Jobs in the United States

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Field Engineer
Wharton-Smith
Tampa, FL
…Southeast, is seeking qualified candidates for the position of Field Engineer. We are currently seeking someone who is willing to work in Tampa,…
Added just now
Project Engineer
Wharton-Smith
Tampa, FL
…is seeking qualified candidates for the position of Project Engineer. We are currently seeking someone who is willing to work in Tampa,…
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Project Engineer
Wharton-Smith
Sanford, FL
…is seeking qualified candidates for the position of Project Engineer. We are currently seeking someone who is willing to work in Central,…
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AN
SUPERVISORY INTERDISCIPLINARY(SUPERVISORY GENERAL ENGINEER) (TITLE 5)
Air National Guard Units
Jacksonville, FL
- $106,437 to $138,370 USD / year
This National Guard position is for a SUPERVISORY INTERDISCIPLINARY(SUPERVISORY GENERAL ENGINEER) (TITLE 5), Position Description Number T5904700 and is part of the FL 125th FW, National…
Added just now
AC
SERVICE CONTRACT EVALUATOR
Air Combat Command
Grand Forks AFB, ND
- $61,722 to $80,243 USD / year
…evaluation on a variety of service contracts for the Civil Engineer (CE)…
Added just now
AE
SUPERVISORY GENERAL ENGINEER (ENVIRONMENTAL)
Air Education and Training Command
Fort Sam Houston, TX
- $108,001 to $140,403 USD / year
…training, and/or technical experience that furnished (1) a thorough knowledge of the physical and mathematical sciences underlying professional engineering, and (2) a good understanding,…
Added just now
Distribution Engineer 3 - Grid
Sargent & Lundy
Columbus, OH
…team environment with other engineers and designers using your knowledge of engineering and design practices…
Added just now
GIS Solution Engineer – Local Government (Southeast)
Esri
Charlotte, NC
Knowledge of cloud computing concepts and environments (Microsoft Azure or AWS)
Added 1 min ago
Transmission EIT/Coordinator
HDR
Denver, CO
National Electrical Safety Code (NESC) knowledge
Added 1 min ago
Senior Supplier Quality Engineer
Aumovio
New Braunfels, TX
Added 1 min ago
CAD Operator - Water/Wastewater
Kimley-Horn
St. Petersburg, FL
You will be working closely with the project engineer or designer utilizing Autodesk Civil 3D, and Revit to create civil construction documents for wastewater lift stations, pump stations,…
Added 1 min ago
Software Integration Engineer - Associate
iCapital
Colorado Springs, CO · Salt Lake City, UT
iCapital is looking to hire a Software Integration Engineer - Associate to join the Annuities Platform Team. This role develops, tests and supports well-defined integration solutions that…
Added 1 min ago
Software Integration Engineer - Associate
iCapital
Salt Lake City, UT · Colorado Springs, CO
iCapital is looking to hire a Software Integration Engineer - Associate to join the Annuities Platform Team. This role develops, tests and supports well-defined integration solutions that…
Added 1 min ago
Software Integration Engineer - Associate
iCapital
Colorado Springs, CO · Salt Lake City, UT
iCapital is looking to hire a Software Integration Engineer - Associate to join the Annuities Platform Team. This role develops, tests and supports well-defined integration solutions that…
Added 1 min ago
Senior Software Integration Engineer - Assistant Vice President
iCapital
Colorado Springs, CO · Salt Lake City, UT
iCapital is looking to hire a Senior Software Integration Engineer - AVP to deliver robust, scalable and high-quality integration solutions across complex client and product ecosystems.…
Added 1 min ago
Senior Software Integration Engineer - Assistant Vice President
iCapital
Salt Lake City, UT · Colorado Springs, CO
iCapital is looking to hire a Senior Software Integration Engineer - AVP to deliver robust, scalable and high-quality integration solutions across complex client and product ecosystems.…
Added 1 min ago
Senior Software Integration Engineer - Assistant Vice President
iCapital
Colorado Springs, CO · Salt Lake City, UT
iCapital is looking to hire a Senior Software Integration Engineer - AVP to deliver robust, scalable and high-quality integration solutions across complex client and product ecosystems.…
Added 1 min ago
Senior Mechanical Engineer/Project Manager
Pennoni
Newark, DE
Strong knowledge of applicable building and engineering standards, including ICC codes, ASHRAE, NFPA, and other relevant requirements.
Added 2 mins ago
Sr. Specialist, Quality Process Engineer - Precision Measurement
L3Harris Technologies
Canoga Park, CA
Job Title: Sr. Specialist, Process Quality Engineer - Precision Measurement
Added 2 mins ago
Specialist, Reliability and Systems Safety Engineer
L3Harris Technologies
Canoga Park, CA
Job Title: Specialist, Reliability and Systems Safety Engineer
Added 2 mins ago
Lead, Electrical Engineer
L3Harris Technologies
Alpharetta, GA
Job Title: Lead, FPGA Firmware Verification Engineer
Added 2 mins ago
Process Engineer
Shaw
Cartersville, GA
Shaw Industries is seeking a driven, hands-on Process Engineer to support our Tufting operations in Cartersville, GA across Plants 12 and 13.
Added 2 mins ago
DevOps Engineer
REPAY Management Services
Tempe, AZ
REPAY is a fast-paced FinTech company experiencing significant growth and expansion. We are adding a DevOps Engineer to our growing team. The DevOps Engineer works as part of a team of…
Added 2 mins ago
Production Leader - Nights
Mars Wrigley Conf. (MCNA)
United States
Area Ownership – Collaborate with the rest of the Area Leadership Team (Area Manager or Continuous Improvement Engineer, Continuous Improvement Specialist, Maintenance Coordinator) to…
Added 2 mins ago
Industrial Engineering
Mars Wrigley Conf. (MCNA)
United States
Join us at our Jackson, TN, plant, where we are seeking an Associate Process Engineer to lead transformative initiatives. These initiatives include optimize processes, reduce waste, and…

US: Mastercard Technologies, LLC

AI Engineer ||

O'Fallon, MO, United States

Pay Ranges O'Fallon, Missouri: $92,000 - $147,000 USD

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Job details

Pay: Pay Ranges O'Fallon, Missouri: $92,000 - $147,000 USD
Posting language: English
Posted: Nov 4, 2026

Original job description

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

AI Engineer ||

Role Summary The AI Engineer is responsible for designing and delivering AI-powered solutions that improve engineering productivity and business workflows. This role requires a strong foundation in AI/ML concepts, with hands-on expertise in LLM systems, data preparation, and context design (including chunking) to build scalable, high-quality AI solutions.

What You Will Do Lead AI-Driven Solution Development

Identify and drive high-impact AI use cases across engineering and business workflows Design end-to-end AI solutions leveraging LLMs, orchestration, and automation Move rapidly from exploration to production-grade implementations

Build LLM Solutions & Intelligent Agents

Develop LLM-based applications including prompt frameworks, orchestration layers, and integrations Create and evolve AI-powered agents (e.g., Copilot-based or similar) for workflow automation and decision support Apply techniques such as retrieval-augmented approaches, context management, and prompt optimization

Design Data, Context & Chunking Strategies (Critical)

Structure and prepare data for LLM consumption, including effective chunking and context window optimization Design retrieval strategies that improve relevance, accuracy, and response quality Balance context size, latency, and cost while maintaining solution effectiveness

Apply Strong AI/ML Foundations

Understand and reason about model behavior, evaluation, bias, and limitations Tune and adapt prompts, context, and workflows instead of relying on model retraining Ensure responsible and effective use of AI through sound engineering practices

Drive Engineering Productivity with AI

Apply AI tools (e.g., Copilot and similar) to improve developer velocity and quality Build reusable patterns for AI-assisted coding, testing, and documentation Measure and scale productivity impact across teams

Data & Application Engineering

Build data pipelines and integrations to support AI workflows Develop APIs, services, and applications embedding AI capabilities Ensure solutions are scalable, maintainable, and integrated into real workflows

What You Bring

Strong foundation in AI/ML concepts, especially LLMs and modern AI systems

Hands-on experience with:

Prompt engineering and LLM orchestration frameworks Context design, chunking strategies, and retrieval techniques Working with structured and unstructured data for AI use cases

Solid software engineering and system design experience Ability to build end-to-end AI solutions (data → context → LLM → application) Pragmatic mindset focused on quality, usability, and business impact

Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact reasonable_accommodation@mastercard.com and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

Abide by Mastercard’s security policies and practices;
Ensure the confidentiality and integrity of the information being accessed;
Report any suspected information security violation or breach, and
Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

In line with Mastercard’s total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.

THIS POSTING RELECTS ONE OR MORE CURRENT VACANCIES ON OUR TEAM, AND MASTERCARD INTENDS TO FILL THIS POSITION BY 02/02/2027. If the fill date has passed, Mastercard intends to fill this position as soon as possible.

Pay Ranges O'Fallon, Missouri: $92,000 - $147,000 USD

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