Senior/Staff Software Engineer (Platform Infrastructure)

RingCentral; Valencia; On-site; EUR 40,000 - 70,000; Full time

Benefits offered by this job

Life assurance

Private medical insurance

Competitive salary

Corporate training programs

Free language courses

Job summary

RingCentral is seeking an experienced Java Software Engineer in Valencia, Spain. You will join the Platform team to develop a high-performance REST API for our Unified Communications service. This role requires solid backend development experience, with the opportunity to work on globally distributed systems maintaining high availability. We offer a competitive salary, life assurance, and a collaborative work environment in a diverse workforce.

Qualifications

• 5+ years of solid backend development experience and excellent Java programming skills.
• Experience building high-load, fault-tolerant distributed systems.
• Understanding of microservices architecture and communication patterns.

Responsibilities

• Drive implementation and support of backend infrastructure and services.
• Collaborate with senior engineers on design decisions.
• Support products throughout the release cycle and automate testing.

Skills

Java programming

Backend development

Distributed systems

Microservices architecture

Problem-solving skills

Linux operating systems

English communication

Tools

Docker

Kubernetes

Redis

Kafka

Job description

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.