IT Support jobs in o'fallon USA
216 it support jobs found in o'fallon: showing 51 - 100
Lpn/rn Pediatric Home Care Premium Overnights $3000 Sign On Bonus
Company: Phoenix Home Care |
Job Description: Come Experience Nursing the Way It Was Meant to Be! As the leaves begin to change and a new season... brings a fresh sense of possibility, it may be the perfect time for a New Beginning in your nursing career. At Phoenix HomeLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 14 Oct 2026
Senior Software Engineer - Java Full Stack & Ai
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments..., develop, test, deploy, and support complex software solutions. Build scalable APIs, backend services, and modern webLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 14 Oct 2026
Sterile Processing Technician Ii - Prn
Company: BJC HealthCare |
HealthCares newest hospital in St. Charles County, featuring modern private rooms. It offers 24-hour emergency services... operating room to support medical and nursing staff during the pre, intra, and post-operative phase, including preparingLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 14 Oct 2026
Sales Floor Dept Supervisor - Flooring-decor
Company: Lowe's |
and tools to support those directly helping customers provide the best service. Assisting with down stocking and area recovery... associates and customers across departments. It is important that this associate communicate upward to keep management informedLocation: O'Fallon, MO - Saint Peters, MO, USA
| Salary: unspecified | Date posted: 14 Oct 2026
Senior Software Engineer - Java Full Stack & Ai
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments..., develop, test, deploy, and support complex software solutions. Build scalable APIs, backend services, and modern webLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 14 Oct 2026
Software Engineer Ii
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... for high performance and availability. As a Software Engineer II, you will develop, test, deploy, and support applicationsLocation: O'Fallon, MO, USA
| Salary: US$92000 - 147000 per year | Date posted: 13 Oct 2026
Senior Software Engineer
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments.... As a Senior Software Engineer, you will design, build, test, deploy, and support full-stack solutions that power theseLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 13 Oct 2026
Physical Therapist Assistant
Company: CORA Physical Therapy |
Therapist Assistant (PTA)? At CORA Physical Therapy, we empower our clinicians with tools, support, and flexibility-so you can... focus on what really matters: patient care. Join a team thats redefining what it means to serve others and growLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 13 Oct 2026
Senior Software Engineer
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... and translate them into scalable, maintainable, and secure software solutions. Support the technical lead in definingLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 13 Oct 2026
Senior Information Security Engineer
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... Support the design and operationalization of security architectures for AI systems, including secure model deployment patternsLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 13 Oct 2026
Security Monitoring And Response Analyst Ii
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... and physical threats, and it is our people on the front line who make this happen every day. By taking care of our peopleLocation: O'Fallon, MO, USA
| Salary: US$76000 - 127000 per year | Date posted: 13 Oct 2026
Lead Security Monitoring And Response Analyst (insider Threat Program Lead)
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... Mastercard safe and secure from cyber and physical threats, and it is our people on the front who make this happen every dayLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 13 Oct 2026
Data Networking Implement & Maintenance
Company: Diverse Lynx |
Description:- Design and troubleshoot Layer 2 and Layer 3 network flows. Support IP movement, routing, failover, traffic draining... only for the recipient(s). If you received this message in error, please disregard it and notify the sender. If you no longer wishLocation: O'Fallon, MO, USA
| Salary: US$40 - 50 per hour | Date posted: 12 Oct 2026
Software Engineer Ii
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... successful candidate will contribute to the design, development, testing, deployment, and support of enterprise applications while applyingLocation: O'Fallon, MO, USA
| Salary: US$92000 - 147000 per year | Date posted: 12 Oct 2026
Senior Software Engineer (go/c )
Company: Wipro Digital |
integration, vulnerability remediation, performance certification, and production support. Use AI-assisted development tools..., and your skills. We want to see the constant evolution of our business and our industry. It has always been in our DNA - as the worldLocation: O'Fallon, MO, USA
| Salary: US$60000 - 135000 per year | Date posted: 12 Oct 2026
Pharmacy Technician
Company: CVS Health |
to manage all assigned pharmacy workstations and tasks to support the teams ability to promptly, safely and accurately fill... nature and level of work performed by employees within this classification. It is not designed to contain or be interpretedLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 11 Oct 2026
Home Health Aide (hha) Part Time Days
Company: Advantage Nursing Service |
while giving our employee's the support they truly deserve. We know your career is about more than just a job-it's about making... here to provide the resources and support you need to thrive, so you can give your best care without sacrificing your own well-beingLocation: O'Fallon, MO, USA
| Salary: US$16 - 18 per hour | Date posted: 10 Oct 2026
Lead Administrator L1
Company: Wipro |
, logging, alerting, health checks, dashboards, and capacity controls. Support environment readiness, vulnerability... on production readiness. Document operational procedures and support handoff. Required skills: Deep Linux administrationLocation: O'Fallon, MO, USA
| Salary: US$60000 - 135000 per year | Date posted: 10 Oct 2026
Vice President, Enterprise Order Management
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments..., invoicing, revenue, collections, and customer support connect through common standards, controls, data, and ownership boundariesLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 10 Oct 2026
Network Engineer
Company: Diverse Lynx |
and troubleshoot Layer 2 and Layer 3 network flows. Support IP movement, routing, failover, traffic draining, and recovery. Analyze...(s). If you received this message in error, please disregard it and notify the sender. If you no longer wish to receive our communicationsLocation: O'Fallon, MO, USA
| Salary: US$50 per hour | Date posted: 10 Oct 2026
Rehab Nursing Assistant Prn Night
Company: Select Medical |
: Neuro Rehab Coach (Patient Care Tech, Nursing Assistant, Rehab Patient Support Tech, Therapy Aide, Caregiver) Location... in helping patients re-learn to walk, talk, dress, cook, and manage their own medical needs. You will not do it for themLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 10 Oct 2026
Retail Customer Service
Company: Sherwin-Williams |
and translates it to possibility for our people. Our people are behind the strength of our success, and we invest and support... and spaces in our world brighter and stronger. Your skills, talent and passion make it possible to live this purposeLocation: O'Fallon, MO, USA
| Salary: US$18 per hour | Date posted: 09 Oct 2026
Senior Software Engineer (go/c )
Company: Wipro |
integration, vulnerability remediation, performance certification, and production support. Use AI-assisted development tools..., and your skills. We want to see the constant evolution of our business and our industry. It has always been in our DNA - as the worldLocation: O'Fallon, MO, USA
| Salary: US$60000 - 135000 per year | Date posted: 09 Oct 2026
Campus Operations Associate - Mid Rivers
Company: The Crossing Church |
. The role provides on-site campus operations support for weekend services, weeknight classes and events. The hours... support for services, classes and events. Typical shifts are available are Sunday 7:30 am to 1:00 pm Weeknights 5:30 pmLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 09 Oct 2026
Lead Technical Program Manager
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... experience journeys, low latency (the speed it takes to authorize a payment card), high volume (think Google searches and thenLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 09 Oct 2026
General Manager
Company: Andy's Frozen Custard |
of their Andy's store in support of the Mission, Values and Culture while role modeling Andy's Standard of Excellence and taking... for all store operations, foster a run it like you own it mentality Responsible for all orders including adjusting parsLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 09 Oct 2026
Dirt Cheap - Assistant Store Manager
Company: Wallis Companies |
Our Mission is Make it Convenient! Specific focus in addition to the other Wallis Core Values: Commitment means... thoughtless promises but a deeper commitment to deliver a fast, fresh, friendly experience to our customers. It means a commitmentLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 09 Oct 2026
Phlebotomist Ii
Company: Quest Diagnostics |
. Benefits information: We are proud to offer best-in-class benefits and programs to support employees and their families... - physical, financial, and developmental. Depending on whether it is a part-time or full-time position, some of the benefitsLocation: O'Fallon, MO, USA
| Salary: US$20 per hour | Date posted: 09 Oct 2026
Senior Neo4j Knowledge Graph Architect
Company: Wipro Digital |
graph architectures. Experience designing enterprise knowledge assets that support AI-driven discovery and contextual... architectures. Experience designing enterprise knowledge assets that support AI-driven discovery and contextual retrieval. 3Location: O'Fallon, MO, USA
| Salary: US$80000 - 158000 per year | Date posted: 09 Oct 2026
Manager, Implementation
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... new and existing products / services to market from processing implementation perspective We support End-to-EndLocation: O'Fallon, MO, USA
| Salary: US$106000 - 175000 per year | Date posted: 09 Oct 2026
Retail Sales – Part Time
Company: Lowe's |
to engage with customers and help them solve their home improvement challenges. How We Support You Whether you need a part...-time position or a place to plant yourself and grow, Lowe's is ready to support your goals. As a Lowe's associate, you'llLocation: O'Fallon, MO - Saint Peters, MO, USA
| Salary: unspecified | Date posted: 08 Oct 2026
Technical Lead
Company: Wipro Digital |
development effort, and plan sprints Work with team's resources, and support team members in overcoming technical and project... challenges to complete planned work Facilitate internal technical support for your team's projects to achieveLocation: O'Fallon, MO, USA
| Salary: US$80000 - 158000 per year | Date posted: 08 Oct 2026
Lead Security Metrics Analyst
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... insights into security risk, control effectiveness, issue management, and operational performance. Build and support DataverseLocation: O'Fallon, MO, USA
| Salary: US$109000 - 180000 per year | Date posted: 08 Oct 2026
Manager Software Engineering
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalfLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 08 Oct 2026
Technical Program Manager
Company: Wipro Digital |
with industry vendors that provide technology or user experience design components that support our architecture and work..., and your skills. We want to see the constant evolution of our business and our industry. It has always been in our DNA - as the worldLocation: O'Fallon, MO, USA
| Salary: US$60000 - 135000 per year | Date posted: 08 Oct 2026
Principal , Product Management-technical
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments...-Mastercard branded financial transactions. It is a central point of connectivity that enables transaction originatorsLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 08 Oct 2026
Software Engineer I
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... that support the movement of transactions around the world. Role and Responsibilities Develop, test, maintain, and supportLocation: O'Fallon, MO, USA
| Salary: US$72000 - 115000 per year | Date posted: 08 Oct 2026
Warehouse Part Time Days
Company: Lowe's |
be there with a friendly, professional attitude. How We Support You Whether you need a part-time position or a place... to plant yourself and grow, Lowes is ready to support your goals. As a Lowes associate, youll gain access to many benefitsLocation: O'Fallon, MO - Saint Peters, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Director, Product Delivery
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... subject matter expertise and support both Customers and Internal Stakeholders (e.g., Product, Account Management, BusinessLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Director, Data Analytics
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... stakeholders. Own the end-to-end portfolio of data, analytics, and reporting initiatives to support operational excellenceLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Full Time - Sales Associate - Flooring - Day
Company: Lowe's |
to engage with customers and help them solve their home improvement challenges. How We Support You Whether you need a part...-time position or a place to plant yourself and grow, Lowe's is ready to support your goals. As a Lowe's associate, you'llLocation: O'Fallon, MO - Saint Peters, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Full Time - Sales Associate - Paint - Day
Company: Lowe's |
to engage with customers and help them solve their home improvement challenges. How We Support You Whether you need a part...-time position or a place to plant yourself and grow, Lowe's is ready to support your goals. As a Lowe's associate, you'llLocation: O'Fallon, MO - Saint Peters, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Director, Mainframe Software Engineering
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information securityLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Senior Software Engineer
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... of cloud-ready applications, microservices, and distributed systems that support large-scale payment processing platformsLocation: O'Fallon, MO, USA
| Salary: US$115000 - 184000 per year | Date posted: 07 Oct 2026
Pharmacist
Company: Walgreens |
members and other voluntary benefits 365 Get Healthy Here & Life365 Employee Assistance Program (EAP) - Mental health support... and wellness programs Family-forming support - Walgreens provides financial support for fertility treatments, including medicalLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Data Engineer Ii
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... Engineer II to design, build, and maintain data platforms and products that support credit decisioning, risk analyticsLocation: O'Fallon, MO, USA
| Salary: US$92000 - 147000 per year | Date posted: 07 Oct 2026
Full Time - Sales Associate - Millwork - Day
Company: Lowe's |
to engage with customers and help them solve their home improvement challenges. How We Support You Whether you need a part...-time position or a place to plant yourself and grow, Lowe's is ready to support your goals. As a Lowe's associate, you'llLocation: O'Fallon, MO - Saint Peters, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Manager, Software Engineering
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments... that support real-time transaction processing. Remain hands-on with design reviews, code reviews, troubleshooting, and performanceLocation: O'Fallon, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Full Time - Sales Associate - Appliances - Day
Company: Lowe's |
to engage with customers and help them solve their home improvement challenges. How We Support You Whether you need a part...-time position or a place to plant yourself and grow, Lowe's is ready to support your goals. As a Lowe's associate, you'llLocation: O'Fallon, MO - Saint Peters, MO, USA
| Salary: unspecified | Date posted: 07 Oct 2026
Software Engineer I
Company: Mastercard |
with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments..., maintain, and support secure, reliable, high-performing, and scalable software applications. You will work alongside