Dayforce is a global human capital management (HCM) company headquartered in Toronto, Ontario, and Minneapolis, Minnesota, with operations across North America, Europe, Middle East, Africa (EMEA), and the Asia Pacific Japan (APJ) region. Our award-winning Cloud HCM platform offers a unified solution database and continuous calculation engine, driving efficiency, productivity and compliance for the global workforce. Our brand promise - Makes Work Life Better™ - Reflects our commitment to employees, customers, partners and communities globally. About the Opportunity 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. 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, 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 Skills and experience we value - 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 What’s in it for you 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. About the Salary Ranges Please note that the salary range mentioned in this job description should serve simply as a guide. The final compensation offered may vary based on a variety of factors, including bonuses and/or incentives, or a candidate’s experience, skills, budget and location. Our company is committed to providing a fair, equitable, and competitive package that reflects the value an individual brings to the organization. Fraudulent Recruiting Beware of fraudulent recruiting. Legitimate Dayforce contacts will use an @dayforce.com email address. We do not request money, checks, equipment orders, or sensitive personal data during the recruitment process. If you have been asked for any of the above, or believe you have been contacted by someone posing as a Dayforce employee, please refer to our fraudulent recruiting statement found here: https://www.dayforce.com/be-aware-of-recruiting-fraud Dayforce actively monitors all job applications to ensure authenticity. Submissions determined to be fraudulent or misleading will be declined from the recruitment process #LI-Remote

Dayforce is a global human capital management (HCM) company headquartered in Toronto, Ontario, and Minneapolis, Minnesota, with operations across North America, Europe, Middle East, Africa (EMEA), and the Asia Pacific Japan (APJ) region. Our award-winning Cloud HCM platform offers a unified solution database and continuous calculation engine, driving efficiency, productivity and compliance for the global workforce. Our brand promise - Makes Work Life Better™ - Reflects our commitment to employees, customers, partners and communities globally. About the Opportunity 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. 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, 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 Skills and experience we value - 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 What’s in it for you 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. About the Salary Ranges Please note that the salary range mentioned in this job description should serve simply as a guide. The final compensation offered may vary based on a variety of factors, including bonuses and/or incentives, or a candidate’s experience, skills, budget and location. Our company is committed to providing a fair, equitable, and competitive package that reflects the value an individual brings to the organization. Fraudulent Recruiting Beware of fraudulent recruiting. Legitimate Dayforce contacts will use an @dayforce.com email address. We do not request money, checks, equipment orders, or sensitive personal data during the recruitment process. If you have been asked for any of the above, or believe you have been contacted by someone posing as a Dayforce employee, please refer to our fraudulent recruiting statement found here: https://www.dayforce.com/be-aware-of-recruiting-fraud Dayforce actively monitors all job applications to ensure authenticity. Submissions determined to be fraudulent or misleading will be declined from the recruitment process #LI-Remote

Location: Austin Texas, Reston, Virginia OR Fully Remote About the Opportunity: We’re looking for a Senior Prototyping Engineer to join Seekr as a bridge between high-level product concepts and technical reality. In this role, you will be the primary engine for rapid experimentation, turning abstract ideas into functional, interactive prototypes. While you will leverage our existing React and Next.js stack, you are an "open thinker" who can move beyond the front end—using Python and FastAPI to spin up lightweight back-end services that bring your prototypes to life. The Impact: At Seekr, we value speed and agility. As a Prototyping Engineer, you aren’t just building features; you are de-risking our roadmap. You possess strong functional design skills, allowing you to make smart UX decisions on the fly without needing a pixel-perfect mockup. You’ll work in a high-trust environment where your ability to pivot, experiment, and "fail fast" will directly influence the direction of our global applications. Skills and Qualifications: - Bachelor's degree in Computer Science, Design, or equivalent work experience. - 5+ years of experience with JavaScript/TypeScript, CSS, and HTML. - 5+ years of experience with React (including Next.js and hooks) to build high-fidelity interactive experiences. - Proficiency in Python and FastAPI for developing rapid, lightweight back-end prototypes and APIs. - Working knowledge of how AI and LLMs work - Experience effectively utilizing AI technologies and tools (e.g., large language models, agents, etc.) to enhance workflows - Functional Design Skills: Ability to design intuitive user flows and layouts for web applications; experience with tools like Figma is a plus. - Proficient in using AI Coding assistants (Claude Code, Cursor, etc.) to dramatically accelerate the prototyping lifecycle. - Experience with JSON APIs and integrating front-end prototypes with live or mocked data sources. - Agile Mindset: Comfortable with "throwaway code" and shifting directions quickly based on stakeholder feedback. - Strong Communication: Ability to present prototypes to both technical leads and non-technical stakeholders to demonstrate "proof of concept." About the Company: Seekr is a leader in explainable and trustworthy artificial intelligence designed to power mission-critical decisions in enterprises, government, and regulated industries. SeekrFlow™, our end-to-end AI platform, provides secure, auditable AI solutions tailored to sectors where transparency, accuracy, and compliance are paramount. Available across cloud, on-premises, and edge environments, SeekrFlow reduces bias, strengthens data integrity, and simplifies model oversight so organizations can rely on trusted AI decisions in high-stakes settings that impact society’s most sensitive and vital systems. Trusted by leading enterprises and government agencies, we partner with defense, finance, telecom, and critical infrastructure leaders to enable AI solutions that drive real-world results with unmatched transparency and control.We are a team of strategic thinkers and problem-solvers tackling the toughest challenges facing critical infrastructure and global enterprises through best-in-class AI models and customer deployment.Our team operates with unwavering commitment to our core values and mission: - We are driven by outcomes—our customers' success is what we strive for every day. - We believe trust is earned, which is why we build explainability and transparency into the entire AI lifecycle. - We take our responsibility to deliver secure AI seriously. - We believe innovation drives progress—we are building the technologies that power the systems our society depends on. Company Benefits: - Meaningful Mission & Impact - Work with a deeply talented, collaborative team solving some of the toughest AI challenges that matter. - Equity Ownership – RSUs that let you share directly in Seekr’s long‑term success and growth. - Time Off That Respects Real Life – Unlimited PTO plus 14 paid company holidays to truly recharge. - Work Your Way – A flexible hybrid work environment with offices in Reston, VA and Austin, TX, plus remote options and flexible working hours. - Competitive Total Rewards – A role‑appropriate compensation structure that supports long‑term growth, including base salary, bonuses, or commission plans depending on role. - 401(k) with Company Match – Build your future with a retirement plan that includes employer matching. - Comprehensive Health & Wellness – Medical, dental, vision, and life insurance coverage starting day one—for you and your family. - Parental Leave – Paid parental leave to support employees as they welcome a new child through birth, adoption, or foster placement.

Title: Senior Full Stack Engineer Location: USA VA Crystal City - 2521 S Clark St (VAC119) Job Description: Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Software Engineering Job Qualifications: Skills: Containerization, Go, Microservices Architecture, Vuejs Certifications: None Experience: 10 + years of related experience US Citizenship Required: Yes Job Description: YOUR IMPACT Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department ofWar’s mission to keep our country safe and secure. OUR COMPANY IronEagleX(IEX), a wholly owned subsidiary of General Dynamics Information Technology(GDIT), delivers agile IT and Intelligence solutions. Combining small-team flexibility with global scale, IEX leverages emerging technologies to provide innovative, user-focused solutions that empower organizations and end users tooperatesmarter, faster, and more securely in dynamic environments. JOB DESCRIPTION TheSeniorFull StackEngineerwillleadbackenddesign and development,build front-end interfaces, craftDevSecOpsworkflows,leverage AWS services, and implement containerization strategiesfor high-priority projects. This position requires extensiveexpertiseinbackend and frontend technologies in production environments. This is ahybridrolelocatedin Crystal City, VAwiththeoptionforflex hours. MEANINGFUL WORK AND PERSONAL IMPACT As aSenior Full Stack Engineer,you willplay a critical role inpartnering with product managers, integrating backend microservices, andautomating CI/CD pipelines insupport high-level governmentobjectives. Working directly on classified projects,youwillbe responsible fordeveloping,maintaining, and securing datainfrastructurein cloud-basedenvironments. JOB DUTIES(INCLUDE BUT ARE NOT LIMITED TO) - Develop scalable backend solutions using Go programming language within a microservices architecture - Build interactive and responsive front-end interfacesutilizingthe Vue.js framework and relevant libraries - Integrate backend microservices seamlessly with frontend components to create cohesive and efficient applications - Leverage AWS services like SQS, S3, and managed database solutions including OpenSearch/ElasticSearch and PostgreSQL for application development and deployment - Implement containerization strategies using Kubernetes (specifically EKS) to deploy scalable, reliable applications - Utilize Helm for managing Kubernetes applications as needed - Participate in automation and engineering tasks within DevSecOps workflows (e.g., CI/CD pipelines, continuous monitoring) - Apply infrastructure-as-code principles for application deployment and configuration - Contribute to designing and building secure, efficient systems within cloud-based environments - Partner with project and product managers, users, and stakeholders to define, design, and deliver new features - Write clean, maintainable, and efficient code, following coding standards and best practices - Conduct thorough code reviews, debug issues, and troubleshoot tomaintainapplication stability and reliability REQUIRED SKILLS: - Extensive experience as a Full Stack Developer working with backend and frontend technologies in production environments - Strongexpertisein Go programming language - Solid understanding of microservices architecture and techniques like service discovery, circuit breakers, and software design patterns - Proficiencyin JavaScript and the Vue.js framework for front-end development - Strong experience withElasticSearch/OpenSearch,PostgreSQLand AWS services, including SQS and S3 - Hands-on knowledge of containerized environmentsleveragingKubernetes - Familiarity with Helm or managing Kubernetes deployments is highly desirable - ProficiencyinDevSecOpsmethodologies including CI/CD automation, continuous monitoring, and infrastructure as code - Exceptional communication and teamwork skills, capable of working collaboratively or independently in an agile environment - Deep understanding of the software development lifecycle, along with tools and methodologies to support modern development practices WHAT YOU’LL NEED TO SUCCEED - Clearance:CurrentDoWTS/SCIClearance is.Candidates without this clearance will not be considered. - Experience:8+yearsof experiencein in Go programming, microservices architecture, PostgreSQL, AWS services, and working with OpenSearch/ElasticSearch - Education:Bachelor’s degree inComputerScience,Software Engineering, or a related field (or equivalent experience. - Certifications: - Role requirements: Hybrid work environment with 3 days on sitein Crystal Cityand two days WFH - Due to US Government Contract Requirements, only US Citizens are eligible for this role  IEX/GDIT IS YOUR PLACE At IEX/GDIT, the mission is our purpose, and our people are at the center of everything we do. - Growth: AI-powered career tool thatidentifiescareer steps and learning opportunities - Support: An internal mobility team focused on helping you achieve your career goals - Rewards: Comprehensive benefits and wellness packages, 401K with company match,competitivepayand paid time off - Community: Award-winning culture of innovation and a military-friendly workplace OWN YOUR OPPORTUNITY Explore a career at IEX/GDIT andyou’llfind endless opportunities to grow alongside colleagues who share your passion for the mission and delivering results.#iexjobs Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans The likely salary range for this position is $187,000 - $253,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range. Scheduled Weekly Hours: 40 Travel Required: None Telecommuting Options: Hybrid Work Location: USA VA Crystal City Additional Work Locations: Total Rewards at GDIT: Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology. Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc. Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans