Dany Z.

Sysops Engineer

435 dollar
Freelancer
11 years
Bucharest, ROMANIA

My experience

More

Airbus Defence and Space - IntelligenceApril 2018 - Present

- Support SIE project as subject matter expert for network related technologies.
- Delivered technical solution, documentation and scripts for network zero touch provisioning. Scripts have been developed using bash and TCL. Later they have been integrated in the global automation tool (Hardware Initialization Tool) using Powershell.
- Took over the automatic network elements configuration generation process.
- Redesigned the process in order to have more control over the automation process. Developed scripts in python using jinja2 templates. Task automation has been done using Ansible.
- Tested and improved the automated process for network elements hardware initialization using a reference platform inside the testing laboratory.
- Provided training on using the automated tool for other engineers.
More

BitdefenderNovember 2015 - March 2018

- Work closely with the software architect in researching and developing networking related technologies
- Develop test plans and verify the implementations of software modules and networking protocols, standards compliance, performance benchmarks and scaling to meet the product requirements
- Perform scripting and write test plans and test cases that would validate the products under test
- Develop and modify automated tests to improve QA efficiency and problem reproducibility as required.
- Assist with security advisement on new projects, applications, technologies being considered and implemented

Research areas including but not limited to: Haka security, Suricata IDS, Tor deanonymization

Projects:
- create a virtual Tor network for research purposes and automate process of extracting specific packet captures and interpreting tor cells, circuits and data streams  in a nice way
- create a virtualized environment for real-life malware infection cases and automate processes like spawning, deleting VMs, managing snapshots, software installation inside guest OS, infection of victim machines, log collection, packet captures etc
- create a containerized solution for honeypots using GRE tunnels
More

LenovoJanuary 2015 - November 2015

- Test Lenovo NOS for networking hardware ensuring it runs according to functional specifications and client requirements; testing different L2-L7 features
- Discover and report defects due to incorrect functioning of networking features and protocols
- Perform research and write strategy documents following feature specification and design document
- Design and execute test cases to cover the functionality and interoperability of a specific feature
- Perform unit, system integration and regression testing according to the tasks defined by the project planning
- Perform root cause isolation, troubleshooting, edit bug report, bug fix verification
- Work closely with developers in developing new products and innovative test scenarios
- Work closely with support and sustaining team to resolve critical issues

Technologies:
L3 features like BGP(RFC 4271), OSPF(RFC 1247), RIP(RFC 2453), ACLs, Dynamic PBR(IBM proprietary), VRRP(RFC 3768), Local Proxy ARP
L2 features like xSTP(IEEE 802.1D, 802.1w, 802.1s), LACP(IEEE 802.3ad), Private VLAN(RFC 5517)
Multicast features like IGMPv2(RFC 2236), IGMPv3(RFC 3376)
Platform features like management ACLs and SNMP ACLs
Openflow v1.3.1
More

IBMJanuary 2013 - December 2014

- Test different IBM NOS features for networking hardware ensuring they run according to functional specifications and client requirements
- Discover and report defects and bugs due to incorrect functioning of networking features and protocols
- Perform research and write strategy documents following feature specification and design document
- Design and execute test cases to cover the functionality and interoperability of a specific feature
- Perform unit, system integration and regression testing according to the tasks defined by the project planning
- Perform root cause isolation, troubleshooting, edit bug report, bug fix verification
- Work closely with developers in developing new products and innovative test scenarios
- Work closely with support and sustaining team to resolve critical issues

Technologies:
L3 features like BGP(RFC 4271), OSPF(RFC 1247), RIP(RFC 2453), ACLs, Dynamic PBR(IBM proprietary), VRRP(RFC 3768), Local Proxy ARP
L2 features like xSTP(IEEE 802.1D, 802.1w, 802.1s), LACP(IEEE 802.3ad), Private VLAN(RFC 5517)
Multicast features like IGMPv2(RFC 2236), IGMPv3(RFC 3376)
Platform features like management ACLs and SNMP ACLs
Openflow v1.3.1

Products:
IBM Flex System SI4093, EN4093R, CN4093, EN2092, EN4091
IBM RackSwitch G8316, G8264, G8124E, G8052, G8000, G8264CS
http://www-03.ibm.com/systems/networking/switches/
More

Huawei TechnologiesJuly 2011 - December 2012

TAC OSS Engineer
Jul 2012 – Dec 2012

- Provide customer service and technical support for Huawei Wireless OSS Product Line customers
- Troubleshoot hardware and software issues and identify network/applications issues
- Provide detailed information on how to set up, configure, and upgrade Wireless OSS Products
- Use various department tools, technical knowledge, lab equipment, and on-line resources for customer issue resolution
- Use trouble ticket system for tracking customer interactions and issue resolution

Technologies:
Solaris operation and administration
Products:
iManager M2000
iManager PRS
Solaris M4000 and M5000
http://www.huawei.com/en/products/oss/mbb-om-product/index.htm
TAC Access Network Engineer
Jul 2011 – Jul 2012

- Provide customer service and technical support for Huawei Access Network Product Line customers
- Troubleshoot complex problems of DSLAM, OLT, ONT, MxU, NMS, MSAN and other access network Products
- Provide detailed information on how to set up, configure, and upgrade access network products
- Solve various technical issues by remote operation
- Work together with R&D in order to fix software issues
- Provide technical reports and procedures to customers
- Propose, document and track new feature requests from customers. Discuss the implementation together with the development team in R&D
- Use various department tools, technical knowledge, lab equipment, and on-line resources for customer issue resolution
- Upgrade various Huawei fixed access network equipments
- Use trouble ticket system for tracking customer interactions and issue resolution within SLA
- Follow procedures about handling severe network incidents
- Recruit, coach and train new employees

Technologies:
DSL, GPON, VoIP, Multicast, DHCP, PPPoE, routing and switching protocols, NMS systems and protocols, OSS interfaces (XML, TL1, SNMP), Solaris servers.
Products:
MA5600T UA5000 MA5616 MA5652G N2000 U2000 N2510
http://www.huawei.com/en/products/fixed-access/index.htm
More

ERICSSON TELECOMMUNICATIONSJuly 2010 - June 2011

- Supervise and ensure the functioning within normal parameters of GSM/UMTS radio equipments of Mobistar Belgium
- Ensure technical and logistic support for the field team
- Create and handle Trouble Tickets for technial issues on the radio access network

Technologies:
GSM, UMTS, ADSL, SHDSL, SDH

Tools:
Huawei M2000 for RNC/Node-B
Nortel OMC-R for BSC/BTS
Ericsson Minilink-Craft for Traffic Node

My stack

Analysis methods and tools

DSL

Protocols

PPPoE, VRRP, GRE, PPP, PIM, Multicast, TCP, UDP, HSRP, MSTP, IS-IS, IPsec, GSM, IPv6, IGMP, ICMP, HDLC, BGP, UMTS, MPLS, ARP, VPLS, OSPF, SNMP, RIP

IT Infrastructure

Linux, NAT, VMware vSphere, Ethernet, ADSL, Ansible, IPTables, Cisco IOS, NMS, Sun Solaris, Juniper, JunOS, CCNA, VLAN, Firewalls

Languages

Bash, PowerShell, Python, XML, C/C++

Others

RFC, Documentation, Troubleshooting, Snort, Wireshark

Software testing

Test Planning, Test Cases, Regression testing, Penetration testing

Other

LACP, Hacking, Romanian, OSS (Operating Support Systems), Automatic Testing, Bug Tracking System, Software Installation, Dynamic Host Control protocol, Bash Shell, OSPF (Open Shortest Path First), Tor, Systems Integration, French, Project Planning

My education and trainings

Master, Electronics,Telecommunications and Information Technology - University of Politechnics Bucharest2010 - 2012

Bachelors Degree, Telecommunications and Information Technology - University of Politechnics Bucharest2006 - 2010