Demo

Software Developer - Full Stack

Apex Systems
Hopkins, MN Full Time
POSTED ON 3/21/2026
AVAILABLE BEFORE 4/18/2026
Job#: 3025537

Job Description:

Full Stack Java / React Engineer

Location: Onsite – Hopkins, MN

We are seeking a highly experienced Full Stack Engineer to support a critical modernization and conversion. This role will focus on building and enhancing scalable, cloud-ready applications using Java, Spring Boot, and React. The ideal candidate is hands-on, technically strong across both back-end and front-end development, and comfortable working in a collaborative, fast-paced environment.

This is an onsite position based in Hopkins, Minnesota, supporting a high-visibility enterprise modernization effort.

Key Responsibilities

The engineer will be responsible for designing, developing, and maintaining modern applications and services. Daily responsibilities include:

  • Designing and building scalable Java and Spring Boot microservices that expose secure and performant RESTful APIs.
  • Leveraging Spring Cloud components (Config Server, Eureka, Gateway, Circuit Breakers) to support service discovery, configuration management, and resilience.
  • Developing responsive and maintainable React applications, with strong use of hooks, state management, and component lifecycle best practices.
  • Writing clean, type-safe front-end code using TypeScript with React.
  • Integrating front-end applications with Spring Boot back-end services through well-defined APIs.
  • Working with relational databases such as MySQL or PostgreSQL, using JPA/Hibernate for data persistence and ORM.
  • Supporting CI/CD pipelines using tools such as Jenkins, GitHub Actions, or GitLab, ensuring reliable builds and deployments.
  • Containerizing and deploying services using Docker and Kubernetes in a microservices-based environment.
  • Implementing authentication and authorization using Spring Security and JWT.
  • Writing and maintaining automated tests, including JUnit and Mockito for back-end services and Jest or React Testing Library for front-end applications.

Required Skills & Experience

  • 8–10 years of professional software development experience
  • Strong expertise in Java and Spring Boot
  • Hands-on experience with React and TypeScript
  • Solid understanding of microservices architecture and RESTful API design
  • Experience with Spring Cloud, CI/CD pipelines, Docker, and Kubernetes
  • Knowledge of relational databases and ORM frameworks
  • Strong testing mindset across both front-end and back-end

Interview Process

  • Number of rounds: 1
  • Format: Video interview
  • Interview style: In-depth technical questionnaire with a strong focus on hands-on experience and technical fundamentals

EEO Employer

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. 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 [email protected] or 844-463-6178.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join 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 ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview: 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. 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, 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. 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 Apex team member can provide.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join 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 ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview: 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. 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, 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. 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 Apex team member can provide.

Apex Systems is part of the Commercial Segment of ASGN Incorporated.

NYSE: ASGN

4400 Cox Road

Suite 200

Glen Allen, Virginia 23060

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. 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 Benefits Department at [email protected] or 804-523-8228. (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Apex Systems.

Salary : $72 - $73

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