Software Engineer in Test – Performance Testing

Nextech Systems

Lead Software Engineer in Test at Nextech driving quality engineering for AI-powered healthcare solutions. Leading automation frameworks and performance testing in distributed systems.

Posted 7/8/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AzureCloudDistributed SystemsDockerFluxGrafanaKubernetesMS SQL ServerPrometheusSQL

About the role

Key responsibilities & impact

Design, develop, and execute scalable performance test strategies to validate the reliability, scalability, and responsiveness of enterprise applications and distributed systems.
Develop and maintain automated performance test scripts using k6 to simulate real-world user workloads and identify system bottlenecks.
Analyze application, database, and infrastructure performance metrics to identify performance issues and provide recommendations for optimization.
Design and maintain reusable performance testing frameworks, utilities, dashboards, and reporting solutions.
Build and maintain performance dashboards and automated reports using InfluxDB, Grafana, and Flux queries.
Collaborate with Software Engineers, Product Managers, DevOps, and Infrastructure teams to establish performance requirements and integrate performance testing into the software development lifecycle.
Integrate performance testing into Azure DevOps CI/CD pipelines to enable continuous performance validation.
Execute load, stress, endurance, spike, scalability, and capacity testing across cloud-native and distributed application environments.
Develop SQL queries to support test validation, performance analysis, and database performance investigations.
Produce performance analysis reports, communicate findings, and partner with development teams to validate performance improvements.
Support performance testing in containerized and distributed environments using Docker and Kubernetes where applicable.
Promote performance engineering best practices, standards, and continuous improvement initiatives.
Define, monitor, and analyze key performance metrics, including latency, throughput, and system resource utilization, using observability platforms such as InfluxDB, Prometheus, Grafana, and similar tools.

Requirements

What you’ll need

Bachelor's degree in Computer Science, MIS, Engineering, or a related technical field.
5+ years of Software Development, Software Engineer in Test (SET/SDET), or Performance Engineering experience.
Strong hands-on experience with k6 for performance testing, including test scripting, workload modeling, optimization, and reporting.
Strong SQL querying skills, preferably with Microsoft SQL Server (MSSQL).
Experience with InfluxDB and Grafana, including Flux queries, dashboard development, templating, alerting, and automated reporting.
Experience integrating performance testing into Azure DevOps CI/CD pipelines.
Strong understanding of performance testing methodologies, including load, stress, endurance, spike, scalability, and capacity testing.
Experience testing REST APIs, distributed systems, and cloud-native applications.
Familiarity with application performance monitoring and observability tools.
Strong analytical, troubleshooting, and problem-solving skills.
Excellent organizational, communication, and collaboration skills in Agile development environments.
Strong analytical and problem-solving skills, with the ability to identify workflow gaps, performance bottlenecks, and complex edge cases.
Experience leveraging AI-assisted development tools such as GitHub Copilot, Claude Code, Cursor, and ChatGPT to improve engineering productivity and quality.
Hands-on experience with performance profiling and debugging tools, including Chrome DevTools.

Benefits

Comp & perks

Generous annual bonus opportunity
401(k) with Employer Match
Flexible Time Off: take time off when you need it without worrying about available hours
11 paid holidays
Your Day Your Way - Celebrate a day of cultural or social significance to you
Insurance: Choice of Medical, Dental, and Vision plans
Health Savings Account with employer match
Flexible Spending Account
100% Company-Paid Parental leave (After 6 months with the company)
100% Company-Paid Life Insurance and Short/Long Term Disability Insurance
Nextech Luminary Peer Recognition Program
Wellness Program including discounts on medical premiums
Employee Assistance Program with free counseling sessions available
Corporate Discounts on Retail, Travel, and Entertainment

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Performance TestingTest ScriptingWorkload ModelingPerformance OptimizationSQLLoad TestingStress TestingEndurance TestingCapacity TestingPerformance Analysis

Soft Skills

Analytical SkillsProblem-Solving SkillsOrganizational SkillsCommunication SkillsCollaboration Skills