NewPrincipal Financial Analyst Protective Life CorporationPrincipal Financial AnalystChesterfield, MO$125,000–$160,000 / yearThis highly visible role will partner with executive leadership and cross-functional business teams to deliver financial insights, forecasting, profitability analysis, and strategic decision support that drives business performance and profitable growth. Protective is seeking a Principal, Financial Reporting to serve as a strategic finance leader and trusted advisor supporting the Asset Protection Division (APD).
NewPrincipal Financial Analyst ProtectivePrincipal Financial AnalystChesterfield, MO$125,000–$160,000 / yearThis highly visible role will partner with executive leadership and cross-functional business teams to deliver financial insights, forecasting, profitability analysis, and strategic decision support that drives business performance and profitable growth. Protective is seeking a Principal, Financial Reporting to serve as a strategic finance leader and trusted advisor supporting the Asset Protection Division (APD).
NewPrincipal Software Engineer Mastercard IncPrincipal Software EngineerO'Fallon, MO$170,000–$281,000 / yearAll 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. Reporting to the SVP of Developer Enablement within the Services Enablement & Transformation (SET) organization, you will move to wherever the need is greatest, adding senior engineering capacity during critical spikes, accelerating roadmaps, and helping teams adopt modern, AI-first practices.
Principal Project Engineer LancesoftPrincipal Project EngineerSt. Louis, MO$110.34YOUR ROLE: Provide senior-level project engineering and technical expertise to ensure successful project delivery of life science projects. Experience with life science capital projects design and build of clean rooms and classified (grade C/D) spaces and qualification and validation processes.
Principal Project Engineer Life Sciences Pyramid Consulting, IncPrincipal Project Engineer Life SciencesSt. Louis, MO$90–$120 / hourKey Responsibilities: The client is looking for a senior-level Principal Project Engineer with strong Life Sciences/Pharmaceutical facility project execution experience , rather than a purely design-focused engineer. Provide senior-level project engineering and technical expertise to ensure successful project delivery of life science projects.
Principal project engineer Manpower EngineeringPrincipal project engineerSt. Louis, MOTemporaryp> ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2022 ManpowerGroup was named one of the World's Most Ethical Companies for the 13th year - all confirming our position as the brand of choice for in-demand talent.
Principal Database Architect Data Platforms ApolisPrincipal Database Architect Data PlatformsSt. Louis, MO$55–$60 / hourWe are seeking a highly experienced Principal Database Architect / Senior Oracle Database Engineer to design, engineer, and operate enterprise database platforms while driving modernization, automation, cloud adoption, and database transformation initiatives . The ideal candidate will serve as a technical leader and subject matter expert across Oracle database platforms, contributing to enterprise database strategy while ensuring scalability, reliability, security, performance, and cost optimization.
PRINCIPAL PROJECT ENGINEER LancesoftPRINCIPAL PROJECT ENGINEERSt. Louis, MO$85Experience with life science capital projects design and build of clean rooms and classified (grade C/D) spaces and qualification and validation processes. Provide senior-level project engineering and technical expertise to ensure successful project delivery of life science projects.
Principal Software Developer Kafka Leidos Holdings IncPrincipal Software Developer KafkaMO$131,300–$237,350 / yearResponsibilities: Architect, design, develop, and implement next-generation application using software engineering best practices in the latest technologies: AI-Leveraged Development (agentic coding tools like Claude Code, multi-agent orchestration, MCP-based tool integration, RAG, context engineering, AI evals/guardrails). 3+ years of combined hands-on experience designing, developing, and supporting Apache Kafka or other streaming data solutions in production environments, including event-driven architectures, topic design, scalability, reliability, and performance optimization.
AI Principal Engineer VOYA Financial Inc.AI Principal EngineerWork@Home, MORemote$149,820–$198,370 / yearOperating with a high degree of independence, the AI Principal Engineer partners closely with product, engineering, data, and governance stakeholders to deliver scalable, reliable, and secure AI solutions in a highly regulated environment. In addition to base salary, Voya offers incentive opportunities (i.e., annual cash incentives, sales incentives, and/or long-term incentives) based on the role to reward the achievement of annual performance objectives.
Principal Project Engineer – Life Sciences Pyramid, IncPrincipal Project Engineer – Life SciencesSt. Louis, MO$90–$120 / hourFull timeKey Responsibilities: The client is looking for a senior-level Principal Project Engineer with strong Life Sciences/Pharmaceutical facility project execution experience , rather than a purely design-focused engineer. Provide senior-level project engineering and technical expertise to ensure successful project delivery of life science projects.
Assistant Teacher City Garden MontessoriAssistant TeacherSt. Louis, MO$19–$21.50 / hourReporting 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.
NewPrincipal Product Manager Radiology Pacs - Remote UnitedHealth Group Inc.Principal Product Manager Radiology Pacs - RemoteSaint Louis, MORemote$112,700–$193,200 / yearThis role will drive the transformation of radiology imaging workflows by delivering scalable, secure, and AI-enabled solutions that improve radiologist productivity, enhance clinical outcomes, and support enterprise-wide imaging strategies. Serve as the subject matter expert for radiology imaging workflows across outpatient imaging centers, community hospitals, and large integrated delivery networks.
Principal Transmission Engineer FindTalentPrincipal Transmission EngineerUniversity City, MissouriThe ideal candidate will have a strong understanding of transmission systems, as well as experience in the design, construction, and maintenance of transmission lines. Work with other engineers, contractors, and stakeholders to ensure the successful completion of projects.
Principal Engineer - Systems Enterprise HoldingsPrincipal Engineer - SystemsSt. Louis, MissouriRemoteFull timeWTT responsibilities include physical and virtual devices (desktops/laptops, tablets, payment, printers, virtual workstations, etc.), workforce/productivity applications (email, unified communications, collaboration, etc.), identity solutions (Active Directory, Entra, AppSec, etc.), security capabilities (endpoint protection, secure coding tools, risk database, etc.), and related applications (AppSec, Startup Page, etc.). Enterprise Mobility and its affiliates offer extensive car rental, carsharing, truck rental, fleet management, retail car sales, as well as travel management and other transportation services, to make travel easier and more convenient for customers.
NewPrincipal Model-Based Systems Engineer ArcfieldPrincipal Model-Based Systems EngineerSaint Louis, MissouriFull timeThere are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. As an on-site Principal Model-Based Systems Engineer, you will act as the subject matter expert in model management, administering and maintaining a federated set of SysML models in Teamwork Cloud (TWC) across multiple classification levels.
NewVehicle Management Systems Architect (Lead or Principal) BoeingVehicle Management Systems Architect (Lead or Principal)Berkeley, MissouriThe 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 Boeing Company Boeing Defense, Space & Security (BDS) Flight Systems Engineering Capability is currently seeking a Lead-Architect Vehicle Management Systems Hardware Engineer to join the Air Dominance Vehicle Management System (VMS), team located in Berkeley, MO.
Senior Principal, Data Engineering MasterCardSenior Principal, Data EngineeringO'fallon, MO$244,000–$390,000 / yearAll 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. The ideal candidate is a builder at heart, someone who enjoys writing code, solving complex engineering challenges, driving platform modernization initiatives, and partnering with globally distributed engineering teams to deliver measurable business impact.
Principal Strategic Communications Consultant HDR, Inc.Principal Strategic Communications ConsultantSaint Louis, MOOur 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. This individual will be responsible for embedding strategic communication leadership early in the project lifecycle to manage risk, align messaging, and support critical permitting, siting, and program execution activities.
Principal AI Platform Engineer - AI Center Of Excellence MasterCardPrincipal AI Platform Engineer - AI Center Of ExcellenceO'fallon, MO$195,000–$323,000 / yearAll 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. Lead RFI and RFP processes for AI infrastructure components, including CPU, GPU, storage, and networking, defining technical and commercial evaluation criteria, reviewing vendor responses, and driving fact based selection decisions in partnership with sourcing and finance teams.