Performance Engineer

We are looking for a Senior Performance Engineer to own the performance posture of Gcores Edge Network from defining testing strategy and observability to shipping latency improvements at fleet scale. You will operate at the intersection of systems engineering network infrastructure and developer experience enabling teams to move fast without breaking performance.

What youll do:

• Define and continuously evolve the performance testing strategy. Ensure test workloads mirror production traffic patterns regression suites remain green and alerts are acted upon with documented runbooks. 
• Instrument the edge fleet for deep observability latency histograms resource saturation signals and tracing pipelines so performance regressions surface before they reach end users. 
• Design and enforce staged (A/B canary) rollout processes for performance-sensitive changes. Own the feedback loop between test environments and production. 
• Identify and drive systemic throughput latency and efficiency improvements across the edge network from kernel tuning and eBPF offloads to traffic shaping and caching strategy. 
• Continuously raise the bar on configuration management agentic workflows and automated performance gates. Reduce toil; increase signal-to-noise in performance data. 
• Guide ops dev and support engineers through technical direction runbooks and shared test environments. Raise the performance literacy of the broader engineering org. 
• Partner with Product R&D Network Security and Support teams to ship performance-aware features. Serve as a subject-matter expert during performance-related incidents and drive post-incident improvements. 

Qualifications :

What We Are Looking For:

• Deep expertise in Linux/Unix environments kernel internals process scheduling memory management and I/O subsystems. 

• Proficiency with performance profiling and tracing tools: eBPF (bpftrace libbpf) perf gdb strace flamegraphs and related tooling. 

• Strong scripting and automation skills Python Bash and infrastructure-as-code (Ansible Terraform or equivalent). 

• Solid understanding of networking fundamentals: TCP/IP HTTP/23 TLS load balancing and traffic engineering. 

• Experience with cloud platforms (AWS Azure GCP) and hybrid/bare-metal edge infrastructure. 

• Hands-on experience with agentic coding workflows and AI-assisted engineering toolchains. 

• Excellent communication skills able to translate low-level performance findings into business impact for diverse audiences. 

Nice-to-have:

• Puppet Prometheus Grafana VictoriaMetrics / Victoria Logs 

• BGP and related routing protocols 

• Programming in C Go Rust or Python 

• eBPF program authorship 

• Kernel bypass networking (DPDK / XDP) 

• Web security and DDoS mitigation practices 

• AI/ML in production systems 

• Edge / CDN architecture 

Additional Information :

Benefits

At Gcore we want you to do your best work and enjoy the journey. Our benefits are designed to support your growth well-being and life beyond work: 

• Competitive compensation 
• Flexible working hours and hybrid or remote options depending on your role 
• Work from anywhere in the world for up to 45 days per year 
• Private medical insurance for you and your family* 
• Extra paid vacation and sick leave days* 
• Support for lifes important moments and celebrations 
• Language courses to help you connect and grow 
• Modern welcoming offices with snacks drinks and entertainment* 
• Team sports and social activities* 

*Benefits may vary depending on your location. 

Equal Opportunity Employer 

We provide equal opportunity to all applicants without regard to race color religion sex sexual orientation age gender identity gender expression national origin disability or any other legally protected characteristics. 

Remote Work :

Yes

Employment Type :

Full-time