Freelancer profile translated to English.

Description

Available quickly

I help startups build reliable, performant, and scalable platforms.

Senior Developer & Tech Lead, formerly CTO of a B2B SaaS, I work on both code and architecture: Symfony backend, APIs, performance, and infrastructure (Docker, Kubernetes, CI/CD).

My role is not limited to development:

→ I challenge technical choices

→ I simplify architectures

→ I optimize scalability and costs

Concrete results:

• +30% performance on live applications

• Faster and more stable APIs under heavy load

• Automated and reliable deployments

• Better visibility (monitoring, logs, alerting)

I work on:

• Symfony backend development & REST APIs

• Application performance & scalability

• Infrastructure (Docker, Kubernetes, CI/CD)

• Technical refactoring & technical debt reduction

• PostgreSQL optimization & response times

Accustomed to working directly with CTOs, founders, and product teams, I integrate quickly and bring a business-impact-oriented technical vision.

Do you have a slow, unstable, or hard-to-evolve application?

I help you stabilize it and prepare for growth.

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km), Nantes (up to 50km), Lille (up to 50km), Marseille (up to 50km), Lyon (up to 50km)

Gravite
Co-Founder & CTO
SOFTWARE PUBLISHING
January 2023 - December 2025 (2 years and 11 months)
Paris, France
Founder and technical leader of a team of 3 people: 1 Backend, 1 Frontend, and 1 Data Engineer

Missions
✓ Technical coordination of a multi-skilled development team
✓ Definition of critical cloud application architecture
✓ Setup of automated CI/CD pipelines via Github Actions
✓ Management of software quality through code review and DevOps tooling
✓ Monitoring of application performance with Datadog and Grafana
✓ Setup of statistics tracking with Prometheus
✓ Structuring of database data to optimize dashboard rendering
✓ Pre-calculation of data for fast rendering with Materialized Views and Redis cache
✓ Massive data ingestion via Messenger and Redis (1 million events / month)
✓ Pair-programming with developers to share best practices.

Technical Environment
Symfony, React, AWS, Kubernetes, Github Actions, Docker, Datadog, Grafana, Prometheus,
Terraform, Sentry

Result
Over the months, we improved the application's performance by 30% with faster chart rendering. Instant visibility of consumed resources on Kubernetes with Grafana also allowed us to track which elements consume the most.
Symfony Fullstack Docker DevOps React.js
Click&boat
Fullstack Developer
TRAVEL AND TOURISM
February 2022 - August 2023 (1 year and 7 months)
92100 Boulogne-Billancourt, France
Fullstack Developer and technical lead for Symfony within a squad of 4 people

Missions
✓ Migration of the payment system from Adyen to Stripe
✓ Design and implementation of a new boat insurance system
✓ Setup of a new Matomo analytic tracking system
✓ Optimization of application Docker containers to speed up deployment
✓ Migration from legacy to Symfony with adherence to Hexagonal architecture
✓ Monitoring of application KPIs with Grafana by retrieving data via Prometheus
✓ Use of DDD architecture to facilitate long-term application evolution.

Technical Environment
Symfony, Angular, Docker, Terraform, GitLab CI, Mysql

Result:
Alerting in case of application crash via Prometheus and Kubernetes
Overall improvement of website performance
PHP Symfony PHP Symfony Development Fullstack Docker
Juritravail
Symfony4 Developer
LEGAL
November 2016 - March 2022 (5 years and 4 months)
Paris, France
Symfony Developer within a team of 7 people under the CTO's direction

Missions
✓ Migration of the website from a legacy version to Symfony 4
✓ Mentoring and upskilling apprentices
✓ Implementation of a new product for creating dematerialized documents
✓ Migration of the deployment system to Jenkins (Docker image containerization)

Technical Environment
JavaScript, PHP, Memcache, Docker, JIRA, Jenkins
PHP Symfony Development Docker JavaScript DevOps Atlassian JIRA

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Master of Engineering in Computer Science, Computer Science
SUPINFO - The International Institute of Information Technology
2018
Master d'ingenieur en informatique, Informatique
BTS, Domotics
Jean jaures
2013
BTS, Domotique

Check out Sylva's education

Sylva Etokabeka

Senior Symfony Developer | React & API

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