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About this position
SoftTeco is looking for a Senior Performance Engineer to join a long-term international engagement. This is a hands-on role for an engineer who can contribute from day one: independently designing workload models, running load tests, and turning performance data into clear technical conclusions across integrated enterprise systems.
We are open to different professional backgrounds: a dedicated Performance Engineer with deep testing expertise, or a Backend (.NET), Salesforce, Cloud, or DevOps engineer with strong practical performance testing skills and the ability to quickly understand a complex technical environment.

Responsibilities
Design and maintain workload models and develop load test scenarios using Apache JMeter and Grafana k6
Plan and execute performance tests to evaluate scalability, stability, and system behavior under different load conditions
Analyze response times, throughput, error rates, and distributed traces in New Relic to identify bottlenecks and root causes of performance degradation
Correlate load test results with application and infrastructure metrics across API, authentication, integration, and infrastructure layers
Prepare and run data-loading scenarios across Salesforce and AWS integrations
Work with authentication and authorization flows involving Keycloak in test scenarios
Collaborate with developers, architects, infrastructure engineers, and the customer to understand system architecture and recommend performance optimizations
Own performance testing end to end: from workload design and execution to analysis, reporting, and recommendations
Continuously improve performance testing practices, automation, and analysis workflows
Use AI tools daily to accelerate test development, analysis, and troubleshooting

Technical skills

5+ years of experience in software engineering, DevOps, or performance engineering, including at least 23 years of hands-on performance testing
Strong practical experience designing workload models and developing and executing load tests with Apache JMeter and Grafana k6
Hands-on experience analyzing application performance in New Relic, including metrics, traces, and error analysis
Experience with data loading and integrations involving Salesforce and AWS
Understanding of authentication and authorization mechanisms, with practical experience with Keycloak or similar solutions
Solid understanding of backend systems, APIs, distributed architectures, and system integrations
Programming or scripting skills sufficient to develop, maintain, and troubleshoot performance test scenarios
Practical day-to-day use of AI tools in engineering work
Experience with .NET or Salesforce development is a plus
DevOps and cloud infrastructure experience is a plus
Database experience is a plus
Non-technical skills

Non-technical skills
English level B2 or higher
Ability to work independently and take ownership of technical outcomes
Fast learner, able to get into a complex system and new technologies quickly
Analytical mindset and a systematic approach to troubleshooting
Clear communication skills: able to explain performance findings and recommendations to customers and technical stakeholders
Comfortable working in a distributed international team
Proactive, flexible, and pragmatic approach to problem-solving

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