Operational Security Expert

Lognext; Madrid; Sur place; EUR 70 000 - 100 000; Plein temps

Avantages offerts par ce poste

Technical training

Flexible working hours

Team-building and volunteering events

Résumé du poste

Lognext is seeking an Operational Security Expert to join our team, collaborating with a leading multinational financial sector client. You will monitor and tune Akamai DDoS protections, review DNS changes, and advise on rate-limiting and secure design.

This is a hands-on role requiring strong network security skills and cross-functional teamwork. Ideal candidates will have solid TCP/IP knowledge (CCNA/CCVP), advanced DNS security experience, Akamai proficiency, and English at B2+.

Qualifications

• Proven experience in AntiDDoS protection and internet-facing infrastructure security.
• Strong TCP/IP fundamentals aligned to CCNA/CCVP level.
• Advanced DNS security including zone management and propagation.

Responsabilités

• Monitor and fine-tune Akamai DDoS protection policies, investigate abnormal traffic patterns and recommend mitigation measures.
• Plan, test, and document migrations of applications to Akamai zones.
• Review DNS change requests affecting DDoS protection and ensure proper propagation in collaboration with DNS teams.
• Provide guidance on configuring security and rate-limiting policies for stronger AntiDDoS defenses.
• Analyze AntiDDoS security logs and generate operational and audit reports.
• Offer Level 2 troubleshooting for application-layer incidents related to DDoS mitigation.
• Advise project and audit teams on DDoS risks and impacts.
• Assist onboarding of new applications into AntiDDoS protection and support Security by Design initiatives.

Connaissances

AntiDDoS

TCP/IP fundamentals

DNS security

Traffic monitoring

Akamai DDoS

Rate limiting

L2 troubleshooting

Security by Design

English (B2)

Formation

CCNA/CCVP

Outils

Akamai DDoS Protection

DNS management tools

Description du poste

At Lognext, we have been supporting companies such as Verisure, BNP Paribas and AXA for 20 years, helping them solve complex technological challenges through high-performing expert talent that turns technology into business results.

We are looking for a talented Operational Security Expert to join our team, working with a leading multinational company in the financial sector.

What are we looking for?

• An operational security professional with strong technical knowledge of AntiDDoS protection and the security of internet-facing infrastructure and applications.
• Solid, proven expertise in TCP/IP networking fundamentals and protocols (CCNA/CCVP level).
• Advanced knowledge of DNS security, including zone management, configuration and propagation.
• Strong experience in traffic monitoring, log analysis and abnormal traffic pattern detection.
• Technical knowledge of AntiDDoS solutions, particularly Akamai, including mitigation policy configuration and rate limiting.
• Strong analytical and troubleshooting skills, autonomy and the ability to collaborate effectively with multidisciplinary technical teams.
• Good command of English (minimum B2).

What will your main responsibilities be?

• Monitor and fine-tune Akamai DDoS protection policies, investigate abnormal traffic patterns and recommend appropriate mitigation measures.
• Contribute to the planning, testing and technical documentation of application migrations to Akamai zones.
• Review DNS change requests affecting DDoS protection, ensuring zone integrity and proper propagation in collaboration with DNS teams.
• Provide technical guidance on configuring security and rate-limiting policies to strengthen AntiDDoS defenses.
• Analyze AntiDDoS security logs and produce operational, activity and audit reports.
• Provide Level 2 (L2) troubleshooting support for application-layer incidents related to DDoS mitigation.
• Act as a technical advisor to project, architecture and audit teams regarding DDoS-related risks and impacts.
• Support the onboarding of new applications into AntiDDoS protection services and contribute to Security by Design initiatives and continuous security improvement.
• Strong knowledge of TCP/IP protocols and networking fundamentals (CCNA/CCVP level).
• Advanced DNS security and configuration expertise.
• Monitoring, traffic analysis and security troubleshooting skills.
• Understanding of AntiDDoS protection mechanisms and mitigation strategies.
• Good command of English (minimum B2).
• Experience with Akamai DDoS protection solutions.
• Experience configuring rate-limiting and application security policies.
• Knowledge of security reporting, audits and Security by Design practices.

What do we offer?

• Technical training, certifications and language learning programs
• Flexible working hours
• Team-building and volunteering events

Join a team of Nexters who solve real technical challenges through high-impact projects for leading international clients.

At Lognext, we are committed to equality between women and men, as demonstrated by our registered and published Equality Plan. We are a team of nearly 400 Nexters from more than 25 different nationalities, and we believe that multiculturalism is a valuable source of experiences, perspectives and knowledge that brings added value to our projects. We embrace diversity and work every day to create environments where everyone is treated with respect and dignity, regardless of their background. We do not discriminate based on race, religion or beliefs, ethnicity, disability, age, nationality, marital status, sexual orientation or gender.