19 principle developer jobs at 12 companies in Brookside, DE
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Senior AI/ML Engineer
Malvern or Philadelphia or Charlotte
HybridFull Time
Vanguard: Provides mutual funds, ETFs, and investment management services.
5+ YOEMaster’s degree in a related field, 5–8 years of AI/ML or software development experience, Python, ML frameworks, LLMs, agentic principles, vector databases, data pipelines, and retrieval systems.
Gwynedd Manufacturing: Manufactures precision firearm components and equipment for defense sectors.
3+ YOEDevelop and sustain CNC machining and inspection processes; design tooling and fixtures; troubleshoot machining and tooling; read blueprints; apply ISO 9001 principles.
Perform traffic engineering design and analysis using engineering principles, prepare plans and computations, analyze survey data, develop cost estimates, and coordinate with project teams.
Honeywell InternationalNASDAQ: HON: Designs and manufactures technologies for aerospace, buildings, and industry.
Proven RF design experience for aerospace, knowledge of RF principles and antenna design, proficiency with Keysight ADS/Cadence AWR/ANSYS HFSS/CST, RF testing and validation experience, and ability to obtain security clearance.
Keysight ADS, Cadence AWR, ANSYS HFSS, CST, software-defined radio (SDR)
Manufacturing Methods Engineer - Early / Mid-Career
Moorestown, New Jersey, United States
$65k-$139k/yrOnsiteFull Time
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
3+ YOEUS citizen with Secret clearance, typically 3+ years engineering experience; ability to develop/optimize assembly processes, write process instructions, apply Lean principles, work with drawings/models, use MES and Microsoft Office, and train production personnel.
Manufacturing Execution Systems (MES), Microsoft Office
Holtec International: Provides nuclear fuel storage systems and small modular reactors.
Bachelor’s degree in engineering or a related scientific discipline, strong engineering principles, communication, troubleshooting, critical thinking, multitasking, and deadline-management skills. All experience levels considered.
AmphenolNYSE: APH: Manufactures electronic and fiber optic connectors and interconnect systems.
BS in Electrical Engineering or Physics required; hands-on frequency- and time-domain characterization; experience with TDR, VNA, pattern generators, error detectors; understanding of electromagnetic principles; EM simulation tools preferred.
Vanguard: Provides mutual funds, ETFs, and investment management services.
6+ YOE6+ years Elasticsearch experience, undergraduate degree or equivalent, expertise with ECS, AWS, data streaming and data lake integrations, infrastructure-as-code, security principles, and mentoring experience.
AmphenolNYSE: APH: Manufactures electronic and fiber optic connectors and interconnect systems.
BS in Electrical Engineering or Physics required; hands-on frequency/time-domain characterization, TDR/VNA measurement experience, EM principles understanding; BLS/CPR not applicable; MS/PhD and 2+ years preferred.
AmphenolNYSE: APH: Designs and manufactures electrical connectors and interconnect systems.
BS in Electrical Engineering or Physics required. Hands-on frequency- and time-domain characterization experience; experience with TDR, VNA, pattern generators; understanding of electromagnetic principles. MS/PhD and 2+ years industry experience preferred.
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/yrOnsiteFull Time
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.
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/yrOnsiteFull Time
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.
Returning New Grad Engineer I - Winter/Summer 2027 - Mid Atlantic Division (For Current/Former HNTB Interns Only)
Philadelphia or Harrisburg or Charlotte or Whitehall or Pittsburgh or Baltimore or Fairmont or Elkins or Raleigh or North Charleston or Washington or Glen Allen or King of Prussia or Arlington or Scott Depot
$66k-$115k/yrOnsiteFull Time
HNTB: Designs and manages large-scale transportation and infrastructure projects.
Bachelor's degree in Engineering; familiarity with Microsoft Office, MicroStation and/or AutoCAD; understanding of engineering principles; EIT preferred; Master's and EIT are preferred.
Philadelphia or Raleigh or Charlotte or Virginia Beach or Scott Depot or Harrisburg or North Charleston or Washington or Pittsburgh or Arlington or Baltimore or King of Prussia
$21-$36/hrOnsiteFull Time
HNTB: Infrastructure design and engineering for transportation and public works
Current enrollment in an accredited post‑secondary engineering program, high school diploma/GED or equivalent; understands basic engineering/math principles and Microsoft Office proficiency.
Boston or New York City or Philadelphia or Pittsburgh
OnsiteFull Time
KPMG: Global professional services network providing audit, tax, and advisory.
1+ YOEBachelor's in engineering/architecture/construction management,1+ year experience (2+ preferred for Senior),knowledge of construction/building systems,familiarity with federal depreciation principles,advanced Excel and data tools.
Microsoft Excel, Power Query, Alteryx, Power BI, Tableau, SQL, Python, R
Carpenter TechnologyNYSE: CRS: Manufactures and distributes high-performance specialty alloys and powders.
0+ YOEBachelor’s degree in metallurgical engineering, materials science, chemical engineering, or related field; 0–2 years of relevant experience; knowledge of metallurgical principles, equipment, statistics, Six Sigma, and BPI.
CNANYSE: CNA: Provides commercial property and casualty insurance and risk management.
7+ YOEBachelor's in Business, typically 7+ years underwriting experience, ability to lead and develop underwriters, strong analytical, communication and negotiation skills, knowledge of underwriting principles and Microsoft Office.
School District of Philadelphia: Providing K-12 public education services in Philadelphia.
Minimum 30 college credits or current enrollment/graduation from an accredited college; able to work 20 hours/week per tutoring schedule; knowledge of education principles and child development.
Gaudenzia: Provides comprehensive addiction and mental health treatment services.
High school diploma/GED required. Knowledge of child care and early childhood development, drug/alcohol program principles, ability to work with clients, maintain records, and hold a valid driver's license.