Staff SW Applications Engineer

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Job Description

What you will do (Job Specific Details on the nature of the job and responsibilities).

Position details

Title of position: Staff Software Applications Engineer - Extreme Platform One

Position type: Full time - Onsite

Location: San Jose, CA

Position reports to: Sr Manager of Software Systems Engineering

Application deadline: Applications are being accepted on a rolling basis and this posting will remain open until filled.

Work authorization: We are unable to sponsor or take over sponsorship of an employment visa, including H-1B visas, at this time

Scope:

• Design, build, and scale a high-throughput data platform supporting enterprise-grade performance monitoring and analytics.
• Develop and optimize data streaming, processing, and storage solutions using technologies such as Kafka, Numaflow, ClickHouse, TimescaleDB, and Elasticsearch.
• Collaborate closely with platform, data, and engineering teams to deliver scalable, reliable, and high-performance solutions.
• Drive continuous improvement in platform performance, scalability, reliability, and operational efficiency.
• Stay current with emerging technologies and best practices, with opportunities for professional development through certifications and technical training.

Key Responsibilities

Data Platform Engineering

• Design and build real-time data ingestion pipelines using Kafka and Numaflow to process high-volume platform telemetry and monitoring events.
• Architect enrichment pipelines that transform raw event data into contextualized, actionable performance signals.
• Own the persistent storage strategy across ClickHouse, TimescaleDB, and Elasticsearch, matching each data store to the right access pattern, and optimize queries, indexing, and partitioning to meet latency and throughput targets at scale.
• Design data retention, rollup, and partitioning strategies that balance query performance with storage cost.
• Tune the EP1 performance monitoring platform to handle growing data volume and query concurrency.
• Identify and resolve bottlenecks across the full pipeline, from Kafka consumer lag to storage-layer query plans.
• Design for horizontal scalability, including partitioning, sharding, and load distribution across data stores.
• Establish capacity planning and load-testing practices for the platform's data infrastructure.

Build, Deployment & Collaboration

• Support pre-deployment verification, including performance regression testing and security checks.
• Collaborate with QA to validate data pipeline correctness and system resilience under load.
• Apply secure coding practices and participate in code reviews with a security lens.
• Maintain documentation of system architecture, data flows, and operational runbooks.
• Partner with engineering, data, and platform teams on design reviews and technical decisions.

Job Description Summary

Extreme Networks is seeking a highly skilled Staff Software Engineer to lead Performance Monitoring efforts for our Enterprise Platform ONE (EP1). This role is critical for building and scaling the data pipeline that ingests, enriches, and persistently stores platform telemetry at high volume, while maintaining strong security engineering practices and a performant, reliable infrastructure. The successful candidate will own the data ingestion and storage architecture, drive performance and scalability improvements, and keep the platform's code and dependencies secure.

Qualifications

Basic Requirements and Preferred Qualifications for the job.

We encourage people from underrepresented groups to apply. Come Advance with us! In keeping with our values, no employee or applicant will face discrimination/harassment based on: race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status, or veteran status. Above and beyond discrimination/harassment based on “protected categories,” Extreme Networks also strives to prevent other, subtler forms of inappropriate behavior (e.g., stereotyping) from ever gaining a foothold in our organization. Whether blatant or hidden, barriers to success have no place at Extreme Networks.

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