Lead Accessibility Engineer jobs in Mclean – Browse 101 openings on RoboApply Jobs

Lead Accessibility Engineer jobs in Mclean

Open roles matching “Lead Accessibility Engineer” with location signals for Mclean. 101 active listings on RoboApply Jobs.

101 jobs found

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companyAppian logo
Full-time|On-site|McLean, Virginia

As a Lead Accessibility Engineer at Appian, you will play a pivotal role in ensuring our software solutions are accessible to all users. Your expertise will guide the development teams in implementing best practices and standards for accessibility. You will collaborate with cross-functional teams to enhance user experience, driving initiatives that promote inclusivity and accessibility across our platform.

Apr 10, 2026
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companyStemXpert1 logo
Full-time|On-site|McLean

Join our dynamic team at StemXpert1 as an Identity and Access Management Specialist, where you will play a critical role in ensuring the security and integrity of our data systems. Your expertise will help us manage user access and protect sensitive information across our platforms.

Mar 30, 2015
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companyAppian Corporation logo
Lead Software Engineer

Appian Corporation

Full-time|On-site|McLean, Virginia

Role Overview Appian Corporation is looking for a Lead Software Engineer to join the team at headquarters in McLean, Virginia. This position focuses on building and maintaining the Appian platform, with a strong emphasis on speed, scalability, and adaptability to meet evolving customer needs. What You Will Do Address complex challenges related to scalability and flexibility across the platform. Work on the high-performance data layer, ensuring reliability and efficiency. Contribute to the cross-platform user interface and the design tools that support it. Collaborate closely with colleagues to deliver solutions that serve customers in new and effective ways. Work Location and Culture This role is based onsite at Appian's McLean, Virginia headquarters. In-person collaboration is central to Appian’s approach, and employees in this position are expected to work in the office five days a week. The company values teamwork and the sharing of ideas to achieve high standards and outstanding results together.

Apr 16, 2026
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companyRaft logo
Full-time|$210K/yr - $250K/yr|On-site|Mclean, Va

Location: McLean, VA (U.S. based). U.S. citizenship is required for all programs. All work must be performed within the continental United States. Role overview The Principal Engineering Lead works directly with Intelligence Community clients and acts as the primary technical liaison to the National Reconnaissance Office (NRO). This position leads a cross-disciplinary team, guiding both architecture and delivery for software and data platforms that support critical missions. The role shapes technical direction, influences design patterns, recommends tools, and provides advice on AI and machine learning strategies across several teams. What you will do Lead a cross-functional engineering team delivering solutions for Intelligence Community clients. Serve as Raft’s main technical representative to the NRO. Architect, build, and deploy software applications and data platforms at scale. Advise on design patterns, technology selection, and AI/ML approaches across teams. Work closely with problem solvers to address complex technical challenges. Requirements U.S. citizenship (required for all programs). Ability to work within the continental U.S. Extensive experience leading engineering teams and architecting large-scale solutions. Background in software application and data platform development, preferably for government or defense clients.

Apr 22, 2026
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companyaretum logo
Full-time|Remote|Remote — McLean, Virginia, United States

Join aretum as an Angular Frontend Web Developer with a strong emphasis on accessibility. In this fully remote role, you will be pivotal in designing and implementing user-friendly web applications that cater to all users, including those with disabilities. Your expertise in Angular, combined with a passion for inclusive design, will help us create digital experiences that are accessible and enjoyable for everyone.

Apr 3, 2026
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companyRaft logo
Full-time|$175K/yr - $225K/yr|On-site|McLean, VA ; Washington, D.C

Location: McLean, VA or Washington, D.C. This position requires U.S. citizenship and all work must be performed within the continental United States. Role overview The Lead AI/ML Engineer at Raft leads the design, development, and deployment of artificial intelligence and machine learning systems for mission-critical settings. This role oversees the entire lifecycle of AI solutions, from initial data ingestion and model training to production rollout. Close collaboration with engineers, data scientists, and product managers is part of daily work. This position connects advanced AI capabilities with practical applications. Working with both clients and internal teams, the Lead AI/ML Engineer ensures delivery of scalable, secure, and high-performance systems that operate in both cloud and edge environments. Key responsibilities Design and build AI and machine learning systems that integrate with high-performance data platforms. Manage the full lifecycle of machine learning solutions, from development through deployment and ongoing operation. Collaborate with cross-functional teams to deliver solutions that address client needs. Raft is a defense technology company based in McLean, VA, serving U.S. military and government agencies. The team specializes in advanced AI and machine learning, focusing on autonomous data fusion and Agentic AI. Raft delivers solutions for distributed data systems and large-scale platforms, developing digital tools that serve millions of Americans. The company emphasizes a cloud-native ecosystem and practical, transformative technology. Learn more at https://TeamRaft.com.

Apr 22, 2026
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company
Full-time|Hybrid|McLean, Virginia, United States

Tiger Analytics is seeking a highly skilled Lead Full Stack Engineer to become a pivotal member of our rapidly expanding advanced analytics consulting firm. Recognized as a trusted analytics partner for numerous Fortune 500 companies, we empower organizations to harness the full value of their data. Our expertise and leadership have earned accolades from leading market research firms, including Forrester and Gartner. We are on the lookout for exceptional talent to join our elite global analytics consulting team.In this role, you will leverage your extensive experience in modern web development, cloud-native architecture, and Generative AI (GenAI/LLM integration) to design and implement robust full-stack applications. Your hands-on expertise will encompass frontend, backend, and cloud platforms, ensuring the development of scalable, production-ready systems.This position demands technical depth, a strong architectural mindset, and the ability to thrive in a dynamic hybrid work environment.

Mar 19, 2026
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companyAretum logo
Full-time|Remote|Remote — McLean, Virginia, United States

Secret clearance requiredAbout AretumAretum is a forward-thinking organization dedicated to providing cutting-edge, technology-driven solutions to clients across the defense, civilian, and homeland security domains. Our teams thrive at the intersection of strategy, technology, and transformation, empowering agencies to tackle their most pressing challenges. We prioritize investing in our workforce and fostering a culture centered on collaboration, inclusion, and professional development.Job OverviewAs a federal consulting organization, Aretum requires its employees to handle Controlled Unclassified Information (CUI) and comply with relevant safeguarding and compliance protocols. All team members may also support proposal efforts, which may involve resume formatting, skill alignment summaries, participating in meetings, or contributing to solution development based on their expertise.Key ResponsibilitiesLead the development of data pipelines and platforms, including writing and reviewing high-quality production code.Oversee the complete delivery process for assigned pipelines and services.Design, enhance, and maintain ETL/ELT pipelines for large-scale data ingestion and transformation.Implement CI/CD practices and automated testing for data pipelines, ensuring integration tests, data validation, and release workflows are in place.Establish operational readiness for production data workflows.Optimize pipeline and storage performance and cost through tuning, partitioning, and right-sizing workloads within AWS GovCloud.Contribute to and apply modern data architecture patterns, including lakehouse methodologies.Support Department of Defense strategic initiatives and enterprise data modernization efforts through robust architectural implementation.Drive the creation and maintenance of data transformation roadmaps and technical documentation; assist with data maturity assessments and current-state analyses across various agency programs.Translate technical methodologies into clear, business-friendly frameworks and actionable recommendations.Collaborate with cross-functional teams and program offices to clarify data requirements, facilitate data-driven decision-making, and convert technical approaches into comprehensible business frameworks.Assist in delivering leadership priority initiatives (e.g., childcare forecasting, Military OneSource analytics, readiness dashboards) and design data solutions that effectively connect outreach efforts to program engagement and readiness outcomes for users with diverse technical expertise.

Mar 3, 2026
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companyAppian logo
Full-time|On-site|McLean, Virginia

At Appian, we embody the principles of Intensity and Excellence, which are central to our identity. We uphold high standards in all aspects of our work, ensuring that quality and care are at the forefront of our efforts. We tackle challenges with unwavering ambition and dedication, holding ourselves accountable to deliver exceptional results. Join our passionate team at Appian, where we strive to achieve remarkable outcomes together. As a Lead Software Engineer within our Foundational Infrastructure Group, you will play a pivotal role in re-architecting our platform for public cloud environments, enabling swift, reliable, and impactful changes. Your mission is to maintain our top-tier infrastructure, ensuring it is consistently available, responsive, and equipped to meet the diverse demands of a dynamic, high-performance development team. Collaborating within an agile, global team, you'll help transition our systems to a modern services architecture that facilitates the integration of microservices and containerization technologies.This position is based in our headquarters in McLean, VA. At Appian, we foster a culture of in-person collaboration, which we believe is essential to our mission of excellence. Employees in this role are expected to work in the office five days a week to enhance our culture and ensure that we thrive through shared ideas and teamwork. We believe that working together in the office offers more opportunities to celebrate our achievements with the exceptional people at Appian.

Feb 20, 2026
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company
Full-time|$185K/yr - $265K/yr|On-site|McLean, VA

At Agile Defense, we believe that proactive action shapes outcomes and that new challenges inspire innovative solutions. Our forward-thinking approach embodies an unwavering spirit and the courage to build for the future.Our mission is to deliver adaptive innovation that supports our nation’s most critical missions. We achieve this through the seamless integration of cutting-edge technologies, exceptional talent, and unmatched agility—a foundation built on speed, flexibility, and creativity to safeguard and enhance our nation's vital interests.Requisition #: 1107Job Title: Senior Solutions Engineering LeadSalary Range: indicative of total compensation $185K-$265KSUMMARYAgile Labs serves as the innovation powerhouse of Agile Defense, focused on swiftly developing, prototyping, and operationalizing next-gen capabilities for both our federal and commercial clients. From mission-specific GenAI assistants to DevSecOps pipelines and threat-informed cyber platforms, our Lab transforms ambitious ideas into scalable, field-ready solutions. Our multidisciplinary teams excel in research, design, engineering, and delivery, empowering clients to adopt state-of-the-art technology rapidly while adhering to the highest security and compliance standards.The Vice President of Solutions Engineering is responsible for establishing the technical vision and delivery framework for Agile Labs. This role merges hands-on architecture expertise with executive-level portfolio management. You will create strategic roadmaps for Applied AI, cloud-native applications, DevSecOps, and Cyber Defense offerings, leading distributed teams in translating these strategies into production systems. As the chief engineer, you will interact with C-level stakeholders, converting mission requirements into actionable backlogs and working prototypes, while authoring compelling technical proposals and white papers. Furthermore, you will foster a culture of experimentation, swiftly constructing prototypes that mitigate the risks associated with emerging technologies, including multimodal foundation models, autonomous agents, confidential compute, and software supply chain security. Internally, you will mentor engineering excellence among over 2000 employees through Community of Practice forums, Labs solutions, and enablement programs, ensuring our workforce stays ahead of industry trends.JOB DUTIES AND RESPONSIBILITIES· Define and uphold the solutions architecture framework and reference implementations for all Agile Labs service lines.· Lead opportunity shaping, technical capture, and proposal writing for new business, owning the end-to-end solution narrative.· Oversee delivery execution...

Aug 11, 2025
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companyCoreOne logo
Full-time|On-site|McLean, VA

CoreOne seeks an Authorization and Accreditation Lead based in McLean, VA. This role steers important compliance efforts and manages the full accreditation process for the organization. The Lead plays a key part in shaping strategies that help CoreOne meet regulatory requirements and maintain operational integrity. Responsibilities Coordinate and oversee all accreditation activities across the organization Develop and improve methods to support ongoing regulatory compliance Direct authorization protocols, ensuring accurate and consistent application Promote strong compliance practices that protect and advance CoreOne’s operations

Apr 27, 2026
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company
Full-time|On-site|McLean, VA

At Agile Defense, we believe that proactive engagement shapes outcomes, and that innovative challenges demand creative solutions. Our forward-thinking approach fuels our commitment to embracing change with resilience and the determination to build for the future.Our mission is to drive adaptive innovation that bolsters our nation's critical missions through the seamless integration of cutting-edge technologies, top-tier talent, and unmatched agility—utilizing a foundation of speed, flexibility, and ingenuity to enhance and safeguard our nation’s vital interests.Requisition #: 1393Job Title: Senior Agentic AI Technical LeadLocation: McLean, VAClearance and eligibility:· Active Secret clearance required (TS/SCI eligible preferred)· U.S. Citizenship required· Capability to operate within DoD IL5+ environments (e.g., Azure IL5, Google GovCloud), including support for expedited credentialing/facility clearance processes.Role Summary: We are in search of a Senior Technical Lead to act as the Technical Lead and Delivery Manager for a transformative Agentic AI Prototype initiative with the Chief Digital and AI Office (CDAO). This pivotal role will serve as the most senior full-stack engineer and architect on the program, converting government-defined mission goals into secure, production-ready AI agent functionalities delivered within DoD IL5+ cloud infrastructures. You will spearhead internal implementations, coordinate various non-traditional subcontractor teams, collaborate closely with the Government Product Owner, and be responsible for delivering accepted, operationally effective capabilities aligned with fixed-price milestones.Key Responsibilities:· Technical Leadership and Architectureo Translate mission outcomes and prioritized product backlog items into technical architecture, delivery plans, and sprint objectives.o Serve as the primary senior engineer/architect and main technical authority for agentic AI solutions, encompassing prompt engineering to intricate multi-agent workflows with tool utilization and logical branching.o Oversee end-to-end system design across secure cloud environments (Azure IL5, Google GovCloud), model inference services (Vertex AI, AWS Bedrock), and frontier AI SDKs (Gemini Enterprise, Anthropic for Gov, Grok Enterprise).o Direct development and integration of secure APIs, data pipelines (structured/unstructured), RAG/embeddings, and metadata catalog/platform (MCP) capabilities.o Ensure all solutions are architected to be ATO-ready, meeting the technical, administrative, and security controls necessary for production authorization.· Delivery Management and Agile Executiono Act as the sole accountable interface to the Government Product Owner...

Feb 2, 2026
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companydev2 logo
Full-time|On-site|McLean

Join dev2 as a Lead Full Stack Software Engineer, where you will leverage your expertise in Java, Python, Angular, and React to drive innovative solutions. You will be responsible for leading a dynamic team of developers, overseeing project lifecycles from conception to deployment, and ensuring the delivery of high-quality software products.Your role will involve collaborating with cross-functional teams to understand business requirements, design scalable architectures, and implement best practices in software development. If you are passionate about technology, thrive in a fast-paced environment, and want to make a significant impact, we would love to hear from you!

Dec 11, 2023
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companyStemXpert logo
Full-time|On-site|McLean

Join StemXpert as a Network Technical Lead, where you will play a pivotal role in overseeing and enhancing our network operations. In this dynamic position, you will lead a talented team, ensuring seamless connectivity and reliability for our clients.Your expertise in network architecture and troubleshooting will be crucial as you implement innovative solutions and maintain superior performance standards. This is an exciting opportunity to shape the future of our network infrastructure.

Jun 23, 2015
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companyRaft logo
Full-time|$150K/yr - $200K/yr|Remote|Remote, US; DMV; McLean, VA; Boston, MA; San Antonio, TX; Colorado Springs, CO; Tampa, FL; Honolulu, HI

Location: Remote (U.S.); DMV; McLean, VA; Boston, MA; San Antonio, TX; Colorado Springs, CO; Tampa, FL; Honolulu, HI Eligibility: U.S. citizenship required. All work must be performed within the continental United States. Raft delivers AI, machine learning, and data-driven solutions to U.S. military and government clients. The team specializes in autonomous data fusion, Agentic AI, distributed data systems, and building scalable platforms. Headquartered in McLean, VA, Raft partners with federal and public sector organizations to create digital solutions that reach millions of Americans, using design thinking and cloud-native technology. Role overview The Lead Principal MLOps Engineer plays a key part in supporting clients and collaborating with a team focused on complex, high-impact challenges. This position centers on building and maintaining mission-critical AI and data platforms for the Department of Defense. What you will do Work on platforms that process large volumes of real-time data from diverse sensors and operational sources. Transform raw data into actionable intelligence, supporting operators with timely decisions through mission applications and operational dashboards. Support a large-scale platform that manages billions of events daily, using low-latency data pipelines and cloud-native infrastructure. Advance the development of an end-to-end machine learning platform for model development, evaluation, deployment, monitoring, and lifecycle management across both cloud and constrained operational environments.

Apr 22, 2026
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companyusm2 logo
Full-time|On-site|McLean

Join usm2 as a Technical Lead, where you'll drive innovative projects and lead a talented team of engineers. Your expertise will guide the development of cutting-edge solutions and enhance our technical capabilities. We are looking for a leader who thrives in a collaborative environment and is passionate about technology and its applications.

Jul 20, 2016
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companyRaft logo
Full-time|$150K/yr - $200K/yr|On-site|McLean, VA

Location requirement: This position is open only to U.S. citizens and requires all work to be performed within the continental United States. Raft is a defense technology company based in McLean, VA. The team partners with U.S. military and government agencies to deliver AI/ML and data solutions, specializing in areas such as autonomous data fusion, Agentic AI, distributed data systems, and scalable platforms. Raft’s cloud-native products support federal and public sector clients and reach millions of Americans. Role overview The Lead Principal Software Engineer joins a collaborative team focused on building a data-driven product. This role covers both backend and frontend development, drawing on open source technologies including Kafka, Trino, DuckDB, and Superset. The main objective is to create seamless data interactions and empower users to generate meaningful data stories with the product. Key technologies Kafka Trino DuckDB Superset

Apr 22, 2026
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company360IT Professionals logo
Automation Lead Opportunity

360IT Professionals

Full-time|On-site|McLean

Join our dynamic team at 360IT Professionals as an Automation Lead. We are looking for an innovative and experienced individual to spearhead our automation initiatives, driving efficiency and productivity in our projects. You will be responsible for designing, implementing, and managing automation processes, ensuring high standards of quality and performance.

Apr 7, 2016
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companyusm2 logo
Full-time|On-site|McLean

Join usm2 as a Systems Administration Technical Lead, where you will spearhead our IT infrastructure initiatives. In this pivotal role, you will oversee system administration tasks and mentor a team of IT professionals. Your expertise will ensure our systems remain efficient, secure, and scalable to meet the growing demands of our business.

Aug 10, 2016
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companySlate Cleaning logo
Full-time|On-site|McLean, United States

Role Overview Slate Cleaning is hiring an Overnight Studio Cleaner & Lead in McLean, United States. This position covers overnight shifts and combines hands-on cleaning with team leadership. The role focuses on keeping studio facilities clean and well-maintained while guiding others to meet company standards. What You Will Do Clean and maintain studio spaces during overnight hours Monitor facility cleanliness and address issues as they arise Lead and support other cleaning staff on shift Help ensure a welcoming, orderly environment for clients

Apr 17, 2026

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