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43 principle engineer jobs at 27 companies in Boston, MA

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Principle Thermal Mechanical Engineer
Littleton, Massachusetts, United States
$154k-$211k/yr OnsiteFull Time
Flex
FlexNASDAQ: FLEX: Contract electronics manufacturing and supply chain management services.
7+ YOEMaster's (thesis) in Mechanical Engineering, 7+ years designing fluid systems, 3+ years at senior/principal level, expertise in fluid dynamics/heat transfer, SolidWorks/CAD experience, product development experience.
SolidWorks, CAD
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Principle Thermal Mechanical Engineer
Littleton, Massachusetts, United States
$154k-$211k/yr OnsiteFull Time
JetCool
JetCoolNASDAQ: FLEX: Direct-to-chip liquid cooling for high-performance computing.
7+ YOEMaster's (thesis) in Mechanical Engineering, 7+ years designing fluid systems, 3+ years at senior/principal level, expertise in fluid dynamics and heat transfer, SolidWorks CAD experience, product development and technical leadership experience.
SolidWorks CAD
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Principle RF/Microwave Engineer
Nashua, New Hampshire, United States
$118k-$201k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
4+ YOEBachelor's in engineering/science with 6+ years (or Master’s with 4+ years), US person able to obtain Secret clearance, experience designing microwave modules, EM modeling proficiency, Keysight ADS preferred, strong communication skills.
Keysight ADS
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Principle Systems Engineer - Anti-Tamper
Nashua, New Hampshire, United States
OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA.: Produces advanced defense, aerospace, and information security systems.
4+ YOEBachelor's degree plus 4+ years experience; systems engineering, hardware/software integration, writing requirements, architecture definition, validation/verification; ability to obtain Secret clearance; leading teams preferred.
Xilinx, Microsemi, Cameo, MagicDraw
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Principle RF Test Development Engineer
Nashua, New Hampshire, United States
$118k-$201k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
3+ YOERequires U.S. citizenship, Secret clearance or eligibility, and a STEM bachelor's with 6 years' experience or master's with 3+ years. Requires RF testing, instrumentation, automated test software, and electronic troubleshooting experience.
NI TestStand, LabWindows/CVI, Network Analyzers, Spectrum Analyzers, Signal Generators, Power Meters, LabVIEW FPGA, VHDL, Verilog, Jira, Bitbucket, Confluence, Git, Tortoise Git, MLVDS, RS232, RS485, RS422, PCI, PCIe, JTAG, SPI, I2C
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3mo
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Principle Software Engineer, AI Observability & Evals Platform
Boston or San Francisco or New York City
$230k-$270k/yr OnsiteFull Time
LangChain
LangChain: Tools for building and deploying production-ready AI agents.
10+ YOE10+ years backend or full-stack engineering; strong Python/Go; TypeScript/React; architectural decisions; reliable, scalable systems; mentoring.
Python, Go, TypeScript, React
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Electrical Engineer – Value Engineering
Gloucester, Massachusetts, United States
$87k-$119k/yr OnsiteFull Time
Applied Materials
Applied MaterialsNASDAQ: AMAT: Produces equipment and services for chip and display manufacturing.
7+ YOEBachelor's in Electrical Engineering, 7+ years electrical engineering experience, expertise in circuit design/PCB/power systems, proven value engineering and supplier collaboration, and application of DfX principles.
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Project Engineer, LNG
Hopkinton or Massachusetts or Connecticut or New Hampshire
$116k-$129k/yr OnsiteFull Time
Eversource Energy
Eversource EnergyNYSE: ES: Delivers electricity, natural gas, and water to New England customers.
5+ YOEB.S. in Mechanical Engineering or related, 5+ years engineering experience (gas experience preferred), knowledge of distribution construction, codes, welding principles, MS computer operations, ability to support construction and emergency restoration.
MS computer operations
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Hardware Design Engineer
Nashua, New Hampshire, United States
OnsiteFull Time
Amphenol
AmphenolNYSE: APH: Manufactures electronic and fiber optic connectors and interconnect systems.
BS in Electrical Engineering or Physics, hands-on frequency/time-domain characterization, signal integrity measurement and debugging experience, understanding of electromagnetic principles.
ANSYS HFSS, Designer, CST Microwave Studio, HSPICE, MATLAB, ADS, TDR, VNA
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Hardware Design Engineer
Nashua, New Hampshire, United States
OnsiteFull Time
Amphenol
AmphenolNYSE: APH: Designs and manufactures electrical connectors and interconnect systems.
2+ YOEBS in Electrical Engineering or Physics required; hands-on frequency/time-domain characterization, signal integrity measurement experience (TDR,VNA), and understanding of electromagnetic principles.
ANSYS HFSS, Designer, CST Microwave Studio, HSPICE, MATLAB, ADS, TDR, VNA, pattern generators, error detectors
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Associate Structural Engineer (Buildings)
North Providence, Rhode Island, United States
$80k-$99k/yr OnsiteFull Time
WSP
WSPToronto Stock Exchange: WSP: Provides engineering, design, and environmental consultancy services globally.
1+ YOEBachelor's in structural/civil engineering, 1+ years relevant experience, knowledge of structural principles and codes, technical writing and analysis skills, ability to work independently and on teams.
MicroStation, AutoCAD, Civil 3D, ArcGIS, InRoads, Geopak, GeoSlope, ANSYS, STAAD, HEC-RAS, HEC-HMS
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Returning New Grad Engineer I - Winter/Summer 2027 - Northeast Division (For Current/Former HNTB Interns Only)
New York or South Portland or Princeton or Bedford or Boston or Newark or Cherry Hill or Parsippany or South Norwalk or Rocky Hill or Chelmsford
$66k-$125k/yr OnsiteFull Time
HNTB
HNTB: Infrastructure design and engineering for transportation and public works
Bachelor's degree in Engineering required; knowledge of engineering principles; familiarity with Microsoft Office, MicroStation and/or AutoCAD; EIT preferred; master's preferred.
Microsoft Office, MicroStation, AutoCAD
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Returning New Grad Engineer I - Winter/Summer 2027 - Northeast Division (For Current/Former HNTB Interns Only)
New York or South Portland or Princeton or Bedford or Boston or Newark or Cherry Hill or Parsippany or South Norwalk or Rocky Hill or Chelmsford
$66k-$125k/yr OnsiteFull Time
HNTB
HNTB: Designs and manages large-scale transportation and infrastructure projects.
Bachelor's degree in Engineering required; understanding of engineering principles; familiarity with Microsoft Office, MicroStation and/or AutoCAD; EIT preferred; Master's preferred.
Microsoft Office Suite, MicroStation, AutoCAD
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Metallurgical Process Engineer
Billerica or Boston
OnsiteFull Time
Fabri
Fabri: An early-stage investment casting startup building a fully integrated digital foundry to deliver precision metal castings with speed and cost-effectiveness.
5+ YOEDegree in materials/metallurgy/engineering or related, 5+ years developing solidification/thermal processes, strong first-principles solidification knowledge, SPC/DOE experience, root-cause analysis, hands-on foundry/process experience, US citizen or permanent resident required.
ProCAST, MAGMASOFT, Flow-3D
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2w
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Software Engineer
Lexington, Massachusetts, United States
$135k-$145k/yr OnsiteFull Time
Riverside Research
Riverside Research: Conducts independent scientific research for US national security.
8+ YOEActive Secret clearance required; 6–8+ years software experience depending on degree; proficiency in Java/Python/C++/C#/JavaScript, RESTful APIs, CI/CD and software-development principles.
Java, Python, C++, C#, JavaScript, RESTful APIs, Git, Maven, Gradle, Jenkins, GitLab CI, Linux, Windows, Spring, JEE, SQL, Docker, Kubernetes, OpenShift, JUnit, Mockito, Selenium, Cucumber
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Advanced Network Integration Systems Engineer
Taunton, Massachusetts, United States
$119k-$132k/yr OnsiteFull Time
General Dynamics Mission Systems
General Dynamics Mission SystemsNYSE: GD: Engineers secure communication and mission-critical defense technology systems.
5+ YOEBachelor's in systems engineering or related field and 5+ years experience (Master's+3yrs acceptable). Requires DoD Secret clearance and U.S. citizenship. Experience with network design, device configuration, MBSE tools, and systems engineering principles.
MBSE, Cameo Systems Modeler, MagicDraw, Agile
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Sr. Manufacturing Engineer
Hudson, New Hampshire, United States
OnsiteFull Time
onsemi: Designs and manufactures semiconductor solutions for power and sensing.
5+ YOEB.S.M.E. with 5+ years related experience; 3D CAD/SolidWorks and PDM preferred; knowledge of mechanical design, vacuum principles, MRP systems, and spreadsheets for analysis.
3D CAD, SolidWorks, PDM, MRP, 3D printing
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Senior Systems Engineer
Hanscom Air Force Base, Massachusetts, United States
$160k-$182k/yr OnsiteFull Time
Odyssey Systems
Odyssey Systems: Provides technical engineering and program management for government agencies.
10+ YOETop Secret clearance required, 10+ years related experience (5+ in DoD), expertise with requirements management (DOORS/Jira), DoD architecture (UAF/DoDAF), MBSE (Cameo/MagicDraw/SysML), verification & validation, and DoD acquisition principles.
DOORS, Jira, UAF, DoDAF, Cameo, MagicDraw, SysML, Microsoft Excel, Microsoft Word, Microsoft PowerPoint, CI/CD, DevSecOps, DevOps, MBSE
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Manufacturing Engineer II, Conformal Coat
Andover or United States
$69k-$131k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
2+ YOEBachelor's in STEM with minimum ~2 years relevant manufacturing experience; U.S. citizenship and ability to obtain/maintain DoD security clearance required; knowledge of conformal coating processes, IPC/ANSI standards, and Lean principles preferred.
ANSI J-STD-001, IPC-CC-830, SPC, Lean Manufacturing
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Engineer II, Process safety
Boston, Massachusetts, United States
$72k-$113k/yr OnsiteFull Time
Takeda
TakedaTokyo Stock Exchange / New York Stock Exchange: 4502 / TAK: Researches, develops, and manufactures prescription pharmaceutical medicines.
2+ YOEAssociates degree in a relevant science plus 2+ years industry experience; process safety and pilot-plant experience preferred; familiarity with DSC/ARC/TSU/EasyMax/RC-1, process-safety software, ELN, and FAIR data principles.
DSC, ARC, TSU, EasyMax, RC-1, Electronic Lab Notebook (ELN), AKTS, Aspen Plus, gPROMS
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