Lead Back-End Java Developer (27224)

Job Description

LRS Consulting Services is seeking a Lead Back-End Java Developer for a role with a client of ours based in St. Louis.

LRS Consulting Services has been delivering the highest quality consultants to our clients since 1979. We've built a solid reputation for dealing with our clients and our consultants with honesty, integrity, and respect. We work hard every day to maintain that reputation, and we're very interested in candidates who can help us. If you're that candidate, this opportunity is made for you!

Our client is seeking a Lead Back-End Java Developer to own their retail solution payment ecosystem, backend services, and the reliability patterns that help keep their Retail business running. This is a critical technical role responsible for Spring Boot service architecture, payment provider integrations, and the developer experience that powers their product teams.

Day to Day Responsibilities :

• Own end to end integrations with Braintree / PayPal, Venmo, Klarna, and additional payment services.
• Implement and support authorization, capture, refund flows, webhook processing, and reconciliation.
• Design, development, and evolution of Spring Boot MVC / REST services and GraphQL APIs supporting our React applications.
• Apply resilient integration patterns (timeouts, retries, idempotency keys, circuit breakers, backoff strategies).
• Build and support integrations both internally and with external vendors
• Ensure high reliability, repeatability, and automated validation of inbound / outbound vendor data flows.
• Define and standardize APM instrumentation, structured logging, distributed tracing, and alerting.
• Investigate performance bottlenecks and tune JVM, SQL interactions, and connection pools.
• Operate and optimize services running on the OpenShift Container Platform.
• Own and maintain Helm charts, Kubernetes manifests, and container deployment standards.
• Build secure, lightweight Docker images and enhance CI / CD automation.
• Manage TLS certificates for internal and external service communication.
• Oversee certificate rotation, renewal, and debugging of secure communication failures.
• Partner with product, DevOps, security, and infrastructure teams to deliver scalable, reliable solutions.

Requirements :

The base range for this contract position is $70.00 - $110.00 per hour, depending on experience. Our pay ranges are determined by role, level, and location. The range displayed on each job posting reflects the minimum and maximum target for new hires of this position across all US locations. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.