> Markdown version of [/jobs/ext/2212924-senior-software-engineer-backend-money-team](https://www.wearedevelopers.com/jobs/ext/2212924-senior-software-engineer-backend-money-team). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer, Backend Money Team - **Company:** Flexible Finance - **Location:** Los Angeles, CA, United States (Remote available) - **Experience:** Expert - **Salary:** $172,000.0 - $215,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Audit Trail, Build Automation, Distributed Systems, Amazon DynamoDB, Payment Systems, Fault Tolerance, Github, Gradle, Monitoring of Systems, Java Virtual Machine (JVM), Spring Framework, Junit, PostgreSQL, MySQL, NoSQL, Queueing Systems, Secure Coding, Security Software, Service-Oriented Architecture, Software Engineering, Systems Integration, Datadog, Amazon ElastiCache, Backend, Git, Event Driven Architecture, Amazon Relational Database Service, Containerization, Kubernetes, Docker - **Published:** August 24, 2026 - **Apply:** https://arc.dev/remote-jobs/j/redirect/pecfalf7wd ## About the Role * 5+ years of professional software engineering experience, with a focus on Java backend development(Spring core/web/boot, Gradle, JUnit, JVM tuning & performance). * Strong computer science fundamentals and proven experience designing scalable, distributed systems. * Experience integrating with payment processors, settlement, card networks, banking partners. * Strong understanding of transactional systems, financial data consistency, idempotency, auditability, and fault tolerance in distributed environments. * Skilled at working with both technical and non-technical stakeholders, aligning on scope and delivery. * Ability to write high-quality, testable, maintainable, and secure code. * Hands-on experience with AWS (EKS, Aurora RDS, Elasticache, DynamoDB), containerization (Docker/Kubernetes), and relational + NoSQL databases (MySQL, PostgreSQL, DynamoDB). * Proficient with CI/CD pipelines (GitHub Actions preferred), git, and build automation. * Familiar with observability and monitoring tools (e.g., DataDog) for maintaining service availability. * Excellent communicator, comfortable collaborating in globally distributed teams. ## Description Payment systems Security software, +35, We are seeking a Senior Software Engineer to join our Money Team, responsible for building and scaling the financial infrastructure that powers payments, billing, subscriptions, payouts, ledgers, and other money movement systems across the company. As a Senior Engineer, you will provide technical leadership across multiple teams, drive the architecture of mission-critical financial platforms, and help ensure our systems are secure, reliable, compliant, and scalable. You will partner closely with Product, Finance, Risk, Compliance, Data, and Engineering teams to deliver high-impact solutions that directly affect revenue, customer experience, and business operations. What You'll Do * Design, build, and scale backend services and APIs that power Flex's core financial infrastructure, including payments, money movement, billing, settlements, reconciliation, and ledger systems. * Drive the delivery of highly impactful initiatives end-to-end, from requirements gathering and technical design through implementation, rollout, and operational excellence. * Partner closely with Product, Finance, Risk, Compliance, Operations, and cross-functional engineering teams to deliver scalable and compliant payment experiences. * Build robust systems that integrate with external payment processors, banking partners, card networks, and financial service providers. * Design and implement resilient payment, ledger, settlement, and reconciliation workflows that ensure financial accuracy across the ecosystem. * Operate mission-critical financial services in production with stringent uptime, security, compliance, and performance requirements. * Contribute to the evolution of Flex's service-oriented architecture, event-driven systems, APIs, message queues, and scalable financial platforms. ## Related Videos - [Migrating half a million users to a new payment service provider](https://www.wearedevelopers.com/videos/730-migrating-half-a-million-users-to-a-new-payment-service-provider) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Branch your database like your code: How schema changes and pull requests go hand in hand](https://www.wearedevelopers.com/videos/350-branch-your-database-like-your-code-how-schema-changes-and-pull-requests-go-hand-in-hand) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025)