Jobs in the United States

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Added 4 mins ago
Manager Electronics Engineering 3
Northrop Grumman
San Diego
…innovative technologies to develop, design, produce, integrate, test, and sustain optimized product lines across the sector while providing a decisive advantage to the warfighter. Come be a…
Added 4 mins ago
Engineer Systems/Principal Engineer Systems (Performance Analysis) - AHT
Northrop Grumman
Huntsville
An NGC DS Systems Engineer performs technical planning, system integration, verification and validation, cost and risk, and supportability and effectiveness analyses for total systems.…
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
Senior Staff Radar Modeling Simulation & Analysis Systems Engineer
Northrop Grumman
Baltimore
…data from laboratory or flight tests, the verification and validation of simulation performance against flight test data, and formally verifying that the models meet specified…
Added 4 mins ago
Principal / Senior Principal Systems Engineer
Northrop Grumman
Los Angeles
…seeking a highly skilled Principal or Senior Principal Systems Engineer to join our team in Woodland Hills, CA. The ideal candidate will have a strong background in systems engineering…
Added 4 mins ago
Space TS/SCI Operations and Maintenance SEIT Lead (Level 5)
Northrop Grumman
Rolling Meadows
Must have an active U.S
Added 4 mins ago
Staff Engineer Systems
Northrop Grumman
McLean
Must have U.S
Added 4 mins ago
2026 Associate Electrical Engineering/ Electrical Engineering - Wallops VA
Northrop Grumman
New Church
Northrop Grumman Space Systems is looking for an Associate Electrical Engineer or Electrical Engineer (Level 1 or Level 2) to join our team in Wallops Island, VA. As an integral member of…
Added 5 mins ago
Principal Systems Engineer 3 /Sr. Principal Systems Engineer 4
Northrop Grumman
Oklahoma City
Northrop Grumman Aeronautics Systems is seeking a Principal Systems Engineer/Sr. Principal Systems Engineer to join our team of qualified, diverse individuals within our Systems Engineering…
Added 5 mins ago
Electrical Vehicle Prototype Development Engineer
ALTEN Technology USA
Long Beach, CA · Irvine, CA
As a Prototype Development Engineer, you will support the development, configuration, commissioning, maintenance, and test readiness of advanced Labcars, HIL benches, and related prototype…
Added 9 mins ago
Test Engineer
Actalent
Orange, CA
Job Title: Test EngineerJob DescriptionThe Test Engineer will play a pivotal role in the development and validation of new electromechanical products throughout the product development…
Added 9 mins ago
A
Electrical Engineer
Actalent
Gilbert, AZ
- $53 to $75 USD / hour
Develop engineering test procedures, validation plans, and verification documentation to ensure design compliance.
Added 10 mins ago
HIL System Engineer
Ford
Dearborn, MI · Dearborn
We are seeking a hands-on HIL System Engineer to support the development, integration, and validation of vehicle systems and features. In this role, you will help create and maintain…
Added 13 mins ago
GH
Senior Software Engineer
GE HEALTHCARE
Remote, United States
- $109,600 to $164,400 USD / year
As a Senior Software Engineer in GE HealthCare's Science & Technology organization, you will develop scalable, cloud-based software solutions that support healthcare innovation and digital…
Added 14 mins ago
E
Senior Data Engineer
Expression
Shirlington, VA
- $180,000 to $200,000 USD / year
Expression is seeking an experienced Senior Data Engineer to design, develop, and integrate secure enterprise data services supporting advanced Artificial Intelligence (AI) and Large…
Added 14 mins ago
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Senior AI Engineer
Expression
Shirlington, VA
- $180,000 to $210,000 USD / year
…architects, data engineers, and Government stakeholders to build, test, and improve production-quality AI capabilities within an established enterprise…
Added 19 mins ago
Head of Data Engineering
Texas Instruments
Dallas, TX
Engineer scalable data solutions using technologies such as Apache Iceberg, Spark, Trino, Databricks, and high-performance analytical databases.
Added 25 mins ago
Pharmaceutical Informaticist Analyst
Rochester General Hospital
Remote, United States
…to design an elegant solution and also fill the role of the engineer who wants to build a solution that works. Pharmacists tend to be very exacting. They typically don’t like to make…
Added 30 mins ago
Senior Sales Engineer- Microsoft (Remote)
Ingram Micro Inc
Remote, United States
Senior Sales Engineer- Microsoft Azure & Modern Work
Added 31 mins ago
Senior Software Engineer, Elixir
PDQ
Remote, United States
PDQ is seeking a Senior Software Engineer to help build and scale intelligent, autonomous systems that transform how users interact with our products. In this role, you will develop…
Added 31 mins ago
Technical Product Owner
Meijer Great Lakes LP
MI
Own release readiness with engineering and operations, including implementation plans, dependency validation, test evidence, production support readiness, rollback plans, communications,…
Added 31 mins ago
Software Engineer - Garmin Health
Garmin International, Inc.
Olathe, KS
We are seeking a full-time Software Engineer - Garmin Health at Garmin's U.S. headquarters in the Greater Kansas City area. As a member of the Garmin Health team, you will develop and…
Added 42 mins ago
Senior Analog Design Engineer
SiTime Corporation
AZ
SiTime is looking for a Senior Analog Design Engineer to join a talented analog design team developing advanced clock and timing products. You will lead the development of key circuit…
Added 43 mins ago
PCB Manufacturing Engineer
Actalent
Lake Forest, CA
Job Title: PCB Manufacturing EngineerJob DescriptionThe PCB Manufacturing Engineer supports printed circuit board assembly (PCBA) manufacturing operations and drives continuous improvement…
Added 45 mins ago
Design Services Principal Engineer
Theragenics Corp
North Attleboro, MA
The Principal Research and Development Engineer is a senior technical and hands-on role responsible for solving complex engineering problems and creating advanced research, modeling,…

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