Freelancer profile translated to English.
Back to original languageAbout Emeric
Are your slow queries slowing down checkout and customer retention?
I reduce backend latency â„100 ms (i.e. -1% churn, +immediate revenue).
15+ years of experience (EDF, SFR, Monoprix, Payplug, Airbus)
I help e-commerce, SaaS and fintech companies transform their databases into growth levers, acquire more customers, retain existing ones and secure their data:
â
Monoprix: -728 ms checkout latency, +47% conversion, -18% GCP costs
â
Medbox: 40% faster queries, 99.99% uptime, -35% cloud costs
5-day audit â Prioritized action plan â 30-day support until results.
Services:
đ PostgreSQL/MySQL Audit â 5 days â âŹ5,500: 10 priority actions + estimated ROI.
đ Checkout Speed Sprint â 30 days â âŹ12,000: target p95 < 400 ms, -100 ms backend.
âïž Rescue 72h Incident â âŹ3,600: critical troubleshooting (crash, contention, replication).
See the experiences section for details.
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Complementary skills:
đšâđ» Mastery of SALTSTACK, Ansible, containers, Git and DevSecOps practices.
đŁïž Fluent in English; ready for international collaborations.
đ Contact me for a FREE CONSULTATION
đ Take advantage of a -30% audit with the code AUDIT30 in your message (offer valid only for your first audit).
English
Native or bilingual
French
Native or bilingual
Spanish
Conversational
Remote only
Primarily works remotely
Experience
- OYEZ
On Malt
PostgreSQL Expert at MonoprixJune 2020 - July 2020 (1 month)Context: Fast-growing health platform, undersized MySQL database, unstable API response times.Action: Schema redesign + partitioning, addition of monitoring, innodb tuning, indexing plan.Result:- Critical queries 16.2Ă faster
- Transition from regular timeouts â 99.99% availability
- -76% monthly cloud costs (storage & instance optimization)
Tech breakdown:Support for migration and partitioning and sub-partitioning on PG 12 at MonoprixUpdating the PostgreSQL version.Configuration optimization.Partitioning and sub-partitioning for easier and more efficient maintenance.Creation of a real-time stock for inventory with optimization of performance and load to have fast updates without additional cost with stored functions and PLpgSQL - CUBEPackagesJune 2020 - Today (6 years)
đ©ș PostgreSQL/MySQL Performance Audit (5 days â âŹ5,500)
đ Complete diagnosis of your databases to identify bottlenecks and quick wins.Deliverables:- Slow query & index analysis
- Server configuration review (Postgres/MySQL/MariaDB, RDS, AuroraâŠ)
- Check bloat, autovacuum, replication
- Top 10 prioritized actions with estimated ROI
- 1-page executive report for management
đ Typical results: -100 ms on p95 backend, -15% cloud costs.2. Checkout Speed Sprint (30 days â âŹ12,000)
⥠Targeted optimization of the payment tunnel and critical endpoints.Deliverables:- Quick wins in 72h (queries, index, parameterization)
- Backend & API checkout optimization
- Before/after benchmarks (p95, p99, throughput)
- Dev team coaching to sustain gains
- 30-day monitoring & stabilization
đ Objective: p95 <400 ms on checkout = +1â2% conversion.3. Rescue 72h Database Incident (âŹ3,600)
đš Express intervention in the event of a crash, contention, broken replication or unexpected load increase.Deliverables:- Express diagnosis in <4h
- Quick fix to restore production
- Implementation of safeguards (monitoring, alerts)
- Report with recommendations to avoid recurrence
đ Typical results: 99.99% uptime restored, guaranteed stability. - PASTEL ServicesDatabase Consulting & MySQL/MariaDB OptimizationENTERTAINMENT AND LEISURESeptember 2021 - September 2021Complete optimization of MySQL and migration to MariaDB to allow the use of more advanced features (localization).- Transition from SBR to RBR (ROW) replication- Transition of critical tables to MyRocks- Configuration optimization- Reducing server load to allow long-term use.
Reviews
JC
Jean Christophe
Medbox
Reviewed on 8/14/2023
It was a multi-dimensional analysis mission:
- MySQL server configuration
- analysis of schemas, data model, index
- proposals for changes
Emeric largely fulfilled the objectives of the mission. The report is clear and concise on the changes to be made.
A first successful mission with Emeric
Av
TRAVELJUICE
Reviewed on 6/1/2022
We enjoyed working with Emeric, a person who is attentive, available and professional
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Education
- Master Plasma PhysicsPolytechnique, Orsay, Jussieu2008Master de physiques des plasmas. Les plasmas sont des gaz partiellement ou totalement ionisés, dit chaud ou froid (fortement ou faible endothermique au regard de la population électronique concernée). Dense ou faiblement denses. Bref, les plasmas composent 98% de l'univers visible, leur étude est donc importante pour une meilleure compréhension de l'Univers.
Certifications
- ORACLE administrationCAP DATA2010