Principal Machine Learning Engineer Expert In Recruitment SolutionsPrincipal Machine Learning EngineerPhiladelphia, PAThis role will primarily focus on building, validating, deploying, and improving machine learning models , while also bringing principal-level judgment to problem definition, model design, stakeholder engagement, and production readiness. Hands-On Model Development Build, test, validate, and improve machine learning models for scoring, prediction, prioritization, risk detection, engagement, intervention targeting, and decision support.
Lead/Principal .NET Azure Engineer Expert In Recruitment SolutionsLead/Principal .NET Azure EngineerWilmington, DEExperience leading technical projects and mentoring developers. Key Responsibilities Analyze existing applications and refactor code for scalability and maintainability.
Principal Front End Developer Expert In Recruitment SolutionsPrincipal Front End DeveloperPhiladelphia, PAMulti-brand/multi-tenant platforms; GraphQL/REST APIs. OAuth2/OIDC (FusionAuth, Auth0, Okta, Azure AD).
Principal Engineer / Architect Expert In Recruitment SolutionsPrincipal Engineer / ArchitectMalvern, PAYou will architect solutions that protect emerging product lines—including debit card and payments offerings—from Client fraud vectors, while remaining hands-on in code and system design. - 12+ years in software engineering with 5+ years focused on fraud prevention, payments, or banking technology.
Principal Solutions Architect (Databricks) Blue Orange Digital LLCPrincipal Solutions Architect (Databricks)Philadelphia, PAYou can whiteboard a multi-workspace Unity Catalog governance model, explain when Photon earns its cost, diagnose a skewed join from a Spark UI screenshot, and reason about Delta Lake file layout and liquid clustering under real workloads. Hands-on command of Spark, Delta Lake, Unity Catalog, Databricks Workflows, Delta Live Tables, MLflow, and Mosaic AI, plus fluency in at least one major cloud (AWS, Azure, or GCP) and infrastructure as code.
Principal, General Servicing Lakeview Loan ServicingPrincipal, General ServicingHorsham, PennsylvaniaRemote$128,000–$145,000 / yearFull timeReporting to the Director of Servicing Product, this role operates within the broader servicing product structure and brings shared-services domain expertise into requirements definition, workflow validation, testing support, and implementation discussions to ensure that platform functionality accurately reflects real-world servicing operations, regulatory expectations, and vendor dependencies. Instead, this position is designed for a deeply experienced servicing subject matter expert who understands, in detail, how shared servicing infrastructure enables consistent execution across borrower communications, vendor interactions, and cross-domain workflows, and can translate that expertise into scalable product capabilities.
Managing Principal HDR IncManaging PrincipalPhiladelphia, PAUnited States-Pennsylvania-Philadelphia'',''United States-Pennsylvania-Philadelphia'','''','''','''','''','''','''','''','''',''Architecture'',''Architecture'',''Full-time'',''Full-time'',''Regular'',''Regular'','''','''',''Gen Architecture'',''Gen Architecture'',''Apr 22, 2026'',''Apr 22, 2026'',''false'',''781593'',''781593'',''true'',''781593'',''false'',''Submission for the position: Managing Principal - (Job Number: 192608)'',''false'',''781593'',''false'',''true''. This individual will oversee and direct the activities of personnel within the office including implementing annual plans, marketing strategies, public relations, project planning, financial planning and management, staff planning and oversight and other related matters.
SAP S/4 MRP Application Architect (Principal) Yantran LLCSAP S/4 MRP Application Architect (Principal)NEWTOWN SQUARE, PAThese roles require close collaboration with supply chain stakeholders during on-site workshops, along with remote configuration and documentation activities. Travel required for discovery sessions, process workshops, integration testing, and pilot deployment.
Principal Data Engineer GTT, LLCPrincipal Data EngineerPhiladelphia, PAThe Principal Data Engineer will own the design, delivery, and maturity of production-grade data pipelines and data platforms, with a primary emphasis on real-time streaming, IoT telemetry, Databricks, Azure, data services for APIs and microservices, and reliable data products for downstream consumption. The ideal candidate should be comfortable spending significant time working directly with Databricks, Spark, SQL, Python/PySpark, Azure services, streaming architectures, data quality frameworks, pipeline automation, CI/CD, and production troubleshooting.
SAP S/4 EPPM SME (Principal) - Remote with Travel The Dignify Solutions, LLCSAP S/4 EPPM SME (Principal) - Remote with TravelNewtown Square, PARemoteDesigns how project and portfolio performance is reviewed with real-time data from financial controlling and human resource management. Principal SAP S/4HANA architect for Enterprise Portfolio and Project Management (EPPM).
Senior Principal Scientist, Veterinary Pathology Board Certified Merck & Co IncSenior Principal Scientist, Veterinary Pathology Board CertifiedWest Point, PA$231,900–$365,000 / yearRequired Skills: Analytical Assays, Analytical Assays, Assay Development, Biomedical Sciences, Biotechnology, Clinical Assays, Clinical Data Interpretation, Clinical Judgment, Clinical Safety, Drug Development, Drug Discovery Research, Drug Research, Histopathology, Immunochemistry, Immunology Research, Innovation, In Vitro Research, In Vivo Models, Laboratory Processes, Medical Biology, Molecular Diagnostic Techniques, Pathogenesis, Pharmaceutical Research, Post Mortem Analysis, Safety Pharmacology {+ 3 more}. Our Company's Research Laboratories nonclinical drug safety department at West Point, Pennsylvania site is seeking an experienced anatomic pathologist to join a highly collaborative team of scientists (12 anatomic pathologists, 3 clinical pathologists, and approximately 40 exceptional laboratory scientists), working at a GLP-compliant facility with state-of-the-art anatomic, molecular and clinical pathology laboratories.
Experienced Structural Engineer | Associate Principal Wiss Janney Elstner AssociatesExperienced Structural Engineer | Associate PrincipalPhiladelphia, Pennsylvania$110,700–$184,500 / yearTechnical leadership, including applying sound engineering judgement and a deep understanding of governing codes, design guidelines, and industry practices; collaborating with interdisciplinary project teams across WJE as the structural engineering subject-matter expert (SME); leveraging your expertise for a variety of structural engineering projects, including the investigation, design, analysis, repair, and renovation of new and existing structures, construction materials, loading conditions, and construction types; preparing technically excellent client deliverables; providing high-quality reviews and oversight of work by others; and performing and training others in hands-on fieldwork. Minimum twenty years of relevant structural engineering industry experience, including technical and project management (e.g., failure/damage investigation; non-destructive evaluation and instrumentation; structural analysis and design for repair, retrofit, and rehabilitation of existing structures; evaluation of parking garage structures; and/or specialty consulting of new systems and materials from design through construction).
Principal Product Designer Chegg, Inc.Principal Product DesignerTrenton, New JerseyWe need someone who operates at the intersection of product strategy, design craft, and AI-first delivery: a person who can determine which problems are worth solving, turn that into a plan the team can build, and bring it to life through design, rapid prototyping, and real user testing. Use a variety of techniques (one-on-one user interviews, rapid prototypes built with AI coding tools, and whatever else works) to validate and invalidate a wide breadth of ideas quickly and cheaply.
Principal Scientist (Director) - Outcomes Research Merck & Co IncPrincipal Scientist (Director) - Outcomes ResearchNorth Wales, PA$190,800–$300,300 / yearPrimary Responsibilities: This position has primary responsibility for planning/managing a comprehensive program of real-world evidence and non-interventional research activities for in-line and pipeline products for lung cancers to meet the value evidence needs of clinicians, payers, policymakers, health technology assessment (HTA)/reimbursement agencies, and health systems globally. The following skills and knowledge are needed to be successful in this role: Decision making: Identifying and understanding problems and opportunities by gathering, analyzing and interpreting quantitative and qualitative information; choosing the best course of action by establishing clear decision criteria, generating and evaluating alternatives, and making timely decisions; taking action that is consistent with available facts and constraints and optimizes probable consequences.
Principal Scientist, Translational Omics GSK plcPrincipal Scientist, Translational OmicsCollegeville, PAYou will lead and contribute to the analysis and integration of cutting edge high dimensional multi-omic data, including single cell and spatial transcriptomics, proteomics, metabolomics and lipidomics to derive insights that will impact GSK pipeline decisions. GSK fosters a culture ambitious for patients, accountable for impact, and committed to doing the right thing, making sure that we focus our efforts on accelerating significant assets that meet patients' needs and have the highest probability of success.
Principal Scientist, Veterinary Pathology Board Certified Merck & Co IncPrincipal Scientist, Veterinary Pathology Board CertifiedWest Point, PA$210,400–$331,100 / yearRequired Skills: Autopsy, Autopsy, Biomarker Assay Development, Biopharmaceuticals, Biotechnology, Clinical Assays, Clinical Data Interpretation, Clinical Judgment, Clinical Safety, Clinical Toxicology, Data Generation, Detail-Oriented, Disease Diagnosis, Drug Development, Drug Discovery Research, Drug Research, Early Phase Clinical Trials, Ethical Compliance, Experimental Pathology, Experimentation, Histopathology, Interpersonal Management, In Vitro Research, Laboratory Management, Laboratory Processes {+ 9 more}. Our Company's Research Laboratories' nonclinical safety assessment group at the West Point, Pennsylvania site is seeking an anatomic pathologist to join a highly collaborative team of scientists (12 anatomic pathologists, 3 clinical pathologists, and approximately 40 exceptional laboratory scientists), working at a GLP-compliant facility with state-of-the-art anatomic, molecular and clinical pathology laboratories.
Associate Principal Scientist, Toxicology/Study Director Merck & Co IncAssociate Principal Scientist, Toxicology/Study DirectorWest Point, PA$142,400–$224,100 / yearRequired Skills: Animal Studies, Effective Written Communication, Evaluate Information, Good Laboratory Practices (GLPs), Oral Communications, Proactive Thinking, Study Directing, Study Monitoring, Teamwork, Toxicology. Our toxicologists provide scientific leadership in the design and overall conduct of in vivo studies and integrate the findings from all contributing scientists into reports that characterize the safety profile of drug candidates.
Principal Technologist (Req#1227) ePlus TechnologyPrincipal Technologist (Req#1227)King Of Prussia, PA$160,000–$210,000 / yearThe position requires a strong understanding of how technology drives business outcomes and enables the development of strategies aligned to customer objectives The Principal Technologist will be involved in the entire sales cycle, including leading meetings to discuss key business and technology issues, assess clients' needs and identify the ePlus targeted product and service solutions that best meet those needs. 8 or more years of experience in designing or implementing complex networks, systems/storage solutions and ability to articulate deep technical knowledge of infrastructure services, data center design and cloud integration for enterprise customers.
Principal AI/ML Engineer (Large Language Model) (TS/SCI) {S} ARKA Group, L.P.Principal AI/ML Engineer (Large Language Model) (TS/SCI) {S}King Of Prussia, PennsylvaniaExperience leading an interdisciplinary team of researchers and software developers and working with a program manager to define project scope and schedule to ensure we meet project milestones as defined by our customers. Situated less than an hour outside of Philadelphia and hosting the largest mall on the east coast, King of Prussia offers the urban feel sought in the city, while also giving opportunities to experience the beauty and history found only in Pennsylvania.
Principal Software Engineer (TS/SCI) {S} ARKA Group, L.P.Principal Software Engineer (TS/SCI) {S}King Of Prussia, PennsylvaniaBeyond direct design, the architect is expected to drive technical consensus through trade studies, proactively identify and mitigate technical risks, act as the primary technical interface to leadership, government customers, and sub-contractor CA/CE’s, and actively participate in the mentorship and growth of the distributed engineering team, ultimately joining our team to help shape the development and delivery of custom solutions and providing significant opportunities for personal skill development at ARKA. ARKA is seeking an accomplished Software Architect/Principal Software Engineer who is deeply customer mission-focused and passionate about providing strategic technical leadership in the software architecture and design of complex government systems, requiring proven experience leading programs involving 30+ developers in a distributed environment.