We are looking for a Senior Performance Engineer to take full ownership of performance, scalability, and stability of our global web-based platform, deployed on-premises or in the cloud and serving thousands of concurrent users worldwide. This is not a project role - performance engineering here is a continuous discipline embedded across the full development lifecycle.
You will be the single accountable owner for system performance: setting the standards, building the tooling, enabling teams, and ensuring that as our product complexity, user volumes, and business programs grow, the platform scales predictably and without regression.
Responsibilities:
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Performance Ownership. Define and maintain performance SLAs/SLOs, own system-wide KPIs (latency, throughput, concurrency, stability), and serve as the primary point of accountability for performance across every release
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Load & Scalability Engineering. Design, implement, and continuously evolve a comprehensive test suite covering load, stress, and endurance/soak scenarios. Model realistic usage patterns specific to our domain - large BOM navigation, product structure queries, search and filtering, change and release workflows and validate scalability for large tenants and peak program conditions
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Backend & Infrastructure Performance. Analyze and optimize across the full stack: application server behavior (JVM tuning, thread pools, memory management, GC), database query plans, caching effectiveness, and network/storage I/O. Work closely with infrastructure, database, and platform teams to drive improvements
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Global Performance Optimization. Identify and address regional performance disparities, analyze WAN latency and API behavior for globally distributed access, and contribute to architectural decisions around caching strategies and data locality
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Tooling & CI/CD Integration. Build and maintain an open-source performance toolchain. Integrate performance testing into CI/CD pipelines, implement automated regression detection, and enforce release gates based on performance criteria
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Observability & Root-Cause Analysis. Establish and operate observability infrastructure using open-source solutions. Lead deep root-cause analysis on latency spikes, memory leaks, throughput degradation, and long-running stability issues. Support production incidents where performance is a factor
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Cross-Team Enablement. Partner with development teams to embed performance thinking into design and implementation. Run training on performance anti-patterns and optimization techniques, and deliver actionable insights - not just reports.
Requirements:
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6+ years of hands-on experience in performance engineering
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Proven experience with on-premises enterprise systems and cloud environments
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Strong expertise in web application performance and REST/API performance testing
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Proficiency in Linux system diagnostics and low-level performance analysis
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Practical experience with open-source performance tooling: k6, Gatling, JMeter, or Locust
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Experience with observability stacks: Prometheus, Grafana, OpenTelemetry, Sentry
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Engineering mindset: capable of building, owning, and evolving systems, not just running tests
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Ability to operate independently and drive results across teams without close supervision
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Upper-Intermediate/Advanced English level
Nice to have:
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Background in PLM, ERP, or other large-scale enterprise platforms
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Experience working with complex data models and large object graphs (e.g., Bill of Materials hierarchies)
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JVM profiling and tuning experience, particularly for Java-based backend stacks
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Track record of integrating performance testing into CI/CD pipelines and enforcing automated quality gates
We offer:*
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Flexible working format - remote, office-based or flexible
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A competitive salary and good compensation package
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Personalized career growth
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Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
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Active tech communities with regular knowledge sharing
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Education reimbursement
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Memorable anniversary presents
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Corporate events and team buildings
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Other location-specific benefits
*not applicable for freelancers