Find work in the United States.

A simpler way to find your next job.

Jobs in the United States

25+ jobs

Save this search

Added just now
Bridge Engineer (Engineer/Architect 1 / Technical Engineer/Architect 1) (PCN 250197)
State of Alaska
Juneau, AK
Alaska DOT&PF offers great opportunities for professional development, having a wide variety of challenges involving all aspects of bridge analysis and design. The incumbent will learn…
Added just now
Bridge Engineer/Architect 1 (PCN 251442)
State of Alaska
Juneau, AK
Alaska DOT&PF offers great opportunities for professional development, having a wide variety of challenges involving all aspects of bridge analysis and design. The incumbent will learn…
Added just now
IR Plume Mod/Sim Systems Engineer II
Qualis LLC
Colorado Springs, CO
Qualis LLc is seeking a Modeling & Simulation Systems Engineer II (IR Plume Mod/Sim Systems Engineer) responsible for the development and delivery of high-fidelity threat modeling products…
Added 1 min ago
Software Engineer - Simulation - Hybrid - Relocation Assistance Available
Insitu inc
Bingen, WA
…capableSimulationSoftware Engineerto be part of an agile software development team advancing Insitu's unmanned aircraft systems. This role is a unique opportunity to develop software and…
Added 1 min ago
Software Development Engineer
CVS Health
Scottsdale, AZ
The Software Development Engineer leads the design, development, modernization, and optimization of cloud-based applications and services, driving enterprise cloud transformation…
Added 1 min ago
Sr. I&C Engineer
MS Technology, Inc.
Oak Ridge, TN
MS Technology, Inc. is seeking a Sr. Instrumentation & Controls (I&C) Engineer to support our client in Oak Ridge, TN. The Sr. I&C Engineer will be responsible for supporting the…
Added 1 min ago
Project Engineer
MS Technology, Inc.
Oak Ridge, TN
MS Technology, Inc. is seeking an experienced Project Engineer to support engineering and project execution activities for a client within the nuclear industry. You'll partner teams,…
Added 1 min ago
RF Communication Engineer II - Blue National Security (Top Secret Clearance requ
Blue Origin LLC
Seattle, WA
This role is part of Blue National Security (BNS), where our focus is the design, development, and delivery of launch and spacecraft systems for national security missions. Through Blue…
Added 1 min ago
Senior Hardware Engineer - Gateway Systems, TeraWave
Blue Origin LLC
Seattle, WA
…support high-capacity satellite communications. The Senior Engineer - Gateway Hardware Systems will contribute to the development, evaluation, and optimization of electronic hardware and…
Added 2 mins ago
Principal AI Engineer - Blue Ring
Blue Origin LLC
Seattle, WA
We are seeking a Principal AI Engineer to join the Blue Ring software team. You will lead the development of AI and machine learning capabilities embedded in Blue Ring's ground system,…
Added 2 mins ago
Avionics Hardware Engineer II - Lunar Permanence
Blue Origin LLC
Seattle, WA
…Lunar Permanence business unit. You will contribute to the development and delivery of avionics products for Lunar Vehicles, including flight computers, I/O units, embedded controllers, and…
Added 2 mins ago
Senior System Engineer
Blue Origin LLC
Seattle, WA
This role supports the development and operations of New Glenn, a single-configuration, heavy-lift orbital launch vehicle capable of routinely carrying people and payloads to low-Earth…
Added 2 mins ago
Senior Software Engineer
DAT Solutions, LLC
Seattle, WA
DAT is looking for a Senior Software Engineer to join our Carrier Network Integrtiy team in Seattle.
Added 2 mins ago
Software Engineer III
American Express
Phoenix, AZ
Experience in application design, software development, and automated testing
Added 2 mins ago
Senior DevOps Engineer - Top Secret
General Dynamics Information Technology
Saint Louis, MO
A Senior DevOps Engineer will drive faster, more reliable software delivery by strengthening the practices, automation and operational discipline that helps teams ship with confidence. This…
Added 3 mins ago
SE
Front-End Web Developer
Schweitzer Engineering Laboratories, Inc.
Pullman, WA
- $82,000 USD / year
You have 3+ years of web development experience
Added 3 mins ago
Test Engineer
Serco USA
Herndon, VA
…the CMS- Serco has a great opportunity for you! This QA Test Engineer will be on a dynamic team, understandig the requirements, generating test cases, running the test cases on a…
Added 3 mins ago
MP
Sr Engineer, Electrical
MOBIS Parts America
Fountain Valley, CA
- $72,372.88 to $107,473.73 USD / year
The Sr. Engineer, Electrical is responsible for the electrical development and vehicle integration of automotive accessories from concept through launch. This position reviews vehicle…
Added 3 mins ago
EG
Software Engineer - Emerging Technologies
Eliassen Group
Saint Louis, MO
- $50 to $60 USD / hour
Our client seeks a Software Engineer to join an Emerging Technologies team focused on innovative retail solutions. The role will contribute to projects involving in-store robotics,…
Added 3 mins ago
Sr Data Scientist
UST Global Inc
Bellevue, WA
Develop Foundation Models: Contribute to the end-to-end development of proprietary foundation models and domain-specific fine-tuning (PEFT, RLHF) to solve high-stakes business challenges.
Added 4 mins ago
PT
Lead Splunk Engineer
Platinum Technologies
NM
- $160,000 to $170,000 USD / year
…firm that specializes in PaaS, Cybersecurity & AI Platform development for the Defense and Federal Sectors. Our team solves hard problems and helps our Mission Partners achieve their goals.…
Added 5 mins ago
Software Development Engineer I or II
Cambia Health Solutions
Vancouver, WA
The Software Development Engineer I would have a Bachelor's degree in Computer Science, Mathematics, Business Administration, Engineering, or a related field and relevant experience in a…
Added 5 mins ago
Software Development Engineer I or II
Cambia Health Solutions
Burlington, WA
The Software Development Engineer I would have a Bachelor's degree in Computer Science, Mathematics, Business Administration, Engineering, or a related field and relevant experience in a…
Added 5 mins ago
Software Development Engineer I or II
Cambia Health Solutions
Renton, WA
The Software Development Engineer I would have a Bachelor's degree in Computer Science, Mathematics, Business Administration, Engineering, or a related field and relevant experience in a…
Added 5 mins ago
Network Engineer
Schweitzer Engineering Laboratories, Inc.
Pullman, WA
Schweitzer Engineering Laboratories (SEL) seeks a creative and highly skilled Network Engineer who is passionate about designing secure, resilient, and scalable network infrastructure that…

Closed listing

Mastercard

AI Engineer ||

O Fallon, MO, United States

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

This opening has closed.

The original listing is kept below for reference.

Find open jobs More jobs with this employer

About employer

Job details

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

Similar jobs hiring now

No close matches right now. Try another title or a wider area.

Search current openings

Original job description

Archived listing. The details below describe a past opening.

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

About employer

More about this job

Skills

ML
Workflow
Normalise data
Documentation
Unstructured data
Cybersecurity
Confidentiality

Report this job