Full Stack Engineer (Java Development / API testing)
Merrimack, NC
Category: Development
Industry: Financial Services
Reference ID: JN -042026-106232
Date Posted: 04/01/2026
Shortcut: http://careers.eliassen.com/bi26oe
Description:
Hybrid 50% on site in either Merrimack, NH or Westlake, TX
We are seeking senior full stack engineer to build, test, and engineer REST APIs for a data platform. The role requires strong Java and Spring Boot skills, API design expertise, and experience deploying and supporting applications on AWS. You will contribute to strategic roadmaps, collaborate in an agile environment, and support high-scale, production-grade systems for an organization focused on modernizing financial platforms that help customers achieve long‑term financial success. The team values innovation, diversity of thought, and engineering excellence, and works in a collaborative agile environment where every voice matters.
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: $65.00 to $70.00/hr. w2
Responsibilities:
- Design, develop, and maintain REST APIs using Java and Spring Boot
- Build and support applications deployed in AWS
- Follow Domain‑Driven Design principles and API lifecycle best practices
- Create and maintain Swagger / OpenAPI specifications
- Write unit and integration tests using JUnit, Cucumber, and REST Assured
- Support CI/CD pipelines using Jenkins, Maven, and Docker
- Monitor and support production applications using log aggregation tools (e.g., Splunk)
- Partner closely with business and technology stakeholders to prioritize work based on impact and strategic value
- Contribute to platform scalability, performance, availability, and monitoring
- Mentor and collaborate with other engineers in an agile environment
Experience Requirements:
Core skills needed:
- Java & Spring Boot API Development (net‑new development required)
- AWS (cloud‑based application deployment and support)
- API testing using either Postman or Insomnia
- Strong verbal and written communication skills with both engineers and business stakeholders
Role requires:
- 8+ years of hands-on software development experience.
- Java and Spring Boot API development, including greenfield / new services.
- Domain-driven API design with Swagger or OpenAPI specifications and API lifecycle management.
- Proficiency with core Java, Spring MVC/Core/Boot, and SOAP/REST web services.
- Experience in UNIX and Windows environments with AWS cloud services.
- Test-driven development with unit and integration testing using JUnit, Cucumber, and REST Assured.
- Familiarity with Postman or Insomnia for API testing.
- Familiarity with GitHub Copilot or similar developer assist tools (preferred).
Education Requirements:
- Bachelor's or Master's degree in Computer Science or Engineering, or equivalent and practical / relevant experience alongside 8+ years of software/web development in a Java centric environment.
- AWS certification (preferred).
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 contactInfoSec@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