Senior Software Engineer (Platform Infrastructure)

[Applicants: Be among the first 25 applicants | Industry: Software Development | Type: Full-time | Level: Mid-Senior level] 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 WorkWe 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 CoherenceResponsibilitiesDrive 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 & SkillsSolid 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 plusExperience building public APIs;Experience with Netty or other low-level/high-performance frameworks; u...