Sr. API Engineer

Apex Systems; Hoover (AL); Remote; USD 120,000 - 170,000; Full time

Benefits offered by this job

Medical coverage

Dental coverage

Vision coverage

401K with company match

Employee stock purchase plan (ESPP)

HSA plan

Career development resources

Job summary

Everforth Apex is seeking a Senior API Engineer to secure REST APIs and modernize the Java stack across multiple repositories. You will implement authentication controls, document changes, and validate production readiness while collaborating with security and platform teams.

The role emphasizes hands-on modernization, API security, and thorough testing, with opportunities to contribute to deployment and hypercare activities in a remote US setting.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, Information Systems, or equivalent practical experience is preferred.
• 5+ years of enterprise API/backend engineering experience is preferred.

Responsibilities

• Secure REST APIs and configure OAuth 2.0, JWT roles, scopes, and claims.
• Upgrade applications through modernization path: Gradle 8.x, Spring Boot 3.x, Java 21, Gradle 9.x.
• Resolve compatibility issues from framework/library upgrades.
• Update OpenAPI 3 specifications and deprecate legacy endpoints.
• Implement application logging and SIEM integration.
• Develop and maintain automated unit, integration, and API security tests.
• Resolve defects during testing and deployment validation.
• Support deployment and hypercare activities.

Skills

Java 17/21

Spring Boot

Gradle

OAuth 2.0

JWT

OpenAPI/Swagger

CI/CD

Git

Security testing

Education

Bachelor's degree in Computer Science or equivalent

Tools

Okta

Swagger tooling

Job description

Job#: 3052955

Job Description:

Sr. API Engineer

Location: remote, United States (Remote)

Role Overview

We are seeking a Senior API Engineer to support an enterprise API security remediation and platform modernization initiative. This role involves securing REST APIs, modernizing the Java stack, implementing authentication and authorization controls, and delivering production-ready changes with supporting technical validation and documentation for four separate Java application repositories. The ideal candidate will have demonstrated hands-on modernization and security expertise.

Key Responsibilities

• Assess existing repositories and Jira stories; develop and secure REST APIs; configure OAuth 2.0, JWT roles, scopes, and claims.
• Upgrade applications sequentially through the required modernization path: Gradle 8.x, Spring Boot 3.5.x, Java 21, and then Gradle 9.x.
• Resolve compatibility issues related to framework, library, and dependency upgrades.
• Update OpenAPI 3 specifications and deprecate legacy API endpoints.
• Implement application logging and SIEM integration.
• Develop and maintain automated unit, integration, and API security tests.
• Resolve defects discovered during testing and deployment validation.
• Participate in standups, document implementation evidence, and support deployment and hypercare activities.

Required Qualifications

Education: A Bachelor’s degree in Computer Science, Engineering, Information Systems, or equivalent practical experience is preferred.

Experience: 5+ years of enterprise API/backend engineering experience is preferred.

Technical Skills

• Advanced Java 17/21, Spring Boot 3.x, and Gradle experience, including major-version upgrades and dependency remediation.
• Advanced Spring Security with hands-on OAuth 2.0, JWT scopes/roles/claims, and secure REST API development.
• OpenAPI 3/Swagger expertise plus strong automated unit, integration, and API security testing experience.
• Experience working with Git-based source control and CI/CD pipelines.
• Ability to troubleshoot complex application, dependency, and integration issues.

Preferred Qualifications

• Experience with Okta or comparable enterprise Identity Provider, including API configuration across QA and production environments.
• Experience with SIEM integration, structured security-event logging, and enterprise logging SDKs.
• Experience with Harness, Anypoint/API gateway, Flyway, JaCoCo, DNS/load-balancer coordination, and production deployments.

Work Environment

The delivery team includes an Engagement Manager, API Architect, and API Engineer(s). This role requires strong ownership, clear communication, collaboration across security and platform teams, disciplined risk escalation, documentation, adaptability, and attention to production quality.

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 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 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 [email protected] 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.