Security Operations Analyst (SIEM Operations and Threat Detection)

Company Description

Talan – Positive Innovation

Talan is an international consulting group specializing in innovation and business transformation through technology. With over 7,200 consultants in 21 countries and a turnover of €850M, we are committed to delivering impactful, future-ready solutions.

Talan at a Glance

Headquartered in Paris and operating globally, Talan combines technology, innovation, and empowerment to deliver measurable results for our clients. Over the past 22 years, we’ve built a strong presence in the IT and consulting landscape, and we’re on track to reach €1 billion in revenue this year.

Our Core Areas of Expertise

• Data & Technologies: We design and implement large-scale, end-to-end architecture and data solutions, including data integration, data science, visualization, Big Data, AI, and Generative AI.

• Cloud & Application Services: We integrate leading platforms such as SAP, Salesforce, Oracle, Microsoft, AWS, and IBM Maximo, helping clients transition to the cloud and improve operational efficiency.

• Management & Innovation Consulting: We lead business and digital transformation initiatives through project and change management best practices (PM, PMO, Agile, Scrum, Product Ownership), and support domains such as Supply Chain, Cybersecurity, and ESG/Low-Carbon strategies.

We work with major global clients across diverse sectors, including Transport & Logistics, Financial Services, Energy & Utilities, Retail, and Media & Telecommunications.

Job Description

We are looking to join a Senior consultant within the Cyber Security Operations Center (CSOC), a globally distributed team of cybersecurity professionals responsible for protecting complex and diverse technology environments.

The role is primarily focused on enhancing threat detection and cybersecurity operations capabilities through activities such as security content management, quality assurance and validation of detection mechanisms, detection use case lifecycle management, onboarding and integration of new security data sources, reporting, and process optimization.

This is an excellent opportunity for professionals interested in working within a large-scale international cybersecurity environment, where they will play a key role in the continuous improvement of security monitoring and threat detection services across multiple customer landscapes. The position combines elements of Security Operations, Threat Detection Engineering, SIEM optimization, cyber risk management, and operational excellence, offering exposure to a wide variety of cybersecurity technologies and challenges.

Main Responsibilities:

• Contribute to the development, implementation, validation, tuning, and maintenance of security monitoring, analytics, and detection capabilities across SIEM, EDR, cloud, and other cybersecurity platforms.

• Support the operation, maintenance, optimization, and continuous improvement of security monitoring and threat detection services.

• Participate in the onboarding, integration, testing, and validation of security data sources, telemetry feeds, and monitoring capabilities.

• Contribute to security content management activities, including use case lifecycle management, rule reviews, testing, tuning, and content quality assurance.

• Collaborate with cyber threat intelligence, incident response, and cybersecurity operations teams to translate operational and threat intelligence requirements into effective detection and monitoring capabilities.

• Under guidance, participate in cybersecurity architecture reviews of new or existing solutions and provide recommendations to enhance security monitoring and detection effectiveness.

• Contribute to the preparation and maintenance of cybersecurity operations metrics, dashboards, KPIs, and service performance reports.

• Review, validate, and assess the effectiveness of detections, monitoring configurations, operational processes, and service deliverables, identifying opportunities for improvement.

• Gather and analyze operational feedback to identify opportunities for tuning, optimization, reduction of false positives, and improvement of overall detection quality.

• Contribute to quality assurance activities, including process reviews, control validation, service quality assessments, and implementation of corrective actions.

• Support the development, review, and maintenance of CSOC procedures, standards, documentation, knowledge base articles, and operational guidance materials.

• Prepare and present technical reports, summaries, findings, and recommendations to internal and external stakeholders.

Qualifications

On-Call Availability (On-Call Shift System)

• Mandatory 24/7 On-Call Rotation: You will be required to participate in a rotating on-call shift schedule from Monday to Sunday.

• What this means: This does not mean you will be actively working 24/7 or during late-night shifts. Instead, you will be on standby outside of standard working hours, meaning you must be reachable and available to log in and resolve critical system incidents only if they arise.

• Frequency: The approximate rotation frequency is one full week (7 consecutive days) every X months, depending on the number of team members

Must have:

• +5 years of relevant experience in information technology field, including triage of alerts and supporting security incidents

• Proven experience on administering a SIEM platform, preferably either Splunk or Microsoft Sentinel SIEM

• Proven experience with the usual toolbox available in a SOC (e.g., SIEMs, EDRs) and being able to autonomously perform technical analysis of security threats and collaborate with Incident Response team

• Deep knowledge of Microsoft Security Tools (e.g. M365, Cloud App Security, Azure, Defender for Endpoints, Azure Security, Azure Sentinel and XDR)

• Deep Knowledge of Cloud technologies (e.g. Azure, AWS and GCP)

• Deep knowledge of SIEM tools like Splunk, QRadar, ArcSight, MS Sentinel, ELK Stac

• Knowledge of at least one EDR solution (MS Defender for Endpoint, CrowdStrike)

• Knowledge of email security, network monitoring, and incident response

• Knowledge of Linux/Mac/Windows

• C1 English proficiency

Nice to have:

• Experience in building SIEM architectures from initial design to implementation, including designing data ingestion pipelines for diverse log sources across cloud and on-prem environments

• Proven knowledge of monitoring AWS environment (Iaas, Saas, Paas)

• Knowledge of at least one general-purpose or shell scripting language (e.g. Ruby, Bash, PowerShell, Python, etc.)

Desirable certifications:

• MCSE, CCNA, Microsoft Azure (e.g., SC-200), GCIH, CEH, GCFA or any GIAC/similar certification

Required Soft Skills:

• Excellent communication skills

• Customer-facing experience and oral communication skills

• Ability to write documentation & reports

• Creativity/ ability to find innovative solutions

• Willingness to learn on the job

• Conflict management & cooperation

Additional Information

What do we offer you?

• Remote Position

• Freelance, full-time contract.

• Training and career development.

• Possibility to be part of a multicultural team and work on international projects.

If you are passionate about data, development & tech, we want to meet you!

Talan Spain’s commitment to non-discrimination based on gender, race, ideology, or any other reason, in accordance with the company’s "Equality Plan" and the current regulations on gender equality between women and men (Royal Decree-Law 6/2019).