Jobs in the United States

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Senior Content Strategy Manager
Robert Half
Remote, United States
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Continuous Improvement and Automation: Improve repeatability through standardized checklists, configuration controls, data validation, scripting, and automation of reconciliation or…
Added 1 min ago
Chief Information Security Officer (CISO)
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DIRECTOR OF WAREHOUSE MANAGEMENT
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- $120,000 to $170,000 USD / year
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Director of Operations
AnswersNow Inc
Remote, United States
- AI and Automation Expertise: Proven experience deploying AI agents or workflow automation within a live operation, with measurable improvements in capacity, speed, or quality.
Added 2 mins ago
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Chemical R&D Internship (Winter / Summer / Co-op)
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- $30 to $45 USD / hour
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System Director of Technology Operations and Governance
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Principal Technical program Manager, WorkSpaces Applications
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Software Development Engineer, US Amazon Dedicated Cloud Security
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…Security Engineering team to support the development of tools and automation in support of Amazon Dedicated Clouds (ADCs) and Cleared…
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Software Development Engineer, US Amazon Dedicated Cloud Security
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Sr Regulatory Operations Manager
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…FDA requirements and collaborate on process, technology and automation improvements to enhance efficiency, compliance and…
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This role is contributing to the Automation Process Control Platform (AUPCP) globally
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…knowledge of vehicle electrical and mechanical systems, test automation capability, and experience with dSPACE HIL…
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Business Analytics Lead - Real Estate Market Analytics
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PA · Chicago, IL · East Brunswick, NJ · Cleveland, OH
Leads scalable analytical solution design using advanced automation, data tools, and human-in-the-loop validation.
Added 6 mins ago
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Senior Data Engineer
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- $91,700 to $163,700 USD / year
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Sr Director, Product - Payment Integrity - Remote
UnitedHealth Group
Eden Prairie, MN
- $159,300 to $273,200 USD / year
area, you will be required to work in the office a minimum of four days per week
Added 6 mins ago
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Manager of Business Applications
SAN DIEGO WORKFORCE PARTNERSHIP INC
San Diego, CA
- $108,031 to $146,972 USD / year
Identify opportunities for automation and process optimization through effective use of technology and business applications.
Added 8 mins ago
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Senior Software Engineer
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Remote, United States
- $109,600 to $164,400 USD / year
Experience improving testing and validation automation, production availability, conversion automation, distributed computing, and large-scale system design.
Added 8 mins ago
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Senior Engineer Core Infrastructure
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Salt Lake City, UT · Washington, DC · Orlando, FL · Long Island City, NY
- $105,600 to $150,400 USD / year
Strong knowledge of DevOps practices and tools such as continuous integration (CI)/continuous delivery (CD), Git, Jenkins, Ansible, and Terraform for infrastructure automation.
Added 9 mins ago
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Senior AI Engineer
Expression
Shirlington, VA
- $180,000 to $210,000 USD / year
9+ years of professional experience in software engineering, AI engineering, or AI test automation, including substantial recent hands-on experience developing, integrating, or evaluating…
Added 10 mins ago
Global Custody Senior Tax Strategist
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Added 10 mins ago
Senior Terrestrial Mechanical Design Engineer, Controls
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Added 10 mins ago
Senior Terrestrial Automation & Controls Engineer
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Added 11 mins ago
Senior Technical Program Manager, SOX Control
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United States
Automation candidates are identified and delivered, and manual evidence collection and review effort measurably declines.

Expression

Senior AI Engineer

Shirlington, VA, United States

$180,000 to $210,000 USD / year

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Job details

Pay: $180,000 to $210,000 USD / year
Posting language: English
Posted: Nov 11, 2026

Original job description

Expression is seeking experienced Senior AI Engineers to design, develop, integrate, and evaluate advanced Artificial Intelligence (AI) and Large Language Model (LLM) capabilities supporting the Department of Homeland Security (DHS). This position will support the implementation of secure, mission-focused AI applications within the DHS AI environment. The Senior AI Engineers will develop and integrate multi-agent AI workflows, retrieval-augmented generation (RAG), intelligent document-processing capabilities, and AI evaluation frameworks to support investigative analysis, information retrieval, report generation, and human decision support. We are seeking hands-on engineers with expertise in one or more of three technical areas:

Multi-agent orchestration and model integration
RAG and AI-powered application development
AI assurance, evaluation, and observability

The ideal candidate has a strong software engineering foundation, experience delivering enterprise AI applications, and the ability to translate complex technical requirements into secure, reliable, maintainable software. You will collaborate with AI architects, data engineers, and Government stakeholders to build, test, and improve production-quality AI capabilities within an established enterprise environment. Security Clearance: Secret clearance required with eligibility for TS/SCI. Location: Shirlington, VA Required Qualifications

Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, Data Science, Artificial Intelligence, or a related technical field, or equivalent relevant professional experience.
9+ years of professional experience in software engineering, AI engineering, or AI test automation, including substantial recent hands-on experience developing, integrating, or evaluating enterprise AI applications.
Demonstrated experience building, deploying, or evaluating LLM-powered and generative AI solutions in enterprise or production-oriented environments, with direct responsibility for implementation rather than solely research, experimentation, or architectural planning.
Strong Python programming and debugging skills, including backend development, RESTful APIs, asynchronous programming, modular application design, and automated testing. Experience with FastAPI, Pydantic, asyncio, or comparable technologies.
Demonstrated hands-on expertise in at least one of the following AI engineering specializations:

•

Multi-Agent Orchestration & Model Integration: Developing multi-agent AI applications using LangGraph, LangChain, Semantic Kernel, AutoGen, or comparable frameworks; implementing model/tool integrations, structured agent handoffs, stateful workflows, prompt management, and bounded execution.
Grounded AI Applications & RAG: Designing and implementing RAG pipelines, document processing, source-grounded generation, prompt/output validation, citation handling, and AI-assisted document generation or human-reviewed workflows.
AI Assurance, Evaluation & Observability: Developing automated LLM evaluation frameworks, regression suites, model reliability tests, adversarial testing, prompt-injection defenses, and application observability capabilities.
Experience integrating AI applications with enterprise data platforms, APIs, or retrieval services, including secure access to structured or unstructured data.
Experience designing and implementing secure AI applications, including authentication, authorization, permission-aware data access, sensitive-data handling, and appropriate human oversight.
Experience with LLM application evaluation and reliability, including response quality, factual grounding, hallucination mitigation, error handling, and model performance measurement.
Experience with modern software engineering practices, including Git, code reviews, CI/CD pipelines, automated testing, and software configuration management.
Experience developing or deploying cloud-native or containerized applications using Docker, AWS, Azure, Kubernetes, or comparable technologies.
Demonstrated ability to translate technical requirements into production-quality AI software components, integration designs, test cases, and engineering documentation.
Strong analytical, troubleshooting, and communication skills, including the ability to collaborate with AI architects, data engineers, and technical stakeholders to resolve complex integration challenges.

Preferred Qualifications

Experience integrating AI applications with Palantir, Databricks, Elasticsearch, or comparable governed enterprise data platforms.
Experience implementing Responder–Evaluator–Reporter architectures, multi-model ensembles, model comparison, or structured AI output verification.
Experience with LLMOps platforms, prompt/model version management, evaluation tooling, and reproducible AI release processes.
Experience supporting Federal Government, Department of Defense, Intelligence Community, Department of Homeland Security, or similarly regulated environments.
Familiarity with Government cybersecurity, privacy, accessibility, data governance, and software authorization requirements.
Experience adapting existing AI algorithms, research prototypes, or software components into operational enterprise applications.
Experience supporting technical demonstrations, Government acceptance testing, operational pilots, or production AI system sustainment.

Benefits:

Expression offers competitive salaries and benefits, such as:

401k matching
PPO and HDHP medical/dental/vision insurance
Education reimbursement up to $10,000/yr
Complimentary life insurance
Generous PTO and 11 days of holiday leave
Commuter Benefits Plan

About Expression:

Founded in 1997 and headquartered in Washington DC, Expression provides data fusion, data analytics, AI/ML, software engineering, information technology, and electromagnetic spectrum management solutions to the U.S. Department of Defense, Department of State, and national security community. Expression’s culture focuses on creating immediate and sustainable value for our clients via agile delivery of tailored solutions built through constant engagement with our clients. Expression was ranked #1 on the Washington Technology 2018's Fast 50 list of fastest-growing small business Government contractors and a Top 20 Big Data Solutions Provider by CIO Review. We make sure to provide everyone with the tools and opportunities to grow while working on some of the newest technologies in the industry. We get excited about celebrating our professionals' milestones, accomplishments, promotions, overcoming challenges, and many other aspects that make an engaging collaborative environment. Equal Opportunity Employer/Veterans/Disabled Expression is an Equal Opportunity Employer. If you require a reasonable accommodation during the application or interview process, please submit your request to our Human Resources department through the application portal.

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Jobs in the United States