our iOS, Android, and Web frontends. You will integrate with cryptocurrency wallet and banking service providers, among other services for auth, ledger, payment rails, etc. This is a financial services application with significant complexity handling real money at scale, internationally. Our backend is a Python (FastAPI) monolith supported by Postgres and Redis on AWS. We are open to Rust and/or Go for any services that need to be broken out for performance. This is a critically important role on our team. You’ll be working directly with the technical founders to set standards and build a highly performant, reliable, and secure app from the ground up. This role may evolve into a backend or general engineering lead as we scale. ### Requirements **Requirements** 5+ years building and shipping web applications in Python, Go, or Rust Experience generally across the backend: working with Postgres, Redis, AWS, etc. **Bonuses** You might be an especially good fit if you have: Experience in financial technology Full-stack engineering skillset and ability to flex across other parts of the stack ### Benefits **What We Offer** $200K-$280K cash compensation - no equity gamble required Day 1 impact on partner products used by millions globally Shape technical vision and architecture as we scale Ground-floor opportunity in the rapidly expanding stablecoin ecosystem Submit qualified candidates from your network and earn up to **$1,500 referral bonus per successful placement** through Sadient. We partner with leading clients across high-impact technology roles and value strong professional referrals. [Submit Referral](https://sadient.com/referral-bonus-policy#ade8f2c0-7846-43de-b093-0a2be6cb7ca6) **Recruiter / Sourcer / Staffing Partner Compensation** Earn USD **$6,000** for every successful candidate placement. Payment Schedule Candidate completes 30 days of employment – USD $2,000 paid on the 35th day. Candidate completes 60 days of employment – USD $2,000 paid on the 65th day. Candidate completes 90 days of employment – USD $2,000 paid on the 95th day. Total Potential Earnings: USD $6,000. **Payment Terms** Payments will be released only after Sadient receives the corresponding milestone payment from the client. The candidate must remain actively employed through each milestone (30, 60, and 90 days). If the candidate leaves before completing any milestone, payment for that milestone and all subsequent milestones will not be payable. No fee is payable if the candidate does not join the client. **Sourcing Partner Responsibilities** Submit only qualified, interested, and available candidates. Obtain a valid Right to Represent (RTR) before submission. Screen candidates for technical fit, availability, and interest. Coordinate interviews and maintain communication with candidates throughout the hiring process. Review the complete Job Description befor…