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23 principal designer jobs at 15 companies in Hamilton, OH

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Principal CAD/BIM Designer
Cincinnati or Louisville or Columbus or Nashville
OnsiteFull Time
Hazen and Sawyer
Hazen and Sawyer: Environmental engineering firm specialized in water infrastructure services.
7+ YOEBachelor's with 7+ years (or associate/technical cert with 10+ years), proficiency in Autodesk Revit and Autodesk FORMA/ACC, AutoCAD/Civil 3D preferred, experience leading contract drawings and mentoring designers.
Autodesk Revit, Autodesk FORMA, Autodesk Construction Cloud (ACC), AutoCAD, Civil 3D
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4w
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Sr. Principal Engineer
Cincinnati, Ohio, United States
$175k-$263k/yr OnsiteFull Time
Green Dot Corporation
Green Dot CorporationNYSE: GDOT: Public U.S. fintech bank holding providing banking and payment services to consumers and businesses.
6+ YOEBachelor's degree plus six years experience; expertise in cloud-native development, CI/CD, scalable distributed systems, API design, and test-driven development.
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2mo
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Senior Principal Mechanical Engineer
Wright-Patterson Air Force Base, Ohio, United States
HybridFull Time
Modern Technology Solutions, Inc.
Modern Technology Solutions, Inc.: Engineering services and technology solutions for national security.
10+ YOE10–15+ years engineering experience (varies by degree), active SECRET clearance (able to obtain TOP SECRET), experience with aircraft subsystem design, MIL-HDBK-516C familiarity, and strong communications and analytical skills.
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Senior Principal Mechanical Engineer
Wright-Patterson AFB, Ohio, United States
HybridFull Time
Modern Technology Solutions, Inc.
Modern Technology Solutions, Inc.: Engineering services and technology solutions for national security.
10+ YOEProvide design, integration, test, and airworthiness support for aircraft subsystems (ECS, APU, fire protection); apply MIL-HDBK-516C and regulatory compliance; possess active SECRET clearance and ability to obtain TOP SECRET.
MIL-HDBK-516C, FARs, NPRMs, ADs, AMOCs
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3mo
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Principal Radar Systems Engineer
Dayton or Woburn
$204k-$284k/yr OnsiteFull Time
Systems & Technology Research
Systems & Technology Research: Advanced research and development for national security and defense.
10+ YOETen years of radar systems engineering experience; active Secret clearance with eligibility for Top Secret. Proficient in radar design, modeling, and cross-functional integration.
MATLAB, C, C++, Python, SysML, Cameo
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1mo
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Principal Engineer
Lebanon, Ohio, United States
$140k-$155k/yr HybridFull Time
Kadant Black Clawson
Kadant Black Clawson: Industrial fiber-processing equipment supplier serving pulp and paper producers with recycling, pulping, cleaning, and screening systems.
15+ YOEBachelor’s in mechanical engineering, 15+ years industrial machine design experience, technical leadership, SolidWorks and ANSYS proficiency, strong machine design and analytical skills, 10-15% travel.
SolidWorks, ANSYS, Microsoft Office, FEA, FMEA, DFM/DFA, AI
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2mo
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Principal Mechanical Engineer
Beavercreek, Ohio, United States
$92k-$162k/yr OnsiteFull Time
Attalon
Attalon: Private U.S. defense technology manufacturing optical, laser, coating, and thermal systems for aerospace and defense customers.
10+ YOEExpertise in opto-mechanical subsystem design, CAD modeling, structural/thermal/dynamic analysis (FEA/STOP), systems engineering, design for manufacturing, team leadership, and documentation for defense applications.
SOLIDWORKS, Solidworks PDM, Femap, NX Nastran, Simcenter 3D, Mathcad, MATLAB, Star CCM+, SigFit
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2w
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Principal Substation Engineer
Chicago or Phoenix or Charlotte or St. Louis or Marlton or Roanoke or Monroeville or Boise or Kansas City or Columbus or Cleveland or Cincinnati or Madison or Ann Arbor or Kalamazoo or Salt Lake City or United States
$147k-$175k/yr RemoteFull Time
Gannett Fleming
Gannett Fleming: Infrastructure engineering, design, and construction management firm.
15+ YOEBachelor's in Electrical Engineering, professional engineer license, and 15+ years in power and utility design, engineering, and project management; high-voltage substation experience required.
Microsoft Project, AutoCAD, MicroStation, Inventor
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1mo
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Principal DeltaV Automation Engineer
Maumee or Cincinnati or Indianapolis or Peachtree City or Overland Park or Edina or Raleigh or Westminster
$150k-$180k/yr OnsiteFull Time
Matrix Technologies
Matrix Technologies: 100% employee-owned industrial engineering and automation firm delivering full-lifecycle project solutions to manufacturers.
10+ YOEBachelor's in Engineering or equivalent,10+ years Emerson DeltaV experience,DeltaV SME with design, implementation, commissioning, and technical leadership experience.
DeltaV Control Studio, DeltaV Operate, DeltaV Diagnostics, DeltaV Continuous Historian, DeltaV Live, DeltaV Batch, DeltaV System Architecture, ISA-88 Batch Methodology, DeltaV PK Controller, DeltaV SIS, Syncade, Virtualized DeltaV Environments, Electronic Marshalling / CHARMS, M-Series and S-Series Controllers, Ethernet I/O Card (EIOC), Emerson DeltaV
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Roadway Engineer - Sr. / Principal (Remote)
United States or Tennessee or Georgia or North Carolina or Virginia or Indiana or Detroit or Indianapolis or Cincinnati or Atlanta
$104k-$181k/yr RemoteFull Time
Parsons
ParsonsNYSE: PSN: Technology and engineering solutions for defense and infrastructure.
10+ YOEBachelor's in Civil Engineering, PE required, 10+ years related experience, DOT roadway design and CAD proficiency, ability to develop contract documents, analyze designs, mentor staff, and lead project delivery.
CAD
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3w
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Senior Principal Mechanical Design Engineer
Mason, Ohio, United States
OnsiteFull Time
Stress Engineering Services
Stress Engineering Services: Employee-owned engineering consulting firm providing design, analysis, testing, and technical solutions for industrial and technology clients.
15+ YOERequires an engineering bachelor's degree, PE license, 15+ years developing regulated medical devices, FDA product development and Design Controls expertise, team leadership, risk management, verification, validation, and client-facing consulting.
SolidWorks, Python, MATLAB, Minitab, JMP, ISO 14971, ISO 13485, IEC 60601, FDA, Design Controls, Design for Manufacturability (DFM), Design for Assembly (DFA), Product Lifecycle Management
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3mo
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Principal Platform Engineer- Customer Communication Orchestration
Cincinnati, Ohio, United States
HybridFull Time
Worldpay
Worldpay: Global leader in payment technology and merchant solutions.
10+ YOE10+ years designing and implementing RESTful and SOAP APIs with Java/Python; front-end tech; databases; AWS; Spring/Vue.js; extensive integration and security work.
Java, Python, Postman, Swagger, Bruno, AWS, EKS, MSK, Snowflake, Vue.js, JSP, HTML, CSS, Ajax, JQuery, Oracle, PostgreSQL, Cassandra, MySQL, DB2, Tomcat, WebSphere, Spring, Spring Boot, Hibernate, Struts
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1mo
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Animatronic - Principal Mechanical Engineer (In-Office)
Cincinnati, Ohio, United States
OnsiteFull Time
LF Studios
LF Studios: Private U.S. fabrication studio creating animatronics, sculpted elements, exhibits, and interactive experiences for attractions and museums.
9+ YOE3+ MgmtBachelor's in mechanical engineering, 9 years mechanical design experience, 4 years animatronic experience, 3 years leadership, SolidWorks, FEA, RBDs, FMEA, DFM, HA proficiency.
SolidWorks, FEA, RBDs, FMEAs, DFM, HA
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2w
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Senior Principal Systems Engineer (RF Communications)
Cincinnati, Ohio, United States
$129k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Global aerospace and defense technology.
8+ YOEBachelor's in engineering or STEM plus 8 years, master's plus 6, or PhD plus 3; recent RF design, engineering leadership, technical project execution, U.S. citizenship, and active Top Secret clearance required.
Cameo, MATLAB, Digital Signal Processing (DSP)
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2w
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Senior Principal Systems Engineer (RF Communications)
Cincinnati, Ohio, United States
$129k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Global aerospace and defense technology.
8+ YOEEngineering or STEM degree plus 8 years, master's plus 6, or PhD plus 3; recent RF design experience, engineering team leadership, technical project assessment, US citizenship, and active Top Secret clearance.
Cameo, MATLAB, Digital Signal Processing (DSP)
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2mo
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Principal AI Architect for Business Systems
Dayton or Westminster
$100k-$137k/yr OnsiteFull Time
Trimble
TrimbleNASDAQ: TRMB: Providing technology solutions that connect the physical and digital worlds.
8+ YOE8+ years technology experience with 3–5+ years in AI/ML or GenAI architecture; expertise with Google Gemini/GCP (Vertex AI, BigQuery, Cloud Functions), LLMs, RAG, agents, MLOps/ModelOps, Oracle and Salesforce integrations, RPA, API design, and Agile tools (JIRA/Confluence).
AWS, Azure, Google Gemini, Google Cloud Platform (GCP), Vertex AI, BigQuery, Cloud Functions, APIs, IAM, n8n, Model Context Protocol (MCP), LLMs, RAG, Oracle Fusion, Salesforce, JIRA, Confluence, UiPath, Automation Anywhere, Oracle Fusion AI Studio, Oracle OCI, Salesforce Einstein, Agentforce, Mulesoft, MLOps, ModelOps
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2mo
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Principal Systems Engineer (Beavercreek, OH, US, 45431)
Beavercreek, Ohio, United States
OnsiteFull Time
Leonardo DRS
Leonardo DRSNASDAQ: DRS: Provider of advanced defense technologies and mission systems.
8+ YOEBachelor's degree in engineering or related field, minimum 8 years' experience, U.S. citizenship, active DoD security clearance (or ability to obtain), multidisciplinary engineering knowledge, design and mentorship experience.
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