Ddn

Staff Engineer - Performance

Pune, Mahārāshtra, India · On-site · FullTime

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About the role

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EmployerDdn
LocationPune, Mahārāshtra, India
Work styleOn-site
Employment typeFullTime
Employer posted2 months ago

We are seeking a Staff Engineer – Performance with strong expertise in data path and I/O performance for large-scale distributed file systems. This role focuses on analyzing, optimizing, and improving performance across the storage stack, from low-level code paths to system-wide behavior at scale.

You will work closely with architects and cross-functional teams to investigate complex performance issues, implement optimizations, and ensure high throughput and low latency in distributed systems. This role emphasizes hands-on technical contributions, performance tuning, and data-driven decision-making to improve overall system efficiency and reliability.

Key Responsibilities:

Contribute to the performance design of data path and I/O components in distributed file systems

Perform performance analysis, troubleshooting, and optimization of large-scale, high-performance file systems

Show full description

Implement performance-aware improvements across CPU, memory, storage, and network layers

Optimize performance-critical file system code, primarily in C++

Apply best practices for performance measurement, profiling, benchmarking, and regression detection

Investigate and resolve complex system-level performance issues

Collaborate with architects and senior engineers to incorporate performance considerations into system design

Work with cross-functional teams to validate and meet performance goals across the stack

Participate in design reviews with a focus on performance implications

Share knowledge and support peers in adopting effective performance engineering practices

Requirements:

Accountable and highly motivated with solid people skills

10+ years’ experience system software development and complex problem resolution.

Deep understanding of distributed file systems and scale-out storage architectures

Expert-level knowledge of data path and I/O path design and optimization

Strong proficiency in C++ with extensive experience in performance-critical code

Proven expertise in performance measurement techniques, including profiling, tracing, benchmarking, and custom tooling

Strong foundation in distributed systems principles, including scalability, concurrency, and fault tolerance

Demonstrated experience optimizing file system or storage system code for performance at scale

Experience with high-performance, high-scale-out file systems in production environments

What Success Looks Like

Consistently delivers measurable improvements in throughput, latency, and scalability

Identifies and mitigates performance bottlenecks early in the development lifecycle

Produces reliable performance analysis that informs design and implementation decisions

Contributes to stable, repeatable performance testing and regression detection practices

Effectively collaborates with team members to meet performance goals across components

Builds and applies strong performance engineering expertise to improve code and system quality

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