34 principal engineer jobs at 26 companies in Brookhaven, NY
1d
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Principal Engineer-Annuity Platforms and Transformation
Bethlehem or Stamford or New York City or Holmdel
$127k-$208k/yr HybridFull Time
10+ YOEBachelor’s degree and 10+ years of software engineering experience. Requires enterprise platform leadership, insurance or annuity systems experience, API/event-driven architecture, cloud-native AWS development, and modern engineering tools.
Java, Spring Boot, .NET, Node.js, React, TypeScript, Next.js, Amazon Web Services (AWS), Amazon SNS, Amazon SQS, Apache Kafka, Amazon S3, OpenAPI, Swagger, Git, Jenkins, GitHub Actions, OAuth 2.0, JSON Web Token (JWT), Splunk, AppDynamics, JSON, XML, ALIP, ACORD, IRI Digital First, ACORD NGDS, DTCC Insurance & Retirement Services
3mo
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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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Principal Software Engineer
Bronx, New York, United States
$200k-$220k/yr HybridFull Time
7+ YOERequires 7+ years of software engineering experience, principal-level impact, large-scale distributed systems experience, strong backend skills, architectural judgment, and end-to-end production ownership.
Python, FastAPI, React, TypeScript, MSSQL, Redis, Microsoft Azure, Azure Container Apps, Azure Static Web Apps, Azure DevOps Pipelines, Terraform, eClinicalWorks, Ellkay, Redox, FHIR
3mo
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Principal
New York City or White Plains
$180k-$220k/yr OnsiteFull Time
15+ YOEMaster’s degree in engineering; 15+ years in geotechnical engineering; NY PE; strong BD and project leadership; excellent communication; leadership of diverse teams.
1w
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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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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
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%.
1mo
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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
1d
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Mechanical Engineer - Principal
Greenlawn, New York, United States
$129k-$219k/yr OnsiteFull Time
8+ YOEBachelor’s degree in Mechanical Engineering and 8–12 years of engineering experience required. Requires CREO or similar CAD, thermal and structural FEA, environmental testing, reliability-based design, Secret clearance eligibility, and U.S. person status.
CREO, CAD, Finite Element Analysis, Model Based Definition (MBD)
2w
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Principal Engineer - Technical Supervisor
Hicksville, New York, United States
$121k-$199k/yr OnsiteFull Time
8+ YOEBachelor's degree in engineering, 8+ years of engineering experience, 5+ years in electric utility transmission, supervisory experience, engineering software expertise, U.S. driver's license, and 10 CFR 810 compliance.
PLS-CADD, AutoCAD, PLS-CAISSON, MFAD, CYME, NERC CIP, IEEE, NESC, OSHA, RUS, ASCE, EPRI, NEMA, FERC, NERC, NPCC, LIPA, DHS, Microsoft Excel
2w
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Principal Engineer- Eng Project Management
Plano or Purchase or Chicago
$111k-$185k/yr FieldFull Time
7+ YOEBachelor's degree in engineering and 7–9 years of project engineering experience, including manufacturing, packaging, utilities, CAPEX, and project management; travel of 30–50% required.
SAP myBuy, Microsoft Excel, Microsoft PowerPoint, CAD, Microsoft Project
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
1w
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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
1w
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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
3mo
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Principal
New York City or White Plains
$180k-$273k/yr OnsiteFull Time
15+ YOEBachelor’s degree in civil, chemical or mechanical engineering, geology, chemistry, or environmental science; professional licensure; more than 15 years experience; proven client development and relationships; strong communication and regulatory knowledge.
2d
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Sr Principal Propulsion Engineer
Palm Beach Gardens or Elkton or Ronkonkoma
$129k-$213k/yr OnsiteFull Time
8+ YOEBachelor's in STEM plus 8 years, master's plus 6 years, or PhD plus 4 years of design experience; mentoring experience; Siemens NX proficiency; ability to obtain Secret clearance; U.S. citizenship; willingness to travel.
Siemens NX, Siemens Teamcenter United Architecture
2d
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Sr Principal Propulsion Engineer
Palm Beach Gardens or Elkton or Ronkonkoma
$129k-$213k/yr OnsiteFull Time
8+ YOEBachelor's STEM degree with 8+ years of design experience, master's with 6+, or PhD with 4+. Requires mentoring experience, Siemens NX proficiency, Secret clearance eligibility, and 10–25% travel.
Siemens NX, Siemens Teamcenter United Architecture
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
3w
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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
4w
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Principal Cloud Engineer
Greenwich, Connecticut, United States
OnsiteFull Time
10+ YOEBachelor's or equivalent, Google Cloud Professional Cloud Architect certification, 10+ years cloud/platform engineering experience, 5+ years Google Cloud hands-on experience, Terraform/GKE/CI-CD expertise, strong security and networking skills.
Google Cloud Platform, Google Kubernetes Engine (GKE), Terraform, Cloud Build, GitHub Actions, Artifact Registry, Snowflake, Vertex AI, Gemini Enterprise Agent Platform, LiteLLM, MCP, Cloud Run, Identity-Aware Proxy (IAP), Cloud KMS/CMEK, Private Service Connect, Cloud NAT, Cloud Interconnect, Security Command Center
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