We are looking for an experienced Java Software Engineer to join our Platform team and help develop an award-winning REST API for our Unified Communications service.

In the Platform team, we build high-load infrastructure subsystems that address cross-cutting concerns in a geo-distributed environment, including API and WebSocket Gateways, distributed caches, and service discovery.

You will have the chance to design and develop highly available, globally distributed systems that maintain 99.999% availability, process more than 100,000 requests per second, handle more than a million concurrent WebSocket connections and consistently meet millisecond-level latency targets.

How we work

We operate with a flat team structure and value constructive technical discussions. Engineers participate in requirements clarification, design proposals, implementation reviews, and production incident analysis.

Technologies we work with:

Java, Netty, Redis, Kafka, Kubernetes, Docker, Oracle Coherence

Responsibilities

- Drive implementation and support of highly available backend infrastructure and services, collaborating closely with senior engineers on design decisions;

- Work with architects and other stakeholders to convert high-level requirements into component-level designs and implementation tasks;

- Support products throughout the release cycle, including QA support and production incident investigation;

- Develop and extend CI/CD pipelines to automate testing and meet team-specific delivery requirements;

- Work in an Agile team and contribute to improving development processes and team effectiveness.

Qualifications & Skills

- Solid backend development experience (5+ years) and excellent Java programming skills;

- Experience building high-load, fault-tolerant distributed systems;

- Understanding of microservices architecture and inter-service communication patterns (e.g., synchronous/asynchronous communication, message queues, L4/L7 load balancing);

- Familiarity with network fundamentals (TCP/UDP, HTTP, WebSocket, DNS);

- Excellent problem-solving skills and a proactive approach to identifying and addressing technical challenges (e.g., concurrency bugs, memory leaks);

- Experience working with Linux operating systems;

- Good spoken and written English communication skills.

Will be a plus

- Experience building public APIs;

- Experience with Netty or other low-level/high-performance frameworks; understanding of non-blocking I/O concepts.

What we offer

- Well-coordinated professional team;

- Life assurance and private medical insurance;

- Competitive salary;

- Great opportunities for self-realization, professional and career growth;

- Corporate training programs, free language courses;

- Excellent work environment and good collaboration;

- Opportunity to be a part of the international company.

RingCentral is deeply committed to equality and values a diverse workforce.

We welcome individuals from all backgrounds and walks of life to join us. Regardless of your profile, personal circumstances, or unique characteristics, you belong here.