SIEM Application Engineer

The new Network SIEM is essential to BT’s network security, meeting TSA requirements and improving our CAF level. Your role as a SIEM Application Engineer in Security Engineering is to support the development, implementation, operation and support of BT's Strategic SIEM development. We are seeking a skilled SIEM Application Engineer with expertise in Elasticsearch to join our dynamic team. As a SIEM engineer, you will play a critical role in designing, developing, and maintaining our security information and event management (SIEM) system. Your focus will be on leveraging Elasticsearch and related technologies to enhance threat detection, incident response, and overall security posture. This role is hybrid (3 days in office) and can be based in one of the following offices: Birmingham, Manchester, Ipswich (Ipswich only applicable to existing BT employees).

What you’ll be doing:

• SIEM Solution Development: Collaborate with security analysts and architects to design and implement SIEM solutions using Elasticsearch. Optimize SIEM rules, alerts, and dashboards for efficient threat detection.
• Query Optimization and Performance Tuning: Write efficient Elasticsearch queries to retrieve relevant security events. Monitor and manage the performance of the SIEM infrastructure.
• Security Engineering: Contribute to security engineering projects, transitions, and transformations. Work closely with security operations and associated security incident response systems.
• Data Ingestion and Enrichment: Configure Elasticsearch pipelines for data ingestion from various sources, primarily from Kafka. Enhance data enrichment by integrating threat intelligence feeds and contextual information.
• Knowledge-sharing: In team discussions, defining and improving working procedures, organisation of team events. Help colleagues in the team to grow by mentoring when required.

Skills Required for the Role:

• Security and Compliance with Elastic Security: Set up access controls, authentication, and encryption using Elastic Security features. Ensure compliance with data protection regulations.
• Detection Rule Development: Ability to create, test, and optimise detection rules to identify suspicious activities and potential threats based on the MITRE ATT&CK Framework.
• Performance Tuning with Elasticsearch and Logstash: Fine-tune query performance using Elasticsearch indices and mappings. Monitor Logstash pipelines and optimize resource utilization.
• Kibana Visualization and Monitoring: Leverage Kibana for data visualization, dashboards, and real-time monitoring.
• ETL Processes with Logstash: Design, develop, and maintain data pipelines using Logstash, part of the Elastic Stack.
• Beats for Data Collection: Proficiency in configuring and managing agents, including setting up agent policies for various operating systems.
• Database Architecture and Scaling with Elasticsearch: Optimize data storage and retrieval mechanisms within Elasticsearch clusters.
• End-to-End Solution Delivery: Expertise in taking ownership of a requirement from start to finish, including gathering detailed requirements, designing, and implementing robust, innovative solutions.

Experience Required for the Role:

• Mandatory: Bachelor’s/Master’s degree in Computer Science, Information Systems, Engineering, or other related fields.
• 5+ years of engineering experience in delivering cybersecurity solutions.
• Experience in key cyber technologies such as SIEM technologies (Elastic preferred), vulnerability management, access management and other commonly used Enterprise security controls.

From January 2025, equal family leave: receive 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate. It’s for all parents, no matter how your family is made up. Enhanced women’s health support: including help with menopause symptoms, cancer screenings, period care and more. 25 days annual leave (not including bank holidays), increasing with service. 24/7 private virtual GP appointments for UK colleagues. 2 weeks carer’s leave. World-class training and development opportunities. Option to join BT Shares Saving schemes.

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.

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.