KASHISH SETHI
Gurgaon
Summary
High-stakes UC/Voice Engineer with 10 years of experience delivering 99.9%+ uptime, resolving 2000+ P1/P2 global outages, and engineering highly available Cisco & Microsoft communication platforms across financial, healthcare, and enterprise environments. Specialized in SIP diagnostics, multi-cluster UC architecture, cloud telephony integration, and reliability engineering. Reduced MTTR by 60%, improved call success rates by 20%, and consistently ranked in the top performance tier for incident resolution.
Overview
10
10
years of professional experience
1
1
Certification
Work History
Senior Voice Engineer
Universal Technology Solutions
06.2020 - Current
- Maintain 99.9%+ UC uptime across enterprise multi-site infrastructures.
- Resolved 2000+ P1/P2 incidents with >98% SLA compliance.
- Lead engineer for SIP routing, HA strategy, DR planning, and UC architecture.
- Support 50,000+ endpoints across multi-cluster CUCM deployments.
- Performed large-scale UC infrastructure upgrades, ensuring compliance with Cisco recommendations and strengthening system resilience with minimal downtime.
- Drove proactive vulnerability management across UC infrastructure, remediating 500+ high-severity findings
- Improved call success rates by 18–20% via SIP optimization and SBC tuning.
- Produced 1000+ RCAs reducing recurring issues by 40%.
- Authored 35+ SOPs and runbooks improving team efficiency by 20–30%.
Senior Systems Engineer
FIS Global
07.2018 - 07.2020
- Technical Lead for the IP Telephony team.
- Supported 100,000+ endpoint UC platforms for global financial environments.
- Resolved 40+ monthly P1/P2 issues, achieving 99.99% uptime.
- Improved call quality metrics by 25% through QoS and codec tuning.
- Worked cross-functionally with Security and Network teams to resolve VoIP and VPN interoperability issues, ensuring secure and reliable call flows and diagnose signalling and media path failures affecting UC services.
- Led Expressway implementations end-to-end, coordinating with VPN and Security teams to achieve secure external connectivity for customer UC environments.
- Delivered high-quality documentation to support project requirements, enabling smooth hand-off to stakeholders.
Associate Network Engineer (Cisco TAC)
Aricent Technologies
12.2015 - 07.2018
- Achieved 92% first-contact resolution for complex SIP and UC issues.
- Recreated customer issues in lab environments, reducing RCA time by 30%
- Delivered high-impact diagnostics and upgrade advisory notes.
- Conducted troubleshooting for complex network problems, ensuring minimal downtime during incidents.
Education
Bachelor of Engineering - Computer Engineering
University of Pune
Pune, India06-2015
Skills
- Unified Communications: Cisco CUCM, CUBE, Unity, UCCX, Webex, Teams Phone, SIP, RTP/RTCP, QoS,
- Voice traffic analysis
- Cloud & Contact Center: Amazon Connect, Webex Control Hub, Teams Direct Routing, Hybrid Calling
- Infrastructure: Cisco UCS, VMware ESXi, ISR/ASR Routers, ASA Firewalls, HA/DR planning
- Diagnostics: Wireshark, RTMT, SIP ladder analysis, MOS scoring, CQD, CDR/CMR
- Automation: Python, Bash, PowerShell
- Certifications: CCIE Collaboration #58907, CCNP Data Center, Microsoft Teams & M365 Expert certifications
Certification
CCIE Collaboration
Timeline
Senior Voice Engineer
Universal Technology Solutions
06.2020 - Current
Senior Systems Engineer
FIS Global
07.2018 - 07.2020
Associate Network Engineer (Cisco TAC)
Aricent Technologies
12.2015 - 07.2018
Bachelor of Engineering - Computer Engineering
University of Pune
PROJECT HIGHLIGHTS
Led UC modernization initiatives reducing vulnerabilities by 40%., Implemented hybrid calling for 5000+ users reducing PSTN operational cost., Designed HA failover solutions lowering critical incidents by 30%.