AI System Developer, Level III

Tallgrass Freight Company

Senior AI System Developer responsible for designing, developing, and supporting complex AI-enabled solutions for a leading energy infrastructure company. Mentoring less experienced team members and contributing to technical maturity.

Posted 7/9/2026full-timeLakewood • Colorado • 🇺🇸 United StatesSeniorLead💰 $106,000 - $131,000 per yearWebsite

Tech Stack

Tools & technologies

Microservices.NETOraclePythonSQL

About the role

Key responsibilities & impact

The AI System Developer III serves as a senior individual contributor responsible for the design, development, integration, and support of complex AI-enabled solutions, enterprise integrations, and advanced microservices.
This role operates with a high degree of independence and contributes to solution design decisions, reusable architectural patterns, and the technical maturity of the AI Center of Excellence.
The position emphasizes deep expertise across retrieval-augmented generation (RAG), multi-agent orchestration, and model fine-tuning, while accelerating enterprise delivery through AI-assisted development and mentoring of less experienced team members.

Requirements

What you’ll need

Bachelor's degree from an accredited institution in Computer Science, Machine Learning, Data Science, Software Engineering, Information Systems, Business Management, or a related discipline. A Master's degree in Computer Science, Machine Learning, or a related field is preferred.
A minimum of seven (7) years of direct work experience in IT or a related discipline may be considered as a substitute for a degree.
Minimum of four (4) to five (5) years of overall IT experience.
Minimum of four (4) years of recent experience focusing on system development, support, implementation, and upgrades with demonstrated AI/ML components.
Minimum of four (4) years of development experience in modern software engineering languages and environments; strong proficiency in Python and common ML/AI libraries and frameworks required.
Demonstrated hands-on experience deploying and optimizing LLMs (open-source or API-based) in production environments.
Demonstrated experience designing and implementing RAG solutions including vector store selection, embedding pipelines, and retrieval quality tuning.
Demonstrated experience designing and implementing agentic or multi-agent systems using orchestration libraries and frameworks.
Experience with model fine-tuning, instruction-tuning, or domain adaptation including training data preparation and evaluation.
Experience in the full product development life cycle including design contribution, development, testing, deployment, and post-production support.
Established SQL skills in MS SQL and/or Oracle databases and working knowledge of data engineering patterns.
Experience with reporting tools and the ability to develop and maintain operational and audit reports.
Experience in an application development environment using web frameworks, microservices, Microsoft .NET or equivalent technology.
Experience implementing AI security controls including PII handling, prompt injection defense, content moderation, and output validation.
Experience effectively communicating business and technical issues to both technical and non-technical audiences.
Experience managing multiple assignments with competing priorities with minimal supervision.
Advanced proficiency in MS Office applications including but not limited to Excel, Word, Access, PowerPoint, and Outlook.

Benefits

Comp & perks

Industry competitive pay
Health insurance package options that include Flexible Spending & Health Savings Accounts
Infertility Coverage
Parental Leave
401(k) with up to a 6% match that vests immediately plus an employer discretionary contribution of up to 4%
Wellness Programs and Mental Health Resources
Employer-paid life insurance, short-term disability, and long-term disability coverage
Critical Illness & Accident Insurance
Vacation, sick days, paid caregiver leave, volunteer and bereavement paid time off
Identity theft protection
Annual discretionary bonus
Generous Tuition Reimbursement Program
Company-paid holidays and floating holidays
Company vehicle (if applicable)
Employee discounts; vehicles, tires, cellular plans, and more
Networking and employee engagement events
Personal development to grow your career with us based on your strengths and interests

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

AI/ML LibrariesSystem DevelopmentData Engineering PatternsSQL (MS SQL, Oracle)Web FrameworksMicroservicesLLM DeploymentInstruction-TuningEmbedding PipelinesProduct Development Life Cycle

Soft Skills

Effective CommunicationTime Management