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Nicolas GautrotNG

Nicolas Gautrot

Senior Java/Spring Back-end Developer

€500/day
Paris, FR
8-15 years
Java
Spring
Hibernate
REST APIs
SQL

Average response time: 1 hour

Freelancer profile translated to English.
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About Nicolas

With over 11 years of experience in Java back-end development, I have designed and evolved information systems for banking, finance, and retail. I specialize in Java/Spring (Spring Boot, RESTful web services, batch processing) with a strong focus on reliability, performance, and integration into critical environments.

I notably worked for Crédit Agricole Titres on user portals, microservices, and integration batches: designing new features, RESTful web services, indexing/search (Solr), CI/CD (Jenkins, Sonar, Nexus), production fixes, and delivery support. I am comfortable in hybrid or remote environments, within distributed teams.

Today, I am open to remote opportunities (permanent contract, freelance, or umbrella company) where I can:
  • strengthen or refactor Java/Spring back-ends,
  • design maintainable and tested REST APIs,
  • leverage my business experience in banking/finance to assist product and business teams.

Stack: Java 8-21, Spring/Spring Boot, REST, batch, JSF, Hibernate/JPA, Angular (notions), SQL, Jenkins, Sonar, Maven, Solr.
Banking and Financial Services
Postal Services and Logistics

  • French

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • 3D3Print
    Independent Entrepreneur
    RETAIL (SMALL BUSINESS)
    February 2025 - March 2026 (1 year and 1 month)
    Moirans-en-Montagne, France
    Independent management of a 3D printing business (client relations, scheduling, invoicing, maintenance) alongside my ongoing backend development project.

    • Design of decorative pieces and prototypes in 3D on Fusion 360 / Study and customization of 3D models
    • On-demand 3D printing service
    • Mechanical and electronic maintenance of the 3D printer fleet
    • Inventory management / invoicing, order tracking
    Autonomy Project Management Invoicing
  • Crédit Agricole Titres
    Senior Java / J2EE Developer
    BANKING AND INSURANCE
    June 2022 - January 2025 (2 years and 7 months)
    Archamps, France
    • Java 11/17 / Spring / Spring Boot Backend: Design and development of backend features for the group's online stock trading portals, for individuals and employees, using Java 11/17 / Spring and Spring Boot.
    • Creation and evolution of RESTful web services to integrate data from client platforms and query internal and external services.
    • Development and maintenance of integration, indexing, and data purging batches in Java 11/17, for sensitive business processes.
    • Participation in software quality through unit tests (JUnit, Mockito), monitoring continuous integration, and fixing Jenkins/Sonar alerts.
    • Intervention on historical JSF 2.0/xHTML user interfaces and occasional contribution to next-generation portals in Angular 16.
    • Management of application deliverables during major and minor releases in coordination with the integration team, using Jenkins and Nexus.
    • Technical lead for the Solr 3.5 to 9.6 migration, including deployment, configuration, adaptation of data loading batches, and evolution of search mechanisms on the front-ends.
    Java Spring Hibernate REST APIs SQL
  • Logista
    Experienced Java / J2EE Developer
    LOGISTICS AND SUPPLY CHAIN
    May 2016 - May 2022 (6 years)
    Vincennes, IN 47591, USA
    • Development and maintenance of the management part of the Strator solution, used in the Tobacco/Press sector in France, within a multidisciplinary team of 8 people.
    • Design of business features in Java/J2EE with Hibernate and JSF, in a context of evolutionary and corrective maintenance of a central management application.
    • Development of communication interfaces between the management application and the client-side sales software via web services.
    • Spring Batch batches: Realization of batch processing with Spring Batch for data aggregation, alert reporting, and server/client synchronization.
    • Implementation of unit tests associated with developments and automation of functional tests with Greenpepper.
    • Occasional contribution to business reporting via an AngularJS dashboard for tracking turnover and annual comparisons.
    • Handling of bug fixes encountered by clients and participation in maintaining the operational condition of the solution.
    Java Hibernate Spring AngularJS SQL
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Education

  • Bachelor's degree in
    ETNA (School of Digital Technologies) Le Kremlin-Bicêtre
    2012
    Bachelor en
  • DUT in Electrical Engineering and Industrial Computing
    University Paris XII Créteil
    2009
    DUT Génie Electrique et Informatique Industrielle
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