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Principal Engineer - Systems
St. Louis, Missouri, United States
RemoteFull Time
11+ YOE11+ years software and infrastructure engineering experience, expertise in cloud (Azure), security (MFA, SSO, MIM, OTP), distributed systems, and strong stakeholder communication and mentoring skills.
Microsoft Active Directory, Microsoft Entra, AppSec, MFA, SSO, MIM, OTP, Azure
2mo
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Principal Bridge Engineer
Saint Louis, Missouri, United States
$104k-$181k/yr OnsiteFull Time
10+ YOEBachelor's in Engineering; 10+ years experience; Professional Engineer (Civil or Structural); strong leadership, communication, and regulatory knowledge; capable of leading multidisciplinary teams.
2mo
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Principal Electrical Engineer (Engineer V)
Saint Louis or Maryland Heights
HybridFull Time
10+ YOEB.S. in Electrical Engineering, 10-15+ years experience, PE license, NEC/NESC/IEEE/ANSI expertise, hybrid work in Missouri, up to 30% travel.
3mo
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Principal Engineer I
Saint Louis, Missouri, United States
OnsiteFull Time
10+ YOELead power electronics hardware design for motor control; 10+ years in electronics and drives; EMC, reliability, safety; DFMEA; MEMS sensors; cross-functional collaboration.
Circuit simulation, PCB layout, EMC testing, DFMEA, MEMS sensors, PCBA manufacturing
2mo
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Principal Human Factors Engineer
St. Louis, Missouri, United States
OnsiteFull Time
10+ YOE3+ MgmtBachelor in Human Factors/Engineering or Psychology; advanced degree preferred; 10+ years experience; leadership experience; strong HF principles and lifecycle knowledge.
2mo
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Senior Principal Electrical Engineer
Wildwood or Anoka or St. Louis or Tucson or Raleigh
$124k-$230k/yr HybridFull Time
10+ YOEBachelor’s degree in Electrical Engineering; 10+ years (15+ preferred) in data center, power electronics, or telecom power systems; experience architecting electrical systems and leading cross-functional teams.
2mo
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Principal Software Engineer
Atlanta or Boston or Morristown or Plano or St. Louis or St. Petersburg or Hyderabad
HybridFull Time
8+ YOE8+ years backend software engineering; degree or equivalent; cloud, IaC, CI/CD; APIs; strong communication; leadership.
TypeScript, Node.js, PostgreSQL, Angular, AWS, Terraform, Elasticsearch, CI/CD, SASS
1mo
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Principal Systems Engineer
Bridgeton, Missouri, United States
$46-$65/hr HybridContract
8+ YOEBachelor's in engineering,8+ years relevant experience,active Secret clearance,experience across multiple engineering disciplines,analytical and communication skills,ability to travel ~25% CONUS.
Microsoft Word, Microsoft PowerPoint, Microsoft Excel, Microsoft Access, Microsoft Lists, Microsoft Planner, Microsoft Project, Microsoft OneNote, Microsoft SharePoint, Microsoft Teams, Corel MindManager, Windchill Risk and Reliability, DOORS
5d
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Principal Substation Engineer
Chicago or Phoenix or Charlotte or St. Louis or Marlton or Roanoke or Pittsburgh or Monroeville
$137k-$170k/yr HybridFull Time
15+ YOEBachelor's in Electrical Engineering, PE license, 15+ years substation design/project management experience (34.5–500kV), EM project management, AutoCAD/MicroStation/Inventor experience preferred.
Microsoft Project, AutoCAD, MicroStation, Inventor, SCADA
3mo
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Principal Software Engineer-Agentic AI
St Louis or Houston or Raleigh
$115k-$192k/yr OnsiteFull Time
Agentic AI systems, LLMs, orchestration (LangChain/OpenAI), tool-augmented agents, prompt engineering, AI governance, scalable architectures.
LangChain, OpenAI APIs, vector databases, embeddings
3mo
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Principal Software Engineer-Agentic AI
St Louis or Houston or Raleigh
$115k-$192k/yr OnsiteFull Time
Agentic AI design and integration, LLMs, orchestration (LangChain/OpenAI), tool-augmented agents, prompt engineering, AI governance, and scalable, reliable AI architectures.
LangChain, OpenAI APIs, LLMs, vector databases, retrieval systems, memory systems, RAG, function calling, prompt engineering
5d
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Principal, Project Delivery Engineer
Belleville, Illinois, United States
$102k-$170k/yr OnsiteFull Time
12+ YOEBachelor's in engineering required (civil/environmental preferred), PE license, 12+ years water resources engineering experience, valid driver's license, knowledge of project delivery, budget and regulatory compliance.
1w
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Sr. Principal Quality Engineer
LaVergne or Earth City
$105k-$150k/yr OnsiteFull Time
8+ YOE8+ years quality engineering experience preferred, bachelor’s degree preferred, develop/execute cleaning validation protocols, support lifecycle management, and travel 15–25% after initial period.
3w
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Principal Electrical Engineer (Bridgeton, MO, US, 63044)
Bridgeton, Missouri, United States
$104k-$141k/yr HybridFull Time
8+ YOEBachelor's in engineering, 8+ years engineering experience, power electronics design (AC-DC, DC-DC, DC-AC), familiarity with batteries/energy storage, EMI/EMC, CAD/Altium and circuit simulation, and ability to obtain DOD security clearance; U.S. citizenship required.
ALTIUM
1mo
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IT Principal Data Engineering
Saint Ann, Missouri, United States
$96k-$160k/yr OnsiteFull Time
7+ YOE7+ years experience or bachelor’s in CS/engineering/math; proven data engineering and ML platform experience with Databricks/Snowflake/Spark, cloud (AWS/Azure/GCP), Python/SQL, ML frameworks and MLOps; strong architecture and stakeholder skills.
Databricks, Snowflake, Spark, APIs, FTP, BigQuery, Teradata, Azure Synapse, AWS, Azure, GCP, Python, SQL, Power BI, scikit-learn, XGBoost, PyTorch, TensorFlow, MLflow
1mo
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Principal Network Engineer
St. Louis, Missouri, United States
OnsiteFull Time
5+ YOE5+ years WAN network engineering experience with Cisco ASR/Nexus9K, strong multicast and routing protocol knowledge, network automation/SRE familiarity, SDN/Cisco ACI/VxLAN experience, ITIL/service management and strong English communication.
Cisco ASR, Nexus9K, MPLS, VPLS, LDP, GRE, BGP, OSPF, ISIS, VRF, PIM-SM, PIM-SSM, IGMP, MVPN, MLDP, Scrum, Kanban, JIRA, Cisco ACI, VxLAN, SDN, ITIL, TCP/IP
2mo
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Warrant Technologies - Principal Solutions Architect – Digital Engineering & PLM
St. Louis, Missouri, United States
OnsiteFull Time
5+ YOEBachelor's degree in engineering or related field; 5-8+ years in engineering/manufacturing; 5+ years implementing Teamcenter; PLM, digital engineering expertise; travel up to 50%; strong communication and leadership.
Teamcenter, BMIDE, Visualization, BOM/CAD Management
1mo
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Sr. Architectural Manager and Principal or Associate Principal- Healthcare Studio
St. Louis or Chicago
HybridFull Time
20+ YOE20+ MgmtSenior leadership role driving growth for Healthcare Studio; 20+ years experience in healthcare architecture; client development and mentoring.
3w
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Principal Engineer, Engineering Productivity
Ontario or Santa Clara or St. Louis or Bengaluru or London or Paris or Melbourne or Taipei or Tokyo
OnsiteFull Time
15+ YOE15+ years software engineering experience building CI/CD platforms; expertise with Python, GoLang, Terraform, Helm, Drone/GitHub Actions, AWS, Kubernetes, Docker; BSCS required, MSCS preferred; on-call participation and leadership/mentoring experience.
Python, GoLang, Java Spring, Terraform, Helm, Drone, GitHub Actions, Spinnaker, AWS, Kubernetes, Docker
2mo
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Principal Software Engineer, Senior Architect
Purchase or O'Fallon or New York City
OnsiteFull Time
10+ YOESenior Principal Architect with enterprise-scale data architecture, cloud, SaaS integrations; strong leadership; Java, REST APIs, Kubernetes, AWS/Azure; Bachelor's in CS or Engineering.
Java, REST APIs, Middleware, AWS, Azure, Databricks, Docker, Kubernetes, Cloudera, Spark
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