Senior IBM Integration Developer (ACE / APIC / ESQL)

Location: Canberra, Brisbane, Melbourne or Adelaide (Sydney may be considered)
Contract: 12 months + potential extensions of up to 24 months
Security Clearance: Ability to obtain an NV1 security clearance
Working Arrangement: Hybrid

The Opportunity AC3 is seeking an experienced Senior IBM Integration Developer to join a major Federal Government agency on a long-term contract.

This is an excellent opportunity for a hands-on integration specialist to contribute to the development, enhancement and security of complex enterprise integration platforms supporting critical government services.

The successful candidate will bring strong technical expertise in IBM App Connect Enterprise (ACE), IBM API Connect (APIC), ESQL and Java, along with experience delivering secure, scalable integration solutions within large enterprise environments.

Key Responsibilities

- Design, develop and maintain enterprise integration solutions using IBM ACE and IBM API Connect.
- Develop message flows, transformations and integration logic using ESQL and Java.
- Design and implement APIs, service interfaces and XML schemas.
- Troubleshoot and resolve complex integration and messaging issues.
- Implement secure integration solutions using TLS, PKI and relevant security standards.
- Contribute to cyber security remediation, system enhancements and platform uplift initiatives.

About You

To be successful in this role, you will have:

- Strong hands-on development experience with IBM App Connect Enterprise (ACE) or IBM Integration Bus (IIB).
- Demonstrated experience with IBM API Connect (APIC).
- Strong programming experience using ESQL and Java.
- Experience developing REST/SOAP APIs, web services and enterprise messaging solutions.
- Sound knowledge of XML,



XSD, JSON and message transformation.
- Experience implementing secure integrations using TLS, PKI and certificate management.
- Strong troubleshooting, technical design and documentation skills.
- Experience delivering integration solutions within large, complex enterprise environments.
- Excellent communication skills and the ability to collaborate with technical and non-technical stakeholders.

Highly Regarded

- Previous experience working within Australian Federal Government agencies.
- Experience with cyber security remediation, compliance or technology uplift initiatives.
- Familiarity with Australian Government security frameworks, including the ISM, PSPF and Essential Eight.
- Experience with IBM MQ, middleware platforms and CI/CD practices.
- Previous experience providing technical leadership or mentoring developers.

Security Clearance & Working Arrangements

Candidates must hold or be able to obtain an NV1 security clearance

The successful candidate will be required to work onsite for the initial six weeks, followed by a potential hybrid arrangement with a minimum of three days per week in the office, subject to approval.

What's on Offer?

- Initial 12-month contract with potential extensions of up to 24 months.
- Opportunity to work on critical, large-scale Federal Government systems.
- Work with established IBM enterprise integration technologies.
- Potential hybrid working arrangements.
- Collaborative technical workplace with opportunities to contribute to major integration and security initiatives.

Apply Now If you're an experienced IBM Integration Developer looking for your next long-term Federal Government contract, we'd love to hear from you.

Apply now with your updated CV, or contact the AC3 Talent team for a confidential discussion.

📌 Senior IBM Integration Developer (Melbourne)
🏢 AC3
📍 Melbourne