Staff Engineer - Performance

DataDirect Networks; Pune District; On-site; INR 3,500,000 - 5,500,000; Full time

Benefits offered by this job

Vacation plans

Paid holidays

Bonus programs

Tuition reimbursement

Employee referral program

Excellent medical, dental and vision

Paid leave programs

Anniversary and recognition awards

Job summary

DataDirect Networks is hiring a Staff Engineer – Performance in Pune, India, to drive high-throughput, low-latency storage solutions. You will analyze, tune, and optimize data paths across distributed file systems, working with architects and cross-functional teams to meet demanding performance goals.

The role emphasizes hands-on development in C++, profiling, benchmarking, and data-driven decision making to improve system efficiency and reliability at scale.

Qualifications

• 10+ years of system software development and complex problem resolution.
• Deep understanding of distributed file systems and scale-out storage.
• Expert-level knowledge of data path and I/O path design and optimization.
• Strong proficiency in C++ with experience in performance-critical code.
• Experience with profiling, tracing, benchmarking, and custom tooling.

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.
• 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.

Skills

C++

Performance tuning

Distributed systems

Profiling

Benchmarking

Concurrency

Fault tolerance

Data path optimization

Tools

Profiling tools

Tracing

Custom tooling

Job description

We are on our way to being the first company to power 1 MILLION GPUs and want world-class talent to join our amazing team!

The world is moving faster than ever, and yet, it will never move this slowly again. We are at the forefront of an incredible technological revolution but, at its core, it is fueled by incredible people. People like you.

1,000 Global Employees

11k Happy Customers

16 International Offices

We’re Looking for the Best and Brightest

We are the world’s leading data intelligence platform that reliably accelerates massive datasets for actionable real-time insights. Join our team to help the best and brightest minds tackle the world’s biggest challenges in business, science, medicine, academia and government.

Do What Can’t be Done

For the past 20 years, our team has kept us at the forefront of storage technology and has provided the foundation for enabling researchers to push the limits of “what can be done.”
These innovations take research and discovery to the next level, enabling them to discover cures to disease, observe global warming patterns, model innovative automotive and aerospace designs, discover new sources of energy, make communities safer, and accelerate business results across a wide variety of industries.

DDN Helps Build Your Future, Too

At DDN, we understand our customers’ diverse needs. Whether you’re a data scientist, IT professional, executive, or researcher, our solutions empower you with cutting-edge technology and unparalleled support.

• Highly Competitive Vacation Plans
• Paid Holidays
• Bonus Programs
• Tuition Reimbursement
• Employee Referral Program
• Excellent Medical, Dental and Vision Benefits
• Paid Leave Programs
• Anniversary and Recognition Awards

Location

Employment Type

Full time

Location Type

On-site

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
• 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
• We pride ourselves on our commitment to delivering tangible and consistent results.

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