Freelancer profile translated to English.
Back to original languageAbout Nicolas
Senior OPS Engineer with over 10 years of experience, I help companies stabilize, secure, and automate their critical production infrastructures.
Specializing in high-availability environments subject to strict compliance constraints (finance, payment processing, PCI-DSS), I undertake complex missions to guarantee the robustness and performance of your services.
My areas of expertise:
🔹 Automation & Industrialization: Design of custom scripts (Python, Bash, REST API) to automate your deployments, certificate management, and recurring operational tasks.
🔹 Operational Readiness (MCO): N2/N3 Support, diagnosis and resolution of complex incidents, implementation of relevant monitoring and alerting (Grafana, Prometheus, ELK).
🔹 Database Management & Optimization: Expertise in SQL databases (PostgreSQL, Oracle), including query optimization (tuning), cluster management, and ensuring data integrity in high-volume transactional environments.
🔹 Reliability & SRE: Improving system robustness, strengthening CI/CD pipelines, and applying SRE best practices.
🔹 Security & Compliance: Expertise in certificate lifecycle management and application of security standards (PCI-DSS).
Available for consulting, architecture, team reinforcement, or advanced support missions.
Contact me to discuss your projects and how I can help you achieve your goals!
French
Native or bilingual
English
Native or bilingual
German
Basic
Chinese
Basic
Can work on-site
La Garenne-Colombes (up to 20km)
Experience
- WorldlineOPS Expert - Application Support & Scripting (N3)BANKING AND INSURANCEDecember 2019 - May 2025 (5 years and 6 months)TélétravailLong-term assignment as an OPS specialist on the AXIS payment processing platform, handling billions of euros in card transactions (PCI-DSS standard). I acted as a cross-functional investigator and key technical point of contact for the Dev, Infra, and Project teams.Key achievements:• Critical Incident & Crisis Management: Diagnosis and resolution of major production issues. Notably, I led the resolution of a parsing error that was blocking millions of transactions, ensuring data correction and flux re-injection with no financial impact for the client.• Automation & Industrialization: Design of scripts for the complete automation of the certificate lifecycle. Standardization of operational processes to industrialize and improve platform reliability.• Reliability & Process Improvement: Redesign of pre-production environments, improvement of CI/CD pipelines, and strengthening of deployment mechanism reliability (release/rollback).• Collaboration & Knowledge Transfer: Training and support for N2 support teams to increase their autonomy and strengthen operational knowledge.
- AppStud SAS (pour le compte de Roland-Garros)OPS Expert / Incident Management Specialist (Freelance)ENTERTAINMENT AND LEISUREJune 2022 - September 2022 (3 months)Toulouse, FranceSupport mission for AppStud's production teams during a three-week period coinciding with the Roland-Garros event, to ensure the stability of critical services for their client.Key achievements:• Critical Production Incident Management: Log analysis, incident resolution, and direct communication with the client's IT and affected users to ensure rapid and efficient resolution.• Post-Mortem Analysis & Continuous Improvement: Writing root cause analysis (RCA) reports and proposing long-term improvements to correct identified system weaknesses.• Deployment of Fixes: Design, testing, and deployment of necessary fixes in collaboration with development teams.
- AppStud SAS (pour le compte de Roland-Garros)OPS Expert / Critical Incident Manager (Freelance)ENTERTAINMENT AND LEISUREMay 2022 - June 2022 (1 month)Toulouse, FranceSupport mission for AppStud's production teams during the high-criticality period corresponding to the annual Roland-Garros event. My role was to ensure service stability by intervening on priority incidents.Key achievements:• Real-time Incident Management: Handling the resolution of priority anomalies in production, from log analysis (logstash, kibana) to direct communication with the client and users.• Complete Correction Cycle: Design, testing, and urgent deployment of corrective patches to ensure service continuity.• Post-Incident Analysis: Writing root cause analysis (RCA) reports and formulating recommendations for long-term system improvements.
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Education
- PCI-DSS-2021Certifié en 2021.
- Computer Science ExpertEpitech2015Cursus équivalent ingénieur en informatique.
Certifications
- ITILITIL2018