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Network Test Engineer
  • Kraków County
Network Test Engineer
Kraków, Kraków County, Lesser Poland Voivodeship, Polska
Zensar Technologies
27. 2. 2025
Informacje o stanowisku

What You’ll Do

  • Validate technology design, software releases, and new technology solutions for projects/accounts to accelerate customer outcomes.
  • Build customer simulations in test labs to resolve/validate sophisticated problems and compatibility issues.
  • Understand product-level architecture and apply Networking Design standard methodologies in Validation Scenarios.
  • Write effective test cases and/or scripts based on customer test environment and requirements.
  • Raise defects, liaise with Dev engineers, and drive issue resolution.
  • Review test plans and design changes related to the area of responsibility.
  • Apply field concepts to system tests and have a working knowledge of customer deployments to map it to the feature.
  • Tackle complex, multi-functional issues that cross many technologies in Core and Edge networking.
  • Create traffic profiles with 3rd party test tools such as Ixia or Spirent.
  • Create and deliver customer collateral, portals, documentation, and knowledge transfer.
  • Align with and support company policies and processes; utilize relevant tools to efficiently execute the role and support Professional Services’ strategies and goals.
  • Play the role of an individual contributor.

Decision Making / Impact

  • Decisions impact the quality, efficiency, and effectiveness of own team and other teams whose work activities are closely related, including multi-functional teams.
  • Ability to understand and communicate project scope and map it to customer business goals and objectives.

Role and Specific Responsibilities

  • Work extensively with customers along with appropriate internal and external partners (e.g., customer account teams, partners) on the validation strategy, deployment, and optimization of services and solutions.
  • Create, review, and approve project work e.g., Detailed Test Plan (DTP), Joint Test Plan on Record (JTPOR), End of Test Report (EOTR), etc.
  • Identify avenues for automation ideation; automate test cases as per requirements and implement automation ideas for delivery perfection and efficiency.
  • Proactively recognize and flag problems; understand the impact and implications of the problem; work with others to resolve problems.
  • Able to learn new tech/products quickly, without the need for formal training, and become a contributing member of the new team in a short amount of time.
  • Mentor junior team members.
  • Take actions that go beyond job requirements to achieve goals/objectives.

Who You Are

Expertise

  • Typically requires a BSc in Computer Science or equivalent plus 8-10 years of relevant work experience. An advanced degree is strongly preferred.
  • Knowledge of software programmability (Python/Ansible/Rest APIs), automation, orchestration, and/or virtualization is desired.
  • Demonstrable experience in the installation, configuration, and troubleshooting of Cisco routers and switches.
  • Expert & Professional level Cisco certifications like CCIE, CCNP are highly desired.
  • Excellent written and verbal communication, interpersonal, and presentation skills. Ability to function in ambiguous circumstances. Possesses customer consulting skills including the ability to establish relationships with customers, engineers, managers level & above.
  • Strong understanding, experience, and expertise in at least one technology area mentioned below.

ENT & Service Provider Technologies

  1. Experience in product lines like ASR1K, ASR900, CRS, ISR1K, ISR4K, ASR9K, NCS500, NCS5500, NCS5700, 8000 series routers, Cat9K, Cat8K, Cat6K series switches.
  2. Deep technical knowledge and understanding of BGP, OSPF, ISIS, IPv4/IPv6, MPLS, Multicast, Traffic engineering, Security, QoS, HSRP, VRRP, VLAN, VTP, STP, RSTP, MSTP, Segment Routing, etc.
  3. Experience on wireless and security products & technologies is highly desired.
  4. Experience with Cisco SDWAN & SDA technologies is preferred.

Data Centre Technologies

  1. Strong Nexus 2K/5K/7K/9K platform knowledge and hands-on experience.
  2. Knowledge and experience in overlay technologies VXLAN, BGP EVPN, OTV, LISP.
  3. Good experience on Cisco ACI technologies and concepts.
  4. Experience in designing data centre solutions from traditional DC standalone Nexus design to VXLAN Fabric based SDN solutions leveraging Single-Site Fabrics, ACI Multi Pod & Multisite Fabric architectures.

Mobility Technologies

  1. Technical expertise in Mobility Technology Domain with demonstrated expertise in one or more of the following areas – 2G, 3G, and 4G LTE Mobile Packet Core networks.
  2. Experience in configuration and troubleshooting in Cisco ASR 5K based GGSN & SGSN.
  3. Knowledge of 5G Evolved Packet Core network integration and testing is desirable.
  4. Working on different interfaces & protocols i.e. Diameter, IP, SIP, S1AP/NAS.
  5. Experience in planning and preparing detailed test plans for Mobility Solutions.
  6. E2E integration and testing of Container EPC (MME, S/P-GW-C, and S/P-GW-U) would be an added advantage.
  7. Sound knowledge of signalling flows and protocols like GTP, DIAMETER, S1AP, NAS, SIGTRAN, CAMEL, BSSGP, and RANAP.

SP-Cloud Technologies

  1. Hands-on experience in SP-Cloud Architectures such as OpenStack, VNF’s, Network Services Orchestrator (NSO), Elastic Services Controller (ESC).
  2. Exposure to Microservices architecture.
  3. Experience in NetConf, Yang Modelling, Tail-f/NCS/NSO.
  • Hands-on experience with traffic generator tools like Spirent and Ixia is mandatory.
  • Ability to troubleshoot, own, and resolve issues and problems during validation.
  • Proven ability to document appropriate technical information to serve as a base for training, technical operations run books, and knowledge objects.
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