Jobs in the United States

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Ticket Operations Analyst - Product Ops
AXS
Los Angeles, CA
…enjoy unforgettable live entertainment, and we continue to lead the evolution of our industry…
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General Manager I - Store 6315 Gibbstown, NJ
Advance Stores Company Inc (500)
Gibbstown, NJ
Provide DIY service including battery installation, testing, wiper install, etc.
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General Manager II - Store 5230 - Florence, SC
Advance Stores Company Inc (500)
Florence, SC
Provide DIY service including battery installation, testing, wiper install, etc.
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General Manager I Store 8166 Baytown TX
Advance Stores Company Inc (500)
Baytown, TX
Provide DIY service including battery installation, testing, wiper install, etc.
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General Manager II - Store 9244 - Green Cove Springs, FL
Discount Auto Parts (550)
Green Cove Springs, FL
Provide DIY service including battery installation, testing, wiper install, etc.
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Sr Associate Scientist, Analytical Ops
Kite Pharma, Inc.
CA
Kite’s Analytical Development, Testing and Logistics (T&L) team is hiring a Senior Associate Scientist, Analytical Ops to design, execute and troubleshoot PCR- and ELISA-based testing and…
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Westlake Automotive Lead Technician - No Weekends!
Main Street Auto
Denver, NC
Use scan tools, testing equipment, and shop software
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Pit Stop Goose Creek A level Technician
Main Street Auto
Goose Creek, SC
Use scan tools, testing equipment, and shop software
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Mission Automotive A level Technician
Main Street Auto
Cartersville, GA
Use scan tools, testing equipment, and shop software
Added 1 min ago
Lead Substation Engineer
Consigli Construction
New York, NY · Milford, MA · Boston, MA · Washington, DC · Albany, NY
The Lead Substation Engineer provides technical leadership and oversight for high-voltage substation projects supporting utility-scale solar and battery energy storage developments. This…
Added 1 min ago
Energy Storage Applications & SCADA Lead
Consigli Construction
New York, NY · Milford, MA · Boston, MA · Washington, DC · Albany, NY
Lead technical punch-list activities and verify final software, documentation, training materials, testing records, and turnover deliverables.
Added 1 min ago
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Robotics Research Intern, Manipulation
Toyota Research Institute
Los Altos, CA
- $45 to $65 USD / hour
Strong programming skills in C++ and/or Python and experience developing, testing, or debugging technical software.
Added 1 min ago
A
Safety Assurance Engineer Lead
Actalent
Melbourne, FL
- $48 to $64 USD / hour
Job Title: Safety Assurance Engineer LeadJob DescriptionWe are seeking an experienced Safety Assurance Lead to support the development of safety-critical transportation systems and…
Added 2 mins ago
Manufacturing Engineer 3
Actalent
Pontiac, IL
…floor and in the lab. Office work focuses on PCN documentation, testing reports, prototype design, and manufacturing process analysis, often using CAD and other engineering software tools.…
Added 2 mins ago
AI
Data Engineer - Level III
ATTAINX INC
Fort Collins, CO
- $120,000 to $135,000 USD / year
Job Title: Data Architect / Data Engineering Lead
Added 3 mins ago
Product Design Engineer - Apple Vision Pro
Apple
San Jose, CA
Apple is where individual imaginations gather together, committing to the values that lead to great work. Every new product we build, service we create, or Apple Store experience we deliver…
Added 3 mins ago
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Elevator Inspector Federal Projects
SIRIS
Washington, DC
- $105,000 to $120,000 USD / year
At SIRIS, we believe strong teams are built on accountability, humility, and the courage to lead when challenges arise.
Added 4 mins ago
Sr Manager, Software Development & Engineering Lead (PL)
Charles Schwab Inc.
Austin, TX
…exciting and challenging projects, train on new technologies and lead other Developers to set the future of the Data…
Added 4 mins ago
Substation Design Engineer
E2 Consulting Engineers, LP
Emeryville, CA
…(PG&E) infrastructure projects. Working under the direction of a Lead Substation Design Engineer, you will perform essential engineering activities for the design and construction of…
Added 4 mins ago
Marketing Specialist
Yes Energy
Boulder, CO
…Energy’s industry-leading electric power trading analytics software provides real-time visibility into the massive amount of data generated by the North American electrical grid daily. Our…
Added 4 mins ago
Simulation Specialist I
TechnipFMC
Houston, TX
Must learn how to operate the ROV simulator for testing and demonstration.
Added 5 mins ago
Senior Principal Software Engineer
BAE Systems
Hudson, NH · Austin, TX · San Diego, CA
Software testing, validation, and verification activities
Added 5 mins ago
Software Engineer (Expert)
BAE Systems
Herndon, VA
…We are all about trust, camaraderie and a shared ambition to lead the world in defense technologies and national security services. We offer flexible work environment to support the balance…
Added 5 mins ago
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Lead Data/AI Engineering
AT&T Services, Inc.
Remote, United States
- $158,200 to $237,400 USD / year
Design, Development, Testing, and Deployment: Lead the creation of scalable Data & AI applications using best practices in software engineering such as automation, version control, and…
Added 6 mins ago
Applications Engineer
Omni Technologies
Greendale, IN
…Quality, and Sales to deliver solutions that meet performance, lead-time, quality, and cost…

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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