26 principal engineer jobs at 20 companies in Hampton Bays, NY
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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
2w
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GTF HPC – Principal Engineer, Design (Onsite)
Middletown, Connecticut, United States
$108k-$205k/yr OnsiteFull Time
5+ YOEBachelor’s degree in mechanical or aerospace engineering with 8+ years of mechanical design experience, or advanced degree with 5+ years. Requires hardware, blueprint, and manufacturing experience and U.S. citizenship.
FEA, Teamcenter, NX
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Principal Systems Engineer /Sr Principal Systems Engineer
Groton or Quonset Point
$109k-$163k/yr FieldFull Time
5+ YOEBachelor's degree in a STEM field required, U.S. citizenship and active U.S. Government Secret clearance required, 5+ years (Principal) or 8+ years (Sr Principal) relevant experience, willingness to travel up to 25% and work rotating/periodic shifts.
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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.
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Engineer, Principal
East Farmingdale, New York, United States
OnsiteFull Time
10+ YOEBS in Electrical Engineering, 10+ years circuit board design experience, U.S. citizenship and ability to obtain DoD security clearance, expertise in digital/mixed‑signal design, schematic capture, PCB layout, and FPGA/DSP interfacing.
PADS Design, PADS Layout, PADS Router, VHDL, Atlassian Tool Suite, Serial RapidIO (SRIO), PCI, VME, VPX
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Principal Engineer - Design
Hauppauge, New York, United States
$75k-$232k/yr OnsiteFull Time
10+ YOEBachelor's in Electrical Engineering or equivalent,10+ years relevant experience,Verilog/System Verilog proficiency,experience with Ethernet/USB/PCIe and ASIC design/verification,strong problem solving and communication skills.
Verilog, System Verilog, Xilinx FPGA
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Principal Engineer, Mechanical - Nuclear
Charlotte or Stonington
OnsiteFull Time
15+ YOEABET BS in Mechanical Engineering, PE license (preferred), 15+ years relevant nuclear engineering experience, ability to pass security screening, proficiency with Microsoft Office, strong communication and leadership skills.
PEPSE, Computational Fluid Dynamics (CFD), ASME Section III Code, ASME Section VIII Code, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
3mo
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CES Principal Hardware Engineer
Greenlawn, New York, United States
$129k-$219k/yr OnsiteFull Time
8+ YOE8+ years with analog, processor and high-speed digital circuit card assemblies; manufacturing and production data analytics experience; ability to research electrical engineering problems; strong problem-solving, communication, and leadership; able to obtain/hold Secret clearance.
Digital transceiver, Ethernet, 1553, Serial Communications, Built in Test, embedded systems
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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
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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
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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.
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Principal Architect
Melville, New York, United States
$170k-$190k/yr OnsiteFull Time
10+ YOE10+ years software engineering with principal/staff architecture experience, strong AWS cloud architecture, Java backend and Angular frontend experience, data systems (Postgres/Oracle), expertise designing AI/LLM integrations and AI development lifecycle, compliance-minded design (PCI/PII), strong communication and documentation skills.
AWS, Java, Angular, Postgres, Oracle
3mo
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Principal Scientist – Antibody Discovery/Protein Design
Branford, Connecticut, United States
OnsiteFull Time
5+ YOEPhD in biochemistry, computational biology, or structural biology with 5+ years antibody/biotherapeutic engineering experience; AI/ML protein design; antibody display tech; multispecific protein design; strong cross-functional collaboration.
AI/ML, Yeast display, Phage display, Antibody engineering, Biophysical characterization, Multispecific protein design
2w
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Principal Machine Learning Engineer, YM2026PMLE
Connecticut or Nebraska or Indiana or Arizona or Michigan or Missouri or Massachusetts or Illinois or Maine or California or Florida or Minnesota or Colorado or Iowa or Kansas or Mississippi or Georgia or Alabama or Kentucky or Idaho or Maryland or Norwalk
$177k-$217k/yr RemoteFull Time
6+ YOEMaster’s degree in a technical field, 6 years of related experience, and 3 years using Python, Node.js, MongoDB, RabbitMQ, Redis or Memcached, Git, Elasticsearch, scikit-learn, NumPy, spaCy, NLP, and machine learning methods.
Node.js, MongoDB, RabbitMQ, Redis, Memcached, Git, Python, Elasticsearch, scikit-learn, NumPy, spaCy, SVM, XGBoost, RNN, LSTM
1mo
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Principal Marketing Data Ops Engineer II
Bethesda or Getzville or New York City or Beachwood or Indianapolis or Tucson or Tampa or Chicago or Fredericksburg or Melville
HybridFull Time
7+ YOE7+ years building data pipelines in Python/Scala, 7+ years SQL with enterprise warehouses, 5+ years ETL/ELT and cloud infrastructure experience (Azure/AWS/GCP); BA/BS preferred.
Python, Scala, SQL, Snowflake, Databricks, Azure, AWS, GCP, Azure Data Factory, Microsoft Dynamics, Statsig, REST API
2w
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Principal AI & Data Architect
Shelton, Connecticut, United States
HybridFull Time
15+ YOE15+ years enterprise experience in data/AI architecture, cloud platforms (AWS/Azure/GCP), data governance, MLOps/LLMOps, building enterprise-scale platforms, and leading cross-functional teams.
AWS, Azure, GCP, MLOps, LLMOps
1mo
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Principal Environmental Consultant
Islandia or New York City
$140k-$225k/yr HybridFull Time
10+ YOEBachelor's in engineering or science required (Master's preferred), 10+ years environmental consulting, state professional license or certification, experience with regulatory programs, business development and project management skills.
Microsoft Project, Microsoft Excel
1w
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Senior Director, Principal Technical Architect
New York City or New York or La Jolla or Bothell or Pennsylvania or Connecticut or Washington or Walton Oaks or United Kingdom or Groton or California or Collegeville or Tampa or Florida
$215k-$358k/yr HybridFull Time
12+ YOEBachelor's degree in a relevant technology field and 12+ years of senior engineering and technical leadership experience; expertise in enterprise platforms, cloud, APIs, security, reliability, and modern engineering.
AI, automation, cloud platforms, APIs, chaos engineering
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