**Make an impact with NTT DATA** Join a company that is pushing the boundaries of what is possible. We are renowned for our technical excellence and leading innovations, and for making a difference to our clients and society. Our workplace embraces diversity and inclusion – it’s a place where you can grow, belong and thrive. **Business Functional Analyst - UCC & Operator Connect** **Location: Cluj-Napoca, Romania (Client Managed Service Environment) - Hybrid (2 days per week on site)** **Role Overview** At NTT DATA, we help organisations modernise critical technology foundations to unlock agility, resilience and growth. As a Business & Functional Sr Analyst – Voice Engineering, you will play a key role in delivering a strategic Unified Communications transformation for a major client in Romania. Supporting the migration from legacy Avaya UC to Microsoft Teams Voice, you will enable seamless transition through structured data analysis, number lifecycle management and detailed functional validation. Working within a managed service environment, you will partner closely with the Project Manager, voice engineering teams and client stakeholders to ensure the programme is delivered with precision, transparency and control. **What You’ll Be Doing** + Perform detailed data and functional analysis to support migration from Avaya UC to Microsoft Teams Voice + Analyse, validate and reconcile telephony inventories including DIDs, number ranges, routing paths and carrier information + Support number lifecycle management including porting coordination and carrier engagement + Track and manage porting formats, regulatory requirements and local numbering compliance (Romania) + Produce and maintain migration wave plans, number mapping documentation and transition trackers + Support Operator Connect and Direct Routing deployment analysis within Microsoft Teams + Assist with troubleshooting and validation of enterprise telephony configurations including SIP, SBC behaviour and PSTN fundamentals + Use network troubleshooting tools and QoS/VoIP testing methodologies to support issue analysis + Maintain RAID logs, status reports and executive-ready reporting documentation + Capture meeting minutes, action logs and governance documentation + Collaborate with engineering teams and customer stakeholders to ensure accuracy, readiness and successful cutover execution **What You’ll Bring** + 3+ years’ experience in a Project Analyst, Project Coordinator or similar analytical support role within IT or telecom environments + Strong understanding of Unified Communications systems and enterprise telephony principles + Knowledge of DIDs, SIP, SBC behaviour, number routing, carrier porting rules and PSTN fundamentals + Experience supporting Microsoft Teams telephony (Operator Connect, Direct Routing and Teams Voice features) + Familiarity with telecom carrier portals, porting formats and global numbering regulations + Exposure to network troubleshooting tools and VoIP/QoS validation approaches + Strong analytical capability — able to gather, interpret and present complex data clearly and accurately + Excellent written and verbal communication skills, including production of reports, trackers and governance documentation + A structured, detail-oriented approach with the ability to work within defined programme timelines **About Us** NTT DATA is a trusted global innovator of IT and business services, helping clients transform through consulting, industry solutions, business process services, digital and IT modernisation. We combine deep industry expertise with cutting-edge technology to deliver secure, scalable and future-ready solutions. Our teams are driven by purpose — to create positive impact for our clients, our communities and society. At NTT DATA, we respect every voice, think big and bold, deliver the outcome and win together. **Workplace type** **:** **About NTT DATA** NTT DATA is a $30+ billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world’s leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. Our consulting and industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is part of NTT Group, which invests over $3 billion each year in R&D. **Equal Opportunity Employer** NTT DATA is proud to be an Equal Opportunity Employer with a global culture that embraces diversity. We are committed to providing an environment free of unfair discrimination and harassment. We do not discriminate based on age, race, colour, gender, sexual orientation, religion, nationality, disability, pregnancy, marital status, veteran status, or any other protected category. Join our growing global team and accelerate your career with us. Apply today. **Third parties fraudulently posing as NTT DATA recruiters** NTT DATA recruiters will never ask job seekers or candidates for payment or banking information during the recruitment process, for any reason. Please remain vigilant of third parties who may attempt to impersonate NTT DATA recruiters—whether in writing or by phone—in order to deceptively obtain personal data or money from you. All email communications from an NTT DATA recruiter will come from an **@nttdata.com** email address. If you suspect any fraudulent activity, please contact us (global.careers@nttdata.com) .