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Charles HornickCH

Charles Hornick

Senior Java Architect | Fractional CTO

€690/day
Liège, BE
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Charles

Senior Java Architect | Fractional CTO | Custom Development

Nearly 15 years designing scalable, high-quality, and evolving Java application designs and architectures for scale-ups and innovative SMEs through ESNs. I help CTOs and technical leaders avoid costly mistakes and accelerate their time to market.

I solve 3 critical problems:
→ Your current Java architecture doesn't scale and is hindering your growth
→ You need a stable, high-performing application, and fast
→ Your team lacks a senior technical leader without the budget for a full-time CTO

My services:
🎯 **Audit & Architectural Redesign**: Critical evaluation, technical roadmap, migration to modern architectures
🎯 **Custom Development**: Stable, high-performing Java application, developed in short iterations to ensure you always know where you're going
🎯 **Fractional CTO**: Strategic technical leadership 1-2 days/week for fintech/SaaS scale-ups

Also available as a Technical Leadto structure your teams: application design, CI/CD, upskilling developers through internal training.

**Technologies**: Java/Spring Boot, Modular Monolith, Microservices, Cloud (AWS), DevOps, Event-Driven Architecture, Deep Refactoring.


📧 Let's discuss your technical challenges - first consultation is free.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Liège (up to 30km)

Experience

  • NRB
    Lead Developer
    DIGITAL AND IT
    March 2024 - March 2025 (1 year)
    Liege, Belgium
    During my work:
    • I modified the Gitlab repository to reduce deployment time at the client's, from 1h30 to 10s, through content splitting and scripting;
    • I increased test coverage of use cases to ensure greater adaptability to future business requests;
    • I optimized SQL queries to ensure no query exceeded 100ms;
    • I performed refactoring to optimize and fully cover key functionalities, while eliminating any risk of side effects during future modifications;
    • I proposed and validated business improvements that simplified application usage;
    • I mentored other developers in discovering CI (Trunk Based Development, Parallel Development, Automated Test, etc.)
    • I implemented numerous complementary documents to allow any member to deploy even without technical knowledge, to continue necessary refactoring, etc.
    Tech Lead Architecture SQL Java OSGI
  • Centre Médical Thier Mère Dieu
    Expert Java Developer
    MEDICAL
    March 2023 - February 2024 (11 months)
    Liege, Belgium
    During the period I worked on the medical appointment application for medical practices, I had the opportunity:
    • to assist the tech lead in architectural and application design decisions;
    • to coach developers to implement development practices that improve their productivity;
    • to provide the foundational elements for implementing Continuous Delivery and Domain-Driven Design;
    • to implement a pragmatic strategy for technological and architectural migration to pay down technical debt.
    • to participate in the development of key features.
    Java SQL Architecture Coaching CI/CD
  • Acsone SA/NV
    Software Engineer
    DIGITAL AND IT
    June 2020 - March 2023 (2 years and 9 months)
    Liege, Belgium
    During my time at Acsone, I was responsible for the architecture and complete development of a glass panel production monitoring application, based on IoT, with a significant DB impact (>1000 writes per second).

    I also provided internal training on clean architectures (such as Ports & Adapters, as well as SOLID, KISS, and YAGNI principles).
    Architecture Java SQL IoT Kubernetes

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Education

  • Haute Ecole de la Province de Liège - INPRES
  • Bachelor's Degree
    Institut d'enseignement de promotion social de la communauté française
    2014
    Bachelier

Skill set

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