Apex Systems
Job#: 2080113
Job Description:
Full Stack Java Developer
Location: Denver, CO (Onsite Preferred)
Employment Type: Full-Time
We are looking for a highly skilled Full Stack Java Developer to join our team and take ownership of designing, developing, testing, and maintaining high-performance applications. This role requires a strong foundation in Java, Spring Boot, and modern front-end technologies, along with a passion for building scalable, secure, and reliable systems.
Key Responsibilities
Design, develop, test, and maintain full-stack applications with a focus on performance and scalability. Write production-ready, testable code with a strong emphasis on quality and maintainability. Create optimal technical designs that align with architectural best practices. Analyze system failures, propose design improvements, and drive operational excellence. Prioritize customer experience in all design and development decisions. Participate in and conduct code reviews to ensure adherence to engineering standards. Ensure compliance with security and regulatory requirements throughout the development lifecycle. Champion software reliability engineering practices and continuous improvement. Embrace and integrate emerging technologies to support innovation and transformation. Collaborate across teams to ensure timely delivery of high-quality software. Proactively identify and communicate blockers and delays.
Required Skills & Experience
Java (v17 or higher): Expert-level proficiency. Spring Boot & Java Frameworks: Strong experience in backend development and cloud API design. Front-End Development: Experience with React and Node.js. Microservices & API Development: Deep understanding of RESTful services, JUnit, Mockito. DevOps & CI/CD: Hands-on experience with Kubernetes, containerization, and pipeline automation. Cloud & Infrastructure: Experience with hybrid cloud environments and container orchestration. Databases: Proficient in both relational and NoSQL databases. Architecture & Design: Ability to interpret and work with architecture diagrams and tools. Soft Skills: Excellent communication, collaboration, problem-solving, and analytical skills.
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.
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 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 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 Employee Services Department at [email protected] (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.
Seniority level
Seniority level
Mid-Senior level Employment type
Employment type
Full-time Job function
Job function
Engineering and Information Technology Industries
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Job Description:
Full Stack Java Developer
Location: Denver, CO (Onsite Preferred)
Employment Type: Full-Time
We are looking for a highly skilled Full Stack Java Developer to join our team and take ownership of designing, developing, testing, and maintaining high-performance applications. This role requires a strong foundation in Java, Spring Boot, and modern front-end technologies, along with a passion for building scalable, secure, and reliable systems.
Key Responsibilities
Design, develop, test, and maintain full-stack applications with a focus on performance and scalability. Write production-ready, testable code with a strong emphasis on quality and maintainability. Create optimal technical designs that align with architectural best practices. Analyze system failures, propose design improvements, and drive operational excellence. Prioritize customer experience in all design and development decisions. Participate in and conduct code reviews to ensure adherence to engineering standards. Ensure compliance with security and regulatory requirements throughout the development lifecycle. Champion software reliability engineering practices and continuous improvement. Embrace and integrate emerging technologies to support innovation and transformation. Collaborate across teams to ensure timely delivery of high-quality software. Proactively identify and communicate blockers and delays.
Required Skills & Experience
Java (v17 or higher): Expert-level proficiency. Spring Boot & Java Frameworks: Strong experience in backend development and cloud API design. Front-End Development: Experience with React and Node.js. Microservices & API Development: Deep understanding of RESTful services, JUnit, Mockito. DevOps & CI/CD: Hands-on experience with Kubernetes, containerization, and pipeline automation. Cloud & Infrastructure: Experience with hybrid cloud environments and container orchestration. Databases: Proficient in both relational and NoSQL databases. Architecture & Design: Ability to interpret and work with architecture diagrams and tools. Soft Skills: Excellent communication, collaboration, problem-solving, and analytical skills.
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.
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 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 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 Employee Services Department at [email protected] (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.
Seniority level
Seniority level
Mid-Senior level Employment type
Employment type
Full-time Job function
Job function
Engineering and Information Technology Industries
IT Services and IT Consulting Referrals increase your chances of interviewing at Apex Systems by 2x Get notified about new Java Software Engineer jobs in
Englewood, CO . Denver, CO $70,000.00-$145,000.00 2 weeks ago Denver, CO $120,000.00-$140,000.00 2 weeks ago Broomfield, CO $78,500.00-$98,500.00 6 hours ago Denver, CO $150,000.00-$180,000.00 3 weeks ago Denver, CO $80,000.00-$105,000.00 8 months ago Denver, CO $135,000.00-$230,000.00 10 months ago Software Engineer/Full Stack - Louisville, CO
Louisville, CO $100,000.00-$236,579.00 1 month ago Denver, CO $120,000.00-$200,000.00 4 days ago Denver, CO $145,000.00-$155,000.00 1 month ago Denver, CO $140,000.00-$220,000.00 1 day ago Software Engineer, FBM Mk7, Early to Mid Career
Denver, CO $150,000.00-$180,000.00 2 weeks ago Software Engineer, FBM D5LE2, Early to Mid Career
Denver, CO $135,000.00-$150,000.00 1 month ago Denver, CO $95,000.00-$105,000.00 3 days ago Denver, CO $95,000.00-$120,000.00 3 weeks ago Were unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr