Nuwan Jeewantha

Experience

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  Eye Technical Academy

  Nov 2005 - Jun 2007

  Owner - Lecturer/Instructor

  - Industrial and House Wiring 6 months Course- MS Office 6 Months Course- Graphic Design (Photoshop and Corel Draw) 6 Months Course- Programming Language Course 6 months (HTML, JAVA, C++)

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  Tigo Private Limited

  Jun 2007 - Jun 2012

  Network Operations Engineer

  • Ensure reliability of the Base Station Controllers, 2G and 3G Radio Base Stations, Transmission network by taking appropriate and timely preventive action and to resolve operational problems and minimize down time.• Commissioning, maintenance, configuration and operations of telecommunications devices such as Base Transceiver Stations (BTS), Microwave Radio equipment, Routers, Switches, Add Drop Multiplexers. • Corrective and preventive maintenance of Generators/Rectifiers/inverters/UPSs/AC/Fire protection systems, in order to ensure the reliable and healthy power operations of Radio Base Stations.• Design and implementation of grounding system, for proper lightening protection. • Planning, designing the cellular network in terms of frequency, coverage and capacity to meet the company’s business plan. • Evaluating new products and services to ensure conformity with expected specifications of the company. • Reviewing proposals and quotations from vendors and suppliers.• Ensuring compliance with laws, regulations, policies and procedures laid down by the Central Environmental Authority (CEA) and Telecommunication Regulatory Commission (TRC) in the provision of cellular telecom systems. • Selecting site locations for new telecom sites and preparation of Technical site suitability Report (TSSR) for approval, and following through to approval • Identifying and analyzing problems and needs of existing telecommunications systems, such as frequency interference, to determine the most appropriate means of reducing, eliminating and avoiding current and future problems and improve communications with the help of TRC. • Continuous monitoring of the network to assess the performance levels of network nodes and elements to ensure the capacity requirement to be par in company specifications. • Coordinate with Transmission Operations and Planning, Network Planning and Optimization, and Project team to implement network upgrades and changes related to KPIs. Show less

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  Etisalat Lanka (Private) Limited

  Jun 2012 - Apr 2019

  Managed the maintenance and strategic enhancement of power systems across an extensivetelecommunications network, achieving a 99.9% power availability rate. This included optimizing powerdistribution and redundancy strategies, which resulted in significant operational cost reductions whilemaintaining high system reliability.Led a comprehensive DC power optimization project, revamping power distribution and redundancyat a key switching center. The project incorporated advanced power management strategies, whichenhanced overall system reliability, efficiency, and performance, aligning with the organization's goalsfor low-power design and power optimization.Initiated and executed a hybrid power solution, integrating solar PV systems, diesel generators, andcommercial power. This project, valued at $1 million, served as a benchmark for future sustainablepower initiatives and successfully reduced operational costs by 30%. The solution not only improvedsystem sustainability but also laid the foundation for more resilient power management across criticalsites.Oversaw a large-scale battery backup enhancement project, covering over 600 base stations identifiedas critical to network operations. The project, valued at $1.9 million, significantly boosted the reliabilityand resilience of the network, ensuring uninterrupted service even during power disruptions. Show less ● Led a team of engineers in the maintenance and troubleshooting of critical telecom equipment and power systems, ensuring high standards of network availability and system reliability across the national network.● Developed and enforced a preventive maintenance regime that notably decreased equipment failures and maintained exemplary network performance.● Managed multiple power-related projects, such as the upgrade and optimization of power systems at telecom base stations, which bolstered network resilience and significantly curtailed operational costs.● Collaborated closely with project managers and technical teams to ensure the successful implementation of power systems projects, maintaining stringent compliance with industry standards and safety protocols.● Played a key role in strategic planning sessions for network expansion and enhancement, providing expert advice on power systems design and integration to improve overall infrastructure reliability and performance. Show less

  • Senior Power Systems Engineer

    Mar 2017 - Apr 2019

  • Senior Field Operations Engineer

    Jun 2012 - May 2017
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  Shakthi Engineering Service Private Limited

  Apr 2019 - Nov 2020

  Senior Electrical Design Engineer

  Led the design and implementation of complex electrical systems, tailored to meet the specificrequirements of commercial and industrial clients, with a strong focus on sustainable practices andenergy efficiency.Directed the electrical installation of 25 new Arpico Super Stores across the country, overseeing aproject with a total cost of $25 million, including $2.4 million allocated specifically for electrification.Spearheaded the electrical installation for a booster pump station at Katunayake Airport, incorporatingadvanced control systems that optimized the water supply infrastructure and significantly improvedoperational reliability.Conceptualized and deployed off-grid solar PV systems for remote locations, effectively reducingreliance on conventional power sources and lowering operational costs for clients.Managed the installation and commissioning of comprehensive fire detection systems acrossmultiple commercial sites, ensuring full compliance with the latest safety standards and operationalrequirements.Provided ongoing post-installation support and maintenance guidance to clients, ensuring optimalsystem performance and equipping client teams with the knowledge to manage and troubleshootoperations independently. Show less

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  LAK COM PVT LTD

  Nov 2020 - Aug 2022

  Senior Electrical Design Engineer

  Led the full project management lifecycle from initial concept development through to finalimplementation, ensuring technical precision, strict budget adherence, and stakeholder satisfaction.Managed cross-functional teams, aligning project outcomes with the organization's strategic goals.Conducted comprehensive client consultations to define project requirements, resulting in customizedpower management solutions. Delivered all projects on time and within budget, which enhanced clientsatisfaction and retention.Developed and implemented a sophisticated generator operation monitoring system for a major telecomoperator. This system, valued at $0.5 million, enabled real-time data acquisition and remote control ofover 300 generators, significantly improving operational efficiency and system reliability.Engineered, tested, and delivered advanced 40kW Automatic Transfer Switch (ATS) control panels,featuring remote monitoring capabilities. This project, valued at $800,000, enhanced the reliability andefficiency of backup power systems across several client sites.Managed the rapid design, fabrication, and delivery of major distribution boards (630A and 400A MDBpanels), valued at $1.5 million. Despite tight deadlines, ensured timely project delivery, maintainingcontinuity under urgent conditions while meeting all technical and safety standards.Collaborated with cross-functional teams, including software developers and system integrators, toenhance product functionality. This collaboration resulted in highly efficient and user-friendly systems,aligning with the company's emphasis on continuous improvement and power optimization.Maintained comprehensive project documentation, ensuring smooth transitions and consistentoperational continuity during project handovers, which facilitated future system upgrades andmaintenance. Show less

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  Freelance

  Sept 2023 - now

  Senior Electrical Design Engineer (Freelance)

  • Provided specialized electrical design and consultancy services for multiple Sri Lankan clients, focusing on LV and ELV systems.• Developed detailed electrical schematics, layout drawings, and lighting designs using AutoCAD Electrical, Revit, and Dialux.• Designed power distribution networks, motor control systems, and renewable energy integrations to international standards.