Staff Scientist - Oncology Washington University in St LouisStaff Scientist - OncologySt. Louis, MO$48,000–$86,900 / yearUsing unbiased genome-wide CRISPR/Cas9 guide RNA library screens and whole kinome analyses, we have identified promising novel therapeutic targets such as VLDLR, GAS6/TAM, and PKN1 whose targeting may separate the inflammatory diseases from the beneficial healthy immune responses, such as graft-vs-leukemia/tumor effects, anti-tumor and anti-infection responses. The Choi Lab is seeking a Staff Scientist to work on T cell biology in mouse models of diseases, including, but not limited to, graft-vs-host disease (GvHD), inflammatory bowel disease (IBD), and/or experimental autoimmune encephalomyelitis (EAE).
Staff Scientist - Neurosurgery Washington University in St LouisStaff Scientist - NeurosurgerySt. Louis, MO$48,000–$86,900 / yearThe researcher will perform and optimize complex laboratory procedures including tissue and blood processing, multiparameter flow cytometry, immunofluorescence and immunohistochemical staining, cell culture, CAR-T cell functional assays, cytokine analyses, molecular biology techniques, and animal tumor studies. The Staff Scientist will provide advanced technical support for translational immunology and neuro-oncology research focused on T-cell trafficking, tumor immunology, and CAR-T cell therapy for brain tumors.
NewStaff Scientist - Developmental Biology Washington University in St LouisStaff Scientist - Developmental BiologySt. Louis, MO$48,000–$86,900 / yearOur research integrates zebrafish genetics, human iPSC-derived neuronal models, single-cell genomics, advanced imaging, and functional assays to identify repair-associated cell states and therapeutic targets that promote neuronal survival, axon regeneration, and recovery after spinal cord injury. The Staff Scientist will establish and optimize human iPSC-derived neuronal models, develop assays to investigate vesicular trafficking and activity-dependent neuronal repair, integrate mammalian systems with discoveries from zebrafish regeneration, and provide technical leadership and mentoring in advanced neuronal culture and imaging methodologies.
Staff Scientist - Anesthesiology Washington University in St LouisStaff Scientist - AnesthesiologySt. Louis, MO$48,000–$86,900 / yearConduct and supervise behavioral experiments using advanced techniques including fiber photometry, optogenetics, and chemo genetics to measure and manipulate neural activity during stress-coping paradigms; maintain detailed, organized experimental records and databases. Primary Duties & Responsibilities: In collaboration with the Principal Investigator, design and develop research protocols for behavioral neuroscience studies in rodent models, including experimental design, data collection procedures, and quality assurance frameworks for data management.
Associate Staff Scientist BiofireAssociate Staff ScientistHazelwood, MO$92,000–$135,000 / yearIn 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 provides hands-on chemistry expertise in formulation development, including sol-gel, polymer, indicator, and reagent systems, while partnering closely with microbiology, engineering, data science, industrialization, manufacturing, and quality teams.
Staff Scientist - Radiation Oncology Washington University in St LouisStaff Scientist - Radiation OncologySt. Louis, MO$48,000–$86,900 / yearThe screenings will include criminal background check and, as applicable for the position, other background checks, drug screen, an employment and education or licensure/certification verification, physical examination, certain vaccinations and/or governmental registry checks. If you are unable to use our online application system and would like an accommodation, please email CandidateQuestions@wustl.edu or call the dedicated accommodation inquiry number at 314-935-1149 and leave a voicemail with the nature of your request.
Staff Scientist - Nephrology Washington University in St LouisStaff Scientist - NephrologySt. Louis, MO$48,000–$86,900 / yearWe are using cutting-edge research approaches, including stably transfected or knock-down cells, molecular and cell biology, biochemistry, inducible transgenic, conditional knock-out and CRISPR generated knock-in mouse models, human iPSCs derived from patients, and state-of-the-art in vitro & in vivo imaging techniques. The overall goals of our research are to delineate the molecular mechanisms underlying ER stress-mediated kidney diseases, including nephrotic syndrome (NS), Alport syndrome, autosomal dominant tubulointerstitial kidney disease (ADTKD) and other acquired forms of ER disease, to develop ER stress biomarkers in human patients, and to identify ER stress modulators.
staff-environmental-scientist-natural-resources-chesterfield-mo-columbus-oh Burns & McDonnellstaff-environmental-scientist-natural-resources-chesterfield-mo-columbus-ohChesterfield, MOThe Staff Environmental Scientist will work with the office's Natural & Cultural Resources group in our Environmental Services Global Practice to perform the following duties: Conduct environmental compliance audits, Best Management Practices (BMP) inspections, prepare permitting applications and analyze environmental data for various types of projects, including renewable projects, high-voltage transmission line routing, oil and gas facilities, power generation construction activities. Minimum of 4 years of related professional experience required (6 years preferred) completing environmental field audits, surveys, inspections, assessments, analyzing GIS data, and preparing associated environmental assessments and permitting documents.
NewAssociate Scientist Integrated Resources, IncAssociate ScientistChesterfield, MissouriContractorAdditional InformationCandidates will work with fellow scientists to designing and executing experiments including small-scale studies, and pilot plant and manufacturing studies in a variety of types and scales of equipment from bench top to pilot-scale, and, as required, technology transfer and validation in commercial plants. Job DescriptionThe successful applicant will support the development of innovative, robust, efficient, and scalable chemical and biochemical processes and technologies required for the advancement of a diverse and extensive portfolio of bio-conjugate- and polytide-derived biotherapeutic.
Data Scientist - Mid Level active TS/SCI Leidos Holdings IncData Scientist - Mid Level active TS/SCISt. Louis, MO$59,150–$106,925 / yearCollaborate with senior data scientists, database developers, and analysts to implement and sustain updated database processes and workflows. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Senior CMC Regulatory Affairs Scientist Actalent IncSenior CMC Regulatory Affairs ScientistBridgeton, MORemote$53–$72.12 / hourThe position serves as a technical-regulatory expert, partnering closely with R&D, pharmaceutical development, industrial operations, and external partners to optimize regulatory strategies, streamline data use globally, and support both pre- and post-approval activities. The Senior CMC Regulatory Affairs Scientist leads the design and evaluation of chemistry, manufacturing, and controls (CMC) studies to meet regulatory requirements and defines robust regulatory strategies for United States submissions.
NewScientist I Analytical Chemist Eurofins Scientific SEScientist I Analytical ChemistSaint Charles, MOIt is one of the market leaders in certain testing and laboratory services for genomics, discovery pharmacology, forensics, advanced material sciences and in the support of clinical studies, as well as having an emerging global presence in Contract Development and Manufacturing Organizations. Eurofins Scientific is an international life sciences company, providing a unique range of analytical testing services to clients across multiple industries, to make life and our environment safer, healthier and more sustainable.
Data Scientist - Mid Level active TS/SCI LeidosData Scientist - Mid Level active TS/SCISaint Louis, MissouriJuly 14, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Collaborate with senior data scientists, database developers, and analysts to implement and sustain updated database processes and workflows.
NewClinical-Scientific - Bench Scientist I Integrated Resources, IncClinical-Scientific - Bench Scientist IChesterfield, MissouriContractorWorking within a team setting, the successful applicant will support the development of innovative, robust, efficient, and scalable chemical and biochemical processes and technologies required for the advancement of a diverse and extensive portfolio of bio-conjugate- and polytide-derived bio therapeutics. The position will focus on providing analytical support for process characterization studies, but may also support fellow scientist in design and execution of experiments and the necessary purification activities to produce drug substances with appropriate quality attributes.
NewAnalytical R&D Scientist Integrated Resources, IncAnalytical R&D ScientistChesterfield, MissouriContractorQualifications• Associate or BS degree in any science related discipline with 1-3 years of related experience or MS degree with 0-2 years preferred• 1-3 years of experience in wet chemistry or analytical instrumentation Primary roles include SDS-PAGE analysis, HPLC analysis, buffer preparation and routine testing (appearance, pH, moisture, concentration by UV, colorimetric assay).•
NewBench Scientist Integrated Resources, IncBench ScientistChesterfield, MissouriContractorJob Description• Proficient with wet chemistry and analytical instrumentation (emphasis on proteins desired)• Primary roles include SDS-PAGE analysis, buffer preparation and routine testing (appearance, pH, moisture, concentration by UV, colorimetric assay, etc.) for a high throughput Protein Analytics laboratory. Bench ScientistA Few Words About Us - Integrated Resources, Inc is a premier staffing firm recognized as one of the tri-states most well-respected professional specialty firms.
Payer Healthcare Data Scientist, Manager PricewaterhouseCoopers LLPPayer Healthcare Data Scientist, ManagerMO$99,000–$232,000 / yearAs part of the Operations Consulting team, you will apply advanced data science and machine learning techniques to large-scale claims, clinical, and member data to surface actionable insights that reduce cost of care and improve population health outcomes for our payer clients. PwC does not intend to hire experienced or entry level job seekers who will need, now or in the future, PwC sponsorship through the H-1B lottery, except as set forth within the following policy: https://pwc.to/H-1B-Lottery-Policy .
Environmental Scientist - Fenton, MO Tetra Tech IncEnvironmental Scientist - Fenton, MOFenton, MOOur 25,000 employees work together to provide clear solutions to complex problems by Leading with Science to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition. About Tetra Tech: Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high-end consulting and engineering services for projects worldwide.
Senior Scientist Terracon Consultants IncSenior ScientistSt Louis, MOThis role serves as a senior technical resource and project leader responsible for managing complex projects involving asbestos, lead-based paint, mold, indoor environmental quality (IEQ), radon, and other environmental health concerns impacting buildings and facility occupants. The successful candidate will provide technical leadership, mentor staff, develop client relationships, and contribute to business growth while ensuring projects are completed safely, on time, and within budget.
Medical Laboratory Scientist MLS II - PRN BJC HealthCareMedical Laboratory Scientist MLS II - PRNFlorissant, MOThe Medical Technologist (MT) or Medical Laboratory Scientist (MLS) II performs specimen processing and routine / complex testing on blood and other specimens which requires a knowledge and understanding of quality control, basic instrument maintenance, and procedure methodologies and reference ranges. Christian was nationally ranked as "high performing" in the clinical specialty of geriatrics and in the following seven of 21 common procedures and conditions: heart attack, heart failure, kidney failure, diabetes, COPD, pneumonia and stroke.
Medical Laboratory Scientist - MLS II BJC HealthCareMedical Laboratory Scientist - MLS IIO'Fallon, MOPoint of Care Testing provides immediate diagnostics for emergency situations and On-site patient testing services include: Chemistry -- Hematology, Blood Bank -- Coagulation, Urinalysis, Clinical Microscopy Mobile Care Units used for bedside, in-patient blood work, patient identification, and accurate specimen labeling. Progress West Hospital also provides surgical services, endoscopy services, a cardiac catheterization lab, medical/surgical inpatient services, diagnostic imaging, lab services, and the Advanced Wound Center, a specialty wound treatment facility with state-of-the-art equipment.
Medical Laboratory Scientist - MLS II (Part-Time, Nights) BJC HealthCareMedical Laboratory Scientist - MLS II (Part-Time, Nights)MOThe Medical Technologist (MT) or Medical Laboratory Scientist (MLS) II performs specimen processing and routine / complex testing on blood and other specimens which requires a knowledge and understanding of quality control, basic instrument maintenance, and procedure methodologies and reference ranges. Join our Laboratory Team at Barnes-Jewish West County Hospital to be an integral part of delivering precise and reliable laboratory results that impact patient outcomes positively.
NewMedical Laboratory Scientist -MLS - II (Dayshift) BJC HealthCareMedical Laboratory Scientist -MLS - II (Dayshift)Saint Louis, MOThe Medical Technologist (MT) or Medical Laboratory Scientist (MLS) II performs specimen processing and routine / complex testing on blood and other specimens which requires a knowledge and understanding of quality control, basic instrument maintenance, and procedure methodologies and reference ranges. Louis County, offers a full continuum of medical and surgical services, including heart care, cancer, women and infants, breast health, gastrointestinal, orthopedic, stroke, therapy, wound and pain management services.
NewMedical Laboratory Scientist MLS II BJC HealthCareMedical Laboratory Scientist MLS IISaint Louis, MOThe Medical Technologist (MT) or Medical Laboratory Scientist (MLS) II performs specimen processing and routine / complex testing on blood and other specimens which requires a knowledge and understanding of quality control, basic instrument maintenance, and procedure methodologies and reference ranges. Christian was nationally ranked as "high performing" in the clinical specialty of geriatrics and in the following seven of 21 common procedures and conditions: heart attack, heart failure, kidney failure, diabetes, COPD, pneumonia and stroke.
Senior Bioanalytical Chemist - Scientist II Eurofins Scientific SESenior Bioanalytical Chemist - Scientist IISaint Charles, MOIt is one of the market leaders in certain testing and laboratory services for genomics, discovery pharmacology, forensics, advanced material sciences and in the support of clinical studies, as well as having an emerging global presence in Contract Development and Manufacturing Organisations. Basic Minimum Qualifications (BMQ): Direct/ Demonstrated experience with Liquid Chromatography- Mass Spectrometry (LC-MS) in a contract research organization or industry laboratory in one or more of the following areas: Bioanalytical Method Development for Small and/or Large Molecules.
Research Scientist InotivResearch ScientistSaint Louis, MissouriThe Research Scientist is responsible for conducting bioanalytical laboratory work, including sample preparation, LC-MS/MS analysis, data review, reporting, method development, method qualification, sample analysis and other study related activities in support of bioanalytical studies, and study support activities while ensuring compliance with SOPs, applicable regulations, and safety requirements. Notifying the Lab Manager and / or Principal Investigator of any deviations from the study protocol/SOPs/Best Practices or unexpected processes preventing the proper completion of bioanalysis and documented as required.
PROJECT GEOLOGIST / PROJECT ENVIRONMENTAL SCIENTIST Broadbent & Associates, IncPROJECT GEOLOGIST / PROJECT ENVIRONMENTAL SCIENTISTSt. Louis, MOFull timeThree or more years of experience in geological assessments, water supply, water treatment, environmental assessments, contaminant investigation, contaminant remediation, storm water management, wastewater treatment, permitting projects, or compliance projects in the public and private sectors . We provide professional services throughout the United States to energy companies, mining operations, agricultural industry, municipalities, private industries, governmental agencies, public and private utilities, and developers.
Research Scientist Inotiv, IncResearch ScientistSt. Louis, MOThe Research Scientist is responsible for conducting bioanalytical laboratory work, including sample preparation, LC-MS/MS analysis, data review, reporting, method development, method qualification, sample analysis and other study related activities in support of bioanalytical studies, and study support activities while ensuring compliance with SOPs, applicable regulations, and safety requirements. Notifying the Lab Manager and / or Principal Investigator of any deviations from the study protocol/SOPs/Best Practices or unexpected processes preventing the proper completion of bioanalysis and documented as required.
New**Research Scientist** 30-35/HR Actalent Inc**Research Scientist** 30-35/HRMO$30–$35 / hourWe are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing winner for both client and talent service. If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email actalentaccommodation@actalentservices.com for other accommodation options.
Research Scientist Actalent IncResearch ScientistMO$30–$35 / hourWe are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing winner for both client and talent service. If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email actalentaccommodation@actalentservices.com for other accommodation options.
NewApplied AI Staff Engineer TalTeam, IncApplied AI Staff EngineerSt. Louis, MissouriFull timeYou will work closely with product managers, software engineers, data scientists, and ML engineers to build robust backend services, data-intensive applications, and production AI systems. Staff Applied AI EngineerWe are looking for a Staff Applied AI Engineer to build scalable, production-grade backend applications that leverage large and complex datasets.
Applied AI Staff Engineer TalteamApplied AI Staff EngineerSt. Louis, MOYou will work closely with product managers, software engineers, data scientists, and ML engineers to build robust backend services, data-intensive applications, and production AI systems. • Strong SQL skills and experience working with relational databases; familiarity with NoSQL databases or modern data storage technologies is a plus.
Staff Development Engineer - Fulfillment CVS Health CorpStaff Development Engineer - FulfillmentMO$106,605–$284,280 / yearCollaborate closely with engineering, platform, and business teams to deliver cost optimized, scalable solutions-leveraging cloud cost profiling tools, storage tiering strategies, service right sizing, and architectural simplification. Apply advanced software engineering practices across the full SDLC-including domain driven design (DDD), design patterns, secure coding, automated testing strategies (unit, contract, integration), code quality gates, trunk based development, and continuous observability.
Senior Project Manager - Remediation Enginuity AdvantageSenior Project Manager - RemediationBallwin, MOAs Senior Project Manager, you will be the primary technical and project lead on complex remediation engagements, including large Phase IIs, brownfield redevelopment, and LSRP/risk-based closure programs. Our client is a growing environmental consulting and contracting firm with a clear sense of purpose: helping businesses and organizations navigate the complexities of environmental compliance, manage risk, and unlock the value in their land and facilities.
C-brAIn Chief Executive Officer (Remote) - Neurology Washington University in St LouisC-brAIn Chief Executive Officer (Remote) - NeurologyMORemoteLouis and supported by leading institutions across academia, industry, and philanthropy, C-brAIn is advancing a transformative vision: to accelerate breakthroughs in neuroscience, brain aging, and neurodegenerative disease through the development of an AI-powered, scientist-in-the loop research platform. Demonstrated success in building and scaling large, complex, multi-stakeholder initiatives or organizations-including experience in startup or consortium environments where agility, resourcefulness, and collaborative leadership are essential.