Software Engineer - ACI Base24 (Classic)
Job Title: Software Engineer – ACI Base24 (Classic)
Location: Atlanta, GA (Onsite/Hybrid)
Seeking an experienced Software Engineer with strong hands-on expertise in ACI Base24 Classic for ATM/POS payment processing. This role includes configuring Base24 components, supporting daily operations, enhancing interfaces, and ensuring stable transaction processing for high-volume financial environments.
Key Responsibilities:
- Configure, customize, and maintain ACI Base24 Classic components for ATM/POS transaction processing.
- Work with Base24 interfaces including payments switches, host systems, and card networks.
- Troubleshoot production issues related to transaction routing, authorization, BIN routing, and terminal management.
- Monitor system performance and support 24x7 operational environments.
- Develop enhancements and scripting modifications where required for Base24 applications.
- Collaborate with network, payment operations, and infrastructure teams to support stable transaction flow.
- 5–10+ years of experience working with ACI Base24 Classic in a banking or payments environment.
- Strong knowledge of card authorization, terminal management, PIN translation, and payment switching.
- Hands-on experience with Base24 configuration, parameter updates, and deployment.
- Strong debugging and problem-solving capability for live transaction issues.
- Experience with Tandem/HP NonStop, TAL/TACL, COBOL, C, or similar environments.
- Experience integrating Base24 with networks such as VISA, Mastercard, STAR, NYCE, Interlink, etc.
- Knowledge of ISO 8583 message specifications.
- Familiarity with ATM/POS compliance standards and transaction security.
- Strong communication and documentation skills.
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