> Markdown version of [/jobs/ext/1323219-performance-engineer-sr](https://www.wearedevelopers.com/jobs/ext/1323219-performance-engineer-sr). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Performance Engineer Sr - **Company:** Dayforce, Inc. - **Location:** United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** ASP.NET, JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Artificial Intelligence, Application Performance Management, JIRA, C Sharp (Programming Language), Program Optimization, Profiling, Code Review, Databases, Database Queries, Software Debugging, Distributed Systems, Memory Management, Fiddler (Software), HP Loadrunner, Apache JMeter, Python (Programming Language), Microsoft SQL Server, MongoDB, Performance Tuning, Query Optimization, Prometheus, Sqlprofiler, Software Engineering, WinDBg, Datadog, Performance Testing, Grafana, Database Optimization, Gatling, DotTrace, Indexer, Containerization, Kubernetes, Low Latency, Optimization Algorithms, Performance Monitor, Cloud Optimization, Appdynamics, Docker, Programming Languages, Microservices - **Published:** July 17, 2026 - **Apply:** https://www.dice.com/job-detail/d7fcba5a-e7dc-468b-a135-8723113d604b ## About the Role 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., * Strong background in software development with a focus on performance optimization * Proficiency in one or more programming languages: * C# and 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 What would make you really stand out * 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 ## Description 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. What you'll get to do * 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, and 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, 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 ## Related Videos - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) - [Frontend Performance Testing in practice](https://www.wearedevelopers.com/videos/8-frontend-performance-testing-in-practice) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [Integrate your Cognitive Assistant with 3rd-party DBs and software](https://www.wearedevelopers.com/videos/249-integrate-your-cognitive-assistant-with-3rd-party-dbs-and-software) - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)