<p>We’re seeking a Senior Backend Engineer to design and deliver scalable, secure payment and platform integrations using Java and Spring Boot. This role focuses on building resilient backend services, integrating with leading payment providers, and operating containerized services at scale.</p><p><br></p><p>What You’ll Do</p><ul><li>Build and own end‑to‑end payment integrations (Braintree/PayPal, Venmo, Klarna, and similar).</li><li>Develop Spring Boot REST and GraphQL services supporting modern React applications.</li><li>Implement resilient integration patterns such as retries, circuit breakers, and idempotency.</li><li>Deliver vendor integrations via FTP workflows, APIs, and message queues.</li><li>Operate and optimize services on OpenShift/Kubernetes using Docker and Helm.</li><li>Ensure platform reliability through monitoring, logging, tracing, and performance tuning.</li><li>Manage TLS certificates and secure service‑to‑service communication.</li><li>Collaborate with product, DevOps, security, and infrastructure teams.</li></ul><p><br></p>

<ul><li>5+ years of experience with Java and Spring Boot in production environments.</li><li>Hands‑on experience integrating with payment providers.</li><li>Strong Kubernetes/OpenShift, Docker, and Helm experience.</li><li>Expertise in SQL performance tuning and system observability.</li><li>Ability to mentor engineers and contribute to technical direction.</li></ul>

<h3 class="rh-display-3--rich-text">Technology Doesn't Change the World, People Do.^®</h3> <p>Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.</p> <p>Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. <a href="https://www.roberthalf.com/us/en/mobile-app" target="_blank">Download the Robert Half app</a> and get 1-tap apply, notifications of AI-matched jobs, and much more.</p> <p>All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit <a href="https://roberthalf.gobenefits.net/" target="_blank">roberthalf.gobenefits.net</a> for more information.</p> <p>© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s <a href="https://www.roberthalf.com/us/en/terms">Terms of Use</a> and <a href="https://www.roberthalf.com/us/en/privacy">Privacy Notice</a>.</p>