76 principal engineer jobs at 27 companies in Thomaston, CT
5d
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Principal Engineer, General Engineering (Onsite)
East Hartford, Connecticut, United States
$108k-$205k/yr OnsiteFull Time
8+ YOEBachelor's degree in mechanical or aerospace engineering, 8+ years of engineering experience or 5+ with an advanced degree, and U.S. citizenship required.
2w
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Transportation Principal Engineer (Engineering)
Newington, Connecticut, United States
$130k-$182k/yr HybridFull Time
9+ YOE1+ MgmtRequires nine years of complex transportation engineering experience, including one year supervising transportation engineering design projects, PE licensure, and a valid driver's license may be required.
FEMA Flood Insurance Studies (FIS), National Flood Insurance Program (NFIP)
2mo
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Principal Mechanical Engineer - Instruments
Orange or Sunnyvale
$220k-$330k/yr OnsiteFull Time
15+ YOEBachelor’s or Master’s in Engineering; 15+ years medical device exp; advanced mechanical instrument development; regulatory compliance; design leadership and mentorship.
Mechanical Engineering, Robotics, Medical Devices, Regulatory Compliance
1mo
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Principal Engineer, Transmission System Planning (Hybrid Schedule)
Westwood or Hartford or Berlin
$151k-$168k/yr HybridFull Time
10+ YOEMaster's in engineering required, 10+ years transmission planning and simulation experience, advanced power system modeling skills, PE preferred, proficiency with PSSE/PSCAD and programming (Python/VBA).
PSSE, PSCAD, Microsoft Office 365, Word, Microsoft Excel, Visio, SharePoint, OneDrive, Python, VBA, ASPEN Oneliner, EMTP (ATP), TARA, PI Processbook, Electronic Medical Records (EMR)
2mo
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Principal Engineer/Scientist - MA Licensed Site Professional
Wakefield or Boston or Braintree or Clifton Park or Manchester or Middletown or Portland or Springfield
$131k-$223k/yr HybridFull Time
15+ YOEMassachusetts Licensed Site Professional; 15+ years environmental consulting; BS in Engineering/Geology/Hydrogeology; Massachusetts market experience; active LSP certification.
4d
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Principal Engineer
New York City or Stamford or United States or Europe
$180k-$230k/yr HybridFull Time
8+ YOEBachelor's degree required; 8+ years engineering experience, including 3+ years in engineering leadership. Requires English communication, internet technology knowledge, SRE experience, and willingness to travel.
Content Delivery Network (CDN), TCP/IP, TLS, HTTP, DNS, BGP, SRE
2mo
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Principal Engineer - Commercial Nuclear (Remote) (Danbury, CT, US, 06810-8147)
Danbury, Connecticut, United States
RemoteFull Time
8+ YOEBachelor's degree in Electrical Engineering; 8+ years in electronic system design; experience with processors, FPGA, CGID, NRC regs; US citizenship required; remote work option.
Cadence OrCAD, Microsoft Office Suite (Word, Excel, Visio, PowerPoint), Xilinx ISE, Altera, Actel/Microsemi Libero
2mo
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Principal Engineer (USA - Stamford, CT, US)
Stamford, Connecticut, United States
$108k-$165k/yr OnsiteFull Time
8+ YOEMS or PhD in engineering/chemistry, 8+ years in specialty chemicals with mining applications, hands-on lab/pilot/industrial flotation experience, experimental design and data analysis skills, ability to commercialize technologies and travel up to 40%.
2mo
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Water Infrastructure Principal Engineer
Foxborough or Providence or Rocky Hill
$158k-$204k/yr HybridFull Time
15+ YOEBachelor's in Civil/Environmental Engineering required, Masters preferred; PE registration (CT or obtain within 6 months); 15+ years engineering experience; business development, client relations, and MS Office proficiency; valid driver’s license.
Microsoft Office
2mo
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Principal Engineer - Product
Simsbury, Connecticut, United States
OnsiteFull Time
5+ YOEBS in Electrical Engineering, 5+ years RF/microwave experience to 2 GHz, DC/RF simulation and RF PCB design experience, proficiency with test equipment and Excel, strong problem solving; ability to obtain Secret clearance and US citizenship/permanent residency required.
DC and RF circuit simulators, network analyzers, spectrum analyzers, signal analyzers, oscilloscopes, Microsoft Windows, Microsoft Office, Microsoft Excel, ADS, HFSS, Altium, ANSYS
4d
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Principal Engineer - Protection & Control
Orange, Connecticut, United States
$141k-$176k/yr OnsiteFull Time
10+ YOEBachelor’s degree in Electrical Engineering or Technology, 10+ years of relevant experience, PE certification or eligibility, power-system protection expertise, and ASPEN OneLiner experience.
ASPEN OneLiner, ASPEN Line Database, IEC-61850, NESC, FERC, NERC, NPCC, NYISO, ISO-NE, NY PSC, ME PUC, CT PUC
5d
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Principal Transportation Engineer / Planner
New Haven, Connecticut, United States
HybridFull Time
15+ YOEBachelor’s or Master’s degree in transportation engineering, planning, or related field; 15+ years’ experience; PE license or transportation certification; driver’s license; communication, leadership, project management, and travel capability.
HCS, SYNCHRO, SimTraffic, VISSIM, CADD, GIS
1mo
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Principal Engineer – RIE Module Engineering
Hopewell Junction, New York, United States
$114k-$194k/yr OnsiteFull Time
10+ YOEBachelor's in engineering,10+ years semiconductor manufacturing with 7+ years RIE/module roles; expertise in plasma etch, SPC, DOE, FDC, APC, yield analysis, RCA, FMEA and strong data analytics.
SPC, DOE, Fault Detection and Classification (FDC), Advanced Process Control (APC), FMEA, TEL, Lam Research
3w
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Principal Reliability Engineer - EDS
Hartford or Charlotte or Columbus or Chicago or United States
$153k-$229k/yr HybridFull Time
10+ YOE10+ years in data/cloud/platform/SRE with leadership; experience with Snowflake, EMR/Hadoop, AWS/GCP, Terraform/CloudFormation, Python, observability and SLO/SLI frameworks; US work authorization required.
AWS, GCP, Snowflake, EMR, Hadoop, ETL/ELT, Kubernetes, Terraform, CloudFormation, Python, CI/CD, Prometheus, Grafana, Datadog, Splunk, Dynatrace, OpenTelemetry, AWS Bedrock, SageMaker, Vertex AI
3mo
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Principal Engineer Software - Storage (Chronosphere)
Burbank or Denver or Chicago or Austin or Jacksonville or Hartford or Bridgeport or Seattle or Boston or New York City
$147k-$238k/yr RemoteAll Commitments Available
Design and build scalable backend services for high-volume telemetry data; strong backend skills; cloud infra experience; API design; mentorship.
Go, Java, Python, Rust, AWS, GCP, Azure, REST, gRPC, GraphQL
2w
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Principal Embedded Software Engineer
New Haven, Connecticut, United States
$180k-$220k/yr OnsiteFull Time
Extensive embedded systems experience, deep C/C++ and Python skills, RTOS and real-time control expertise, firmware-to-hardware lifecycle ownership, PCB/CAD/fabrication experience, and comfort in wet-lab hardware environments.
C, C++, FreeRTOS, Zephyr, Python, Altium, KiCad, SolidWorks, Onshape, I²C, SPI, UART, RS-485/Modbus RTU, CAN/CANopen, EtherCAT, USB, Ethernet, oscilloscope, logic analyzer, SWD/JTAG, Yocto, Buildroot, PREEMPT_RT, systemd, ROS 2, LabVIEW, AWS
2mo
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Principal Engineer/Scientist - MA Licensed Site Professional
Wakefield or Boston or Braintree or Clifton Park or Manchester or Middletown or Portland or Springfield
$131k-$223k/yr HybridFull Time
15+ YOEBachelor's in engineering/geology/hydrogeology, active Massachusetts Licensed Site Professional (LSP), 15+ years environmental consulting experience in Massachusetts; PE/PG/CT LSP preferred; ability to lead teams, prepare investigation and remedial plans, and serve as LSP-of-record.
3w
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Principal AI Engineer
Charlotte or Chicago or Columbus or Hartford
$168k-$253k/yr HybridFull Time
10+ YOEBachelor's degree in a technical field; 10+ years with cloud and software/platform infrastructure; Python and TypeScript; distributed systems, AI platforms, MLOps, RAG, vector search, and enterprise engineering.
Amazon Web Services (AWS), Google Cloud, Microsoft Azure, Python, TypeScript, CI/CD, Agile, LangGraph, crewai, NoSQL, ETL, RAG, ANN, KNN
2mo
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AI Principal Engineer
Boston or Hartford or Missouri
$192k-$240k/yr OnsiteFull Time
Bachelor's in CS/Engineering/Math required (advanced degree preferred). Significant experience delivering production AI/ML systems, proficiency with Python/TypeScript/Rust, LLM and MLOps knowledge, model lifecycle and MLOps practices, and leadership of technical initiatives.
Python, TypeScript, Rust, LLM, MLOps
1mo
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Principal Intelligent Transportation Systems Engineer / Senior Project Manager
New York City or Woodbury or Hartford or Rocky Hill
$155k-$210k/yr HybridFull Time
15+ YOEPE in NY, Bachelor’s in engineering, 15+ years ITS/traffic experience, leadership and client-development experience, familiarity with NTCIP/NEMA/IEEE/NEC, MicroStation and CADD, and ability to manage large multidisciplinary projects.
MicroStation, CADD, Microsoft Office
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