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API Developer (H/F) Job Opening In Puteaux – Now Hiring Altares


Job description

Altares-D&B, the exclusive member of the Dun & Bradstreet network in France, Benelux, and Maghreb, transforms data into actionable business insight.

We empower businesses across finance, compliance, procurement, and marketing to make smarter decisions using trusted, enriched information.

As part of our next phase of growth, we're investing in expanding connector solutions that embed our data directly into our customers’ operational environments.

This includes our current CRM and ERP connectors, as well as future integration opportunities with third-party systems.

Job Description:

We are seeking an experienced API Developer with strong expertise in Java and Spring Boot to design and implement robust, scalable, and secure APIs. The ideal candidate will have a solid understanding of API development best practices, microservices architecture, and performance optimization.

Reporting to the Head of Data, you will be part of a team of Developers and Data Engineers that work closely with our delivery team to create a scalable and performant data accessibility platform.

Key Responsibilities:

  • Design, develop, and maintain RESTful APIs using Spring Boot and tools like Restdocs or Springdoc.

  • Ensure API security, scalability, and high availability.

  • Implement unit and integration tests to ensure API reliability and performance.

  • Optimize API performance and troubleshoot production issues.

  • Maintain detailed technical documentation for API endpoints and usage.

  • Work with containerization and deployment tools for smooth API delivery.

  • Required Skills & Experience :

  • Minimum 5 years of experience as an API developer

  • Strong proficiency in Java and Spring.

  • Experience with asynchronous programming and performance tuning in Java.

  • Knowledge of OAuth2, JWT, and other authentication/authorization standards.

  • Deep understanding of RESTful API principles, HTTP methods, and best practices.

  • Experience working with containerization(Docker, Kubernetes), and cloud platforms (AWS, Azure, GCP).

  • Familiarity with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB).

  • Familiarity with CI/CD pipelines, version control (Git), and automated testing.

  • Knowledge of API documentation tools like OpenAPI/Swagger.

  • Nice-to-Have Skills:

  • Experience with GraphQL or gRPC.

  • Familiarity with microservices architecture and service orchestration.

  • Familiarity with API platforms, such as KONG

  • Understanding of event-driven systems using Kafka, RabbitMQ, or similar tools.

  • Basic knowledge of DevOps practices and infrastructure-as-code tools (Terraform, Ansible).

  • Key Qualities:

  • Strong problem-solving and analytical thinking.

  • Excellent collaboration skills and ability to work in technical and cross-functional teams.

  • Ability to work independently and manage multiple priorities.

  • Motivated to learn and embrace new technologies.

  • Fluent in English (spoken and written) – mandatory

    If you are passionate about being part of a team that builds a new platform with modern technologies, we’d love to hear from you!

    Required Skill Profession

    Computer Occupations


    • Job Details

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    Unlock Your API Developer Potential: Insight & Career Growth Guide


    Real-time API Developer Jobs Trends (Graphical Representation)

    Explore profound insights with Expertini's real-time, in-depth analysis, showcased through the graph here. Uncover the dynamic job market trends for API Developer in Puteaux, France, highlighting market share and opportunities for professionals in API Developer roles.

    1531 Jobs in France
    1531
    28 Jobs in Puteaux
    28
    Download Api Developer Jobs Trends in Puteaux and France

    Are You Looking for API Developer (H/F) Job?

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    The Work Culture

    An organization's rules and standards set how people should be treated in the office and how different situations should be handled. The work culture at Altares adheres to the cultural norms as outlined by Expertini.

    The fundamental ethical values are:

    1. Independence

    2. Loyalty

    3. Impartiapty

    4. Integrity

    5. Accountabipty

    6. Respect for human rights

    7. Obeying France laws and regulations

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    Interview Tips for API Developer (H/F) Job Success

    Altares interview tips for API Developer (H/F)

    Here are some tips to help you prepare for and ace your API Developer (H/F) job interview:

    Before the Interview:

    Research: Learn about the Altares's mission, values, products, and the specific job requirements and get further information about

    Other Openings

    Practice: Prepare answers to common interview questions and rehearse using the STAR method (Situation, Task, Action, Result) to showcase your skills and experiences.

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