Hassen El Golli

Senior DevSecOps | SRE | Cybersecurity Analyst

Salary / Daily rate

Toulouse, France

Mobility: Montpellier

Freelance, open to permanent contract

Can come onsite

Skills

CybersecuritySite reliability engineeringDevOpsLinuxAnsibleGitHubTest Driven DevelopmentEvent Driven ArchitectureScrapingPythonDigitalOceanPostgreSQLRedisGitLabJenkinsRESTful APIsGrafanaSplunkMicroservicesOVHcloudBig DataMongoDBPrometheusGoogle Cloud PlatformRabbitMQC++TerraformDockerHerokuSwagger/OpenAPISeleniumCElasticsearchSnortKubernetes

Languages

ArabicEnglishFrench

About me

Intro

CyberSecurity & DevOps specialist with 10+ years building and protecting systems. Experienced in threat detection, incident response, SIEM, vulnerability management, and cloud/DevSecOps automation. Hands-on, curious, and practical, I help organizations strengthen security, automate workflows, and improve system resilience.

Links

Work experience

Cybersecurity Analyst

client under NDAFreelance

Apr 2025 - May 2025

2 months

Remote

• Installed, configured, and demonstrated several open-source tools to implement a SOC, EDR, and SIEM. • Provided recommendations for a new secure and resilient cloud architecture tailored to identified threats. • Conducted attack simulations to assess the detection, alerting, and response capabilities. (Grafana. Graylog, Prometheus, Loki, Wazuh, Splunk, ELK, Velociraptor, OpenEDR, Sysmon, Suricata, Snort, TheHive, MISP, Zeek, OpenCTI, Security Onion)

DevSecOps / SRE / Cloud Engineer

WheereFreelance

Feb 2024 - Dec 2024

11 months

Remote

• Audited the OVH cloud infrastructure, identified security and performance issues within multiple stacks of Docker containers, and proposed a more robust and stable architecture. • Designed a scalable, Kubernetes-ready architecture to enable future migration without vendor lock-in. • Developed Ansible and Terraform scripts to automate environment provisioning and service configuration. • Migrated to GitLab and implemented CI/CD pipelines to automate build, testing, and deployment across various repositories, introducing a GitLab Flow methodology. • Integrated security into CI/CD pipelines by adding SAST, SCA, and DAST scans for code, dependencies, and Docker images — aligned with the MITRE ATT&CK framework. • Deployed a monitoring and logging infrastructure (SOC, EDR, SIEM) to detect incidents, prevent attacks, and monitor application stability. • Defined and implemented a secure environment for development teams, including IAM, VPN, and Vault-based secret management. • Supported developers through clear documentation, training sessions, and hands-on workshops to ensure successful adoption of new tools and environments. (Docker, GitLab, Ansible, Terraform, K8S, Helm, OVH, Grafana, Graylog, Loki, Prometheus, Telegraf, ELK, HashiCorp Vault, Wazuh, Suricata, Snort, Fail2ban, SonarQube)

DevSecOps / SRE / Cloud Engineer

BNP ParibasFreelance

Feb 2020 - May 2023

3 years 4 months

93100 Montreuil, France

• Guided and supported the development team in technical decision-making, bug resolution, code reviews, and deployment of their work across development, qualification, and production environments. • Trained developers on DevOps methodologies and best practices. • Participated in the full lifecycle design and implementation of multiple APIs and applications. • Built and maintained development, qualification, and production environments for nationwide projects. • Designed and maintained CI/CD pipelines (Build/Test/Deploy) to ensure continuous integration and delivery. • Implemented BNP Paribas security policies within CI/CD pipelines and across environments. • Monitored production APIs and applications, conducted security audits, load testing, and reported KPIs. • Developed an API for Security Firewall Automation (SFWA) to streamline firewall management and improve automation. • Organized DevOps workshops to upskill developers and promote tools adoption. (Jira/Confluence, illumio, Python, Flask, Celery, PSQL, Redis, Apache, Gitlab, Jenkins, Ansible, Jfrog, Artifactory, Xray, RHEL, SonarQube, Splunk, Docker, Kubernetes, Kibana, ELK, RobotFramework)

System Administrator / DevOps / SecOps / SRE / Cloud Engineer(

nam.RFreelance

Jul 2017 - Oct 2019

2 years 4 months

Remote

• Audited the existing cloud infrastructure to identify design, performance, stability, and security issues. • Designed, implemented, and maintained a new private cloud infrastructure tailored to the needs of developer and data science teams. • Optimized PostgreSQL databases to improve performance and query efficiency. • Built, implemented, and maintained CI/CD pipelines for continuous integration, testing, and deployment (Build/Test/Deploy). • Established security policies and standards across development and production environments. • Conducted DevOps and Cybersecurity workshops for developer and data science teams to promote secure and efficient practices. • Monitored and secured the entire infrastructure to ensure availability, reliability, and compliance. • Detected and analyzed multiple intrusion attempts, performing incident investigation and remediation. • Performed code audits to identify and mitigate potential vulnerabilities early in the development cycle. • Provided 24/7 on-call support to maintain infrastructure health and operational continuity. (BigData, Debian, Dataiku, Postgresql, Docker, LXC, Gitlab, Ansible, Grafana, Graylog, ELK, Nagios, HAProxy, InfluxDB, Python, Snort, Hadoop, GCP, AWS)

System Developer

Lamp Post GroupFreelance

Jul 2015 - Dec 2016

1 year 6 months

Remote

• Designed and implemented the project architecture in collaboration with an API developer. • Developed various binary programs to meet API requirements. • Implemented a transparent proxy for router users to optimize network traffic. • Optimized system binaries to minimize resource usage and stay within hardware constraints. • Ported select x86/x64 binaries to MIPS architecture for compatibility. • Created a toolchain enabling clients to customize and compile firmware independently, without requiring technical expertise. (openwrt, mips, C/C++, shell, squid, libwebsocket, libcurl, openssl)

Cyber Security Analyst

Independent

May 2015 - Jul 2015

3 months

Freelance

- Forensic/Analysis of compromised servers after an attack. - VPS systems administration. (ubuntu, lamp, rootkit, malware, exploit, nagios, fail2ban, logwatch, postfix, backup scripts)

DevOps

Rancher Labs

Mar 2015 - Mar 2015

1 month

Freelance

Running an Apache Mesos and Marathon cluster with RancherOS and docker. http://rancher.com/running-a-mesos-cluster-on-rancheros/

Python Developer

Streamlive.to

Jan 2015 - Mar 2015

3 months

Freelance

Developing a python XBMC plugin with login, videos and live tv. (python, libcurl, json, rtmp, beautifulsoup)

Developer / Sys Admin

MinikaneFreelance

Jan 2015 - Feb 2015

2 months

Remote

• Fullstack Web Shop development • VPS installation and administration (debian, nginx, django, postgre, git, nagios, ssl)

R&D Engineer

Vianeos

Feb 2012 - Dec 2014

2 years 11 months

Paris, France

• R&D on embedded system for TV set-up box (stlinux, mips, c/c++, dvb/ott/iptv) • SmartTV application development (javascript, iptv) • Custom Android ROM and application development (arm, java, c++, python) • System and network administration (ubuntu, fedora, proxmox, AWS)

Teaching Assistant – Network / CISCO Module

NSA-LAB (EPITECH)

Jan 2011 - Jan 2012

1 year 1 month

Paris, France

• Prepared and organized course materials, practical labs (TD), and exams for the Network/CISCO curriculum. • Conducted hands-on experiments with networking and system hardware, including routers, switches, and servers, to support student learning and demonstrate real-world configurations.

Developer

LabFree (EPITECH)

Jan 2010 - Jan 2011

1 year 1 month

Paris, France

Developed and maintained jRuby modules for a video-conferencing platform. (java, ruby, red5, rtmp)


Education

EPITECH - European Institute of Technology

2008 - 2012

5 years

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