Flex

Join Flex’s Money Team as a Senior Backend Software Engineer building the financial infrastructure behind payments, billing, settlements, payouts, and ledger systems. You’ll provide technical leadership while delivering secure, reliable, compliant, and scalable money movement services.

Lead quality engineering strategy and build scalable test automation frameworks as a Staff SDET at Flex. This role provides organization-wide technical leadership across products, platforms, and engineering teams.

Senior Software Engineer on Flex’s Partner Engineering team, building backend systems and payment integrations that power customer and partner experiences. The role focuses on reliable external integrations, data pipelines, and scalable services using Java and AWS.

Senior SDET role owning test automation and quality strategy across major product areas at Flex, a growth-stage fintech company. The role combines automation architecture, complex testing, technical mentorship, and cross-functional quality leadership.

Lead full-stack engineering for Flex’s MarTech team, building the platforms, APIs, data pipelines, and web experiences that drive customer acquisition, retention, and measurable growth. You’ll own high-scale marketing systems across lifecycle messaging, paid acquisition, attribution, and customer-facing web.

Lead the architecture and development of Flex’s backend financial infrastructure, including payments, billing, ledgers, settlements, and money movement systems. This Staff Engineer role combines hands-on Java development with technical leadership across mission-critical, highly reliable platforms.

Senior Backend Software Engineer responsible for building and scaling the services, APIs, integrations, and data pipelines that power Flex’s rent payment platform. The role emphasizes ownership from technical scoping and design through production rollout, with a focus on reliable financial systems.

Flex is hiring a Staff Software Engineer to build and scale payment integrations across partner APIs, SDKs, and embedded web experiences. The role combines hands-on backend engineering with technical roadmap ownership, cross-functional delivery, and mentorship.