Software Engineer - Java - NC

Apex Systems; Charlotte, Northern (NC, KY); Hybrid; USD 73,000 - 79,000; Part time

Job summary

Apex Systems in Charlotte, NC is seeking a Software Engineer 3 with strong Core Java backend development. The role focuses on building Spring Boot microservices, Kafka integrations, and MongoDB data services while supporting modernization from JSF to React in a large enterprise legacy application.

Hybrid work arrangement with 3 onsite days, candidates should have 5–7 years of Core Java experience, plus React and cloud/Kubernetes exposure.

Qualifications

• 5–7 years of strong Core Java backend development experience.
• Spring Boot and microservices development.
• Kafka experience, including filters and event-processing concepts.
• React experience, preferably supporting Java-to-React modernization.
• Experience with MongoDB and strong technical communication skills.

Responsibilities

• Backend Development: Develop and maintain enterprise Java backend services; build and enhance Spring Boot microservices; troubleshoot complex issues; read and enhance legacy code.
• React Modernization: Support migration from Java Server Faces to React; collaborate with frontend engineers on APIs and integration.
• Kafka & Event Processing: Build and support Kafka-based integrations; configure message processing; investigate event-flow issues.
• Database & Cloud: Develop MongoDB-backed services; work with OpenShift/Kubernetes; support cloud deployment and troubleshooting.

Skills

Core Java

Spring Boot

Microservices

Kafka

React

MongoDB

Tools

Kubernetes

OpenShift

Job description

# Software Engineer - Java - NCApply**Job#: 3046116****Job Description:**Client: Financial Services**Line of Business:** TBA**Job Title:** Software Engineer 3 – Core Java**Location:** Charlotte, NC (CIC)**Work Arrangement:** Hybrid, 3 Days Onsite Required**Contract Length:** 6 Months, with Possible Extension or Conversion**Bill Rate:** $53 - $57Top Requirements1. 5–7 years of strong Core Java backend development experience2. Spring Boot and microservices development3. Kafka experience, including filters and event-processing concepts4. React experience, preferably supporting Java-to-React modernization5. Experience with MongoDB and strong technical communication skillsPlusses* Financial services experience* Collections application experience* Cloud experience* Kubernetes or OpenShift experience* Ability to read and enhance legacy Java Server Faces code* Experience using AI-assisted development toolsJob SummaryIn this contingent resource assignment, you will participate in moderately complex Software Engineering initiatives supporting a large, complex legacy Collections application. The selected engineer will primarily work on the Core Java backend while supporting a modernization effort migrating application functionality from Java Server Faces to React.The role requires strong Java, Spring Boot, microservices, Kafka, and MongoDB experience. The engineer will join a 10-person Kanban team responsible for ongoing application enhancements, quarterly releases, operational support, and continued modernization. The candidate should be comfortable working within a large enterprise application and contributing to both legacy-code analysis and new cloud-oriented services.Day-to-Day ResponsibilitiesBackend Development* Develop and maintain enterprise Java backend services* Build and enhance Spring Boot microservices* Design and implement reusable backend components* Troubleshoot complex application issues* Read, analyze, and enhance existing legacy Java code* Support application performance, reliability, and maintainabilityReact Modernization* Support the migration from Java Server Faces to React* Collaborate with frontend engineers on backend APIs and application integration* Update services and interfaces required by modernized user experiences* Help validate migrated functionality against existing business behaviorKafka & Event Processing* Build and support Kafka-based integrations* Configure and troubleshoot message processing* Apply filtering and routing logic based on application requirements* Investigate event-flow issues and support reliable data exchangeDatabase Development* Develop and troubleshoot MongoDB-backed application services* Support data access, validation, and performance optimization* Collaborate on schema and query design for microservices* Diagnose issues involving application and database interactionsCloud & Platform Support* Work with services deployed in OpenShift cloud environments* Support cloud-based application delivery and troubleshooting* Apply Kubernetes concepts where applicable* Collaborate with platform teams on deployment and runtime issuesDelivery & Collaboration* Work within a Kanban delivery model* Participate in planning, refinement, demonstrations, and team coordination* Support quarterly release activities when needed* Collaborate with Engineers, Product Owners, QA teams, and business partners* Communicate technical issues and solutions clearlyEEO EmployerApex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [e-mail] or 844-463-6178. *Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.**Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy**Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide.**Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.**If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [e-mail] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.**UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.***Employee Type:** Contract**Location:** Charlotte, NC, US**Job Type:****Date Posted:** August 12, 2026**Pay Range:** $53 - $57 per hour