Senior Technical Support Engineer L3-L4

We are expanding our Technical Support team and are looking for a highly experienced Technical Support Engineer (L3-L4) to join a long-term enterprise project in the energy sector.

You will be working on a mature enterprise project in the energy sector in Northern Ireland, where the system has been in production. This is an existing client, and the focus is on advanced support, maintenance, and continuous improvement.

The environment is highly regulated, making system reliability and billing accuracy critical.

End customers actively use the system, so we have real data, real financial flows, and real impact from every issue.

Support here is not a “ticket-processing role” – it is a core function ensuring system stability, revenue continuity, and customer trust.

Responsibilities:

• Provide L3–L4 support for a live enterprise billing & CRM system
• Investigate and resolve complex production issues (data, logic, integrations)
• Work closely with customers (in English) to clarify issues and provide solutions
• Analyze logs, database records, and system behavior to identify root causes
• Support billing, invoicing, rating, and customer lifecycle processes
• Collaborate with development, QA, and delivery teams on issue resolution
• Participate in post-release stabilization and continuous system improvements
• Contribute to knowledge base and documentation

Requirements:

• 7+ years of experience in technical support (L3/L4 level) or similar roles
• Strong hands-on experience with production troubleshooting
• Confident in writing and analyzing SQL queries
• Ability to understand complex systems end-to-end (backend + integrations)
• Strong analytical and investigative thinking
• Experience working with enterprise systems (CRM, billing, financial systems)
• Advanced English (C1)  – must be comfortable communicating with customers
• Ability to work independently without step-by-step guidance

Will Be a strong advantage:

• Experience with Oracle databases
• Background in QA or software development
• Experience in energy / utility domain
• Experience supporting live billing systems.

Working with MaxBill, you will receive:

• 20 working days of annual vacation per year, plus paid public holidays.
• Provision of sick/personal leave.
• Paid trainings, conferences, seminars, and certification courses, classes in English.
• On-the-job mentoring program to learn from experienced colleagues.
• The possibility of remote work and a flexible schedule.