Lead Back-End Java Developer
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Job Location:
Saint Louis, MI - USA
Hourly Salary:
$ 70 - 110
Posted on:
21 hours ago
Vacancies:
1 Vacancy
Job Summary
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. Weve 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 were very interested in candidates who can help us. If youre 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:
- Must have a minimum of 5 years experience in Java/Spring Boot (MVC REST) including production systems at scale.
- Must have retail systems experience
- Experience with payment provider integrations (i.e. Braintree/PayPal Venmo Klarna or similar)
- Experience with vendor integrations using FTP file workflows REST APIs and/or message queues
- Experience with OpenShift or Kubernetes including routes/ingress config maps secrets operators
- Experience with Helm Docker and container deployment best practices.
- Understanding of resilient integration patterns: timeouts retries/backoff thread pools connection pooling circuit breaking idempotency.
- Experience with TLS certificate management keystores/trust stores and secure service to service communication.
- Strong observability experience with APM tools metrics logs and distributed tracing.
- SQL proficiency including query tuning and performance optimization.
- Demonstrated leadership in mentoring engineers and guiding technical strategy preferred
- GraphQL experience (schema design resolvers gateway patterns) preferred
- PCIDSS or payment security experience including tokenization and 3D Secure flows preferred
- GitOps Operators container security scanning (Trivy Anchore ACS) experience preferred
- Experience with Feature flag frameworks and modern CI/CD delivery pipelines preferred
- Cloud experience (AWS or Azure) preferred
- Candidate must be able to effectively communicate in English (written & verbal)
The base range for this contract position is $70.00 - $110.00 per hour depending on 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.
LRS is an equal opportunity employer. Applicants for employment will receive consideration without unlawful discrimination based on race color religion creed national origin sex age disability marital status gender identity domestic partner status sexual orientation genetic information citizenshipstatus or protected veteran status.
In some cases LRS Consulting uses generative artificial intelligence (AI) in support of our hiring processes. LRS takes steps to ensure the use of AI does not result in discrimination based on protected class(es). AI may be used in the hiring process solely in support of the assessment of candidate qualifications. All decisions in the hiring process are made by LRS employees. If AI will be used in the hiring process for the position for which you are applying you will be notified and will have the opportunity to opt out. Please contact with any questions.
Required Experience:
IC
Key Skills
- REST
- Eclipse
- JSP
- Junit
- Spring
- Struts
- Jpa
- Hibernate
- Maven
- J2EE
- Jdbc
- Java
About Company
Levi, Ray, and Shoup, Inc. (LRS) is a global provider of technology solutions, providing IT consulting, IT solutions with locations around the world.
