You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Bastien CantetBC

Bastien Cantet

Full Stack Developer | Next.js | Rust | DevOps

€500/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Bastien

Hello, my name is Bastien,
Full-stack developer specializing in Rust, NestJS, and Next.js.
I help companies design high-performance, scalable, and observable architectures (Kubernetes, Prometheus, Redis, PostgreSQL).
I work on complex SaaS projects, real-time data pipelines, or fintech platforms with high reliability constraints.
My goal: to deliver clean, documented code and robust production systems.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km)

Experience

  • Quantfox
    Full Stack Engineer
    BANKING AND INSURANCE
    March 2025 - September 2025 (6 months)
    Paris, France
    I contributed to the development of market analysis tools based on artificial intelligence, aimed at fixed income trading players (banks, hedge funds, asset managers).
    • Development of high-performance web applications in Rust and Next.js to automate technological audits and extract trading opportunities in real-time from complex financial data.
    • Optimization of backend APIs in Rust to ensure the speed and reliability of market indicator processing, in collaboration with data science teams.
    • Participation in the design and improvement of advanced widgets, integrating sophisticated algorithms for flow tracking, market event analysis, relative value detection, and price pattern identification.
    • Technological watch and contribution to the continuous improvement of the platform, in a demanding environment where performance and data security are essential.
    Next.js NestJs Rust PostgreSQL Kubernetes
  • BCUBIX
    Full Stack Engineer
    SOFTWARE PUBLISHING
    September 2024 - February 2025 (5 months)
    Paris, France
    I worked as a full-stack engineer on the development and transformation of a CRM for the cultural sector. This project allowed me to explore various challenges, from integrating external APIs to setting up a scalable SaaS infrastructure, while also participating in company life and professional events.
    • Development and maintenance of a CRM dedicated to the cultural sector, with the addition of custom extensions to meet specific client needs.
    • Integration of numerous external APIs, particularly mailing (Mailchimp, Mailjet) and ticketing (Weezevent) solutions, to automate and enhance CRM functionalities.
    • Design and deployment of the SaaS version of the CRM on Kubernetes, with deployment management via Helm and Helmfile.
    • Creation of a centralized API within the Kubernetes SaaS infrastructure, facilitating communication between different services and partners.
    • Participation in trade shows and professional events to represent the company, interact with partners, and gather user needs.
    Kubernetes Node.js PHP React.js API
  • Freelance
    Full-Stack & DevOps Freelancer
    January 2023 - Today (3 years and 5 months)
    Through my freelance missions, I've had the opportunity to collaborate with a wide range of clients, from tech startups to SMEs undergoing digital transformation. This experience allowed me to be involved in all stages of web product creation and evolution: from defining needs to production, including technical consulting, refactoring existing architectures, and providing support on scalability and cloud migration challenges. I am committed to delivering robust, well-documented solutions that are truly adapted to my clients' business needs.
    • Full-stack development of applications and APIs with Next.js and NestJS, using MongoDB and PostgreSQL as per business requirements.
    • Taking over and refactoring existing websites, including rewriting Express.js APIs to NestJS to improve maintainability and performance.
    • Setting up and managing DevOps infrastructures: Helmfile, Helm, Kubernetes, Docker, Traefik, and Go to ensure application scalability, security, and availability.
    • Deployment of monitoring and observability solutions with Grafana, Prometheus, and Loki to ensure performance tracking and system reliability in production.
    • Technical support for clients on migration to SaaS solutions, transition to public cloud, and infrastructure optimization to handle increased load.
    • Writing precise technical documentation to facilitate project onboarding, maintenance, and handover.
    • Consulting on software architecture, scalability, and tool modernization, with a results-oriented and reliability-focused approach.
    Next.js NestJs PostgreSQL Kubernetes Rust

Recommendations

Be the first to recommend Bastien

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Bachelor Grande Ecoles
    Epitech
    2025
  • Certificate in Information Technology
    Université Laval
    2024

Skill set

Categories