Jobs in the United States

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Added 1 min ago
Senior Engineer- Current Product
Brunswick
Fond du Lac, WI
…and high-energy that will keep you motivated for continual design excellence. This position is particularly focused on improving the quality, functionality, and performance of our current…
Added 1 min ago
Production Manager II
Federal Signal
Post Falls, ID
We are a “Solution Driven” manufacturer for the mining industry. At Ground Force Worldwide we design, engineer and manufacture the World’s Finest Mine Support Equipment. We offer a diverse…
Added 1 min ago
Production Manager I
Federal Signal
Post Falls, ID
We are a “Solution Driven” manufacturer for the mining industry. At Ground Force Worldwide we design, engineer and manufacture the World’s Finest Mine Support Equipment. We offer a diverse…
Added 1 min ago
Software Engineer, Machine Learning
ON, CA
Design and performance tune modern C++17 code for an embedded system
Added 2 mins ago
Senior Electrical Engineer
Worley
AB, CA
Perform power system engineering analysis of industrial electric power systems in the areas of coordination of protection, short-circuit calculation, motor starting, grounding calculations…
Added 2 mins ago
Senior Mechanical Engineer - HVAC
Worley
AB, CA
The Senior Mechanical Engineer – HVAC will be based in either Calgary, AB or Edmonton, AB and will play a pivotal role in supporting engineering activities related to HVAC systems across a…
Added 3 mins ago
Data Engineer & Insights Analyst
SMART TECH SKILLS LLC
Reading, PA
We are seeking a Data Engineer & Insights Analyst to transform complex data into trusted, usable information that supports program delivery, operational improvements, and executive…
Added 4 mins ago
Process Engineer II/III - API (Recovery) Mon-Fri shift
Novo Nordisk
Clayton, NC
At Novo Nordisk, we are helping to improve the quality of life for millions of people worldwide. For more than 100 years, we have led the way in diabetes care. Being part of Novo Nordisk…
Added 4 mins ago
Development Engineer II
Amro Fabricating Corporation
Mukilteo, WA
Karman Space & Defense is a leader in the rapid design, development, and production of critical, next‑generation system solutions that align with the U.S. Department of War and its allies’…
Added 4 mins ago
Senior Software Engineer
PDW
Huntsville, AL
Performance Drone Works (PDW) is building the next generation of tactical robotic systems used across defense, national security, and public safety missions. We are building a new center of…
Added 5 mins ago
Staff Machine Learning Engineer
MCG Health
Remote, United States
The Staff Machine Learning Engineer is a senior individual contributor responsible for building and evolving the machine learning engineering capabilities that enable continuous improvement…
Added 5 mins ago
TT
Member of Technical Staff, Full Stack
True Talent Solutions Partners
San Francisco, CA
- $180,000 to $200,000 USD / year
- Background in AI agents, LLMs, or evaluation and quality systems is useful.
Added 6 mins ago
Data Engineer- Remote
ICF Incorporated, LLC
Reston, VA
This role supports the large-scale modernization of legacy systems by leading the migration of documentation and records into a cloud-based environment. The position focuses on transforming…
Added 7 mins ago
Electronics Engineer IV
KARL STORZ
Goleta, CA
KARL STORZ is seeking an experienced Senior Electrical Engineer – Imaging Systems to lead the design, development, and analysis of complex, high-speed electronic circuits for advanced…
Added 7 mins ago
Process Engineer II/III - API (Recovery) Mon-Fri shift
Clayton
At Novo Nordisk, we are helping to improve the quality of life for millions of people worldwide. For more than 100 years, we have led the way in diabetes care. Being part of Novo Nordisk…
Added 7 mins ago
GI
Senior Software Engineer, Compute Platform
GitHub, Inc.
United States
- $127,800 to $339,000 USD / year
As a Senior Software Engineer on Compute Platform, you will work with a distributed team to contribute to the technical direction of a Kubernetes platform that hundreds of internal teams…
Added 7 mins ago
Application Engineer Specialist
SKF
Blue Bell, PA, PA
5+ years of design/application experience in an industrial environment - power train applications or rotating equipment, working with customers and designing mechanical systems
Added 7 mins ago
Vice President – Full Java Stack Engineer
ewminds consulting Services
Pittsburgh, PA
Design highly available, fault-tolerant, and low-latency distributed systems.
Added 7 mins ago
Senior Forward Deployed Engineer (FDE Lead
ewminds consulting Services
East Pittsburgh, PA
Serve as the senior technical lead in discovery and solution design with executive stakeholders; translate ambiguous opportunities into actionable, production-ready plans.
Added 7 mins ago
Full Stack Engineer
ewminds consulting Services
Clairton, PA
· 10+ years of experience in software engineering with significant responsibility for production systems
Added 8 mins ago
Drafter Designer - Royal Switchgear
MacLean Power Systems
Bessemer, AL · Alabaster, AL · Birmingham, AL
Interact with the development, programmer, and manufacturing engineer to develop CAD models and engineering drawings to support the production of prototypes, final design, manufacturing and…
Added 8 mins ago
Machine Learning Engineer
Central Insurance Company
Dublin, OH · Van Wert, OH · Alpharetta, GA · Irving, TX · Waltham, MA
As a Machine Learning Engineer, you will be instrumental by partnering with actuaries, data scientists, software engineers, and business stakeholders to design and deploy machine learning…
Added 8 mins ago
T-Ads Sr Engineer, Software
T-Mobile USA, Inc.
NY
…resolve technical issues and make recommendations for software design and implementation. Success is measured by the ability to deliver effective software solutions that integrate with…
Added 8 mins ago
Senior Software Engineer (L4)
Exiger
McLean, VA · Richmond, VA · San Francisco, CA · NY
Demonstrated ability to serve as a technical go-to person for a team or product area, guiding the design and implementation of complex systems.
Added 8 mins ago
IC
Intel Mask Operations Module Development Engineer
Intel Corporation
OR
- $155,520 to $219,550 USD / year
…contribute to our drive for results and relentless pursuit of quality, ensuring we meet our customers' needs with…

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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