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Samuel K.SK

Samuel K.

CTO Fractional FullStack | Claude React Node

€1,100/day
1 project
Paris 13e Arrondissement, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Samuel

Hello 👋
I am Sam, a fractionalCTO / VP Engineeringwith 14 years of experience: I help founders, CTOs, and CIOs scale their tech products, with strong expertise inGenerative AIand **cloud architecture**.
My approach is formalized in **Better Call Sam**: btrcallsam.com/fr

🎯 My Fractional CTO missions


*CTO as a Service/ VP Engineering / Tech Lead / Head of Engineering
  • Creating SaaS from scratch or redesigning an IS to a modern architecture
*Technical recruitment& team structuring, stack choices, engineering culture
  • **Technical audit**, tech due diligence (investment funds), product scoping
*AIStrategy: roadmap, LLM integration into the product, governance
  • Also available as a Senior FullStack developer (Web & Mobile)

🤖 Generative AI & Augmented Dev


*AI-assisted Dev:Claude Code, Cursor, GitHub Copilot, Codex

*Product LLM Integration:Claude (Anthropic) API, OpenAI, Mistral

*AI Architectures:RAG, autonomous agents, MCP, function calling

*Vector Search:pgvector, Pinecone, embeddings
  • AI Strategy: use case scoping, evals, AI FinOps, safeguards

💻 Technical Stack


*Backend:Node.js, Python, PHP (Symfony, Laravel), REST & GraphQL APIs

*Frontend:React, Next.js, TypeScript, Vue, Angular

*Mobile:iOS, Android, React Native

*Data:PostgreSQL, MySQL, MongoDB, Redis

*Payment:Stripe, PayPal, Braintree

☁️ DevOps & Cloud


*Cloud:AWS, Azure, GCP

*IaC & Orchestration:Terraform, Kubernetes, Docker, GitOps

*CI/CD:GitHub Actions, GitLab CI

*Observability:Prometheus, Grafana, Datadog
  • **Microservices**, high availability, scalability

🏆 References

Docaposte · Veolia · Berger-Levrault · Scality · Stemmerlife

I work onshort-term missions(audit, POC, scoping) as well as **long-term commitments**. Contact me to discuss your project.
  • English

    Fluent

  • French

    Native or bilingual

  • Spanish

    Conversational

  • German

    Basic

Can work on-site
Paris 13e Arrondissement (up to 50km)

Experience

  • Scality
    Malt logoOn Malt
    DevOps Engineer
    TECH
    August 2023 - October 2023 (2 months)
    Paris, France
    Assistance for setting up a protection system on Nginx
    Agile methodology Nginx Docker Amazon Web Services (AWS) Python Git
  • Docaposte
    Tech Lead Build
    RETAIL (LARGE RETAILERS)
    January 2021 - Today (5 years and 6 months)
    Courbevoie, France
    Development of a multi-channel mail sending and mail tracking platform, advanced user role management using different application rules under Symfony 4.4 and Angular 11

    - Setup of RESTful APIs for communication between backend and frontend using FOSRestBundle (SF)
    - Integration of unit tests, integration tests, and functional tests (API: Codeception, Angular: Karma.js, Jasmine, Integration: Selenium)
    - Setup of CI/CD under Gitlab CI for the DEV, REC, PREPROD, and PROD environments
    - Management of 4 developers (1 backend, 2 frontend, and 1 fullstack), code review, assistance during difficulties
    - Daily development monitoring, leading Daily Scrum meetings, leading sprint retrospectives (Agile ritual)
    - Setup of authentication via Keycloak
    - Application security with various tools: OWASP review, Snyk, CyberWatch, Sonar Qube...
    - Technical lead for the project during discussions with Docaposte's internal teams
    - Estimating and costing the development time for features
    - Prioritizing JIRA tickets for sprints with the Product Owner
    Symfony Angular PostgreSQL Nginx Docker Keycloak Agile methodology REST
  • Veolia
    Senior Development Lead
    ENERGY AND UTILITIES
    April 2019 - October 2020 (1 year and 6 months)
    Aubervilliers, France
    Development and maintenance of a "Planning" application for managing Veolia truck routes under Symfony 4.4
    - Interaction and development coordination with the various Android, Java, and Angular teams within the RVD (Waste Recycling and Valorization) unit
    - Setup of unit tests, integration tests, and functional tests (Codeception, Karma.js)
    - Setup of RESTful APIs for various necessary exchanges for the application's proper functioning
    - Deployment on different EC2 instances and ALB instances

    Technical environment: Docker Compose (Nginx, Php, MongoDB), Symfony 4.4, PHP 7.3, Webpack Encore, SCSS / HTML 5, RESTful API - CentOS 7, MongoDB 4.0, AWS
    Symfony 4 MySQL Nginx Docker Microservices MongoDB Agile methodology Material Design

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Education

  • Computer Science Expert
    EPITECH
    2012

Certifications

  • Symfony expert
    SensioLabs
    2015

Skill set

Categories