2,497 Results for

Senior Jobs in O Fallon, MO

Jobs

Senior Product Security Engineer Boeing

Berkeley, Missouri

$162,350–$219,650 / year

The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. Responsibilities include conducting thorough security assessments, advising on risk mitigation, coordinating with internal and external partners to define cybersecurity requirements, and executing validation activities to support program certification and regulatory compliance.

27 days ago

Senior Electrical Design and Analysis Engineer Boeing

Berkeley, Missouri

$129,200–$174,800 / year

The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. Bachelor of Science degree in Engineering (with a focus in Electrical, Mechanical or Aeronautical), Computer Science, Data Science, Mathematics, Physics, Chemistry or non-US equivalent qualifications directly related to the work statement.

30 days ago

Sr. Technical Recruiter - Professional Services and Consulting Job | Esri Career Opportunity Environmental Systems Research Institute Inc

St. Louis, MO

$86,528–$142,792 / year

Compensation decisions and the base range for this role take into account many factors including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs. We are seeking a Senior Recruiter with a successful track record of identifying, engaging, and closing executive level candidates; someone to grow and drive recruitment efforts across multiple teams.

30+ days ago

Senior Specialist, Payroll Tax & M&A Integration Mastercard Inc

O'Fallon, MO

$85,000–$132,000 / year

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. This role serves as the payroll tax subject matter expert throughout the M&A lifecycle, ensuring tax compliance, regulatory readiness, employee tax setup accuracy, and successful integration into payroll operations.

30+ days ago

Senior Talent Acquisition Partner (Technology) Reinsurance Group of America Inc

Chesterfield, MO

$89,310–$134,870 / year

Act as a primary talent consultant to technology leaders and hiring managers, successfully leading and orchestrating all aspects of the full life cycle recruiting processes across the Technology organization, supporting other lines of business as needed. Collaborate closely with hiring managers, conducting deep-dive intake sessions to understand the technical requirements and nuances of specific roles in-depth, along with broader organizational goals and future team needs.

13 days ago

Senior AI Engineer Mastercard Inc

O'Fallon, MO

$115,000–$184,000 / year

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. Design and operationalize multimodal generative AI pipelines that unify text, image, tabular, and graph data using transformer-based architectures (BERT, CLIP, LLaVA, T5, Whisper, GPT-4o, Gemini) for rich, cross-modal intelligence.

30+ days ago

Senior Sales Manager HRI Hospitality

Saint Charles, Missouri

Generate leads and new business through internet searches, telephone and email solicitations, mailings, referrals, networking, trade shows, professional and community organizations, sales, blitzes, etc. Analyze historical, current and future hotel/market trends and develop strategies to maximize occupancy and average rate of hotel through creative and selective selling.

9 days ago

OT Cybersecurity Senior Manager Accenture Plc

St. Louis, MO

Accenture is a leading solutions and services company that helps the world's leading enterprises reinvent by building their digital core and unleashing the power of AI to create value at speed across the enterprise, bringing together the talent of our approximately 800,000 people, our proprietary assets and platforms, and deep ecosystem relationships. Our OT Security practice delivers program-scale cybersecurity outcomes to critical infrastructure owners across energy, utilities, oil & gas, manufacturing, water, and life sciences-combining deep domain expertise with the scale and innovation that only Accenture can bring.

30+ days ago

Senior Engineering Manager CLEAResult Consulting, Inc.

$125,200–$187,700 / year

As a Senior Engineering Manager, you lead initiatives that deliver cost savings to end-users and reduce emissions across a portfolio of more than 85 gas and electric programs throughout the Midwest, with a focus on. Any offered salary is determined based on internal equity, internal salary ranges, market data/ranges, applicant's skills and prior relevant experience, certain degrees and certifications (e.g.

7 days ago

Senior Analyst, Private Debt & Equity Operations Reinsurance Group of America Inc

Chesterfield, MO

$89,310–$134,870 / year

Required: Bachelor's Degree in Arts/Sciences (BA/BS) Finance, Accounting, Economics, or related field AND 4+ years of investment operations experience with demonstrated proficiency in private debt, private equity, or illiquid asset lifecycle servicing within an insurance company, asset manager, reinsurer, or institutional investment organization. The Senior Analyst, Private Debt & Equity Operations is an experienced operational professional responsible for the execution of illiquid asset lifecycle servicing workflows across asset onboarding, data collection and document management, ongoing servicing, cash and position reconciliation, and transfer processing.

16 days ago

Guidance Navigation & Control Engineer (Experienced or Senior) Boeing

Hazelwood, Missouri

$115,600–$156,400 / year

The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. These roles will support new product design, development, integration and flight test supporting the areas of guidance, modeling and simulation, flight control and subsystem control for the expanding Air Dominance Portfolio; F-15, F/A-18, MQ-25, T-7A as well as new proprietary air dominance programs.

30+ days ago

Senior Payroll Associate Alberici Corp

Saint Louis, MO

Alberici is a North American company with multiple Operating Companies: Alberici Constructors, Inc., Alberici Constructors, LTD., Alberici Construcciones, BRC, CAS Constructors, Filanc, Flintco, Hillsdale Fabricators, and Kienlen Constructors. Louis, Missouri with more than 1,200 employees and nearing $2B in revenue, Alberici is a diversified construction company that partners with leading organizations throughout North America to build their most challenging and important projects.

14 days ago

Activities Manager: Senior Living Provision Living

Sappington, MO

As the Activities Manager, reporting directly to the Executive Director you will support the community activities by planning, organizing and facilitating a program of activities, which include physical, emotional, educational, spiritual, and leisure stimulation for resident's participation. Responsibilities include interviewing, hiring and training employees; planning, assigning and directing work; appraising performance; rewarding and disciplining employees; addressing complaints and resolving problems.

9 days ago

Senior Electrical Power Engineer HDR Inc

St Louis, MO

United States-Missouri-St Louis'',''United States-Missouri-St Louis'','''','''','''','''','''','''','''','''',''Power'',''Power'',''Part-time'',''Part-time'',''Temporary'',''Temporary'','''','''',''Power Generation'',''Power Generation'',''Oct 14, 2026'',''Oct 14, 2026'',''false'',''792526'',''792526'',''true'',''792526'',''false'',''Submission for the position: Senior Electrical Power Engineer - (Job Number: 196956)'',''false'',''792526'',''false'',''true''. Our eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ+, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute.

15 days ago

Project Engineer (Senior or Lead) The Boeing Co

Saint Charles, MO

$136,850–$185,150 / year

The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. The programs we support in Saint Charles, MO include Direct Attack weapons (JDAM, SDB, MOP, HAAWC and associated derivatives) and Cruise Missiles (SLAM ER, Harpoon and development weapons) utilized on various military aircraft, some ground-based platforms, and other future contract awards.

27 days ago

Test and Inspection Embedded Software Engineer (Experienced or Senior) The Boeing Co

St Louis, MO

$126,650–$171,350 / year

Preferred Qualifications (Desired Skills/Experience): Level 4: Bachelor of Science degree from an accredited course of study in engineering, engineering technology (includes manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science and 9+ years of related work experience OR Bachelor's Degree and 13+ years of directly related work experience OR 17+ years of related, relevant experience. The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work.

20 days ago

Senior Product Development Business Partner - Liability Allianz SE

O'Fallon, MO

$100,000–$140,000 / year

A minimum of 3 years of experience in Property & Casualty; Experience in commercial insurance product development, forms, underwriting, compliance support, or a related discipline; Demonstrated experience drafting, reviewing, maintaining, or implementing insurance policy forms; Ability to coordinate across multiple functions without duplicating or assuming ownership of those functions; Experience collaborating across Product Development, Underwriting, Legal, Claims, Compliance, Regulatory, Governance, and other insurance functions; Strong written communication, analytical, and issue-spotting skills; Ability to exercise sound judgment regarding when issues should be resolved within Product Development and when escalation to another function is appropriate; Ability to build and foster relationships internally across the organization; Experience in applying artificial intelligence (AI) and machine learning (ML) to improve business processes and decision-making is highly beneficial. The Chief Technical Office (CTO) is responsible for working with technical functions including Pricing, Product Management, Underwriting Integrity, Reinsurance, Portfolio and Accumulation Steering including Catastrophe Management, and Risk Consulting to ensure we are building Technical Excellence across our North America region, and in alignment with the overall global approach.

16 days ago

Assurance Senior - Financial Services Group (FSG) CliftonLarsonAllen LLP

St Louis, MO

In this role, you will work closely with financial institution clients, delivering high-quality audit, review, and compilation services while serving as a trusted advisor and mentor to team members. How you'll create opportunities in this Assurance Senior role: Participate in audit, review, and compilation engagements serving financial institution clients.

30+ days ago

Senior Software Engineer Iconma LLC

O'Fallon, MO

The team is primarily responsible for Cloud, Backend, and AI-native Engineering, requiring strong hands-on AWS expertise and backend engineering experience building microservices in Golang and deploying them on Amazon ECS using Fargate on ARM64 architecture. The role also involves integrating mobile SDKs with backend APIs and troubleshooting complex end-to-end integration issues across mobile front ends, backend microservices, AWS ECS, and AgentCore Runtime environments.

14 days ago

Senior Legal Assistant - Contract Law Graybar Electric Co Inc

Clayton, MO

Let us know you're interested in a future opportunity by clicking Introduce Yourself in the top-right corner of the page or create an account to set up email alerts as new job postings become available that meet your interest! In this role you will: Provide corporate legal support to resolve complex contract and transactional matters by organizing, reviewing and preparing documents and maintaining relevant files.

30+ days ago

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Senior Jobs in O Fallon, MO

Senior Product Security Engineer Boeing

Senior Electrical Design and Analysis Engineer Boeing

Sr. Technical Recruiter - Professional Services and Consulting Job | Esri Career Opportunity Environmental Systems Research Institute Inc

Senior Specialist, Payroll Tax & M&A Integration Mastercard Inc

Senior Talent Acquisition Partner (Technology) Reinsurance Group of America Inc

Senior AI Engineer Mastercard Inc

Senior Sales Manager HRI Hospitality

OT Cybersecurity Senior Manager Accenture Plc

Senior Engineering Manager CLEAResult Consulting, Inc.

Senior Analyst, Private Debt & Equity Operations Reinsurance Group of America Inc

Guidance Navigation & Control Engineer (Experienced or Senior) Boeing

Senior Payroll Associate Alberici Corp

Activities Manager: Senior Living Provision Living

Senior Electrical Power Engineer HDR Inc

Project Engineer (Senior or Lead) The Boeing Co

Test and Inspection Embedded Software Engineer (Experienced or Senior) The Boeing Co

Senior Product Development Business Partner - Liability Allianz SE

Assurance Senior - Financial Services Group (FSG) CliftonLarsonAllen LLP

Senior Software Engineer Iconma LLC

Senior Legal Assistant - Contract Law Graybar Electric Co Inc

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