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46 principle developer jobs at 29 companies in Waltham, 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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2mo
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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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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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Senior Quality Development Engineer
Boston, Massachusetts, United States
$92k-$136k/yr OnsiteFull Time
InterSystems
InterSystems: Provides data management and healthcare information technology software solutions.
5+ YOE5+ years IT experience; IT degree; HL7 and FHIR experience; REST API automation; SQL and at least one programming language; web development knowledge; SDLC and software testing principles.
HL7, FHIR, REST API, SQL, Programming Languages, Web development technologies
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3w
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Senior principal software Engineer
Boston or Maryland
RemoteFull Time
Palo Alto Networks
Palo Alto NetworksNASDAQ: PANW: Provides enterprise-grade network, cloud, and endpoint security software.
10+ YOE10+ years C++ development, deep system and distributed design, security principles (OWASP, encryption, LDAP, SAML, OIDC), AWS/cloud, Python scripting, CI/CD (Jenkins, Git, Artifactory, Terraform), and strong communication and leadership skills.
C++, Python, Jenkins, Git, Artifactory, Terraform, AWS, JIRA
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Software Engineer
Westford, Massachusetts, United States
$82k-$156k/yr OnsiteFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides global edge-to-cloud technology solutions and IT infrastructure services.
0+ YOEBachelor's degree in CS/CE or equivalent, 0-2 years experience, strong programming fundamentals, proficiency with Python, C, C++, Linux, Git, Docker/Kubernetes, and knowledge of OS, networking, AI and container principles.
Python, C, C++, Linux, Git, Docker, Kubernetes
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Senior Engineer, Invest Tech
Boston, Massachusetts, United States
$135k-$145k/yr HybridFull Time
Invesco
InvescoNYSE: IVZ: Provides diversified investment management services and financial products globally.
3+ YOEBachelor's degree; 3+ years software or data engineering experience; 3+ years Python and SQL; experience with cloud-native (AWS), distributed/event-driven systems, CI/CD, and data engineering principles; financial services experience preferred.
GitHub Copilot, Claude, ChatGPT, AWS Bedrock, Python, PostgreSQL, SQL Server, Snowflake, Kafka, AWS Lambda, Amazon S3, Amazon ECS, Amazon EKS, AWS Step Functions, Amazon Aurora, CI/CD, DevOps
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Staff Software Engineer, Quality Integration
Boston, Massachusetts, United States
$166k-$220k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
15+ YOE15+ years building automated verification suites, CI/CD and DevOps expertise, HITL/SITL automation, Python scripting, Terraform, containerization, automated testing, SRE principles, and system-level reliability.
Lattice OS, Jenkins, GitLab CI, GitHub Actions, Python, Terraform, NixOS, Docker, Kubernetes, AWS, Azure, GCP
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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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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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2w
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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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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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2w
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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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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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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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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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Sterilization Assurance Quality Engineer
Durham or Tewksbury
$67k-$92k/yr OnsiteFull Time
Corning
CorningNYSE: GLW: Develops and manufactures specialty glass, ceramics, and optical fiber.
1+ YOEBachelor's in life sciences/chemistry/engineering, 1+ years sterilization/aseptic processing experience in manufacturing, knowledge of sterility assurance principles and ISO standards, ability to review microbiological data and support validations.
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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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