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Nicolas ChiappelloniNC

Nicolas Chiappelloni

Java Tech Lead / senior dev

€700/day
Bruxelles, BE
3-7 years

Average response time: 1 hour

About Nicolas

As a Freelance Backend Developer and Technical Lead, I see myself as a Software Craftsman.
My mission is to translate the most complex business challenges into elegant, high-performance Java solutions, whether it's for
national-scale enterprises or high-growth startups. I am deeply driven by the principles of DDD, TDD, and Clean Architecture,
believing that thoughtful design is one path to sustainable growth and maintainability.
Beyond the code, I bridge strategy and execution, aligning teams and goals to create real impact.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Smals - Public Health
    Java Tech Lead
    February 2021 - October 2024 (3 years and 8 months)
    Bruxelles, Belgium
    Project UHMEP - platform for creating, assigning, and tracking non-medical prescriptions.
    - Led backend of UHMEP platform using Spring Web, WebFlux, FHIR standards, DDD & TDD.
    - Established coding standards through reviews, pair programming, mentoring sessions, and weekly workshops aligning junior and senior developers.
    - Managed CI/CD pipelines with Jenkins, OpenShift and Docker; ensured smooth releases.
    - Developed cryptographic pseudonymization Java library ensuring GDPR compliance.
    - Contributed to building a mock application for stakeholder services and an Angular-based demo app for client presentations.

    Project AMS - automates and managing support ticket lifecycles across public health.
    - Designed, implemented and deployed NiFi flows integrating Alerta monitoring with ServiceNow to automate the incident lifecycle.
    - Managed the project lifecycle from specifications to delivery.
    - Collaborated with infra and ops teams to define flow specs, operational constraints, and reliability goals.
    Domain Driven Design Spring boot TDD Angular Apache Nifi
  • Digital code
    Backend Developer
    January 2021 - January 2024 (3 years)
    Project COVID-19 - Handling nationwide big data.
    - Built & maintained NiFi pipelines for nationwide COVID-19 big data (tests,
    vaccination, consultations).
    - Developed Spring Boot monitoring tools integrated with NiFi improving issue
    detection and cross-team communication.
    - Created a Python test framework for NiFi, significantly reducing regressions and
    delivery errors in a high-pressure, fast-changing environment.
    - Contributed to rapid prototyping for high-stakes demonstrations to key
    stakeholders.



    Spring boot Apache Nifi Python TDD

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Education

  • Bachelor's Degree in
    ECI Liege
    2020
    Bachelor's Degree in

Skill set

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