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Network Engineer II
LEIDOS, INC.
Shiloh, IL
The Leidos Digital Modernization Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for a Network Engineer. The Network Engineer will perform sustainment,…
Added 1 min ago
Senior Mechanical Engineer, Space Hardware
IRPI
Wilsonville, OR
…work spans air revitalization and CO₂ removal, water and waste management, condensing heat exchangers, propellant management devices, lunar lander components, and spacesuit subsystems. We…
Added 1 min ago
Test Engineer II
Blue Origin Personnel, LLC
United States
Ability to perform data analysis and establish dispositions or recommendations based on system performance.
Added 2 mins ago
Senior Systems Engineer
The Mitre Corporation
Huntsville, AL
Must be based in Huntsville, AL or able to relocate to Huntsville · Must have an active Secret U.S Government issued Security Clearance
Added 2 mins ago
II
Process Engineer
Ingredion Incorporated (NA-US)
Bedford Park, IL
- $84,400 to $112,533.33 USD / year
…improvement within a manufacturing environment. The Process Engineer partners across operations, maintenance, and engineering teams to improve safety, quality, productivity, reliability,…
Added 2 mins ago
Applied AI Health System Engineer [Health Services-Provider] – Senior Manager
PricewaterhouseCoopers Advisory Services LLC
NY · Raleigh, NC · Charlotte, NC · Chicago, IL · Cincinnati, OH · Cleveland, OH · Columbia, SC · Columbus, OH · Dallas, TX · Baltimore, MD · Richmond, VA · Rochester, NY · Rosemont, IL · Boston, MA · St. Louis, MO · Salt Lake City, UT · San Antonio, TX · Seattle, WA · Spartanburg, SC · Stamford, CT · Tampa, FL · Atlanta, GA · Toledo, OH · Austin, TX · Tulsa, OK · Washington, DC · Denver, CO · Des Moines, IA · Detroit, MI · Buffalo, NY · Florham Park, NJ · Fort Worth, TX · Greensboro, NC · Hartford, CT · Houston, TX · Grand Rapids, MI · Jacksonville, FL · Kansas City, MO · Las Vegas, NV · Little Rock, AR · Louisville, KY · Birmingham, AL · Fayetteville, AR · Melville, NY · Miami, FL · Milwaukee, WI · Minneapolis, MN · Nashville, TN · New Orleans, LA · Oklahoma City, OK · Philadelphia, PA · Phoenix, AZ · Pittsburgh, PA · Portland, OR
What You Must Have
Added 3 mins ago
Principal Engineer - Field Safety & Emergency Response
GLOBALFOUNDRIES U.S. INC.
NY
…construction safety and contractor safety programs. This Principal Engineer - Field Safety & Response will be provided with formal instruction covering site safety requirements and job…
Added 4 mins ago
Manager Electronics Engineering 3
Northrop Grumman
San Diego
The successful candidate will have personally executed hardware and electrical engineering activities as an engineer and led teams of hardware engineers, while operating as a…
Added 4 mins ago
Principal / Senior Principal Systems Engineer
Northrop Grumman
Los Angeles
…Systems (NGMS) is seeking a Principal or Senior Principal Systems Engineer to join our team based in Woodland Hills, CA. The ideal candidate will have a strong background in…
Added 4 mins ago
Electrical Systems Engineer
Northrop Grumman
Stafford
Northrop Grumman Defense Systems is seeking an Electrical Systems Engineer to work for our Whisper program at a government customer site in Stafford, Virginia.
Added 4 mins ago
Principal/Sr. Principal Tooling Engineer Level 3/4 (A-shift)
Northrop Grumman
Clearfield
Northrop Grumman is seeking an Principal/Sr. Principal Tooling Engineer Level 3/4 - Integration & Offload is responsible for providing designs for industrial machinery and equipment, tools,…
Added 4 mins ago
Test Engineer / Principal Test Engineer - Lab Manager
Northrop Grumman
Baltimore
Northrop Grumman Mission Systems' Baltimore and Partnered Sites (BaPs) division is seeking a Test Engineer Lab Manager in Baltimore, MD. This position supports laboratory operations, test…
Added 4 mins ago
Sr Principal Engineer Industrial
Northrop Grumman
San Diego
…multi-domain systems and technologies. Our differentiated battle management and Cyber solutions deliver timely, mission-enabling information and provide superior situational awareness and…
Added 4 mins ago
Staff Engineer Systems
Northrop Grumman
McLean
Must have U.S
Added 4 mins ago
Northrop Grumman (SkillBridge) - Principal Network Cloud Communications
Northrop Grumman
Redondo Beach · Melbourne · Linthicum Heights · Rolling Meadows
…design, integration, security, sustainment, and operational performance of classified network environments spanning Microsoft Azure – Government Secret Cloud and AWS Government Secret…
Added 4 mins ago
Tooling/Principal Tooling Engineer Level 2/3 (B-shift)
Northrop Grumman
Clearfield
Northrop Grumman is seeking an Tooling/ Principal Tooling Engineer Level 2/3 - Integration & Offload is responsible for providing designs for industrial machinery and equipment, tools,…
Added 4 mins ago
NG
2027 Electromechanical Engineer Intern - Rolling Meadows IL
Northrop Grumman
Rolling Meadows
- $25.5 to $38 USD / hour
Support structural and thermal analyses to verify durability, strength, and temperature‑control performance.
Added 4 mins ago
NG
2027 Intern Engineer - Product Support
Northrop Grumman
Oklahoma City
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Analyze fleet performance data, discrepancy reports, and failure trends for B‑2 subsystems.
Added 5 mins ago
Noise Vibration and Harshness Engineer Level 2/3
Northrop Grumman
Sunnyvale
Northrop Grumman Mission Systems is seeking an Noise Vibration and Harshness Engineer Level 2 or 3 to support the development and ongoing support of world-class US Navy machinery (turbines,…
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Sentinel Project Change Engineering Section Manager 2 - 14050-1
Northrop Grumman
Roy
…company policy. Key FHR responsibilities will be personnel performance management, process familiarization and training for Section members, as well as staffing of roles on projects. You…
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Principal Engineer Supplier Quality
Northrop Grumman
Baltimore
Keep management apprised of supplier performance, quality status, and risks.
Added 5 mins ago
Staff Systems Engineer - TRMC Systems Engineering Lead
Northrop Grumman
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Must have experience leading a team of 10+ individuals in a technical environment · Must have the ability to obtain and maintain Special Access Program (SAP) clearance within a reasonable amount of time as determined by business needs
Added 5 mins ago
Principal Subsystems Engineer
Northrop Grumman
San Diego
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Added 5 mins ago
Principal/Sr Principal Electrical Engineer - 20350 & 20351
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Northrop Grumman Defense Systems is seeking an Principal/ Sr. Principal Electrical Engineer in support of the Sentinel program. This position is located: Roy, UT.
Added 4 mins ago
E
Lead Software Engineer
Evercommerce
Denver, CO
- $203,798 USD / year
Must have U.S

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