Максим

MAKSYM GRUNSKYI
DWDM / OTN / Optical Transport Network Engineer
Kyiv, Ukraine | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)

PROFESSIONAL SUMMARY
DWDM / OTN Transport Network Engineer with 6+ years of vendor-level experience in designing, deploying, and
optimizing carrier-grade optical transport networks and extensive telecom background. Experience in end-to-
end delivery of a new nationwide DWDM network (250+ Network Elements), covering all steps: High-Level and
Low-Level Design (HLD/LLD), optical link budgeting, TI, commissioning, testing, customer acceptance and support
existing long-haul and metro DWDM networks with Level 2 operational support. Deep expertise in OTN standards, ROADM systems, multi-span
optical path engineering, NMS platforms, CSR incident handling, troubleshooting, and subcontractor/customer project communication in English-
only working environment.

TECHNICAL SKILLS
Optical & Transport: DWDM, OTN, ROADM, SDH, Optical Path Engineering, WDM Physics, Optic Fiber types
Network Design & Planning: High-Level & Low-Level Design (HLD/LLD), Link Budget Calculation, OSNR Margin Analysis, Capacity Expansion.
Deployment & Commissioning: TI (Telecom Installation) Support, Commissioning of Optical Nodes, Acceptance Testing, System Upgrades.
NMS & Vendor & Operations: U31 & UME Optical NMS platforms, ZTE 9700, 9700E/19700 series, Remote & On-site Troubleshooting, Optical
Power Monitoring, CSR Ticket Lifecycle Management.
Telecom & Mobile Backhaul: Fiber Infrastructure, Mobile Backhaul (2G GSM/EDGE, 3G NodeB, 4G LTE integration), Transmission Outage
Analysis.
Logistics & Project: Spare Parts Management System, Communicating with subcontractor & client, SLA Compliance control.

PROFESSIONAL EXPERIENCE

DWDM / OTN Transport Network Engineer 10.2020 – Present
ZTE Corporation / ZTE Ukraine
End-to-end technical delivery and operational support for a nationwide DWDM network rollout, deploying 250+ new Network Elements
(NEs).
Support existing long-haul and metro DWDM networks with expansions and reconfigurations
High-Level & Low-Level Design (HLD/LLD) specifications for brand new node installations, network expansions, creating and executing MOP
documents for existing node reconfigurations.
Supervised Telecom Installation (TI) activities, performed commissioning, testing, integration, and customer acceptance of optical
transmission equipment.
Provided advanced Level 2 remote and on-site optical fault investigation, Customer Service Requests (CSR) handling, SLA tracking.
Managed spare parts logistics (SPMS) according SLA compliance.
Senior NOC Engineer (Lifecell Project) 04.2017 – 10.2020
NEXUS Engineering Ltd
Directed 1st and 2nd level incident management across 2,000+ mobile network sites across Kyiv (1400+), Chernihiv (300), and Cherkasy
(300) regions.
Analyzed and diagnosed root causes of mobile transmission (TN) outages affecting 2G GSM, 3G NodeB, and 4G LTE multi-carrier sites.
Coordinated emergency field service teams and client transmission engineers during optical fiber cuts and backhaul failures.
Delivered comprehensive network outage and availability analytics to executive management; mentored junior NOC shift engineers.
Senior NOC Engineer (Lifecell & Kyivstar Projects) 09.2012 – 04.2017
Bisem Telecom & ESU
Monitored 24/7 nationwide cellular transmission networks (Kyivstar: 2012–2014; Lifecell: 2015–2017), handling critical alarms and network
availability tracking.
Managed spare equipment inventories, dispatched field engineering teams, and conducted post-incident reviews.

EDUCATION LANGUAGES
• Master's Degree: Marketing (2013) • English: Upper-Intermediate (B2)
Kyiv National University of Trade and Economics • Ukrainian: Native
• Driving license B category