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Senior full-stack engineers at Mercury own product features end-to-end, collaborate with designers and product leaders, and build delightful fintech experiences. Work autonomously within product teams (Banking, Experiences, Expansion, Risk), ship customer-focused features, and leverage Haskell, React, TypeScript, Redux, and AI tools to accelerate development and quality.

Join a product-focused backend team building fintech experiences. Own features end-to-end, collaborate with designers and product, make architectural decisions, and use Haskell/SQL and AI tools to deliver reliable, lovable banking products.

As a CS Strategic Program Manager, you'll drive operational programs in Customer Experience, collaborating across teams and improving customer support efficiency.

Lead end-to-end go-to-market strategy across product-led, sales-led, and partner-led motions, focusing on customer journey, messaging, and growth metrics.

Own and manage a portfolio of payroll vendor partnerships end-to-end: vendor selection, RFPs, contract negotiation, performance management, incident response, and new product launches. Drive cross-functional alignment across product, legal, finance, and engineering, build partner trust, and surface partner-driven insights into Mercury's product roadmap.

Provide legal advice on payments products, rails, partner relationships, and AML/sanctions matters. Embed with product, compliance, risk, engineering, and operations teams from ideation through launch. Support financial crimes initiatives, build scalable legal frameworks and guidance, evaluate new payment capabilities, and apply AI tools to improve legal workflows and efficiency.

Design, build, and ship LLM-powered Command capabilities and agentic workflows end-to-end. Own prompt architecture, model tuning, tool schemas, streaming front-end behavior, and reliability. Build eval harnesses, define testing metrics with product and compliance, and monitor post-launch quality. Mentor engineers and scale production LLM systems for performance, cost, and compliance.

Own and grow Mercury's lending partner portfolio, manage partner selection, due diligence, onboarding, and contract negotiations. Serve as primary partner contact and translate technical, regulatory, and operational partner requirements into actionable internal plans across product, engineering, compliance, legal, operations, and exec teams to support scalable, compliant lending infrastructure.

The Senior Internal Auditor will lead finance and accounting audits, assess risks, plan audits, and ensure compliance with regulations at Mercury.

Own month-, quarter-, and year-end close activities; prepare journal entries, reconciliations, and variance analysis; improve general ledger processes (revenue, AR, accruals, intercompany); strengthen controls and documentation; drive automation and system enhancements; support external audits; partner cross-functionally; and lead process improvements from identification through implementation.