Jobs in the United States

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Added 1 min ago
Senior Planner/Scheduler
Bechtel Corporation
Chandler, AZ
…improved the resiliency of the world's infrastructure, increased access to energy, resources, and vital services, and made the world a safer, cleaner…
Added 1 min ago
TL
Program Manager, GRC & AI Strategy
TransUnion LLC
Chicago, IL · Reston, VA · Crum Lynne, PA · White Plains, NY
- $142,500 to $237,500 USD / year
Lead a small team responsible for Cyber GRC reporting, performance metrics, data analysis, governance reporting, and executive communications.
Added 1 min ago
Executive Assistant to Vice President
Northrop Grumman
Baltimore
May at times take and transcribe dictation, minutes, and accurately enter data
Added 1 min ago
Senior Staff Radar Modeling Simulation & Analysis Systems Engineer
Northrop Grumman
Baltimore
Utilize Modeling, Simulation, Experimentation, and Analysis (MSE&A) of advanced systems using C++ object-oriented design, advanced data structures and test-driven development.
Added 1 min ago
Principal Instrumentation Mechanical Design Engineer
Northrop Grumman
Melbourne
Must have an understanding of application and implementations of flight test mechanical installations · Must have knowledge or experience navigating MIL-STD documents and specifications
Added 1 min ago
Sr Principal CIDO IT Program Manager
Northrop Grumman
Palmdale
Candidates must have the ability to obtain access to Special Programs as a condition of continued employment
Added 1 min ago
Principal/Sr. Principal Tooling Engineer Level 3/4 (A-shift)
Northrop Grumman
Clearfield
Ability to obtain and maintain Special Program Access per company and business needs
Added 1 min ago
NG
2027 Manufacturing Engineer Intern- Commerce CA
Northrop Grumman
Commerce
- $21.5 to $48 USD / hour
Aid in projects related to process standardization, shop floor data collection
Added 1 min ago
Principal/Sr Principal Aeronautical Flight Test Engineer - Loads & Dynamics
Northrop Grumman
Edwards AFB
Must have an active US Government Secret clearance (with a background investigation within the past 6 years or enrolled into Continuous Evaluation)
Added 1 min ago
Sr Principal Engineer Industrial
Northrop Grumman
San Diego
Communicates requirements planning and systems framework with IT, ERP, business analytics, and data science teams
Added 1 min ago
Principal / Sr. Principal Electrical Engineer - 20703
Northrop Grumman
Roy
Proactively communicate across teams to ensure critical data is identified for collection.
Added 1 min ago
Tooling/Principal Tooling Engineer Level 2/3 (B-shift)
Northrop Grumman
Clearfield
Ability to obtain and maintain Special Program Access per company and business needs
Added 1 min ago
NG
2027 Intern Engineer - Product Support
Northrop Grumman
Oklahoma City
- $17.5 to $39.25 USD / hour
Analyze fleet performance data, discrepancy reports, and failure trends for B‑2 subsystems.
Added 1 min ago
Staff Electro-Optics Infrared (EO/IR) Engineer
Northrop Grumman
Melbourne
Must have an active US Government Secret Clearance (with a background investigation within the past 6 years or enrolled into Continuous Evaluation)
Added 1 min ago
Staff Mechanical Design Engineer
Northrop Grumman
Melbourne
Gathering of data, requirements development, interfacing with suppliers, and performing basic stress and tolerance analysis
Added 2 mins ago
Principal / Sr. Principal Electromechanical Engineer - Flight Test ECS
Northrop Grumman
Edwards AFB
Must have an active US Government Secret clearance (with a background investigation within the past 6 years or enrolled into Continuous Evaluation)
Added 2 mins ago
Principal Systems Engineer 3 /Sr. Principal Systems Engineer 4
Northrop Grumman
Oklahoma City
Solicit input from various stakeholders and team members to synthesize data and communicate findings and recommendations clearly to both technical and non-technical audiences.
Added 2 mins ago
Systems Integration & Test Engineers (SI&T) - 2nd Shift
Northrop Grumman
Baltimore
…activities of RF sensor systems. What you’ll get to do: As the lead developer of radars, COMMS, and SIGINT for some of the most advanced systems in the U.S. arsenal, Northrop Grumman…
Added 2 mins ago
Principal Aeronautical Engineer - Flight Test VMS
Northrop Grumman
Edwards AFB
Must have an active US Government Secret clearance (with a background investigation within the past 6 years or enrolled into Continuous Evaluation)
Added 2 mins ago
On-Orbit Test Astrodynamics Engineer- 15K Sign-On-Bonus
Northrop Grumman
Colorado Springs
This position is contingent upon the candidate obtaining final clearances and program access(es) within a reasonable period of time as determined by the company.
Added 2 mins ago
E
EverPro - SEO Strategist for PLG Growth & AI Visibility (Remote, US)
Evercommerce
Remote, United States
- $90,000 to $100,000 USD / year
Identify and close gaps between organic landing pages and the in-product experience, and feed search intent data back to product and lifecycle teams
Added 2 mins ago
E
EverHealth - Sr Salesforce Administrator / Architect (Remote, US)
Evercommerce
Denver, CO
- $110,000 to $130,000 USD / year
Candidates based in the Chicago area will work hybrid, meeting with the team in person 1–2 days per week
Added 2 mins ago
Sr Principal Engineer Aeronautical - Flight Test VMS
Northrop Grumman
Edwards AFB
Must have an active US Government Secret clearance (with a background investigation within the past 6 years or enrolled into Continuous Evaluation)
Added 2 mins ago
Program Planning Manager - Level 2
Northrop Grumman
Redondo Beach
Fortify team planning data, logical sequencing of activities, and establishment of activity durations.
Added 3 mins ago
Retail Sales Leader, Grocery - CINCINNATI
Mars Wrigley Conf. (MCNA)
United States
…actionable plans for the region and directing the team in the use of data insights to achieve these plans while ensuring alignment with account strategy, business objectives, and selling…

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