Sr. Java developer at Jobgether – Tremblay-en-France, Île-de-France

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Sr. Java Developer in France.

This role offers an exciting opportunity to work on the development and optimization of core backend systems in a modern, cloud-driven environment. You will contribute to building scalable, high-performance applications that support both real-time and batch data processing. The position involves close collaboration with cross-functional teams in an agile setup, where innovation and technical excellence are highly valued. You’ll have the chance to work with cutting-edge technologies while influencing system architecture and engineering best practices. This is a hands-on role suited for someone who thrives in solving complex challenges and delivering robust solutions. The environment encourages ownership, continuous learning, and impactful contributions to mission-critical systems.

• Develop, maintain, and enhance core backend systems, including origination platforms and batch processing services.
• Design and implement scalable, high-performance features with a focus on reliability and efficiency.
• Work on both real-time and batch data processing pipelines to support business-critical operations.
• Integrate external and internal services using APIs and SDKs.
• Ensure high code quality through unit, integration, and functional testing practices.
• Contribute to CI/CD pipelines and support automated deployment processes.
• Collaborate within agile teams using modern development and version control tools.
• Participate in technical discussions, architecture decisions, and implementation of best practices.
• Mentor junior developers and support team knowledge sharing when needed.

• Minimum 5 years of experience in software development with strong expertise in Java and/or Scala within the JVM ecosystem.
• Solid understanding of software engineering principles, design patterns, and system architecture.
• Experience with testing methodologies including unit, integration, and functional testing.
• Hands-on experience with CI/CD tools such as Jenkins, GitHub Actions, or similar.
• Proven ability to work with APIs, SDK integrations, and distributed systems.
• Familiarity with agile methodologies and tools like Git, Jira, or similar platforms.
• Experience with cloud platforms and services; certifications are a plus.
• Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience.
• Preferred: experience with AWS services (ECS, S3, EC2, Lambda), Infrastructure as Code (Terraform), and big data tools (Spark, Databricks, EMR).
• Familiarity with technologies such as Spring Boot, Redis, Snowflake, and workflow tools like Airflow.
• Strong problem-solving skills, proactive mindset, and ability to mentor team members.

• Fully remote work setup with flexibility to work from anywhere.
• Competitive compensation in USD under a contractor agreement.
• Opportunity to work with modern cloud, data, and distributed system technologies.
• Collaborative and agile work environment with international exposure.
• Opportunities for continuous learning and professional growth.
• Involvement in impactful, large-scale projects serving global markets.