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3rd Line Security Engineer

Job Req ID:  54231
Posting Date:  9 Jan 2026
Function:  Service
Unit:  Business
Location: 

25A DLF City Phase-III,, Gurugram, India

Salary:  Competitive

Why this job matters

To manage and administer security technologies for BT and its Global customers.

Provide Level 3 technical support on Security Technologies like Firewalls, Proxies, load balancer, Cloud security. Provide escalation support and liaising with customer representatives or vendors and supporting/directing other support staff where appropriate. On-boarding of new product to operation team and taking contract ownership. Position is based out of Gurgaon‘s Global Security Operational Centre.

What you’ll be doing

Form an integral part of 24*7 rota to provide security in-life support

Work on complex incidents, problems and changes within the Operational environment.

Provide level 3 operational support and own the high priority incident while maintaining the agreed SLA.

Be the technology SME for specialised product as per contract or business need

Be the Contract SME obtaining full infrastructure, tools and process knowledge.

Be the Single point of Contact for design or contract team for any operation query or escalation support

Contribute to new Product launch and technical evaluation for managed security services

Provide escalation support to team members including first and second line of defence.

New customer on-boarding and Acceptance into Service of new product for existing customers.

Root cause analysis and building PIR as and when required

Provide customer technical advisory services in support of new BT Security Service. Working with the customer and account teams in the technical data requirements capture phase.

Provide consultancy and support in Vulnerability management, IOS upgrades and policy management.

Ensure full awareness of the need to safeguard sensitive customer information at all times, so that customers perceive BT to be a trustworthy organisation.

Provide leadership and training to technical support staff including mentoring of 2nd line to improve diagnostic skills and quality of incident management

 

Skills

Mandatory: Hands-on experience in operation and management of security infrastructure.

Handle complex incidents, problems, and changes within the operational environment.

Provide level 3 operational support and take ownership of high-priority incidents, ensuring SLAs are met.

Act as the SME (Subject Matter Expert) for specialized products, as per contract/business needs.

Serve as the single point of contact for any operational queries or escalation support.

Contribute to new product launches and technical evaluations for managed security services.

Implementation and operation support experience on F5 LTM,GTM, ASM,AFM

Zscaler, Prisma Access implementation and support

6+ years of troubleshooting experience with the following products/technologies:

Next-gen Firewalls (Cisco Firepower/FTD, Fortinet Virtual/Appliance)

IPS, Web Application Firewalls

Loadbalancers (F5 LTM/GTM, NetScaler, F5 WAF)

Understanding of Identity and Access management solution like Forescout, Beyond trust, Okta, CyberArk, Cisco ISE

Knowledge of SDWAN will be an added advantage

Ability to provide Tier 3 support and manage complex and escalated tickets

Knowledge of Cyber Security domains will be an added advantage

Stakeholder management and ability to work under pressure

Effective oral and written communication

 

Experience you would be expected to have

Experience of working in a global security operation environment, ticketing-tools like remedy, Service Now and exposure to ITIL processes in context of service operations is a plus

Minimum professional level certification in Cisco CCNP Security, CCIE Security , Palo Alto PCNSA, PCNSE, Prisma Access.

Professional Qualification such as B.E./B.Tech/MCA

Diploma in a relevant field is Acceptable

About us

BT Group was the world’s first telco and our heritage in the sector is unrivalled.  As home to several of the UK’s most recognised and cherished brands – BT, EE, Openreach and Plusnet, we have always played a critical role in creating the future, and we have reached an inflection point in the transformation of our business. 
 
Over the next two years, we will complete the UK’s largest and most successful digital infrastructure project – connecting more than 25 million premises to full fibre broadband.  Together with our heavy investment in 5G, we play a central role in revolutionising how people connect with each other. 
 
While we are through the most capital-intensive phase of our fibre investment, meaning we can reward our shareholders for their commitment and patience, we are absolutely focused on how we organise ourselves in the best way to serve our customers in the years to come.  This includes radical simplification of systems, structures, and processes on a huge scale. Together with our application of AI and technology, we are on a path to creating the UK’s best telco, reimagining the customer experience and relationship with one of this country’s biggest infrastructure companies.  
 
Change on the scale we will all experience in the coming years is unprecedented.  BT Group is committed to being the driving force behind improving connectivity for millions and there has never been a more exciting time to join a company and leadership team with the skills, experience, creativity, and passion to take this company into a new era.

A FEW POINTS TO NOTE:

Although these roles are listed as full-time, if you’re a job share partnership, work reduced hours, or any other way of working flexibly, please still get in touch.

We will also offer reasonable adjustments for the selection process if required, so please do not hesitate to inform us.

DON'T MEET EVERY SINGLE REQUIREMENT?

Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We're committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you're excited about this role but your past experience doesn't align perfectly with every requirement on the Job Description, please apply anyway - you may just be the right candidate for this or other roles in our wider team.

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