25 principle developer jobs at 16 companies in West Chester, PA
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Advanced Emerging Tech Engineer, Principle
Bethlehem or Kalamazoo
OnsiteFull Time
FlowserveNYSE: FLS: Manufactures and services industrial pumps, valves, and mechanical seals.
Bachelor's degree in engineering or related field, several years product development or R&D experience, technical leadership of sprint teams, strong problem-solving and communication skills.
FlowserveNYSE: FLS: Manufacturer of industrial pumps, valves, and flow control systems.
Bachelor's degree in a technical field and several years of technical experience in product development, systems engineering, applied R&D, or innovation execution; technical leadership and cross-functional coordination required.
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.
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)
Solutionz: Designs and installs professional audiovisual and conferencing systems.
3+ YOERequires 3 years in a technical role, control-system and DSP programming, AV design, audio principles, network infrastructure, VTC products, troubleshooting, commissioning, and strong communication skills.
Crestron, Biamp, QSC, AMX, Cisco, Polycom, Lifesize, Microsoft Outlook
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.
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 - Northeast Division (For Current/Former HNTB Interns Only)
Bedford or Boston or Chelmsford or Cherry Hill or New York City or Newark or Parsippany or Princeton or Rocky Hill or South Norwalk or South Portland
$66k-$125k/yrOnsiteFull Time
HNTB: Infrastructure firm providing engineering, architecture, and construction management services.
Bachelor's degree in Engineering required; engineering principles, Microsoft Office Suite, and familiarity with MicroStation or AutoCAD. Current or former HNTB interns only.
ECS: Provides geotechnical, environmental and construction materials engineering services.
2+ YOEBachelor's in civil/materials/architectural engineering or geology, PE or PG required, minimum 2 years relevant experience, valid driver's license, strong communication and marketing skills, knowledge of CMT principles and ASTM standards.
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
Almac Group: Provides global pharmaceutical development and manufacturing solutions.
2+ YOEHigh school diploma, minimum 2 years sales-support or corporate customer service experience, client-facing communication, knowledge of sales principles, ability to use ERP/financial tools; bachelor's preferred.
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.
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.
QVC GroupNASDAQ: QVCGA: Provides video-driven shopping experiences across television and digital platforms.
2+ YOEBachelor's degree and 2+ years in learning and development facilitation/desig n; strong project management, continuous improvement, and metrics-driven mindset; effective communicator and leader; experience with adult learning principles.
Voorhees Township School District: Operates public elementary and middle schools in Voorhees Township.
Valid New Jersey special education teaching certification, bachelor\u0002s degree in education, knowledge of special education principles, ability to develop and implement IEPs, assessments, data analysis, and effective communication with students and parents.