Back to jobs
New

AI Engineer

Chicago, IL, US

About You:

Are you energized by the opportunity to build and scale AI solutions that create real business impact? Do you thrive at the intersection of software engineering, machine learning, and emerging generative AI technologies? If so, we have an exciting opportunity for you at ARCO, a Family of Construction Companies.

We are looking for an AI Technical Engineer to help design, develop, and deploy enterprise-grade AI and large language model (LLM) solutions across our organization. This individual will play a key role in advancing our AI strategy by building intelligent applications, enhancing operational efficiency, and identifying innovative ways to leverage AI throughout the business.

 

A Day in the Life: 

  • Design, build, and deploy AI-driven applications and services
  • Develop generative AI solutions using large language models (LLMs) via Azure OpenAI Service
  • Implement use cases such as chatbots, copilots, document summarization, knowledge search, and workflow automation
  • Apply prompt engineering, grounding, and retrieval-augmented generation (RAG) techniques
  • Evaluate LLM outputs for accuracy, safety, and performance
  • Build, train, and evaluate models using Azure Machine Learning
  • Work with structured and unstructured data to support AI and LLM-based solutions
  • Perform data preprocessing, feature engineering, and model tuning
  • Manage model lifecycle, versioning, and prompt iteration strategies
  • Monitor model and LLM performance, usage, and cost; optimize as needed
  • Implement CI/CD pipelines using Azure DevOps or GitHub
  • Document models, prompts, and system architecture clearly
  • Translate business needs into scalable technical solutions
  • Work with cross-functional teams to identify AI and LLM opportunities
  • Deploy and manage AI/LLM solutions in Azure environments
  • Build scalable applications using Azure Functions, Azure App Service, or containers
  • Integrate AI capabilities into enterprise systems and Microsoft tools (e.g., Teams, SharePoint, Power Platform)
  • Develop backend services and APIs to support AI/LLM applications

Necessary Qualifications: 

  • Bachelor’s degree in Computer Science, Engineering, or related field
  • 2–5+ years of experience in software development, AI, or machine learning
  • Strong programming skills in Python / Microsoft full-stack development
  • Experience building APIs and backend services
  • Hands-on experience or strong familiarity with large language models (LLMs) and generative AI concepts
  • Experience working in a cloud environment (Azure preferred)
  • Experience building applications using Azure OpenAI Service
  • Knowledge of LLM techniques such as prompt engineering, RAG, embeddings, and vector search (e.g., Azure AI Search)
  • Experience integrating AI into Microsoft ecosystem tools (Teams, SharePoint, Power Platform)
  • Familiarity with containerization (Docker) and orchestration (Kubernetes)
  • Experience with secure, enterprise-grade AI deployment

What We Can Offer You: 

We are dedicated to the well-being of our associates and are proud to be consistently recognized as a Best Place to Work. Our compensation and benefits package not only supports our associates and their families but benefits local communities and communities around the world.

  • Industry-leading performance-based bonus program
  • ESOP
  • Traditional and Roth 401k
  • Tuition reimbursement for associates
  • Scholarship for associates’ children up to $28,000 per child
  • 1-month paid sabbatical after every five years of employment, plus $5,000 for travel
  • 1-week paid volunteer leave each year
  • 100% charitable match
  • Medical, dental, and vision insurance coverage
  • 100% paid 12-week maternity leave

At ARCO, our first core value is to treat people fairly and do the right thing. We are committed to building and sustaining a culture that supports diversity and inclusion. We are proud to be an equal opportunity employer, and all qualified applicants will receive consideration for employment.

From recruiting, training, and hiring practices to selecting our subcontractors, we understand that diversity of all those involved in the construction process enhances our ability to deliver the best solutions to our customers. We hire the best and the brightest from across the country – constructing a team of experts in architecture, design, engineering, project management, and business services.

MAKE YOUR MOVE

We are proud to be one of the fastest-growing, privately-owned companies in America, celebrating over 30 years of experience as design-build experts. We have completed over 7,500 design-build projects nationwide. We ranked #9 on ENR’s Design-Build Firms list and #34 on ENR's Top 400 Contractors list of 2026. Most importantly, our clients like us, trust us, and want to do business with us. We are looking for people with the same enthusiasm, passion, and respect for the hard work that brought us to where we are today. Are you a person who can make a difference at ARCO? If the answer is “Yes!” we look forward to meeting you.

ARCO does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies without pre-approval from ARCO’s Human Resources team. Pre-approval is required before any external candidate can be submitted. ARCO will not be responsible for fees related to unsolicited resumes and for candidates who are sent directly to our hiring managers. Agencies must have a fully executed vendor agreement in place as well as written approval to submit candidates from an ARCO TA Manager for a specific position before submitting candidates.

LEGAL DISCLAIMER

EOE, including disability/vets

Apply for this job

*

indicates a required field

Resume/CV*

Accepted file types: pdf, doc, docx, txt, rtf

Cover Letter

Accepted file types: pdf, doc, docx, txt, rtf

Select...
Select...
Select...
Select...
Select...

Note: Selecting “no” will not eliminate you from consideration for this role.

Message frequency may vary. Message and data rates may apply.

Reply HELP for help or STOP to opt-out.

[Hyperlink to each] Candidate Privacy Policy & Terms of Service

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in ARCO Companies’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Select...
Select...
Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.

Select...

Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 07/31/2029

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury
Select...

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.