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319 senior systems engineer jobs at 171 companies in Danbury, CT

3mo
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Systems Engineer
Greenlawn, New York, United States
$153k-$261k/yr HybridFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
8+ YOEBachelor's in engineering/science with 10 years (or Master's with 8 years), experience with DOORS, electronic lab test equipment, requirements engineering, full product development lifecycle, and proficiency with Microsoft Office; ability to obtain Secret clearance.
DOORS, Microsoft Office, Cameo, SysML, Model Based Systems Engineering (MBSE), Artificial Intelligence (AI)
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2mo
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Senior Rail Systems / Senior Catenary Engineer
Rocky Hill or Boston or United States
$200k-$215k/yr HybridFull Time
AECOM
AECOMNYSE: ACM: Provides infrastructure consulting and engineering services for global projects.
8+ YOEBA/BS in Civil or Structural Engineering plus 8+ years related experience, PE required, valid US driver’s license, experience with overhead catenary systems and rail projects, AutoCAD/MicroStation/GEOPAK/OpenRoads/OpenRail proficiency, strong communication and leadership skills.
AutoCAD, MicroStation, GEOPAK, OpenRoads, OpenRail
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1mo
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Chief Systems Engineer, EIectron-Ion Collider
Upton, New York, United States
$147k-$249k/yr OnsiteFull Time
Brookhaven National Laboratory
Brookhaven National Laboratory: Conducts multidisciplinary scientific research and operates national user facilities.
15+ YOE5+ MgmtBachelor's in engineering or physics, 15+ years technical experience (including 5+ years senior engineering leadership), experience with large accelerator projects, systems integration, verification, SEMP development, MS Office proficiency, ability to obtain UPIV credential and become a qualified Radiation Worker, valid driver's license.
Microsoft Office
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Senior Mechanical Engineer - Building Systems
Hartford, Connecticut, United States
$120k-$140k/yr RemoteFull Time
Trilon Group
Trilon Group: Providing engineering and design services for community infrastructure.
10+ YOEBachelor’s in mechanical engineering; 10+ years in mechanical design (HVAC, plumbing, fire protection); PE license; AutoCAD and Revit; strong communication; travel to job sites in CT/MA/RI.
AutoCAD, Revit
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Senior Rail Systems / Senior Catenary Engineer
Rocky Hill or Boston
$200k-$215k/yr HybridFull Time
AECOM
AECOMNYSE: ACM: Global infrastructure consulting firm providing design and engineering services.
8+ YOEBA/BS in Civil/Structural Engineering plus 8+ years related experience, PE required, valid US driver's license, railway/OCS experience preferred, strong communication and technical skills.
AutoCAD, Microstation, GEOPAK, OpenRoads, OpenRail
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Senior Systems Engineer
New York or Stamford
$130k/yr HybridFull Time
ECI
ECI: Provider of managed IT, cybersecurity, and cloud solutions for finance.
6+ YOE6+ years IT administration or Bachelor's degree; advanced Windows and public cloud administration (Microsoft 365/Azure), networking, virtualization, security incident response, and project delivery experience.
Microsoft 365, Microsoft Azure, Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Exchange, Google Workspace, Proofpoint Essentials, Mimecast, VLAN, ACL, Cloudflare, iBoss, Active Directory, Domain Controller, Group Policy, Remote Monitoring and Management (RMM), VMware vSphere, Hyper-V, Cisco, Palo Alto Networks, Meraki, Windows Server, Windows 11, Intune, Exchange Online, SharePoint Online, OneDrive for Business, Teams, Azure AD
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Senior Firmware Engineer - Streaming Audio
Plano or Rockleigh
$108k-$174k/yr OnsiteFull Time
Crestron
Crestron: Designs and manufactures advanced automation and control systems.
6+ YOESenior firmware engineer with 6-8 years exp in C/C++, Node.js, Python; embedded/Linux; DSP; networking; system integration; SDLC ownership.
C, C++, Node.js, Python, Linux
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Principal Engineer, Systems Engineering (Onsite)
East Hartford, Connecticut, United States
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
8+ YOEBachelor's in engineering + 8+ years (or advanced degree + 5+ years), experience with SysML tools (IBM Rhapsody, Cameo/MagicDraw), MBSE experience, ability to obtain/maintain U.S. security clearance and U.S. citizenship required.
MBSE, SysML, IBM Rhapsody, Cameo Systems Modeler, MagicDraw, Cameo Enterprise Architect, Jira, Confluence, Microsoft Office
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2d
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Specialist, Systems Engineer 1 (42759)
Amityville, New York, United States
$107k-$198k/yr OnsiteFull Time
L3Harris Technologies
L3Harris TechnologiesNYSE: LHX: Aerospace and defense providing mission-critical technology solutions.
4+ YOEBachelor's degree in mechanical engineering plus 4+ years of relevant experience, or master's plus 2+ years; 8+ years may substitute. Requires reliability analysis, prediction software, standards, and clearance eligibility.
Microsoft Office, PTC Windchill Quality Solutions, Relyance, MIL-HDBK-217F, Telcordia, MIL-STD-1629A, MIL-HDBK-1547A, MIL-STD-1472, MIL-STD-882, AS9100
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Principal Intelligent Transportation Systems Engineer / Senior Project Manager
New York City or Woodbury or Hartford or Rocky Hill
$155k-$210k/yr HybridFull Time
GFT (Gannett Fleming)
GFT (Gannett Fleming): Provides infrastructure engineering, design, and construction management services.
15+ YOEPE in NY, Bachelor’s in engineering, 15+ years ITS/traffic experience, leadership and client-development experience, familiarity with NTCIP/NEMA/IEEE/NEC, MicroStation and CADD, and ability to manage large multidisciplinary projects.
MicroStation, CADD, Microsoft Office
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Senior AI Engineer
Plano or Purchase or Chicago
$111k-$185k/yr HybridFull Time
PepsiCo
PepsiCoNASDAQ: PEP: Global manufacturer and distributor of snacks and beverages.
8+ YOESenior AI Engineer with 8+ years in software lifecycle, ML/AI, and production-grade agent systems; strong Python/Java, distributed systems, and ML Ops experience.
Python, Java, FastAPI, asyncio, Pydantic, LangChain, LangGraph, CrewAI, MLflow, Arise, Docker, Kubernetes, Ray, Kafka, gRPC, Redis, Prometheus, OpenTelemetry, Grafana, Temporal, MEM0, Temporal Agentic Memory, Graph and Vector DBs
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GenAI Python Systems Engineer –Senior Manager
Chicago or Raleigh or Charlotte or Cincinnati or Cleveland or Columbia or Columbus or Dallas or Baltimore or Richmond or Rosemont or Sacramento or Boston or St. Louis or Salt Lake City or San Antonio or San Diego or San Francisco or Silicon Valley or Seattle or Spartanburg or Albany or Stamford or Tampa or Atlanta or Toledo or Austin or Tulsa or Washington or Denver or Des Moines or Detroit or Buffalo or Florham Park or Kansas City or Las Vegas or Little Rock or Los Angeles or Louisville or Birmingham or Fayetteville or Miami or Milwaukee or Minneapolis or Nashville or New Orleans or New York or Oklahoma City or Philadelphia or Phoenix or Pittsburgh or Portland
$124k-$280k/yr HybridFull Time
PwC
PwC: Providing audit, tax, and management consulting services to businesses.
8+ YOESenior Manager level with 8+ years of experience; proficient in Python, SQL, FastAPI; cloud certifications a plus; willing to travel up to 80%; Bachelor's degree required.
Python, SQL, FastAPI, Cloud Platforms, LLM techniques, Data Warehousing, Data Lakes, IAM
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1mo
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Senior Systems Engineer - L2/L2+ Support
Stamford or Irving
$86k-$118k/yr HybridFull Time
Gartner
GartnerNYSE: IT: Provides business research and advisory services to organizations.
5+ YOEBachelor’s degree in computer science or related field and 5+ years of production support experience. Requires database scripting, JSON/XML, API integrations, escalated issue resolution, and strong communication.
Salesforce, Postgres, PL/SQL, JSON, XML, API, Co-Pilot, GenAI, Apttus CPQ/CLM, ServiceNow, JIRA
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Radar Systems/Software Engineer
Trumbull, Connecticut, United States
$105k-$170k/yr OnsiteFull Time
Technology Service Corporation
Technology Service Corporation: Develops advanced sensor systems and engineering solutions for defense.
5+ YOEB.S. in EE/Physics/CompE (M.S. preferred),5+ years radar and M&S experience,proficient in MATLAB,Python,C/C++,CUDA,VHDL,Windows/Linux,ability to obtain DoD Secret clearance,U.S. citizenship required.
MATLAB, Python, C, C++, CUDA, VHDL, Windows, Linux
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Building Automation & Data Systems Engineer
New Haven, Connecticut, United States
$82k-$132k/yr OnsiteFull Time
Yale University
Yale University: Provides higher education and conducts global academic research.
5+ YOEBachelor's degree and 5 years related experience or equivalent; strong analytical and systems thinking; BAS, networking, commissioning knowledge; Microsoft Office/Excel and CAD proficiency; strong communication skills.
Microsoft Office, Microsoft Excel, CAD, Building Automation System (BAS)
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Building Automation & Data Systems Engineer
New Haven, Connecticut, United States
$82k-$132k/yr OnsiteFull Time
Yale University
Yale University: Provides higher education and conducts research across various disciplines.
5+ YOEBachelor's degree in engineering or related field and 5 years' experience; strong analytical, communication, BAS, controls, networking, commissioning, and Microsoft/Excel/CAD skills.
Microsoft Office, Microsoft Excel, CAD, database tools
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Building Automation & Data Systems Engineer
New Haven, Connecticut, United States
$82k-$132k/yr OnsiteFull Time
Yale University
Yale University: Providing higher education and conducting advanced scientific research.
5+ YOEBachelor's degree in engineering or related field and 5+ years' related experience; building automation, controls, networking, analytics, CAD, Microsoft Office/Excel, strong communication and analytical skills.
Microsoft Office, Microsoft Excel, CAD
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2mo
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Senior Project Engineer, HVAC Control Systems
Valhalla or Los Angeles
$125k-$150k/yr OnsiteFull Time
Ramboll
Ramboll: Global provider of engineering, architecture, and sustainability consulting services.
5+ YOEBA/BS in engineering preferred; PE or EIT a plus. 5+ years with BMS/BAS and data center automation; PLC/ALC programming and integration experience; familiarity with BACnet and Modbus protocols; strong communication and leadership skills.
PLC, ALC, BMS, BCM, BAS, BACnet IP, BACnet MSTP, Modbus RTU, Modbus TCP, Johnson Controls, JCI, Siemens, Automated Logic, Honeywell, GE Control Systems, Schneider Electric
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Transactional Systems Engineer
Lakewood or United States or Georgia or Englewood Cliffs or Long Beach
$140k-$160k/yr HybridFull Time
Advanced Medical Management
Advanced Medical Management: Provides administrative and operational management services for healthcare providers.
5+ YOE5+ years supporting enterprise healthcare applications; 3+ years administering Cedar Gate EZ Suite; Bachelor's degree; knowledge of claims, eligibility, authorizations, and ANSI X12; strong SQL, API, and troubleshooting skills.
EZCap, EZEDI, EZCare, SQL, APIs, EDI, ANSI X12
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Sr. Systems Engineer
Shelton, Connecticut, United States
$119k-$149k/yr OnsiteFull Time
Subway
Subway: Global quick-service restaurant chain specializing in made-to-order sandwiches.
5+ YOERequires 5+ years managing Microsoft 365 and enterprise endpoint platforms, mentoring staff, ITIL/ITSM knowledge, SLA operations experience, and a bachelor's degree or equivalent practical experience.
Microsoft 365, Microsoft Intune, SCCM, ITIL, ITSM, PowerShell, Graph API
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