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DevOps Engineer (Senior Application Support Engineer - Billing Applications) at Jobgether. This position is posted by Jobgether on behalf of a partner company. We are currently looking for a DevOps Engineer (Senior Application Support Engineer – Billing Applications) in India.. This role offers the opportunity to take ownership of critical billing applications in a high-impact, enterprise environment. You will be responsible for maintaining, troubleshooting, and optimizing key systems that ensure accurate and reliable billing operations. The position requires hands-on technical expertise, strong problem-solving skills, and the ability to work collaboratively across multiple teams. You will manage incidents, requests, and changes while contributing to process improvements and system stability. This role involves on-call support and rotational shifts aligned with EU business hours, providing exposure to global operations. You will work with a diverse technology stack, including IBM Informix, Java, C#, VB.NET, and shell scripting, and play a key part in ensuring the seamless operation of billing workflows.. . Accountabilities. . Develop, maintain, and support enterprise billing applications such as IAS, IBS+, IBBR, and IBPS.. . Manage ServiceNow tickets, including incidents, requests, and change management tasks.. . Troubleshoot and resolve application issues promptly to minimize business impact.. . Write, optimize, and maintain code using IBM Informix 4GL, Java, C#, VB.NET, and Shell scripting.. . Support end-to-end billing processes and ensure application reliability.. . Participate in rotational on-call support during weekends or EU business hours.. . Collaborate with cross-functional teams to identify improvements and enhance system performance.. . . . 4+ years of experience in enterprise application support, preferably with billing applications.. . Strong coding skills in IBM Informix 4GL, Java, C#, VB.NET, and Shell scripting.. . Hands-on troubleshooting experience with Informix database errors and complex workflows.. . Familiarity with billing processes, application lifecycle, and enterprise-scale systems.. . Willingness and flexibility to work in rotational/EU shifts.. . Bachelor’s degree in Computer Science, IT, or a related field.. . Preferred certifications in Java, Informix, or related technologies.. . Excellent problem-solving, analytical, and communication skills.. . Ability to work independently and as part of a collaborative team. Company Location: India.