Base24 Developer & IST Developer Walkin Drive

Dear Candidate, We are pleased to inform you that your candidature has been shortlisted for the OPUS Recruitment Drive scheduled for Saturday, 25 July , in Chennai . Date: 25 July 2026 (Saturday) Time: 11:00 AM Venue: Hotel Turyaa No. 144/7, Rajiv Gandhi Salai, Elango Nagar, Perungudi, Chennai, Tamil Nadu 600096 Point of Contact – Shashikant Tekade Contact person number - 9923509765 Job Description IST Switch Developer Position: IST Switch Developer Experience: 38 Years Location: As per business requirement Key Responsibilities: Develop, customize, and maintain IST Switch applications and payment transaction processing systems. Work on card payment networks, ATM, POS, and electronic transaction processing. Analyze business requirements and provide technical solutions for switch-related enhancements. Troubleshoot and resolve issues related to transaction processing, interfaces, and integrations. Develop and support ISO 8583 message formats and payment switch protocols. Coordinate with business, testing, and support teams for implementation and production support. Perform code reviews, unit testing, and ensure compliance with coding standards. Support system upgrades, patches, and performance tuning activities. Required Skills: Strong experience in IST Switch development and support . Good understanding of payment systems, ATM/POS transactions, and card management systems . Knowledge of ISO 8583 messaging standards . Experience with Java, C, C++, Unix/Linux, Shell Scripting, and SQL . Understanding of interfaces, APIs, and transaction processing systems. Strong debugging, troubleshooting, and analytical skills. Experience in banking or financial services domain preferred. Preferred Qualifications: Bachelor's degree in Computer Science, Information Technology, or related field. Experience with payment gateways, card switches, or digital banking solutions. Good communication and stakeholder management skills. Domain: Banking & Financial Services (Payments & Cards)