Backend Developer, Java

Le Bureau des Talents

Backend Java Developer for an innovative AdTech and MarTech scale-up in Lyon. Contributing to critical applications with strong focus on performance and scalability.

Posted 7/24/2026full-timeLyon • 🇫🇷 FranceMid-LevelSenior💰 €50,000 - €60,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Java backend development, including REST API design and SQL data modeling, while ensuring application performance and reliability. Proficient in modern development practices such as CI/CD, microservices architecture, and cloud technologies.

Highest-signal resume keywords

Java Backend DevelopmentREST API DevelopmentSpring Boot / Spring FrameworkSQL (PostgreSQL, MySQL)CI/CD (GitLab CI, GitHub Actions, Jenkins)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaREST APISQLMavenGradleGitMicroservices ArchitectureDockerKubernetesElasticsearch

Soft Skills

CollaborationProblem-SolvingContinuous Improvement

Tools & Technologies

KafkaRabbitMQPrometheusGrafanaOpenTelemetryBashNode.jsTypeScript

Industry Keywords

Big Data ProcessingClean CodeSOLID PrinciplesHigh-Volume Platform

Tech Stack

Tools & technologies

AWSAzureCloudDockerElasticSearchGoogle Cloud PlatformGradleGrafanaJavaJavaScriptJenkinsKafkaKubernetesMavenMicroservicesMySQLNode.jsPostgresPrometheusRabbitMQSpringSpring BootSpringBootSQLTypeScript

About the role

Key responsibilities & impact

Design, develop and maintain backend applications in Java.
Build and evolve high-performance REST APIs.
Contribute to the development of Big Data processing pipelines.
Optimize application performance and ensure reliability.
Design and optimize SQL data models.
Participate in business requirements analysis and technical design.
Contribute to architectural decisions and platform evolution.
Perform code reviews and promote best practices (Clean Code, SOLID).
Drive continuous improvement of development industrialization.
Diagnose and fix production incidents.
Collaborate with Front-End, DevOps and Product teams.
Help scale the performance of a very high-volume platform.

Requirements

What you’ll need

3–5 years of experience in Java backend development.
Proficient in Java.
Spring Boot / Spring Framework.
REST API development.
SQL (PostgreSQL, MySQL, etc.).
Maven or Gradle.
Git.
Knowledge of REST principles, SOLID and Clean Code.
Nice-to-have: Kafka, RabbitMQ or other messaging systems.
Docker and Kubernetes.
CI/CD (GitLab CI, GitHub Actions, Jenkins, etc.).
Elasticsearch.
Microservices architecture.
Cloud (AWS, Azure or GCP).
Prometheus, Grafana or OpenTelemetry.
Bash.
Node.js / TypeScript.

Benefits

Comp & perks

Meal vouchers (tickets restaurant)
Health insurance covered at 70%
Contribution to commuting/transport costs
Remote work (1 day per week)
Modern offices located in Lyon
Experienced and supportive technical team
Highly technical environment
Large-scale projects
High autonomy and strong influence on technical decisions
Regular team events and after-work socials