Jobs in the United States

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Added 3 mins ago
RF Device Engineer
The Aerospace Corporation
El Segundo, CA
…macroscopic down to the atomic scale. MTD is looking for an RF Device Engineer (Sr. MTS – Microelectronics/Semiconductor Engineering) to support investigations of electronics reliability…
Added 50 mins ago
Customer Service Engineer (VA ESOM IRP)
Kentro
Bedford, MA
Must have experience conducting routine system administration tasks and logging data in system admin logs
Added 50 mins ago
Customer Service Engineer (VA ESOM)
Kentro
Cincinnati, OH
Must have experience conducting routine system administration tasks and logging data in system admin logs
Added 1 hour ago
Project Manager - Multifamily Construction - Washington, DC
Mountain Management Group
Washington, DC
Assistant Project Manager, Project Manager, APM, PM, Project Engineer, Multifamily, Multi Family, Multi-Family, Construction, Apartments, Condos,
Added 1 hour ago
Assistant Project Manager - Multifamily Construction - Washington, DC
Mountain Management Group
Washington, DC
Additional Opportunities: Assistant Superintendent, Assistant Project Manager, Project Manager, Superintendent, Project Engineer, Vice President of Construction, Project Executive, Vice…
Added 1 hour ago
TI
Senior Staff SI/PI Engineer
TYLsemi, Inc.
San Jose, CA
- $204,000 to $250,000 USD / year
As an SI/PI, Package and Power Delivery Engineer at Tylsemi, you will own signal integrity, power integrity, and package/PDN co-design across chip, package, and board interfaces. You will…
Added 2 hours ago
AI Systems Engineer - AI Platforms - Manager
EY
Saint Louis, MO
To qualify you must have
Added 2 hours ago
AI Systems Engineer - AI Platforms - Manager
EY
Jefferson City, MO
To qualify you must have
Added 2 hours ago
AI Systems Engineer - AI Platforms - Manager
EY
Kansas City, MO
To qualify you must have
Added 2 hours ago
E
Fraud Analytics Engineer
Experian
United States
- $103,669 to $179,693 USD / year
We're looking for an Analytics Engineer that operates at the intersection of data engineering, infrastructure, and machine learning.
Added 2 hours 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 2 hours ago
E
Senior AI Engineer
Expression
Shirlington, VA
- $180,000 to $210,000 USD / year
Added 2 hours ago
Senior Terrestrial Mechanical Design Engineer, Controls
Varda Space Industries
El Segundo, CA
The Senior Mechanical Design Engineer builds bespoke test infrastructure that qualifies spaceflight hardware for orbit. They design, build, and own sophisticated ground support equipment…
Added 2 hours ago
Senior Terrestrial Automation & Controls Engineer
Varda Space Industries
El Segundo, CA
The Senior Automation & Controls Engineer builds bespoke test infrastructure that qualifies spaceflight hardware for orbit. They design, build, and own sophisticated ground support…
Added 3 hours ago
Senior Motor Design Engineer
BEI North America LLC
Vista, CA
The Senior Motor Design Engineer is responsible for leading the design and development of advanced Brushless DC (BLDC) Motors, Voice Coil Actuators (VCAs), and other precision…
Added 3 hours ago
Engineer II
USA-Medtronic MiniMed, Inc 1017
Northridge, CA
Must Have: Minimum Requirements
Added 3 hours ago
Senior Structural Engineer – Substation
E2 Consulting Engineers, LP
Pasadena, CA
Perform careful self-checking activities to ensure the quality of work before it is presented to Lead Engineer for review.
Added 4 hours ago
Senior Space GNC Engineer
Varda Space Industries
El Segundo, CA
As a Senior Space GNC Engineer, you will own the full life cycle of GNC development at Varda, from design through to unit, hardware-in-the-loop, on-vehicle functionality, and flight…
Added 4 hours ago
SI
Analytics Specialist SE (Commercial FINS & Canada) - Lead Solution Engineer
Salesforce, Inc.
Remote, United States
- $134,750 to $198,170 USD / year
The ideal Analytics Solution Engineer candidate is a challenger, naturally curious, and has a strong desire to demonstrate their technical and/or sales skills, including the ability to…
Added 4 hours ago
SI
Lead Solution Engineer Tableau
Salesforce, Inc.
Remote, United States
- $134,750 to $198,170 USD / year
The ideal Analytics Solution Engineer candidate is a challenger, naturally curious, and has a strong desire to demonstrate their technical and/or sales skills, including the ability to…
Added 4 hours ago
RF Characterization Engineer
Doodle Labs
Austin, TX
The RF Characterization Engineer is responsible for measuring, characterizing, and building the hardware our RF designers create and will play a key role in standing up our new US-based RF…
Added 4 hours ago
RF Design Manager
Doodle Labs
Austin, TX
Lead hiring and development of the Austin RF team, starting with a Senior RF Hardware Engineer and an RF Characterization Engineer
Added 4 hours ago
Hardware Engineer I - ACM
COV Covidien LP
Lafayette, CO
As a Hardware Engineer, you will support the development of embedded electronic hardware for airway management products used in acute care environments. Contribute to the design,…
Added 4 hours ago
Senior Spacecraft Mission Operations Engineer
Varda Space Industries
El Segundo, CA
The Senior Spacecraft Mission Operations Engineer is an experienced spacecraft operator. They are exceptional communicators, adept leaders, and a jack-of-all trades capable of applying…
Added 4 hours ago
Senior NPI Quality and Reliability Engineer III
Stored Energy Systems
Longmont, CO
The Senior NPI Quality and Reliability Engineer III leads new product introduction (NPI) and reliability improvement quality activities for SENS power conversion products. This role…

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