Clean Air Act Engineer

ERGFairfax, VA

On-site Full-time

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Experience Level

Experience

Qualifications

The successful candidate will need to possess: 1. A deep understanding of Clean Air Act regulations and policies. 2. Exceptional management and organizational skills. 3. Strong communication abilities to effectively collaborate with clients and stakeholders. 4. A proactive and motivated approach to problem-solving in a fast-paced environment.

About the job

Join ERG, a leading research and consulting firm dedicated to providing exceptional support to federal, state, and commercial clients. Our multidisciplinary teams are comprised of nationally recognized experts in engineering, science, economics, public health, information technology, and communications. At ERG, we pride ourselves on hiring top talent and fostering a dynamic and flexible workplace that empowers you to develop your career. We are looking for a motivated individual who excels in prioritization, performance, and communication within a fast-paced environment.

We are on the lookout for a highly qualified Clean Air Act Engineer with a proven track record in management, organization, and communication. The ideal candidate will demonstrate a strong understanding of Clean Air Act regulations, statutes, and policies, especially in the areas of permitting and enforcement.

About ERG

ERG is a premier research and consulting firm that excels in delivering a vast array of support services to federal, state, and commercial clients. Our teams are recognized nationwide for their expertise across various disciplines, including engineering, science, economics, public health, IT, and communications. We are committed to nurturing the growth of our employees in a vibrant and flexible work environment.

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Clean Air Act Engineer

ERG

Full-time|On-site|Fairfax, VA

Nov 5, 2025

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Independent Contractor for Janitorial Services in Fairfax, VA

Citywide

Contract|On-site|Fairfax, Virginia, United States

Join Citywide as an Independent Contractor specializing in janitorial services in Fairfax, Virginia. This position offers you the opportunity to manage your own schedule while providing high-quality cleaning services to various facilities. You will play a crucial role in maintaining cleanliness and hygiene standards, ensuring customer satisfaction, and contributing to a healthy environment.

Apr 1, 2026

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Lead Water/Wastewater Engineer

ERG

Full-time|On-site|Fairfax, VA

ERG is a leading research and consulting firm committed to providing diverse support to federal, state, and commercial clients. Our multidisciplinary teams are renowned for their expertise in engineering, science, economics, public health, information technology, and communications. We are dedicated to hiring top talent and fostering a dynamic and flexible work environment that encourages professional growth.We are currently seeking a dedicated and experienced Water/Wastewater Engineer to spearhead and assist with various water infrastructure initiatives. In this pivotal role, you will engage directly with communities nationwide to evaluate their infrastructure challenges, devise innovative solutions, and secure funding for essential projects. Your contributions will play a crucial role in helping these communities provide safe, clean drinking water and maintain high water quality standards.

Dec 11, 2025

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Linux Cloud Engineer

grvty

Full-time|On-site|Fairfax, Virginia, United States

Join the mission-driven team at GRVTY as a Linux Cloud Engineer! In this role, you will play a key part in enabling secure, automated, and scalable deployment of cutting-edge signal processing tools. We are seeking a dedicated engineer to help design, build, and maintain secure and reliable systems that support crucial signal processing applications. You will work directly with innovative DevOps tools, container platforms, and cloud technologies, collaborating closely with engineers, security experts, and operations teams.

Mar 24, 2026

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Linux Platform Engineer

Rampant Technologies

Full-time|On-site|Aurora, CO, Fairfax, VA, Sarasota, FL

OverviewWe are in search of skilled Linux Platform Engineers to architect and implement cutting-edge automated IT infrastructure solutions. This position merges hands-on technical expertise with AI-driven automation to revolutionize infrastructure management at scale.Key ResponsibilitiesDesign, implement, and maintain automated solutions for IT infrastructure.Collaborate with cross-functional teams to enhance operational efficiency.Utilize AI technologies to streamline infrastructure management processes.Support troubleshooting and optimization of existing systems.Document processes and maintain up-to-date technical records.

Apr 11, 2026

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Custodial Technician - Full-Time

Shelter House

Full-time|$20/hr - $20/hr|On-site|Fairfax, Virginia, United States

Shelter House has supported Fairfax County since 1981, focusing on preventing and ending homelessness and domestic violence. The organization works closely with government partners, private organizations, and the local community to meet urgent needs. Guided by the values of Inclusivity, Collaboration, Accountability, Respect, and Empowerment (iC.A.R.E.), over 100 staff members assist nearly 2,000 people each year. Role overview The Custodial Technician (full-time) keeps the Katherine Hanley Family Shelter and its grounds clean, safe, and well maintained. This position is based in Fairfax, Virginia, and reports to the Assistant Director of Operations. The role is classified as non-exempt and pays $20.00 per hour. Main responsibilities Clean all areas of the shelter daily, including removing trash, vacuuming, sweeping, mopping, and disinfecting bathrooms and surfaces. Restock essential supplies such as paper towels, toilet paper, garbage liners, air freshener, and hand soap. Care for cleaning equipment by washing mop heads and keeping floor machines free of dust and debris. Act as the main contact for contractors and vendors who provide linens, pest control, and other key services. Maintain the grounds at both Katherine Hanley and Kate’s Place, collecting trash and removing debris as needed. Assist with repairs and installation of shelter furnishings and equipment, and stay informed about appliance operations and service needs. Support annual maintenance at Kate’s Place, such as changing air filters and checking smoke detectors. Log and report maintenance requests for both shelter sites and help troubleshoot facility issues. Assist front desk staff as needed, which may include answering phones, helping clients, and driving shelter vans. Work closely with the Assistant Director of Operations to keep the facility operating smoothly. Department and reporting Department: Katherine Hanley Family Shelter Reports to: Assistant Director of Operations Compensation Hourly rate: $20.00 FLSA status: Non-exempt

Apr 28, 2026

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Full-Time Custodial Technician at Shelter House | Fairfax, VA

Shelter House

Full-time|$20/hr - $20/hr|On-site|Fairfax, Virginia, United States

Position: Full-Time Custodial TechnicianDepartment: Katherine Hanley Family ShelterReports to: Assistant Director of OperationsFLSA Status: Non-ExemptSalary: $20.00 per hourAbout Shelter HouseFounded in 1981, Shelter House has been a leading grassroots organization addressing homelessness in Fairfax County. Our mission is to end homelessness and domestic violence through collaboration with community partners and government entities. Our dedicated team of over 100 employees has impacted the lives of nearly 2,000 individuals in the past year, with a focus on inclusivity and empowerment. We operate under core values of Collaboration, Accountability, Respect, and Empowerment (iC.A.R.E.).Role OverviewThe Custodial Technician is vital to maintaining the cleanliness and functionality of our shelter facility and grounds. This role involves managing cleaning tasks, coordinating with maintenance contractors, and ensuring a welcoming environment for our residents.Key Responsibilities:Conduct daily cleaning and maintenance throughout the shelter, including trash removal, floor care, surface disinfecting, and bathroom sanitation.Restock essential supplies such as paper products and soaps.Maintain cleaning equipment in good condition.Act as the liaison for contractors and service providers.Perform grounds upkeep, such as litter collection and debris removal.Assist with repairs and installations of shelter furnishings and equipment.Participate in annual maintenance checks, including air filters and smoke detectors.Support front desk staff with client interactions and transportation needs as necessary.Collaborate with the Assistant Director of Operations to ensure facility standards are met.

Apr 1, 2026

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Senior Fire Protection Engineer

Jensen Hughes

Full-time|Hybrid|Fairfax, Virginia, United States

Company Overview With a legacy of excellence dating back to 1939, Jensen Hughes is a global leader in fire protection engineering. Our wide-ranging expertise encompasses not only fire protection but also security consulting, risk analysis, emergency management, and digital innovation, among other fields. We take pride in our ability to address complex safety challenges, ensuring our clients can safeguard their most valuable assets. At Jensen Hughes, we are dedicated to fostering a culture of trust, integrity, and professional growth, with a firm belief that our employees are our greatest asset. We cherish the diverse perspectives and talents that each team member brings to our organization. Our Global Employee Networks offer platforms for professional development and shared experiences, creating a cohesive culture where everyone is empowered to learn, grow, and succeed together. Job Overview We are seeking a Senior Fire Protection Engineer with a robust background in life safety code consulting, sprinkler systems, fire detection and alarm systems, and passive fire protection. The ideal candidate should be well-versed in the application of National Fire Protection Association (NFPA) codes and Unified Facilities Criteria (UFC). Experience in performance-based fire engineering design is a plus. As a key member of our team, you will provide full-time engineering and technical support at a high-profile government location in the Washington, DC metropolitan area, with potential flexibility for a hybrid work schedule. This position offers an exciting opportunity to deepen your knowledge of fire suppression, fire alarm, and life safety systems in a dynamic and challenging environment.

Mar 26, 2026

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Junior Software Engineer at 1Legacy Healthcare | Fairfax

1Legacy Healthcare

Full-time|On-site|Fairfax

Join our team as a Junior Software Engineer and contribute to the advancement of innovative technologies that underpin critical defense and intelligence services in our nation. In this role, you will collaborate closely with distinguished clients to create solutions that empower them to execute vital national security missions effectively.

Nov 5, 2020

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Water Engineer and Life Cycle Assessment Analyst

erg

Full-time|On-site|Fairfax, VA

Join our dynamic team as a Water Engineer and Life Cycle Assessment (LCA) Analyst at erg. In this pivotal role, you will be responsible for analyzing water resource management strategies and conducting life cycle assessments to evaluate environmental impacts. Your expertise will contribute to sustainable solutions that promote efficient water use and environmental stewardship.

Apr 11, 2026

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Senior Frontend Engineer

MyStudio

Full-time|On-site|Fairfax, VA

MyStudio offers a cutting-edge software-as-a-service suite tailored for fitness, martial arts, and other membership-based businesses. Our innovative platform empowers studio owners by automating their customer engagement processes, ultimately increasing their revenue and freeing up valuable time for them to focus on their passion.We are on the lookout for an exceptionally talented Senior Frontend Engineer to join our vibrant development team. In this pivotal role, you will design and develop user interface components utilizing React.js principles and workflows. You will work collaboratively with cross-functional teams to define, design, and deploy new features, ensuring our applications deliver outstanding performance, quality, and responsiveness. If you have a passion for crafting high-quality, scalable, and user-focused frontend solutions, we can't wait to meet you!

Mar 1, 2026

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Senior Citrix Engineer

usm2

Full-time|On-site|Fairfax

Join our dynamic team at usm2 as a Senior Citrix Engineer. In this role, you will be responsible for designing, implementing, and maintaining Citrix environments to ensure optimal performance and security. You will collaborate with cross-functional teams to deliver innovative solutions while continuously improving our infrastructure.

Apr 19, 2016

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Platform Engineer at oteemoinc | Fairfax

oteemoinc

Full-time|On-site|Fairfax

We are seeking a highly skilled Platform Engineer to join our dynamic team at oteemoinc. In this role, you will be responsible for designing, implementing, and maintaining scalable platforms that enhance our operational capabilities. You will work closely with cross-functional teams to ensure the reliability and efficiency of our systems.

Mar 31, 2026

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Senior Azure Systems Engineer (GCC High / CMMC)

ERG

Full-time|On-site|Fairfax, VA

ERG, a prominent research and consulting firm, offers extensive support to federal, state, and commercial clients. Our multidisciplinary teams possess nationally recognized expertise in engineering, science, economics, public health, information technology, and communications. We are committed to hiring top talent and fostering a dynamic and flexible work environment that promotes career development.We are currently seeking a talented Senior Azure Systems Engineer with a minimum of seven years of experience in cloud systems engineering. This role is critical in supporting and enhancing our robust, enterprise-level cloud environment, specifically focusing on Azure and Office 365. Candidates must have at least three years of hands-on experience in GCC High environments or supporting infrastructures compliant with NIST SP 800-171 (CMMC Level 2), ensuring adherence to stringent security, compliance, and operational standards.As a Senior Azure Systems Engineer, you will be instrumental in the complete lifecycle of our Azure infrastructure, which includes analysis, architecture, planning, implementation, deployment, optimization, and troubleshooting. You will play a vital role in maintaining a secure, resilient, and scalable cloud ecosystem that underpins our mission-driven work.The ideal candidate is a collaborative problem-solver with both deep technical knowledge and a proactive approach. They thrive on complex challenges, communicate effectively with clients and colleagues, and exhibit a continuous desire to learn, innovate, and stay ahead of evolving cloud technologies.

Feb 11, 2026

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Senior Scientist/Engineer at ERG | Fairfax, VA

ERG

Part-time|On-site|Fairfax, VA

ERG seeks a Senior Scientist/Engineer to join the team in Fairfax, VA. This role supports research and consulting projects for the U.S. Environmental Protection Agency and other clients, with a focus on hazardous waste site characterization and the evaluation of remedial alternatives. Work may span both federal and non-profit organizations. What you will do Contribute to research efforts addressing hazardous waste sites Assess remedial alternatives for environmental projects Work closely with multidisciplinary teams at ERG Support projects for federal and non-profit clients Location This position is based in Fairfax, VA.

Apr 24, 2026

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DevOps Engineer | IT Consulting and Staff Augmentation

ProSidian Consulting

Full-time|On-site|Fairfax

ProSidian is on the lookout for a skilled DevOps Engineer to join our team for Development and Implementation [GMU0016015]. This role is focused on delivering top-notch Information Technology solutions within an Exempt 1099 Contract framework, specifically targeting the Government and Public Services Sector across the Mid Atlantic Region, particularly in Fairfax, VA.We are particularly interested in candidates with a strong background in Education and Academia, particularly those who can support our partnership with George Mason University (GMU). This opportunity encompasses both Contract Contingent and Contract W-2 positions, with potential for conversion to full-time employment with ProSidian.JOB OVERVIEWIn your role as a DevOps Engineer, you will be pivotal in designing, building, and delivering scalable IT solutions that yield measurable outcomes for our clients. This position emphasizes human capital solutions, providing you the opportunity to be at the forefront of IT consulting within the Education and Academia Sector.RESPONSIBILITIES AND DUTIESBuild and manage CI/CD pipelines to streamline development processes.Automate infrastructure provisioning to enhance operational efficiency.Monitor system health and scalability to ensure optimal performance.

Oct 10, 2025

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Consulting Engineer | Development and Implementation

ProSidian Consulting

Full-time|On-site|Fairfax

ProSidian Consulting is actively seeking a talented Consulting Engineer specializing in Development and Implementation [GMU0011010] to join our Information Technology team. This role is offered on an Exempt 1099 Contract basis, with no overtime pay, and is contingent upon a contract located CONUS - Fairfax, VA, serving the Mid-Atlantic region. The focus will be on delivering strategic Human Capital Solutions for Government and Public Services sectors, particularly supporting the City of Charlotte (COC).We are looking for candidates with a strong educational background and experience in the Education and Academia sector, particularly with functional and technical expertise to enhance our professional services engagement for esteemed clients such as George Mason University (GMU). While this position is initially contract-based, ProSidian reserves the right to convert it to a full-time W-2 position in the future.JOB OVERVIEWYour primary responsibility will be to provide exceptional consulting services as a Consulting Engineer in the Education and Academia sector, focusing on Human Capital Solutions for clients like GMU. This position will be based in Fairfax, VA, and will involve delivering scalable IT solutions that drive measurable outcomes.RESPONSIBILITIES AND DUTIESDesign, configure, and support infrastructure and systems.Troubleshoot complex IT issues to ensure system reliability.Implement necessary upgrades, patches, and integrations efficiently.Collaborate with platforms such as M365, Splunk, and VMware to optimize performance.

Oct 9, 2025

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Linux Software Engineer - Modernizing Software Infrastructure

Rampant Technologies

Full-time|On-site|Aurora, CO, Fairfax, VA, Sarasota, FL

Overview Join us at Rampant Technologies as a skilled Linux Software Engineer! In this pivotal role, you will contribute to multi-location projects aimed at modernizing and optimizing our software infrastructure. Your expertise will be crucial in migrating existing applications and developing innovative solutions within containerized environments and cloud platforms. Key Responsibilities Lead the migration of legacy applications to modern architectures. Develop and deploy new software projects in cloud environments. Collaborate with cross-functional teams to enhance software performance and reliability. Implement best practices for security and scalability in software development. Participate in code reviews and contribute to team knowledge sharing.

Apr 11, 2026

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Cyber Security Engineer at Rampant Technologies | Fairfax, VA

Rampant Technologies

Full-time|On-site|Fairfax, VA

Job SummaryThe Cybersecurity Engineer (CSE) at Rampant Technologies plays a pivotal role within our dedicated team, reporting directly to the Principal Engineer. The CSE is responsible for delivering cutting-edge cybersecurity solutions aligned with our organization's strategic objectives.Essential Duties & ResponsibilitiesAct as a Subject Matter Expert (SME) for problem identification, diagnosis, and resolution.Develop and implement best practices for processes and standards to enhance system performance.Conduct vulnerability assessments utilizing standardized tools (e.g., Nessus, DISA STIGs) and execute necessary configuration updates to comply with security mandates.Monitor and manage actions associated with Assessment and Authorization (A&A) activities as outlined in the Plan of Actions and Milestones.Perform system hardening on operational systems, Commercial Off-The-Shelf (COTS) products, and open-source applications.Validate best practices in penetration testing, configuration analysis, and overall security measures.Prepare comprehensive security assessment documentation to validate implemented security controls, supporting the A&A testing process.Generate and maintain security accreditation artifacts associated with the Risk Management Framework (RMF) process, including but not limited to the Security Requirements Traceability Matrix, Security Plans, Certification Test Plans, and Continuous Monitoring Plans.Ensure timely updates in the accreditation database.Provide technical guidance emphasizing information security architecture.

Sep 18, 2025

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Aviation Architectural Project Manager

Woolpert

Full-time|$101.2K/yr - $126.5K/yr|On-site|Fairfax, VA

Join us in advancing the world through innovative solutions.Woolpert is a distinguished, globally recognized leader in architecture, engineering, and geospatial services. We merge design excellence with state-of-the-art technology to provide unparalleled value to our clients. Our team is driven by passion and dedicated to nurturing the next generation of industry leaders. As a certified Great Place to Work ®, Woolpert fosters a culture of progress and innovation, creating limitless opportunities for career development.Position OverviewWoolpert is actively seeking an Architectural Aviation Project Manager to become a vital part of our dynamic Aviation Architecture team located in the Northern Virginia/Washington D.C. area.Please note, we are unable to offer visa sponsorship for this position. Candidates must already possess work authorization in the United States.

Feb 10, 2026

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Clean Air Act Engineer

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