Dayforce is a global HCM platform offering a comprehensive array of services encompassing payroll, HR, benefits, workforce management, talent, and analytics. With the mission of "m
Senior Performance Engineer
Location
United States
Posted
7 days ago
Salary
$80.5K - $143.8K / year
Seniority
Senior
Job Description
Senior Performance Engineer
Dayforce
Role Description We are seeking a Senior Performance Engineer with a strong software engineering background and deep expertise in profiling, debugging, and optimizing application performance at scale. This is a developer-first role focused on improving system efficiency through code-level analysis, architectural insights, and data-driven optimization. You will work closely with engineering teams to identify performance bottlenecks, optimize execution paths, and ensure our platforms are highly scalable, reliable, and cost-efficient. - Profile, analyze, and optimize application code to improve: - Execution efficiency - CPU, memory, and I/O utilization - Latency and throughput - Conduct deep-dive investigations into performance issues using tools such as: - SQL Profiler - dotTrace - DebugDiag - WinDbg - Fiddler - Observability platforms - Identify and resolve performance bottlenecks at the code, database, and system level, leveraging profiling data, logs, and telemetry. - Analyze and optimize: - C# / ASP.NET application performance (threading, async patterns, memory usage, GC behavior) - Database queries and execution plans (MS SQL, MongoDB) - Network calls and API behavior - Collaborate with developers and architects to: - Embed performance considerations into system design - Influence architectural decisions for scalability and efficiency - Drive performance-focused code reviews - Optimize enterprise SaaS applications across: - Multi-tier web architectures - Microservices-based distributed systems - Design and execute capacity and scalability experiments to guide system sizing and cost optimization. - Build and enhance tools to monitor, analyze, and visualize performance metrics in cloud environments. - Analyze performance data and provide clear, actionable recommendations to engineering and product stakeholders. - Leverage AI tools to automate analysis, optimize workflows, and improve engineering productivity. - Contribute to and lead performance engineering best practices across teams. Qualifications - Strong background in software development with a focus on performance optimization. - Proficiency in one or more programming languages: - C# - Python - Strong experience with: - ASP.NET / .NET application performance tuning and diagnostics. - Experience with scripting and automation: - Python - JavaScript - Deep hands-on experience with profiling and debugging tools, such as: - SQL Profiler - dotTrace - DebugDiag - WinDbg - Fiddler - Strong experience with code-level profiling and optimization techniques. - Hands-on experience with database performance tuning: - MS SQL - MongoDB (query optimization, indexing, execution plans) - Proven ability to: - Analyze and optimize code for quality, efficiency, and performance. - Diagnose complex performance issues in distributed systems. - Solid understanding of: - Microservices and distributed system design. - API performance and service interactions. - Experience with observability and performance monitoring tools, such as: - AppDynamics - OpenTelemetry - DBA Dash - Datadog - Prometheus - Grafana - Experience working with engineering workflows and tracking systems such as Jira. - Demonstrated ability to integrate AI tools to optimize/redesign workflows and drive measurable impact. - Strong collaboration and communication skills, with the ability to influence technical decisions. Requirements - Experience with performance testing tools (e.g., JMeter, Gatling, k6, LoadRunner). - Familiarity with CI/CD pipelines and integrating performance validation into workflows. - Experience with containerization and orchestration (Docker, Kubernetes). - Experience with advanced profiling techniques (e.g., flame graphs, heap analysis, thread dumps). - Background in cloud cost optimization and efficiency engineering. - Experience with non-functional requirement (NFR) gathering and performance test planning. Benefits - Dayforce is fueled by the diversity of our talented employees. We are an equal opportunity employer and consider and embrace ALL individuals and what makes them unique. - We believe our employees should be happy and healthy, with peace of mind and a sense of fulfillment. - We encourage individuals to apply based on their passions. - Dayforce encourages personal and professional growth. - We offer excellent time away from work programs, comprehensive wellness initiatives, and recognition through competitive pay and benefits. - With a commitment to community impact, including volunteer days and our charity, Dayforce Cares, we provide opportunities for you to thrive both in your career and personal life. - Our focus is not just on your job but on supporting you to be the best version of yourself.
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