API Spring Developer
Maryland Heights, MO
Category: Development
Industry: Communications
Standard Hours: Open
Reference ID: JN -092026-108603
Date Posted: 09/14/2026
Shortcut: http://careers.eliassen.com/gSKYJX
Description:
Hybrid 4 onsite in Maryland Heights, MO
Our client is hiring API Spring Developers to build backend services and integrations that enable AI agents to interact with enterprise systems for a high-priority Agentic AI initiative. The role centers on hands-on Spring and Java development to deliver secure, reliable REST APIs and backend capabilities that support personalized, context-aware customer interactions.
Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $50.00 to $60.00/hr. w2
Responsibilities:
- Design and develop backend services and REST APIs using Spring and Java.
- Implement integrations with downstream and enterprise systems to provide customer context for AI agents.
- Apply platform standards and patterns for service development and deployment.
- Participate in peer reviews and code reviews to ensure code quality.
- Collaborate within a development team and contribute to modern CI/CD practices.
- Write and maintain unit tests to ensure reliability and maintainability.
- Mentor less experienced developers.
Experience Requirements:
- Strong, hands-on Spring and Spring Boot development experience.
- Strong Java background with object-oriented programming expertise.
- Experience building REST APIs and backend integrations.
- Experience in an enterprise development environment.
- Proficiency with unit testing, Git, and Maven.
- Experience with CI/CD and modern development practices.
- Nice to have: Agentic AI or Generative AI exposure, microservices, MongoDB, enterprise integrations.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above