Nisal L. Ratnayake's Email

Highly passionate and results orientated Telecommunications/ICT Engineering specialist who is capable of achieving organizational goals through operational leadership and domain expertise with "Yes, we can" attitude. Expertise in delivering multidisciplinary industry projects with over 8 years of experience and doctoral qualifications in Telecommunications/ICT domain. In-depth theoretical and sound practical knowledge in technical project delivery and consultations, Systems Engineering, RF Engineering, network planning and implementation (access, core, and transmission networks), Telecommunications/ICT protocols and standards (Diameter, Radius, SS7, HTTP, LDAP, SIP, H.248, MGCP, SOAP, SNMP, CORBA, XML, TCP/IP, SCTP), research and development (RF and Systems Engineering) and troubleshooting of technical issues. • Experience in deploying and consulting multimillion dollar industrial projects starting from project proposal development, defining solution architecture and scope, commissioning, troubleshooting and documentation • Worked with international vendors such as Ericsson, Alcatel, F5, Huawei, HP, IBM, CISCO, Celltick, Onmobile and WaveNet and operators such as Vodafone Australia, Vodafone New Zealand, PLDT & SMART Philippines and Dialog Telekom Sri Lanka for numerous projects • Specialized theoretical and practical knowledge in wireless and radio access networks (RANs), especially in RF network planning, capacity planning, performance KPIs analysis, antenna designing and ACMA spectrum management requirements • In depth knowledge in radio wave propagation and propagation models (UHF,VHF,SHF & EHF bands) and standards (ITU, P25, 3GPP, UMTS & LTE) • Hands-on experience in deploying HP c7000 blade servers, HP DL380, IBM 3550, CISCO and Brocade switches/routers • Knowledge in Australian workplace safety standards • Computer expertise: Linux, Windows, VMWare, Citrix, Java, C, Matlab, AutoCAD, Oracle, LaTex and Ms Office packages

Senior Consultant - Asia Pacific and Japan (APAC & J) @ As a Senior Consultant at C-Serv, Nisal is assigned to the 'F5 Networks Australia' team. • Developing solution proposal documents mainly high level design (HLD) and low level design (LLD) diagrams and documents for deploying LTE based F5 Diameter Edge Router (DEA) and Diameter Routing Agent (DRA) solutions deployed in customer networks • Liaising with operations and partners to capture solution and hardware requirements • Deploying and configuring hardware according to customer and solution requirements • Install, configure and commission F5 Java based Diameter Traffix application on Linux OS • Writing scripts on Groovy (Java based) language to customize solution for customer requirements. • Integrating DRA with internal Telecommunication nodes and DEA with external operator/ IPX nodes ensuring Telecommunicates standards and regulations • Integrating system with Diameter, Radius, HTTP, LDAP, SS7 and SIP peers and agents • Configuring system security and access control mechanisms • Worked with multicultural internal staff, Telecommunications operators and partners From October 2013 to Present (2 years 1 month) Brisbane and Sydney Area, AustraliaDesigner/ FIR (NBN Project) @ • Preparation of Field Inspection Report (FIR), which involves collating demographic data from the preliminary design of the Fiber Distribution Area into an MS Excel/ESRI • Using GIS/ SpatialNET and FIR reports to the preliminary (Gate 1) design of the Fiber Distribution Area (the most cost optimized design, including determining placement of plant equipment, augmenting and remediating existing Telstra infrastructure, Splicing etc.) • Liaising with field staff to resolve in field design variations and assisting them with other design queries • Completed NBN occupational health and safety (OHS) requirements • Liaising with NBNCo. (Client) to ensure the design meets expected client KPI standards From May 2013 to October 2013 (6 months) Queensland Area, AustraliaResearch Engineer @ • Worked with CSIRO RF specialists to conduct world’s first field experiments for innovative multi-user-MIMO antenna fixed long-range wireless broadband access system, proposed to provide high-speed broadband for rural Australia • Developed an LTE planning tool which can accurately predict received signal level and system capacity using the state-of-the-art radio propagation models • Designed wireless links (UHF band) to minimize diffraction effects • Developed an accurate diffraction loss prediction tool using accurate terrain data obtained from NASA • Conducted a detailed performance review about existing SLTE MIMO models • Held responsibility for QUT’s measurement equipment • Shared knowledge with CSIRO’s RF experts in wireless communications area • Worked with a multicultural technical staff From June 2009 to May 2013 (4 years) Gardens Point CampusSessional Academic @ • Introduction to Telecommunications • Digital Communications • Fields, Transmission and Propagation (Semester 1, 2011) • Fields, Transmission and Propagation (Semester 1,2010) From February 2010 to December 2011 (1 year 11 months) Gardens Point CampusEngineer VAS Planning and Operations @ Dialog Telekom PLC is Sri Lanka’s flagship mobile operator, with a customer base of over 6 million. It is a subsidiary of Axiata Group which is one of the largest Asian telecommunication companies • Responsible for operational and maintenance processes of the value added service systems including (a) Cell Broadcasting (b) Missed Call Alert (c) USSD (d) Phone Backup (e) OTA-Device Management (f) Mobile Surveillance • Handled world’s first GSM/3G network based disaster management project (such as Tsunami warning massages) using cell broadcasting • Conducted the integration of Ericsson BSCs to cell broadcasting platform through service LAN • Professional experience in analyzing and troubleshooting SS7 connection issues using Tektronix K15 and K1297 protocol analyzers • Attended and restored services during service outages • Responsible for communicating with the international service providers, plan and execute live service upgrades • Experience in critical technical decision making in high pressure situations while handling planned live service outages • Installed and configured VAS live services and network monitoring systems which include Nagios and Netcrunch (SNMP Protocol) • Conducted Linux operating system upgrades for missed call alert platform • Experienced in troubleshooting TCP/IP based service issues using TCP dumps • Handled escalated customer complaints • Involved in Telecom equipment procurement process • Attended on-call services From June 2007 to May 2009 (2 years) Technical Support Engineer @ • Reviewed work orders received from operators & identified the project scope • Reviewed Engineering drawings, identified & ordered relevant equipment for installations • Visited the sites at various stages of the project to ensure installation is done up to the operator and occupational safety and health (OHS) standards • Prepared relevant project documentations • Fed necessary project completion data to operator information systems (Complete DBoRs) • Liaised with subcontractors, operator and other parties to achieve the on time project delivery • Worked with a multicultural technical staff From January 2007 to June 2007 (6 months) ColomboTrainee Engineer @ • Conducted tasks related to GSM Core network planning and operations • Perform feasibility studies through site survey, preparation of deliverable reports • Preparation of high level network design with network topology to meet the customer requirements • Preparation of low level design including IP network design, signalling network design • Preparation of network expansion plan / upgrade plans • Trained in mobile base station commissioning for Ericsson, Alcatel and Huawei vendors From April 2006 to September 2006 (6 months) Trainee Engineer @ • Trained in mobile base station commissioning From May 2005 to July 2005 (3 months)

BSc(Engineering), Electrical and Electronic @ University of Peradeniya From 2003 to 2007 S Thomas' College From 1989 to 2002 Doctor of Philosophy, Telecommunications @ Queensland University of Technology Nisal L. Ratnayake is skilled in: Wireless, Telecommunications, Mobile, GSM, Matlab, Microwave, Research, Testing, Planning, LTE, MIMO, BTS Installation, Project Planning, Mobile Devices, 3G, TCP/IP, Integration, Wireless Networking, Troubleshooting, Linux, RF