Senior jobs in o'fallon USA
88 senior jobs found in o'fallon: showing 1 - 50
F5 Load Balance Specialist
Company: Programmers.io |
. Present architecture recommendations and operational reviews to senior leadership and business stakeholdersLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 30 Aug 2026
Data Engineering Intern, Summer 2027 – St. Louis, Mo, Us
Company: Mastercard |
and leaders - Networking opportunities with fellow interns, employees, and senior leaders - Professional development experiencesLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 29 Aug 2026
Enterprise Operations Intern, Summer 2027 – St. Louis, Mo, Us
Company: Mastercard |
from experienced professionals and leaders - Networking opportunities with fellow interns, employees, and senior leadersLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 29 Aug 2026
Senior Software Engineer
Company: Mastercard |
potential. Title and Summary Senior Software Engineer Who is Mastercard? We work to connect and power an inclusive... potential, and be inclusive with a relentless focus on our customers. As a Senior Software Engineer at MastercardLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 29 Aug 2026
Data Scientist Intern, Summer 2027 – St. Louis, Mo, Us
Company: Mastercard |
and leaders - Networking opportunities with fellow interns, employees, and senior leaders - Professional development experiencesLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 28 Aug 2026
Server/waitstaff
Company: Meridian Senior Living |
Description Meridian Senior Living believes that Everyone Deserves a Great Life. To us, a great life... background checks Meridian Senior Living is an Equal Opportunity EmployerLocation: Meadowlands, MN - O'Fallon, MO, USA
| Salary: unspecified | Date posted: 28 Aug 2026
Wealth Solutions Advisor Safe Act - O'fallon, Mo And Jacksonville, Fl
Company: Citigroup |
where appropriate (including, but not limited to Senior Wealth Advisor, Small Business Partners, Home Lending Officer, Digital WealthLocation: Jacksonville, FL - O'Fallon, MO, USA
| Salary: US$78990 - 110210 per year | Date posted: 27 Aug 2026
Network Architect Ii
Company: Stellar IT Solutions |
:00am - 4:30pm, Monday through Friday. FTE - Direct Hire role Summary The Network Architect II is a senior handsLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 27 Aug 2026
Senior Land Development Pe - O'fallon, Mo
Company: GPAC |
A well-established and highly respected engineering firm is seeking an experienced Senior Civil Land DevelopmentLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 27 Aug 2026
Director, Product Delivery
Company: Mastercard |
and client senior executive management as well as functional business partners. Extensive project/program management, problemLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 26 Aug 2026
Director Of Wellness
Company: Meridian Senior Living |
Director of Wellness Meridian Senior Living believes that Everyone Deserves a Great Life. To us, a great life... senior housing. Previous supervisory and/or management experience in a related healthcare setting. Must have compassionLocation: Meadowlands, MN - O'Fallon, MO, USA
| Salary: unspecified | Date posted: 25 Aug 2026
Lpn
Company: Meridian Senior Living |
Work just THREE shifts a week!! Great for work/home life balance! Meridian Senior Living believes that Everyone Deserves... Knowledgeable of State and local rules, regulations, laws, and ordinances relating to licensed senior housing Previous supervisoryLocation: Meadowlands, MN - O'Fallon, MO, USA
| Salary: US$30 per hour | Date posted: 25 Aug 2026
Software Engineer Intern, Summer 2027 – United States
Company: Mastercard |
interns, employees, and senior leaders Professional development experiences focused on career growth and skill-buildingLocation: O'Fallon, MO, USA
| Salary: US$35 - 46 per hour | Date posted: 25 Aug 2026
Senior Ai Platform Engineer (devops)
Company: Mastercard |
potential. Title and Summary Senior AI Platform Engineer (DevOps) Who is Mastercard? Mastercard powers economies... development and deployment of AI-powered solutions. As a Senior AI Engineer, you will help design, implement, and operate theLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 25 Aug 2026
Senior Software Engineer
Company: Diverse Lynx |
Senior Software Engineer Location: O'Fallon, Missouri - onsite (LOCAL ONLY) Rate - $65/hr. on C2C Java/JEE 6-10Location: O'Fallon, MO, USA
| Salary: US$65 per hour | Date posted: 25 Aug 2026
Principal Software Engineer
Company: Mastercard |
Services Enablement & Transformation (SET) organization, you will move to wherever the need is greatest, adding senior... The Principal Forward Deployed Engineer is a senior individual contributor who deploys into Services teams to deliverLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 25 Aug 2026
Architect/tech Lead - Java & Aws
Company: Diverse Lynx |
) with AWS. Ask is for: Strong Lead / Architect and 1 Senior Consultants required with Product Engineering background. NoLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 24 Aug 2026
Senior Software Engineer (java/jee)
Company: Diverse Lynx |
Senior Software Engineer (JAVA/JEE) Location: O'Fallon, Missouri - onsite (LOCAL ONLY) Contract Rate - $65Location: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 24 Aug 2026
Medical Assistant – Benrus Surgical
Company: BJC HealthCare |
of patients and delivers care according to practice protocols and procedures. This position also serves as an experienced, seniorLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 22 Aug 2026
Senior Business Analyst
Company: Mastercard |
potential. Title and Summary Senior Business Analyst Overview The Revenue Operations & Enablement organization supports... modernization, operational controls, and revenue enablement initiatives. The Senior Business Analyst will support MCBS BillingLocation: O'Fallon, MO, USA
| Salary: US$96000 - 163000 per year | Date posted: 22 Aug 2026
Vice President, Ai Vulnerability Operations
Company: Mastercard |
, platform, application security, risk, and business teams. This is a senior leadership role for someone who can set enterprise... direction, scale operating discipline, influence senior stakeholders, and drive outcomes through teams. The VP will lead theLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 21 Aug 2026
Vice President Platform Engineering
Company: Mastercard |
. Demonstrated success building, leading, and developing high-performing engineering teams. Experience managing managers and seniorLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 21 Aug 2026
Senior Software Engineer
Company: Mastercard |
potential. Title and Summary Senior Software Engineer Overview: Mastercard Send (part of the Mastercard Move portfolio...) to build reliable, maintainable solutions. [Senior SE Skills | Excel] Experience with production support, on-call operationsLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 19 Aug 2026
Senior Analyst, Real Estate Services
Company: Mastercard |
potential. Title and Summary Senior Analyst, Real Estate Services Our Purpose Mastercard powers economies and empowers..., businesses and governments realize their greatest potential. Title and Summary: Senior Analyst, Global Real Estate ServicesLocation: O'Fallon, MO, USA
| Salary: US$88000 - 141000 per year | Date posted: 19 Aug 2026
Magnolia Trails Director
Company: Capital Senior Living |
Description : Find your joy here, at Park Place at Winghaven, a Sonida Senior Living communityLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 15 Aug 2026
Senior Software Engineer
Company: Mastercard |
potential. Title and Summary Senior Software Engineer Job Overview: Responsible for the analysis, design, developmentLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 15 Aug 2026
Senior Ai Engineer, Big Data & Ai Solutions
Company: Mastercard |
potential. Title and Summary Senior AI Engineer, Big Data & AI Solutions Overview The Security Solutions Data Science... of transactions and identify suspicious activity in real time. As a Senior AI Engineer, you will work at the intersectionLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 15 Aug 2026
Caregiver For Seniors
Company: Cornerstone Caregiving |
We are committed to providing exceptional care to individuals in need. Our caregivers are highly trained and compassionate, with a passion for making a positive impact in the lives of others. With fleLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 14 Aug 2026
Housekeeper
Company: Meridian Senior Living |
Description Meridian Senior Living believes that Everyone Deserves a Great Life. To us, a great life... background check Meridian Senior Living is an Equal Opportunity EmployerLocation: Meadowlands, MN - O'Fallon, MO, USA
| Salary: unspecified | Date posted: 14 Aug 2026
Lpn
Company: Meridian Senior Living |
Description Meridian Senior Living believes that Everyone Deserves a Great Life. To us, a great life..., and ordinances relating to licensed senior housing Previous supervisory and/or management experience in a related healthcare settingLocation: Meadowlands, MN - O'Fallon, MO, USA
| Salary: unspecified | Date posted: 14 Aug 2026
Senior Software Engineer
Company: Mastercard |
potential. Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology company... for all. About the Role The Payment & Enablement Optimization program is hiring a Senior Software Engineer to drive our customerLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 14 Aug 2026
Pharmacy Technician / Pharm Tech Apprenticeship
Company: Walgreens |
certification as condition of promotion to senior technician. Attends training requested by Manager and acquires continuingLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 14 Aug 2026
Director, Software Engineering
Company: Mastercard |
solving, and continuous improvement. Make presentations to senior management, business owners, and other stakeholders... to support informed decision-making. Provide recommendations to senior management on technology selection, software architectureLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 14 Aug 2026
Pharmacy Technician / Pharm Tech Apprenticeship
Company: Walgreens |
certification as condition of promotion to senior technician. Attends training requested by Manager and acquires continuingLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 13 Aug 2026
Senior Vulnerability Analyst - Mo
Company: PRI Global |
Title: Senior Vulnerability Analyst Location: O'Fallon, Missouri Hybrid work environment Duration: 12 Months... Required Skills and Experience: Minimum 3 years of experience at a senior level Experience running vulnerability scansLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 12 Aug 2026
Dishwasher
Company: Capital Senior Living |
Description : Find your joy here, at Park Place Senior Living of Winghaven, a Sonida Senior Living community... & much more! Park Place Senior Living of Winghaven, a premier retirement community in O'Fallon, MO, provides quality care to residentsLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 08 Aug 2026
Assistant Director Of Nursing
Company: Capital Senior Living |
Description : Find your joy here, at Park Place at Winghaven, a Sonida Senior Living community... of an accredited school of nursing. Two-year professional nursing experience in a senior living care setting. Two-years supervisoryLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 07 Aug 2026
Senior Project Manager - Millwork
Company: Merric Millwork & Seating |
venue, and senior living industries.The Senior Project Manager will organize, manage, and plan projects for Merric Millwork... & Seating. They will oversee projects with senior managers, sales, estimating, and engineering to ensure that all the customersLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 06 Aug 2026
Vice President, Data Management Platforms (product Development)
Company: Mastercard |
, balancing usability, control, scalability, and auditability. Communicate clearly with senior leaders and cross-functionalLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 05 Aug 2026
Senior Software Engineer
Company: Mastercard |
potential. Title and Summary Senior Software Engineer Overview Join a team focused on transforming how Mastercard...'s payment systems are built, scaled, and operated. As a Senior Software Engineer, you will lead the design and developmentLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 05 Aug 2026
Principal, Technology Risk Analyst
Company: Mastercard |
, and provide actionable insights to stakeholders and senior leadership. Independently lead complex risk and controls initiativesLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 04 Aug 2026
Senior Software Engineer
Company: Mastercard |
potential. Title and Summary Senior Software Engineer Who is Mastercard? We work to connect and power an inclusive... potential, and be inclusive with a relentless focus on our customers. As a Senior Software Engineer at MastercardLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 04 Aug 2026
Portfolios Solutions Analyst
Company: Allianz |
of business. Assist in onboarding new MGAs and facilities. Undertake ad hoc tasks as directed by Line Manager and SeniorLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 04 Aug 2026
Senior Site Reliability Engineer, Performance Engineering
Company: Mastercard |
potential. Title and Summary Senior Site Reliability Engineer, Performance Engineering Senior Site Reliability EngineerLocation: O'Fallon, MO, USA
| Salary: US$96000 - 163000 per year | Date posted: 01 Aug 2026
Senior Specialist, Payroll Tax & M&a Integration
Company: Mastercard |
potential. Title and Summary Senior Specialist, Payroll Tax & M&A Integration Position Summary The Tax ImplementationLocation: O'Fallon, MO, USA
| Salary: US$85000 - 132000 per year | Date posted: 01 Aug 2026
Vice President - Global Technology Account Management, Open Finance Solutions
Company: Mastercard |
, and retention through a segmented, scalable coverage model Serve as a senior technical partner to our most strategic clientsLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 31 Jul 2026
Lead Project Manager
Company: Mastercard |
Regularly communicates to senior management regarding the status of specific project deliverables Perform analysisLocation: O'Fallon, MO, USA
| Salary: US$113000 - 186000 per year | Date posted: 30 Jul 2026
Senior Site Reliability Engineer, Performance Engineering
Company: Mastercard |
potential. Title and Summary Senior Site Reliability Engineer, Performance Engineering Senior Site Reliability EngineerLocation: O'Fallon, MO, USA
| Salary: US$96000 - 163000 per year | Date posted: 29 Jul 2026
Accountant
Company: Mastercard |
accounting considerations, and escalate complex judgments for Senior review. Prepare monthly reporting and analysis of financialLocation: O'Fallon, MO, USA
| Salary: US$69000 - 110000 per year | Date posted: 29 Jul 2026
Senior Software Engineer -java
Company: Korn Ferry |
that is actively expanding to meet increasing scale and impact. You will work directly with senior engineers, architects, and product