Performance Engineer - Open Source

Jobgether SRL; United States; On-site; USD 110,000 - 190,000; Full time

Job summary

Jobgether SRL in United States is seeking a Performance Engineer — Open Source to strengthen the performance of software across CPUs, kernels, runtimes, databases and web technologies. You will work on measurement frameworks, dashboards and analytics to identify bottlenecks and drive improvements.

You will develop shared tools, mentor colleagues, and influence engineering practices with rigorous analysis and clear communication, across cloud platforms and diverse environments.

Qualifications

• Demonstrated experience improving software performance and scalability.
• Strong Linux (Debian/Ubuntu) environment experience.
• Knowledge of multi-layer performance concepts and bottleneck analysis.
• Experience with performance measurement tools (eBPF, DTrace, flamegraphs).

Responsibilities

• Drive software performance, efficiency, scalability, and correctness within a project.
• Analyze systems and code to identify bottlenecks and optimization opportunities.
• Develop and improve shared performance tooling, dashboards, and measurement frameworks.
• Strengthen test harnesses, pipelines, benchmarks, and observability capabilities.
• Collaborate with open source communities and cross-region teams to solve performance challenges.
• Mentor teams to establish a culture of measurement and rigorous engineering practices.

Skills

Linux performance tuning

eBPF tracing

Open source software

Profiling tools

C/C++ knowledge

Tools

eBPF

DTrace

Flamegraphs

Job description

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Performance Engineer - Open Source based in United States. This role is designed for engineers who bring exceptional rigor and clarity to software performance, efficiency, scalability, and correctness. You will work across the software stack, from CPUs, kernels, and runtimes to applications, databases, and web technologies. As a performance engineering specialist, you will help teams measure complex systems, identify bottlenecks, strengthen testing capabilities, and improve engineering practices. You will contribute to shared performance tooling, measurement frameworks, dashboards, and analytical capabilities while influencing performance culture across engineering teams. The role offers exposure to open source technologies, major silicon architectures, cloud platforms and diverse technical environments. You will also have opportunities to mentor colleagues, lead initiatives and apply your expertise across different products and engineering domains.

Accountabilities

• Drive software performance, efficiency, scalability, and correctness within a specific engineering project.
• Analyze systems, applications, and code to identify bottlenecks, performance regressions, scalability constraints, and opportunities for optimization.
• Develop and improve shared tools, infrastructure, dashboards, measurement frameworks, and reporting capabilities for performance analysis.
• Strengthen test harnesses, pipelines, benchmarks, and engineering processes to make previously difficult-to-measure areas observable and verifiable.
• Apply performance engineering techniques across different layers of the stack, from CPU and kernel behaviour through runtimes, databases, applications and web technologies.
• Collaborate with engineers and open source communities across different regions and technical disciplines to solve complex performance challenges.
• Teach, mentor and develop performance engineering skills within teams, helping establish a stronger culture of measurement, efficiency and technical rigor.
• Lead performance initiatives and influence engineering teams through technical expertise, clear communication and practical recommendations.
• Review code and technical designs with a focus on performance, scalability, efficiency, and correctness.
• Work with hardware and cloud ecosystems to optimise software stacks for different architectures, CPU families, and hypervisors.
• Share insights, tools and practices across engineering teams to raise performance standards throughout the product portfolio.

Requirements

• Demonstrated experience improving software performance, efficiency, scalability and correctness through practical engineering work, personal initiatives and professional projects.
• Strong experience with Linux, ideally including Debian or Ubuntu environments.
• Solid understanding of performance engineering concepts and the ability to investigate systems across multiple layers of the technology stack.
• Knowledge of low-level CPU behavior, including caches, registers, memory, vectorization and assembly language, is valuable.
• Experience with kernel performance concepts such as scheduling, context switching, and hardware acceleration is a plus.
• Familiarity with distributed systems performance, tracing, debugging, compiler optimization, profiling, and runtime performance.
• Experience with performance measurement and profiling tools such as eBPF, D-Trace, flamegraphs, or comparable technologies.
• Knowledge of benchmarking frameworks