Senior Software Engineer, Stablecoin Payments
About The Position
Flex is building stablecoin products for business owners. This role is among the first engineering hires on a small, fast-moving team and focuses on building services that move customer money on-chain and connect those services to Flex’s existing banking systems. The engineer will own work end to end, from design through launch and production support, with direct access to engineering leadership and product. Crypto experience is helpful but not required; strong fintech engineering experience in payments, onboarding, compliance, and reliability is relevant. The position works closely with product, design, compliance, and business development, and helps shape the team’s technical direction and roadmap. The role also includes onboarding and mentoring new teammates.
Requirements
- At least 5 years of backend software engineering experience.
- Experience building and operating production services in fintech, payments, or banking.
- Experience with compliance-driven systems such as KYB, KYC, AML, or audit requirements, and comfort working with compliance stakeholders.
- Strong system design skills, especially for money movement, including accuracy, reliability, and safe failure handling.
- Proficiency in a modern backend language.
- Ability to own problems end to end in a small, fast-moving team.
- Clear communication with technical and non-technical partners.
Nice To Haves
- Hands-on crypto experience, such as stablecoins, wallets, custody, or on-chain transactions.
- Experience with on- and off-ramps, virtual accounts, or stablecoin orchestration.
- Smart contract development or auditing experience.
- Prior experience at a startup or high-growth company.
Responsibilities
- Design, build, and run backend services for stablecoin payments, including deposits, withdrawals, and on- and off-ramps.
- Integrate with partners for wallets, virtual accounts, and stablecoin orchestration.
- Build business onboarding (KYB) and compliance flows that meet banking audit requirements.
- Connect stablecoin products to Flex’s existing banking, ledger, and payments systems.
- Own work from design through launch and production support.
- Work closely with product, design, compliance, and business development.
- Help set the technical direction of the team’s roadmap.
- Onboard and mentor new teammates.
Benefits
- Medical insurance.
- Dental insurance.
- Vision insurance.
- Paid time off.
- 401(k) plan.
- Equity compensation.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
