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Added just now
IA
Auto General Service Technician
Icahn Automotive Group LLC
Woodinville, WA
- $17.13 to $21.6 USD / hour
Install batteries and check starting / charging systems
Added just now
Process Control Engineer - Control Systems
CPChem
Port Arthur, TX
…Orange, Texas. This role will serve multiple different control engineering functions from daily run and maintain support, project support, process optimization, regulatory control…
Added just now
Aerospace Assembly Technician I - Entry-Level
Amro Fabricating Corporation
Mukilteo, WA
…nearly 50 years of success, we deliver Payload & Protection Systems, Aero/Hydrodynamic Interstage Systems, and Propulsion & Launch Systems to more than 80 prime contractors supporting over…
Added 1 min ago
Advanced Chemical Operator 3rd Shift [11pm-7:30am]
Michelman
Cincinnati, OH
…range of equipment including reactors, kettles, filtration systems, and utility operations. They follow standard operating procedures to prepare, adjust, and complete production orders…
Added 1 min ago
Mechanical Engineer
Corning
Wilmington, NC
Solid understanding of mechanical systems, piping/P&IDs, drive trains, and pneumatic/electromechanical actuators. Ability to interpret engineering requirements and translate them into…
Added 2 mins ago
Applications Engineer
Nordson Corporation
MN
…samples on laboratory and production Automated Optical inspection systems and acoustic microscope systems. This role provides hands-on experience with advanced non-destructive inspection…
Added 2 mins ago
ZT
Systems Engineer III
Zekiah Technologies, Inc
Dahlgren, VA
- $135,000 to $170,000 USD / year
We have an opportunity for an enthusiastic Systems Engineer with a desire to grow while working with a skilled and highly motivated team on leading-edge work. Our team provides IT services…
Added 2 mins ago
ZT
Journeyman Software Developer
Zekiah Technologies, Inc
Dahlgren, VA
- $62,500 to $101,500 USD / year
…team on leading-edge work. Our team provides IT services for systems engineering and information management systems to multiple major DoD programs. Each team member has opportunities to…
Added 4 mins ago
Sr Mechanical Engineer (Design Engineer) (SRM)
General Dynamics Ordnance & Tactical Systems
Huntsville, AL · Hampton, AR
General Dynamics Ordnance and Tactical Systems (OTS) is a global leader in the design, engineering and production of munitions, energetics, weapons, armaments, and missile subsystems around…
Added 5 mins ago
Risk Manager - Radar System Replacement (RSR)
Peraton
Herndon, VA
…Federal Aviation Administration, Peraton delivers innovative systems and services that keep our nation’s skies safe, connected, and moving…
Added 6 mins ago
Maintenance Engineer
Schulte Companies
Tallahassee, FL
Hospitality Engineering offers an incredible career path for people who enjoy hands-on work and solving problems.
Added 9 mins ago
Specialist, Subcontracts
L3Harris Technologies
Chantilly, VA
…supplier cost, schedule performance and collaboration with engineering on the technical management of the…
Added 10 mins ago
Procurement & Facilities Coordinator
Department of Aviation
Henrico, VA
Oversee daily facility operations, repairs, inspections, and building systems.
Added 10 mins ago
BG
Site Installation Supervisor II (Logistic Systems)
BEUMER Group
Remote, United States
- $33 to $38 USD / hour
…lead. This role will require work with conveyors, integrated systems, and third party or customer equipment on…
Added 11 mins ago
TC
Project Mechanical Engineer V
The Cannon Corporation
Denver, CO
- $40,123 USD / year
…as a high-level specialist in a lead role for the mechanical engineering team. Projects may include new construction and renovation in educational, healthcare, sports, corporate commercial…
Added 11 mins ago
BA
Data Engineer, Mid
Booz Allen Hamilton
Aurora, CO
- $61,900 to $141,000 USD / year
…help build advanced technology solutions and implement data engineering activities on some of the most mission-driven projects in the industry. You'll develop and deploy the pipelines and…
Added 11 mins ago
TC
Technical Designer III
The Cannon Corporation
Denver, CO
- $40,123 USD / year
Assist in coordination of engineering systems with engineers and consultants.
Added 11 mins ago
MM
Intern - Estimating
Martin Marietta Materials, Inc
Colorado Springs, CO
- $25 to $30 USD / hour
…supporting efforts to build and maintain business processes, systems, and data. Subject matter experts will provide guidance to help resolve complex problems.JOB SUMMARY The Production…
Added 11 mins ago
TC
Project Architect IV
The Cannon Corporation
Denver, CO
- $40,123 USD / year
Lead and assist in coordination of engineering systems with engineers and consultants; actively partner with Design Leadership to carry through design intent; and coordinate with all other…
Added 11 mins ago
CC
Mechanical Engineer II
CONMED Corporation
Denver, CO
- $40,123 USD / year
…to leading and overseeing EUMDR remediation as a mechanical engineering technical lead across Advanced Surgical's…
Added 11 mins ago
TC
Designer IB
The Cannon Corporation
Denver, CO
- $40,123 USD / year
…coordination, and detailing of architectural materials and…
Added 11 mins ago
RU
Manager, Risk and Compliance
RSM US LLP
Denver, CO
- $111,200 to $190,300 USD / year
…and ensuring release readiness. Working closely with product, engineering, and delivery teams, the Manager provides hands on risk and compliance support and helps address issues as they…
Added 11 mins ago
TC
Experiential Graphic Designer II
The Cannon Corporation
Denver, CO
- $40,123 USD / year
Develop documentation for a variety of design projects to include graphic programs, wayfinding and signage systems, donor recognition programs and interpretive exhibits, under the direction…
Added 11 mins ago
TC
Project Electrical Engineer IV
The Cannon Corporation
Denver, CO
- $40,123 USD / year
Perform electrical engineering systems design for building construction. Initiate project designs and help to develop design goals and systems.
Added 11 mins ago
GC
Principal / Sr. Principal Hydraulics Business Development Leader - Dams Market
Geosyntec Consultant
Greenwood Village, CO
- $142,540 to $271,495 USD / year
This position will provide key leadership and build out our hydraulic engineering capabilities, leveraging existing staff resources and collaborating with other senior dam practitioners…

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.

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About employer

Job details

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

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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

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