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Cédric Charière FiedlerCC

Cédric Charière Fiedler

API Architect · Performance · SRE | TS/Java

€800/day
2 projects
Nantes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Cédric

Passionate about IT since childhood, seasoned coffee drinker, and acrobatic gamer, I help companies make their systems reliable, performant, and industrialized.

**My Goal**: APIs that deliver on their promises, without any hitches.


What I Do

I work across the entire software production cycle to transform complex systems into robust and controlled platforms:
  • Needs analysis and technical scoping
  • Distributed systems architecture
  • Operability, performance, and resilience audits
  • Definition of operability strategies: SLOs, observability, BCP & DRP
  • Design and industrialization of testing strategies (goal: smooth deployment)
  • Sharing technical culture: training, workshops, educational materials

My Areas of Expertise

I specialize in distributed software architectures requiring high availability and robustness:
  • Multiservice APIs and B2B interconnections
  • Event-driven architectures (Message Brokers, Event Modeling)
  • Worker / batch / processing oriented architectures
  • Design of resilient, fault-tolerant, and scalable services
  • Cloud Native Architecture for operability goals (Clever Cloud, Azure): migration to sovereign solutions

My Playground

Based in the Nantes region, I work wherever a system needs to be made more reliable.

If your platform is starting to have major issues, I can provide a clear diagnosis before problems escalate. Shall we discuss it?
  • French

    Native or bilingual

  • English

    Fluent

  • German

    Conversational

Can work on-site
Nantes (up to 20km)

Experience

  • Asobo Studio
    Web Front-End Performance Expert, Engine Programmer
    VIDEO GAMES AND ANIMATION
    March 2024 - March 2025 (1 year)
    Bordeaux, France
    **Goal**: Make the UI more performant and lighter on PC & Xbox Series X|S.


    Major Impacts
    • 60/30 fps on critical screens (menus & cockpits)
    • Fundamental improvements to the internal JS framework (view compilation, asynchronous operations, lazy evaluation)

    Key Contributions
    • UI Front-end performance audit & optimization
    • Transposition of modern web techniques (Angular/React/Vue) to the internal engine
    • Team upskilling: profiling, metrics, performant UI patterns
    Web Performance Front-End Development Typescript Preact Jest
  • Klafuti
    Web Architect & Technical Director
    SOFTWARE PUBLISHING
    November 2023 - December 2025 (2 years and 1 month)
    Nantes, France
    **Goal**: Definition of an industrialized application foundation, enabling a Lean approach


    Major Impacts
    • Support reduced by 6x in 4 weeks (30h/week → 5h/week) thanks to observability + SRE
    • Deployment of a "**production-grade from V1**" SaaS (not a fragile MVP)
    • Migration from Azure to Clever-Cloud (+ Observability & CI/CD stack)

    Key Contributions
    2023–2024 • Foundation & Industrialization
    • Stack: Angular (Front) + Spring Boot (API) + Azure CI/CD
    • Blue/Green, Feature Flags, multi-level testing strategy
    2025 • Resilience & Scale
    • Multi-service resilience architecture: saga, isolation, retry/backoff, backpressure
    • Reliable third-party API integrations: security, monitoring, supplier drift management
    Spring Angular SRE Web Architecture Clever Cloud
  • siliceum
    President
    DIGITAL AND IT
    October 2019 - Today (6 years and 8 months)
    Clermont-Ferrand, France
    As President and co-founder of siliceum, I lead a team of freelancers specializing in software reliability, performance, and industrialization, with a strong emphasis on impact and execution quality.

    Major Impacts
    • 15+ clients supported on missions >6 months since 2020
    • Structured an internal team of up to 8 employees, managing delivery and multi-project coordination
    • Missions: API performance improvement with observed gains from ×2 to ×10 depending on the platforms
    • Cloud cost optimization reaching –40% after migration or environment rationalization.

    Key Contributions
    • Overall leadership: strategy, positioning, offerings, finance, recruitment, and internal organization.
    • Built a premium service model based on operational reliability and technical mastery.
    • Managed and developed teams (8 people) with a high standard for quality and communication.
    • Implemented reusable internal methodologies: technical foundations, SRE guides, QA practices, architecture models.
    • High-level client relations: outsourced technical direction, scoping, long-term support, crisis management.
    • Developed an expert brand (conferences, content, methods) and animated the local tech ecosystem.
    Recruitment Process Business Strategy Business Management Operational Management

Reviews

5.0

Out of 2 ratings

L

Laurent

Euromaster

Reviewed on 7/9/2021

ISO standard met with the previous mission.
L

Laurent

Euromaster

Reviewed on 6/1/2021

Initial phase of the mission was satisfactory thanks to Cédric's quick onboarding. His technical skills and sensitivity to testing are strong assets that he highlights daily. Cédric is appreciated by the team and IT, and doesn't hesitate to help with cross-functional tasks. He is also a pragmatic individual who uses his perspective to adapt his activities and advice to the overall context.

Recommendations

Clément GrégoireCG
FU
Antoine GueleraudAG
Clément Grégoire and 2 other people have recommended Cédric

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Education

  • Computer Engineering
    ISIMA
    2016
    L’ISIMA (Institut Supérieur d’Informatique, de Modélisation et de leurs Applications) est une grande école d’Ingénieurs en Informatique en Auvergne, axée sur les métiers de l’Informatique et de ses applications. Filière : Génie Logiciel et Systèmes Informatiques

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