Developer Middleware Integration

Developer Middleware Integration III

Apex Systems

Location: San Antonio, TX (Remote is ok)

Job Summary: The Developer Middleware Integration III is responsible for the design, development, administration, and performance tuning of middleware platforms and enterprise integration solutions. This role supports mission‑critical systems and ensures seamless communication between applications across the organization. The ideal candidate will have extensive experience with middleware technologies and integration tools, particularly in utility or public sector environments.

• Develop, administer, and optimize middleware platforms including IBM ACE, Mule Soft, IBM MQ, Kafka, and others.
• Design and implement APIs using IBM ACE and Mule Soft.
• Perform installation and configuration of middleware tools in high‑availability environments.
• Tune JVMs and manage application servers such as Tomcat, Weblogic, and Web Sphere.
• Develop and maintain integration components using Java, ABAP, Perl, Shell Scripting, XSLT, Data Weave, and SQL.
• Support Service‑Oriented Architecture (SOA) using SOAP, WSDL, and RESTful services (RAML/Swagger).
• Administer databases including Oracle, SQL Server, and Hadoop on UNIX and Windows platforms.
• Collaborate across teams to manage multiple priorities and projects.
• Apply project management principles and contribute to documentation and communication efforts.
• Perform other duties as assigned.

• Bachelor’s degree in Information Systems, Engineering, Computer Science, or related field from an accredited university.
• Significant experience with at least 7 of the following technologies/tools:
• IBM ACE (App Connect Enterprise)
• Mule Soft
• IBM MQ, Active MQ, Kafka
• IBM Web Sphere Application Server, Tomcat, Weblogic
• API development and administration
• Java or ABAP programming
• JVM tuning
• SOAP, WSDL, RESTful services (RAML/Swagger)
• Oracle, SQL Server, Hadoop
• Perl, Shell Scripting, XSLT, Data Weave, SQL
• Strong analytical, problem‑solving, and organizational skills.
• Excellent verbal and written communication abilities.
• Ability to work independently and collaboratively.
• Proficient in Microsoft Office Suite.
• Must have a favorable driving record.

• Master’s degree in Information Systems or related field.
• IBM ACE certification.
• Mule Soft certification.
• Experience in the utility industry or public sector.
• Familiarity with NERC standards.
• Experience with Oracle Cloud, Rabbit MQ, and Web Sphere.

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 Support Linc 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 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 or 804‑523‑8228.