23 Results for

Principal Jobs in O Fallon, MO

Jobs

New!

O Fallon, MO2 days ago

We are seeking a candidate with demonstrated depth and hands-on expertise in the following areas, with a clear focus on building, defending, and operationalizing AI security at scale: Strong, practical knowledge of AI security and regulatory frameworks, including the EU AI Act, MITRE ATLAS, and OWASP Top 10 for LLM and ML systems, with the ability to translate requirements into actionable controls. Your role will involve deep technical expertise in designing, implementing, and maintaining advanced security measures to safeguard our AI infrastructure from sophisticated threats and vulnerabilities.

Creve Coeur, MO30+ days ago

Full-time

Our purpose is bold: to bring clinical trials front and center in your community, make them accessible to everyday people, and empower underrepresented communities to participate. At Civia Health, we’re reimagining how clinical trials are delivered—by putting patients first and empowering providers to lead innovation.

Maryland Heights, Missouri30+ days ago

Guide the Engineering team in the execution of engineering activities such as: Physical substation design, including yard layouts, plans, sections and details, grounding, lightning protection, control building arrangements, interior and exterior raceways, auxiliary AC/DC power systems, and associated bills of material. They will work and lead multi-disciplined project teams to create industry-leading designs for new projects, alterations, and redevelopments on various projects, including distribution, generation, institutional, industrial, and manufacturing facilities.

St. Louis, Missouri30+ days ago

Additional offerings include accident, critical illness, long-term care, and hospital indemnity coverages, legal and identity theft protection, pet insurance, supplemental life insurances, referral bonuses, charitable donation matching, and allowances for eligible roles. For more than 30 years, NWN has helped over 5,000 CIOs deliver technology modernization programs with its Intelligent Workplace, Customer Experience (CX), Managed Devices, Cybersecurity and Public Safety, Connectivity, and Intelligent Cloud solutions.

Earth City, MO30+ days ago

$119,765–$140,900 Per Year

In addition, certain positions may also be subject to the requirements of FINRA, NMLS registration, Reg Z, Reg G, OFAC, the NFA, the FCPA, the Bank Secrecy Act, the SAFE Act, and/or federal guidelines applicable to an agreement, such as those related to ethics, safety, or operational procedures. We are seeking a Principal Systems Engineer with strong experience in software engineering, automation, cloud platforms, and identity infrastructure to help modernize and scale our enterprise platform services.

New!

Saint Louis, MO5 days ago

Remote

Full-time

In this role, you will oversee substation engineering and consulting services for clients across the U.S. You will lead multidisciplinary project teams to deliver industry-leading designs for new construction, upgrades, and redevelopment projects across distribution, generation, institutional, industrial, and manufacturing sectors. Technical LeadershipOversee advanced engineering activities, including: Physical substation design (layouts, grounding, lightning protection, control buildings, and auxiliary systems).

St. Louis, MO30+ days ago

Hands-on design and engineering experience with three or more cybersecurity tools and technologies such as (but not limited to): firewall security configuration and best practices, intrusion detection/prevention systems (IDS/IPS), endpoint protection, Security Information and Event Management (SIEM), Security Orchestration, Automation, and Response (SOAR), network security monitoring, Network micro-segmentation, Secure Access Service Edge(SASE), Cloud Native Application Protection Platform (CNAPP) . The pay range for the states of California, Colorado, Hawaii, Illinois, Maryland, Massachusetts, Minnesota, New Jersey, New York, Washington, Vermont, the District of Columbia, and the city of Cleveland is:$84,900—$221,100 USDWhat We BelieveAs a company wholly dedicated to serving the US federal government, we bring together the best talent to help reinvent how federal agencies operate and deliver greater value for their mission and the American people.

O'Fallon, MO30+ days ago

$152,000–$258,000 Per Year

Take a holistic approach to problem solving, by connecting the dots during a production event thru the various technology stack that makes up the platform, to optimize mean time to recover • Work with a global team spread across tech hubs in multiple geographies and time zones • Share knowledge and mentor junior resources All About You • BS degree in Computer Science or related technical field involving coding (e.g., physics or mathematics), or equivalent practical experience. Tech Skills: Unix, Shell Scripting, SQL, Oracle, Hadoop, Python, Apache Nifi, Splunk, Dynatrace, Jenkins, GIT, XLR , Platform, Clusters, Kafka, Big data, Grafana, Data warehousing, AWS cloud, Databricks, Power BI.

O'Fallon, MO30+ days ago

$212,000–$339,000 Per Year

In short: This role combines technical depth, strategic influence, and thought leadership to shape Mastercard’s technology landscape while mentoring engineering talent and driving innovation across the enterprise. Title and Summary Sr Principal Software Engineer Overview: This is a senior technical leadership role focused on driving innovation, architecture, and engineering excellence across Mastercard.

O'Fallon, MO30+ days ago

$200,000–$320,000 Per Year

Expert-level technical proficiency on the following tools and technologies: o Languages & Frameworks: Java, Spring (Boot, Data, Batch, REST, Cloud, AOP), Hibernate, C#, Net, Python, SQL o UI/UX: Angular, React and other JavaScript frameworks o Cloud & DevOps: AWS, Azure, Pivotal Cloud Foundry, Docker, Jenkins, CI/CD o Databases: Oracle, SQL Server, PostgreSQL, Cassandra, MongoDB, ElasticSearch o Streaming & Big Data: Kafka, Flink, Spark, Hadoop o AI/ML: TensorFlow, PyTorch, Scikit-learn, MLlib, MLflow o Tools: Eclipse/IntelliJ, Sonar, GIT, Maven, SQL Developer, Gatling • Experience working in Agile environments, leveraging modern delivery practices like Scrum, SAFe, or product-centric models. Technology Ownership • Architect and develop scalable and highly performant applications using wide range of programming languages, tools and technologies • Design and implement RESTful APIs and web services with best-in-class API tooling and design practices.

New!

Saint Louis, MOToday

$164,900–$223,100 Per Year

Position Responsibilities:Provide technical, business, and integration leadership to engineering projectsManage scope and any changes to project baselinesSupport proposal development and lead engineering execution by identifying activities, resources, and tasks required to complete the work statementDevelop and manage Statement of Work (SOW) and Supplier Statement of Work (SSOW)Define plans for risk mitigation and opportunityDefine high-level features based on business stakeholder priorities and architectural changes recommended by engineeringManage product release schedules and release activitiesAssure the development team's products effectively address program priorities while maintaining technical integrity and cost and schedule targetsAdvocate, recommend, & champion process improvements and corrective actions to address lessons learned. Preferred Qualifications (Desired Skills/Experience):Experience developing and maintaining Pilot Training DevicesExperience generating System Requirements and Statement of Work (SOW)Experience managing projects with Earned Value Management reporting requirementsExperience as an agile Product Manager, Product Owner, or Scrum MasterExperience with aircraft platforms, aviation, simulation, and training systems is beneficialExperience with agile workflow tools such as VersionOne or JIRAExperience with proposal development and contract negotiationsHardware and Network Design ExperienceSoftware Engineering Experience.

St. Louis, MO27 days ago

Remote

Part-time

Maximus compensation is based on various factors including but not limited to job location, a candidate's education, training, experience, expected quality and quantity of work, required travel (if any), external market and internal value analysis including seniority and merit systems, as well as internal pay alignment. - Lead the development, evolution, and maintenance of a real-time or near-real-time core enterprise data set that Maximus employees and leadership consume and contribute to daily-ensuring it is complete, correct, relevant, timely, and actionable.

St. Louis, MO8 days ago

Remote

$120,000–$180,000

And you've used some project management, task management, or practice management tool, so keeping track of your upcoming work and logging what you've done comes naturally to you . With expertise in both personal and business taxes, you help clients navigate complex tax landscapes, ensuring compliance while maximizing financial opportunities.

Maryland Heights, MO17 days ago

Beyond our connectivity solutions, we also provide local news, programming and regional sports via Spectrum Networks and multiscreen advertising solutions via Spectrum Reach. Lead technical management and operational oversight of Spectrum billing systems across production, development, testing and training environments.

St. Louis, MO30+ days ago

This role will work closely with business stakeholders, executive leaders, Enterprise and cross-enterprise strategy partners, the finance team, and product and growth leaders for the purpose of achieving long-term strategy and short-term results in the most optimal way. + Drive inorganic and cross-enterprise business development projects in coordination with executive leadership, strategy development, business and finance leaders, and prepare and present executive level briefings on progress and outcomes.

Kirkwood, MO30+ days ago

$77,400–$116,200 Per Year

In addition, AT&T will provide reasonable accommodations for qualified individuals with disabilities. Weekly Hours:

Hazelwood, MO30 days ago

$165,000–$225,000 Per Year

In addition, bioMérieux offers a competitive Total Rewards package that may include: · A choice of medical (including prescription), dental, and vision plans providing nationwide coverage and telemedicine options · Company-Provided Life and Accidental Death Insurance · Short and Long-Term Disability Insurance · Retirement Plan including a generous non-discretionary employer contribution and employer match. This role defines and governs long-term technology strategy across cloud, data, and analytics domains, ensuring alignment with modern software design, regulatory compliance—including requirements specific to in vitro diagnostic (IVD) devices—and industry regulations.

St. Louis, Missouri22 days ago

Strategic Communication & Business Insight: Effectively interprets and communicates key business drivers, including Quarterly Strategic Business Plans, territory market share trends, procedure volumes per physician, and training progress of successfully implanting physicians. This role serves as a trusted advisor to customers by combining deep product expertise with strong business acumen, identifying opportunities to expand therapy utilization, elevate clinical education, and strengthen long-term customer relationships.

St. Louis, MO29 days ago

Remote

Full-time

Maximus compensation is based on various factors including but not limited to job location, a candidate's education, training, experience, expected quality and quantity of work, required travel (if any), external market and internal value analysis including seniority and merit systems, as well as internal pay alignment. - Define and enforce test strategies for data migrations, including unit testing, data reconciliation testing, performance testing, and business validation.

Maryland Heights, Missouri30+ days ago

St. Louis, MO30+ days ago

Reporting to the School Principal, the Elementary Assistant Guide’s role is to provide guidance and continuity for an instructional program delivered with both Montessori and an anti-bias/anti-racist pedagogy. Assistant Guides are also crucial in modeling courteous and respectful behavior as well as contributing to the warm, supportive, and calm atmosphere that is the hallmark of an authentic Montessori environment.

St. Louis, MO30+ days ago

Recruiting staff to create an inclusive organization is a priority, and we encourage applicants from all cultures, races, ethnicities, religions, sexes, national or regional origins, ages, disability status, sexual orientations, gender identities, military or veteran status, or other statuses protected by law. • With the age of students ranging from age 21⁄2 to 6 years, this role may require assisting with toileting, including the cleanup of bathroom messes, and nap time for the youngest of students.

St. Louis, MO25 days ago

The Assistant Guide will be required to work in collaboration with classroom Lead Guides to assess students’ academic needs and proficiency, assist them in setting goals, connect them to appropriate resources, and provide ongoing support by assisting and strengthening student learning. • 2+ years of working with adolescents 12 years of age and older in a classroom setting or in an after school programs or club setting, camps, detention centers, and/or volunteer activities; previous experience in a Junior High or High school age classroom preferred.

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