[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All América Móvil jobs](https://jobs.opennash.com/companies/america-movil/) · [Search jobs](/search/) América Móvil · Sofia # Second Level Billing Systems Support Specialist Sofia Full-time IT & Infrastructure Listed on América Móvil’s official careers site. Posted September 29, 2026. Check that it is still open and apply there. [Apply on América Móvil’s careers site →](https://jobs.a1.com/bg/jobs/job/8183-second-level-billing-systems-support-specialist) [OpenNash Jobs](https://jobs.opennash.com/) / [América Móvil](https://jobs.opennash.com/companies/america-movil/) / Second Level Billing Systems Support Specialist ## Job description Strength. Care. Growth Did you know that A1 Bulgaria is working on international projects as well? Our wide portfolio has long past the telecom services, and we are now offering digital solutions to millions of corporate, public, and private customers. State-of-the-art technology, the latest innovations, and extremely talented professionals in various areas help us deliver the best-in-class products, services, and customer experience. You’ll know A1 Bulgaria is the right place for you if you are driven by: Opportunities to learn and build your career. Meaningful work in a stable and fast-paced company. Diversity of people, projects, and platforms. A supportive, fun, and inspiring place to work. Would you like to join us? Ivaylo Petrov is looking for a new team member. Your daily routine would include: Administer, monitor and maintain the supported systems in operation within the required parameters (availability, performance). Support testing and production environments, deploy builds and fixes, sanity testing and troubleshooting. Prepare and execute tasks related to billing/rating/batch processing. Monitor application servers and workload. Handle incidents (analyze logs, errors handling, finding resolutions or workarounds within the specified SLAs/OLAs). Work with ticketing system to resolve reported problems or submit such to responsible units in case of failures or tasks. Prepare regular and ad-hoc reports. SOX controls execution. Develop tools/scripts to automate routine operational tasks. Ability to take up on-call shifts. Maintain system documentation. We’ll know you can make it if you have: At least 1 year of working experience in monitoring/reporting/supporting applications. SQL Knowledge (Oracle) is a must. Unix/Linux experience is a must. University degree in the field of IT/Telecommunication or any other relevant. Fluency in English – written and spoken. ### Nice to have Any knowledge and/or experience with UC4 (Automic), Job Scheduling. Advanced Scripting Knowledge e.g. Perl, Python, Shell, Kshell etc. ITIL (Incident-, Problem-, Change-, Deployment-, Event-Management). Knowledge of 2-tier or 3-tier applications - J2EE servers and applications experience. Fluency in German. Our gratitude for the job done will be eternal, but we’ll also offer you: Innovative technologies and platforms to “play” with. Modern working environment for your comfort. Friendly, ambitious, and motivated teammates to support each other. Thousands of online and in-person learning opportunities to grow. Challenging assignments and career development opportunities in multinational environment. Attractive remuneration package. Flexible working schedule and opportunity for home office. Numerous additional goodies, including, but not limited to free A1 services, discounts, health insurance and services, sports center, childcare, team and family events, etc. Not sure yet? See us in action in our A1 Blog. Any questions? Contact Mariya Ivanova. Sounds good? Apply now! Only shortlisted candidates will be contacted. ## At a glance - Posted by the employer: Sep 29, 2026 - First seen by OpenNash: Oct 11, 2026 - Last checked: Oct 18, 2026 - Listed for: 19 days - Location: Sofia - Employment type: Full-time[Apply on América Móvil’s careers site →](https://jobs.a1.com/bg/jobs/job/8183-second-level-billing-systems-support-specialist) ## More jobs at América Móvil ### [Data Engineer](https://jobs.opennash.com/companies/america-movil/jobs/e71b0989d204de210d82/) Sofia ### [Tibco Developer](https://jobs.opennash.com/companies/america-movil/jobs/55880bfda406bd020679/) Sofia ### [Automation Team Lead](https://jobs.opennash.com/companies/america-movil/jobs/2cba9a97a822bcf73844/) София ### [Azure Architect (German)](https://jobs.opennash.com/companies/america-movil/jobs/bfc23e67fe0a34eaa2b0/) София ### [Corporate IT Intern](https://jobs.opennash.com/companies/america-movil/jobs/7163e302d714ddad1559/) Skopje ## Similar jobs at other companies ### [Computer Systems Technical Support Analyst](https://jobs.opennash.com/companies/lockheed-martin/jobs/08d36d42a814c53228b3/) Lockheed Martin · Brussels, BEL ### [Training Systems Support Lead](https://jobs.opennash.com/companies/lockheed-martin/jobs/c4839df4ae2bfdc769a0/) Lockheed Martin · Rockhingham, AUS ### [EHS Specialist - Second Shift](https://jobs.opennash.com/companies/siemens/jobs/f6b31d4ecf803215d3e8/) Siemens ### [B2B EDI Systems Support Specialist, ANZ](https://jobs.opennash.com/companies/thermo-fisher-scientific/jobs/f9de4d8d27b375c7ae3c/) Thermo Fisher Scientific · Bangalore, Karnātaka, India ### [ERP Second Level Support (RUN) – Analyst (Services)](https://jobs.opennash.com/companies/vertiv-holdings/jobs/fb019f9965696b1e0740/) Vertiv Holdings · Pune, India OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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