Developer III - API Web Services

SYSTEMTEC is seeking a Developer III - API Web Services for a hybrid opportunity for candidates in Columbia, SC. Candidate will support the design, development, testing, and maintenance of complex enterprise applications within a multi-platform environment, with a strong emphasis on API-driven integration and systems interoperability. The role involves working across distributed, mainframe, and cloud-enabled systems to deliver scalable solutions, resolve production issues, and ensure seamless system integration across business-critical platforms.

Required Qualifications of the Developer III - API Web Services:

• Applicants must be authorized to work for any employer in the U.S. We are unable to provide sponsorship or work with Third-Party agencies.
• Bachelor’s degree in Computer Science, Information Technology, or related field; OR 4+ years of relevant professional experience; OR Associate’s degree plus 2+ years of relevant experience
• 4+ years of experience in application development, systems testing, or related technical roles
• Strong understanding of application development lifecycle, QA practices, and integration methodologies across mainframe, midrange, and/or distributed environments
• Solid knowledge of enterprise integration principles and API-based architectures
• Experience analyzing system dependencies and assessing impact of application changes across environments
• Strong problem-solving, analytical, and troubleshooting skills
• Excellent written and verbal communication skills with ability to interact across technical and business teams
• Ability to work in fast-paced environments, manage priorities, and perform under pressure
• Strong attention to detail with ability to document, design, and support technical solutions effectively
• Experience collaborating in team environments while also working independently when required

Preferred Skills/Experience of the Developer III - API Web Services:

• Experience developing APIs and web services using Java or JavaScript
• Experience with REST and SOAP-based service architectures
• Knowledge of authentication protocols such as OAuth and mTLS
• Experience with GraphQL is a plus
• Hands-on experience with API management platforms such as IBM DataPower, IBM API Connect, Kong, or AWS API Gateway
• Experience with Red Hat OpenShift and containerized environments
• Experience with IBM WebSphere Application Server
• Experience with Node.js development
• Familiarity with CI/CD pipelines and DevOps tools (GitHub, Jenkins, GitHub Actions, Artifactory)
• Experience with integration, messaging, and testing tools such as IBM MQ, IBM WTX/ITX, and ReadyAPI
• Familiarity with OpenAPI/Swagger standards and API documentation practices
• Experience with monitoring and analytics tools such as Splunk and databases such as MongoDB
• Understanding of mainframe integration concepts including XML and copybook transformations

Responsibilities of the Developer III - API Web Services:

• Perform end-to-end application systems analysis, design, development, testing, and maintenance activities
• Translate business requirements into detailed technical specifications and implement scalable application solutions
• Design, develop, debug, test, and document complex applications and system integrations
• Support API development, integration services, and service orchestration across enterprise platforms
• Analyze system performance, troubleshoot production issues, and implement enhancements or fixes
• Collaborate with stakeholders to ensure delivery of solutions aligned with business and technical requirements

Work Location: Hybrid role based in Columbia, South Carolina, with onsite work required Tuesday through Thursday and as needed.

Compensation / Benefits:
Full-Time Employment with SYSTEMTEC means competitive compensation, access to health, dental, disability, and life coverage, and 401(k) with match.

***Please note: SYSTEMTEC is not set up to employ workers in the states of California, New York, and New Jersey.***