People Matter

Senior Java developer (RingCX Analytics)

RingCentral

RingCentral

Software Engineering, Data Science
Valencia, Spain
Posted on May 21, 2025

Say hello to possibilities.

At RingCX, we’re building a cloud-based platform that helps businesses make and receive calls as well as handle messages via chat, email, SMS, and social media—all in one place. Companies use our product to communicate with their current and potential customers efficiently. Our platform is already operational, serving hundreds of businesses and processing millions of conversations every month.

What makes RingCX stand out is our rich analytics and AI-powered features. Our AI receptionist handles incoming calls, automating routine tasks and ensuring customers reach the right person faster. RingSense, our AI assistant, helps agents during conversations by providing smart suggestions, summaries, and insights, making communication smoother and more efficient.

On the engineering side, we run a microservices architecture on AWS, currently consisting of 12 services. We focus on scalability, reliability, and high availability to ensure smooth, real-time communication.

If you're looking to work on a live, high-load system, develop AI-driven features, solve complex technical challenges, and contribute to a growing product, join us at RingCX!

Technology stack:

  • Development: Java, Spring, GRPC, Flink, Kafka, Kafka Connect, ClickHouse, MySQL, MongoDB, AWS (S3, DynamoDB, Airflow, Athena).

  • Deployment stack: Docker, Kubernetes.

  • Common: GitLab, Jira, Jenkins

Key Responsibilities:

  • Design, implement, and support Backend microservices of a highly loaded data operation system

  • Proactively find gaps and Improve reliability, scalability, and security

  • Handle Production support in case of incidents - drive it till resolution, provide root causes and implement follow up action items to avoid recurrencies

  • Support BI developers in the creation of customer reports

  • Improve team efficiency by implementing best engineering practices

Qualifications & Skills:

  • 5+ years of Java, Spring programming experience

  • Experience working with microservices architecture

  • Experience with development of high-load systems

  • Ability to both write components from scratch and deal with legacy code

  • Understanding and experience with architectural patterns in high-load and distributed systems

  • Good knowledge of SQL

  • Experience with event based architecture

  • Experience with Kubernetes and AWS services

  • English B2+

  • Energy needed to quickly learn and understand new technologies

  • Experience with iterative methodologies and ability to work in an Agile environment

Will be an advantage:

  • Hands-on experience with Kafka, MySQL, ClickHouse

  • Basic knowledge of Kotlin

  • Knowledge of ETL

What We Offer:

  • A collaborative and high-performing professional team.

  • The opportunity to work with cutting-edge data technologies and solve challenging, large-scale data problems.

  • A dynamic project environment with ample opportunities for personal growth, professional development, and career advancement.