Staff Software Engineer, FinPlatform Backend

6+ years of experience in software development or a related field

Experience in technical leadership, guiding engineering teams through complex projects

Experience with Java, Python, Golang, or TypeScript/Node.js.

Strong experience with relational SQL and NoSQL databases, such as MySQL/PostgreSQL/DynamoDB

Experience in designing and developing the fault-tolerant and scalable distributed systems

Experience with AWS cloud services: ESC/EKS, Lambda, API Gateway, VPN, RDS etc

Flex is looking for a Staff Software Engineer to join our core platform team. We want engineers with ideas (because they’ll definitely be heard on our small and tight-knit team) and ambition! Successful devs will feel comfortable in a startup environment and will be happy to work in a remote-first team with a lot of independence. As a Staff Engineer at Flex, you’ll help set technical direction and shape the long-term architecture of our backend services while still being hands-on with coding and delivery. You will collaborate across engineering, product, design, and other stakeholders to ensure scalable, reliable, and impactful systems that power consumer experiences, partner integrations, and our core business platforms. You’ll also play a critical role in mentoring engineers, elevating technical standards, and ensuring the success of projects end-to-end.

Design, implement and maintain our Finance service and internal tooling, including financial reporting, reconciliation/audit process.

Design and develop new APIs and functionalities to support large money movements across our banking partners via different payment rails, such ACH.

Scale out core platform to support business growth while maintaining performance and reliability

Continuously improving our daily operations with automation, tooling, design evolution, observability etc.

Work closely with product, analytics, finance and engineering peers to launch new financial features into our platform