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Added 1 min ago
Associate III, Electromechanical Technical Support - OEE (Monday - Friday, 8:00 AM EST - 2:30 PM EST)
Alcon Research, LLC. Company
Johns Creek, GA · Duluth, GA
…a manufacturing environment. This includes troubleshooting, testing, assembling, installing, calibrating, and maintaining equipment. The role partners closely with Process Engineering, Team…
Added 10 mins ago
Senior Robotics Engineer
Azalea Robotics Corporation
Berkeley, CA
Proven track record of real-world deployment, with experience testing and debugging software on physical robotic hardware rather than relying solely on simulation
Added 12 mins ago
Lead Application Engineer
Deliberately.ai
San Francisco, CA
We are looking for a Lead Application Engineer to join our team and lead the development of key projects across our application. This senior-level role requires someone who can…
Added 16 mins ago
Contamination Specialist
Celgard, LLC
Charlotte, NC
Lead contamination reduction projects with cross-functional teams in the Charlotte facility to resolve quality concerns and issues regarding contamination.
Added 18 mins ago
Head of Forward Deployed Engineering
Newcode.ai
Chicago, IL
We are hiring a Head of Forward Deployed Engineering to build and lead the software engineers who bring those workflows into production. You will combine engineering leadership, practical…
Added 18 mins ago
Associate Director, Power Systems Engineering
Scout Clean Energy
Boulder, CO
As Scout's Associate Director, Power Systems Engineering, you will lead the company's Power Systems Engineering function and serve as Scout's senior technical authority for electrical…
Added 18 mins ago
Senior Operations Technology Specialist
MacDonald-Miller Facility Solutions
Kent, WA
Deliver reliable production software. Lead the design, development, testing, deployment, and maintenance of custom applications, services, APIs, and internal tools. Translate operational…
Added 18 mins ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Chicago, IL
- $140,000 to $145,000 USD / year
Lead the architecture, design, development, and testing of modern software solutions, prototypes, pilots, and reusable platform capabilities.
Added 18 mins ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Peoria, IL
- $140,000 to $145,000 USD / year
Lead the architecture, design, development, and testing of modern software solutions, prototypes, pilots, and reusable platform capabilities.
Added 18 mins ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Irving, TX
- $140,000 to $145,000 USD / year
Lead the architecture, design, development, and testing of modern software solutions, prototypes, pilots, and reusable platform capabilities.
Added 18 mins ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Broomfield, CO
- $140,000 to $145,000 USD / year
Lead the architecture, design, development, and testing of modern software solutions, prototypes, pilots, and reusable platform capabilities.
Added 18 mins ago
S
VP of Engineering
Screencastify
Chicago, IL
- From $200,000 USD / year
…expand into new markets and invest in product-led growth, you'll lead a small high-performing engineering team, set technical direction, drive AI initiatives, and partner closely with…
Added 20 mins ago
Senior/Staff Software Engineer [Full Stack]
Prudentia Sciences
Boston, MA · New York, NY
We're seeking an exceptional Senior/Staff Software Engineer to build and lead our core platform as we scale. This is a rare opportunity to join a high-impact technology company in a major…
Added 22 mins ago
TF
Head of Engineering
Tea for Women
Remote, United States
- $190,000 to $210,000 USD / year
We're looking for a Head of Engineering to lead our engineering organization through its next stage of growth, building both the technology and the team that will power the future of Tea.
Added 23 mins ago
Electrical Engineer
VU Talent Partners
San Francisco, CA
…subsystems for our next‑generation defense laser platforms. You will lead end‑to‑end beam‑train design, automated aiming, and materials‑testing efforts across pulsed and CW regimes,…
Added 24 mins ago
YH
Lead .NET Core Developer
YO HR Consultancy
Fort Mill, SC
- $120,000 to $150,000 USD / year
Job Title: Senior/Lead Software Engineer - Tibco to .NET Core Migration (Financial Services/Wealth Management)
Added 24 mins ago
AR
Mid/Senior Level Robotics Software Engineer
AlphaOne Robotics
Dallas, TX
- $100,000 to $150,000 USD / year
Perform end-to-end testing of integrated hardware-software systems, identifying and resolving complex issues autonomously.
Added 24 mins ago
Sr Forward Deployed Engineer (FDE), AWS Forward Deployed Engineering, US Government
Amazon Web Services, Inc.
Jessup, MD · Arlington, VA · Seattle, WA · New York, NY · Denver, CO · Herndon, VA
…the customer's engineering team. FDEs write production-grade software and own outcomes end-to-end, from prototype through enterprise-scale deployment, combining the technical rigor of an…
Added 24 mins ago
Sr Forward Deployed Engineer (FDE), AWS Forward Deployed Engineering, US Government
Amazon Web Services, Inc.
Jessup, MD · Arlington, VA · Seattle, WA · New York, NY · Denver, CO · Herndon, VA
…the customer's engineering team. FDEs write production-grade software and own outcomes end-to-end, from prototype through enterprise-scale deployment, combining the technical rigor of an…
Added 25 mins ago
CI
Software Engineer
Certive Inc.
Remote, United States
- $6,000 USD / month
Certive is building the modern compliance platform for insurance and real estate brokerages: software that tracks every license, never misses a renewal, and files renewals and new…
Added 26 mins ago
RU
Data Engineer V - US
Rackspace US, Inc.
Remote, United States
- From $165,830 USD / year
Lead and mentor a team/pod of engineers, prioritizing workload and driving on-time, Agile delivery.
Added 28 mins ago
M
Head of Frontend Engineering
Mobena
Remote, United States
- $180,000 to $220,000 USD / year
Lead the existing frontend to release: Plan and deliver changes without disrupting the advisors who are testing it.
Added 30 mins ago
SA
Head of Test & Quality Engineering
Somo AI
San Francisco, CA
- $165,000 to $210,000 USD / year
Lead root-cause analysis across hardware, firmware, networking, and software.
Added 30 mins ago
SA
Head of Program Management
Somo AI
San Francisco, CA
- $180,000 to $215,000 USD / year
Lead product release readiness across internal teams and external stakeholders, ensuring testing, validation, documentation, manufacturing readiness, and release deliverables are completed…
Added 33 mins ago
Platform Engineer Inter (Internship to hire)
Balanxbio
Remote, United States
…application services, with an initial focus on staging and testing…

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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