Design, develop, test, and scale backend services and APIs that power Flex’s products, partner experiences, and internal platforms.
Implement the service APIs used by our mobile and web apps to simplify complex rent payment processing.
Build robust, fault-tolerant systems that integrate with multiple external dependencies and ensure high reliability.
Work closely with cross-functional teams—including Engineering, Product, Design, Infrastructure, Sales, Partner, and Customer Success—to deliver features and integrations that wow both customers and partners.
Translate feature requirements into well-structured technical specifications and scalable solutions.
Lead scoping, design, and implementation for the APIs you build and drive production rollouts with minimal oversight.
Contribute to service-oriented architecture, scalable system design, and internal best practices for distributed services environments.
Collaborate with peers to evolve Flex’s technical architecture as the company and product offerings grow.
Ensure services are observable and highly available through effective use of monitoring tools and practices.
Participate in code reviews, CI/CD improvements, and efforts to increase code quality and stability.

Requirements

Strong computer science fundamentals and passion for building scalable backend systems.
2–3+ years of professional software engineering experience with a focus on backend services.
Proficient in Java with hands-on experience using Flex’s core stack: Spring (core/web/boot), Gradle, JUnit.
Experience building and maintaining distributed services and APIs at scale in production environments.
Familiar with REST API design, mobile API best practices, and service-oriented architectures.
Experience building fault-tolerant systems with multiple external dependencies.
Skilled in observability and monitoring tools (e.g., DataDog) to ensure high availability.
Ability to write high-quality code that is testable, maintainable, scalable, and secure.
Demonstrated ability to translate business requirements into technical specifications and deliver high-impact solutions.
Excellent communicator who thrives in a collaborative, globally-distributed team environment.

Benefits

Competitive medical, dental, and vision available from Day 1
Company equity
401(k) plan with company match (our company match kicks off at the beginning of 2026)
Unlimited paid time off + 13 company paid holidays
Parental leave
Flex Cares Program
Free Flex subscription

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

JavaSpringGradleJUnitREST API designservice-oriented architecturedistributed servicesfault-tolerant systemsobservabilitymonitoring tools

Soft Skills

communicationcollaborationproblem-solvingtechnical specification translationcode qualityscopingdesignimplementationleadershipadaptability