Dhiraj Vijay Manjrekar
Mumbai
Summary
Cyber Security Consultant with passion for aligning security architecture plans and processes with security standards and business goals. Background designing and implementing layered network security approaches.
Overview
15
15
years of professional experience
1
1
Certification
Work History
Cyber Security Consultant
Tata Consultancy Services
12.2020 - Current
- Experience across multiple areas of Transition Management including resource management, planning, client relationship management and end to end project service delivery
- Spearheading the knowledge transfer and overall transition acceptance criteria
- Adhering to relevant escalation processes to escalate resource issues, delayed project phases, missed deadlines and other planning issues
- Identify and log risks identified during transition
- Understanding client's setup by assessing their architecture and suggest solution as per best security practices
- Developing Network Security strategies, roadmaps and assessments, high level solution designs
- Working with the implementation engineers to oversee the build and deployment of the solution
- Designing, Configuring and Implementing Network Security solutions
- Risk assessment of proposed and existing system architecture for compliance with security best practices, recommending technical controls to mitigate identified risks
- Responsible to deliver Infrastructure support on Incidents, Change Management, Service Improvements plans
Onsite Network Security Lead
Tata Consultancy Services
11.2017 - 12.2020
- Leading a team of L2 Security engineers for a leading Bank
- Administration and configuration for F5 LTM, Cisco ASA, Firepower IPS, Fire AMP endpoints, Fortinet Firewalls, Cisco ESA
- VPN Setup Configuration and troubleshooting on Fortinet Firewalls
- Security, Intrusion event analysis for IPS, AMP on daily basis and necessary actions for alarms
- Execution of Projects based on Client requirements
- Periodically reviewing and updating Firewall Rule base
- Creating SOP documents for daily operations
- Creating device hardening documents according to the regulatory compliance
- Facing internal audits for managed devices
- Helping leads to fine tune alerts in SIEM
- Ensure that environment is running with latest patch and antivirus definition
- Responsible for BCP and DR drill as per scheduled calendar
- Validate and supervise implementation activities prior to the installation/ upgradation of network security devices
- New Context creation, deletion, VLAN bridging Cisco ASA
- Upgradation for Cisco Firepower Chassis 9300 series
SIEM / SOC Analyst (L2)
Tata Consultancy Services
02.2015 - 11.2017
- Monitoring alert generated for real time logs and exceptions
- Implementation of security analytics for various customers across different geo-location
- Integration of Event Sources with SIEM, configuring different policies to meet the customer expectations
- Creating incidents for alerts triggered in SIEM and follow up until closure
- Investigating the events, collecting logs from RSA, raising security incidents, and escalating the violations
- Generating daily, weekly, and monthly reports from RSA for security monitoring systems
- Creating reports, rules, and dashboards in Security Analytics
- Preparing threat advisory to customer as per customer environment
- Anticipate new security threats and stay up to date with evolving infrastructures
- Integration of event sources such as windows, checkpoint, firewalls using SYSLOG, SFTP, ODBC etc
- With SIEM
- Owning incident and change processes doing impact and urgency assessment, team coordination for resolution and informing relevant stakeholders
- Performing vulnerability assessment and penetration testing for OS, network devices, security devices, websites, etc
- Using Nessus, Nexpose & Metasploit tools
Security Engineer (L2)
Tata Consultancy Services
02.2015 - 11.2017
- Working in Managed Services model
- Supporting Security devices for multiple clients
- Configuration and management of firewall (Cisco ASA 55XX, Checkpoint R75.20, R77.30, Fortigate)
- Identity Management solution FIM 2010 R2
- Automated user ID provisioning/de-provisioning
- Configuration & Management of Privileged Identity Management (PIM) solution ARCOS
- Managing Automated Password vault, Role based access provisioning
- Integration with Incident Management solution such as Service-Now
- Configuring SSL VPN (Array Networks, Cisco ASA)
- Managing Soft Token access through RSA SecID for two factor authentication of VPN users
- Troubleshooting and management of Cisco ACS server
- Managing Websense Data Security (version 7.8.3)
- Configuration/Monitoring/Reporting DLP policies and incidents
- Configuration and Management of Websense Web gateway
- Upgradation for ASA, Checkpoint, Websense
Network Security Engineer
HCL Technologies Limited
07.2013 - 01.2015
- Implementation & configuration of Web proxy server (IWSVA-5.1, IWSVA-5.6, IWSVA-6.0)
- Configuring HTTP/HTTPS access policies
- Configuring URL filtering policies
- Configuring IP & LDAP based access lists on Proxy servers
- Monitoring Checkpoint GAIA R76 server & analyzing logs & policy events in Smart View tracker & Dashboard
- Configuring Access/NAT policies on firewall
- Implementation & configuration of Email gateway (IMSS-7.1, IMSVA 8.1, IMSVA-8.2, IMSVA-8.5)
- Configuring Email policies on gateway of SMAM, SPOOF attacks
- Troubleshooting with Public mail domains like Yahoo, Gmail etc
- For mail NDR
- Providing security solutions and documentation to end users
- Implementation & Configuration of Antivirus server (Officescan 10.6)
- Monitoring and maintaining web access, Email quarantine PAN India level
- Handling a team of 8 L-1 security engineers
- Resolving issues related to internet access, Email blocking
- Implementing TLS on email gateways
- DLP configuration on gateways and endpoints
- Generating daily & monthly reports
Network Engineer
Orient Technologies Pvt. Ltd.
09.2012 - 07.2013
- Maintenance of Internet Lease Lines on PAN India level
- Troubleshooting & Monitoring of Tikona Digital Network circuits
- Looking after services provided to Enterprise customers of TDN by clearing there problems like (Link down / CRC errors / Packet Loss /link fluctuation/latency etc.)
- Providing Technical Support and Fault Management for (Leased Line, ILL, Internet access)
- Troubleshoot and Monitor end to end connectivity (Which include Core network (Cisco 7600) Transport Path Metro Ethernet Network (Cisco 3400/RTS/MROTEK/Radio/ CPE End.)
- Remote Access to Cisco Routers and switches for checking end to end Connectivity
- Monitoring and Manage end to end WiMAX connectivity (wireless) through Network Management system
- (SS- provisioning/SS visibility/Base station/ IP Related/ POE fault)
- Check utilization of core network through Multiple router traffic Grapher (MRTG)
- Responsible for Service assurance Includes: - 1
- Maintain SLA 2
- Providing Root Cause Analysis (RCA)
- 3
- Taking High Level of escalations from Customers, Service Account Managers, NOC Heads
- 4
- Co-ordinate with circle Heads to resolve the issues
- To co-ordinate with field engineers on solutions to troubleshoot and repair complex circuits, equipment configuration, optical link losses, hardware faults
- VLAN assigning
- Tagging and Un-tagging
- Configuring and monitoring NB5/PB5 radios, MROTEK and RTS switches
- Monitoring Interface/VLAN configurations on core 7600 routers
- Monitoring VLAN database on POP 3400 switches
- Check utilization of NLD links in case of choking
Network Support Engineer
Mind Pro Technologies Pvt. Ltd.
07.2011 - 09.2012
- Leased Line maintenance/Procurement/Commissioning responsibility
- Co-ordination with field engineers for installation of Network Equipment's, IOS upgradation, new hardware upgrades & Loop Testing
- Co-ordinate with Local service providers for Installation, troubleshooting of Leased Lines, MPLS links
- Using ticketing tools like IBM Tivoli, Avhan Fulcrum for Network Monitoring
- Troubleshooting & maintaining WAN links 24
- 7
- Configure and troubleshooting OSPF routing issues
- Configuration of ACL on Routers
- Technical Support to customers all over India
- Troubleshooting of Hardware & Network modules on routers
- Making Daily Downtime calls Report and Monthly Downtime calls Report
- Raising incident & change request tickets
- Follow up with L2 & L3 technical team
- Configuration of cisco 1841, 1900 series routers
- SSH, TELNET configuration on CE routers
Telecom Consultant
Pyro BKP Pvt. Ltd.
09.2010 - 04.2011
- Loop 2G Project: Mumbai & Mumbai suburbs (Sep'10 - Oct'10)
- EMF survey for Loop 2G
- Tools: EMF meter (Narrow Band)
- Loop 2G & LOS Project: Mumbai & Mumbai suburbs (Nov'10 - Feb'10)
- RF and LOS survey & Report making
- Planning the orientation, height & type of antenna mount
- Making a PPT representation of the entire site
- Tools: GPS , Compass , Camera
- Knowledge Map Info Professional for mapping raw data, and locating distant sites around a City, State
- Vodafone EMF Survey: Mumbai & Mumbai suburbs (Feb'11 - Apr'11)
- EMF Survey and Report making
- Both 2G & 3G
- Co-coordinating with Service provider Team
Education
B.E. - Electrical, Electronics And Communications Engineering
Mumbai University
Maharashtra05-2010
Skills
- Malware analysis
- Incident response
- Application security
- Access control
- Compliance management
- Network security
- Cloud security
- Intrusion detection
- Firewall management
- Ethical hacking
- Data protection
- Penetration testing
Certification
- Cisco Certified Network Associate (CISCO ID: CSCO12220509)
- TCSP Certification: OfficeScan 10.6
- TCSP Certification: InterScan Messaging Security Virtual Appliance (IMSVA) 8.0
- Certified Ethical Hacker V9
- Certified Information Security Manager (232306472)
Timeline
Cyber Security Consultant
Tata Consultancy Services
12.2020 - Current
Onsite Network Security Lead
Tata Consultancy Services
11.2017 - 12.2020
SIEM / SOC Analyst (L2)
Tata Consultancy Services
02.2015 - 11.2017
Security Engineer (L2)
Tata Consultancy Services
02.2015 - 11.2017
Network Security Engineer
HCL Technologies Limited
07.2013 - 01.2015
Network Engineer
Orient Technologies Pvt. Ltd.
09.2012 - 07.2013
Network Support Engineer
Mind Pro Technologies Pvt. Ltd.
07.2011 - 09.2012
Telecom Consultant
Pyro BKP Pvt. Ltd.
09.2010 - 04.2011
B.E. - Electrical, Electronics And Communications Engineering
Mumbai University
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