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19 sr principal software engineer jobs at 14 companies in Danbury, CT

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Principal Software Engineer
Bronx, New York, United States
$200k-$220k/yr HybridFull Time
Essen Health Care
Essen Health Care: Private multispecialty medical group providing integrated healthcare services.
7+ YOERequires 7+ years of software engineering experience, principal-level impact, large-scale distributed systems experience, strong backend skills, architectural judgment, and end-to-end production ownership.
Python, FastAPI, React, TypeScript, MSSQL, Redis, Microsoft Azure, Azure Container Apps, Azure Static Web Apps, Azure DevOps Pipelines, Terraform, eClinicalWorks, Ellkay, Redox, FHIR
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1d
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Principal Software Engineer (Hybrid)
Greenlawn, New York, United States
$129k-$219k/yr HybridFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
6+ YOEBachelor’s degree in a technical field and 6–8+ years developing embedded or real-time software. Requires strong software engineering judgment and ability to obtain and maintain Secret clearance.
Jira, Bitbucket, Git, DO-178
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1mo
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Principal Software Engineer - Software Architect
Charlotte or Hartford
$130k-$190k/yr OnsiteFull Time
Talcott Financial Group
Talcott Financial Group: International life insurance group providing risk and retirement solutions.
10+ YOE5+ Mgmt10+ years software engineering, 5+ years architecture; deep Microsoft Azure and AI/ML experience; proficiency with C#, Python, SQL, Terraform/Bicep/ARM, CI/CD, and enterprise data platforms.
Azure, Microsoft Fabric, C#, Python, SQL, Terraform, Bicep, ARM templates, CI/CD
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1mo
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Principal Software Engineer
Englewood Cliffs, New Jersey, United States
$165k-$225k/yr HybridFull Time
Versant
VersantNasdaq: VSNT: Operates cable television networks and digital media entertainment platforms.
7+ YOE7+ years frontend development, strong testing and CI/CD experience, familiarity with Git/Jenkins/Jira, ability to design architecture and mentor engineers.
React, PostgresSQL, GraphQL, ElasticSearch, Redis, Node.js, Go, AWS, Jenkins, DataDog, Splunk, Github, StoryBook, Kubernetes, Amplitude, Git, Jira
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2mo
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Principal Software Engineer
Charlotte or Chicago or Columbus or Hartford
$168k-$253k/yr HybridFull Time
The Hartford
The HartfordNYSE: HIG: Provides property and casualty insurance and financial products.
12+ YOERequires 12+ years in enterprise application development, a computer science or engineering bachelor's degree, and expertise in Java, Spring Boot, Angular/TypeScript, SQL, APIs, cloud platforms, and distributed systems.
Java, Spring Boot, Angular, TypeScript, SQL, AWS, Application Insights, Splunk, APIs, microservices, CI/CD, DevOps, DevSecOps, Identity and Access Management, AI frameworks
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Principal Software Engineer
Hartford or Charlotte or Columbus or Chicago
$168k-$253k/yr HybridFull Time
The Hartford
The HartfordNYSE: HIG: Provides business and personal insurance, group benefits, and investments.
12+ YOE12+ years enterprise application development experience, bachelor’s degree in CS/Engineering required, hands-on with Java, Spring Boot, Angular/TypeScript, SQL, cloud (AWS), APIs/microservices, observability tools; strong communication and AI-first experience.
Java, Spring Boot, Angular, TypeScript, SQL, AWS, Application Insights, Splunk, APIs, microservices, event-driven architectures, Identity and Access Management, AI frameworks, CI/CD, DevSecOps
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2mo
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Principal Software Development Engineer
Hartford, Connecticut, United States
$144k-$288k/yr HybridFull Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
10+ YOE10+ years software engineering experience with .NET/COBOL/Java/Node.js/JavaScript/Angular, DevSecOps and CI/CD expertise, GCP/Azure cloud experience, and experience modernizing enterprise systems.
.NET, COBOL, Java, Node.js, JavaScript, Angular, Generative AI technologies, GCP, Azure, GitHub, Jenkins, GitHub Actions, ArgoCD, Salesforce, Mulesoft, z/OS
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3mo
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Principal Engineer Software - Storage (Chronosphere)
Burbank or Denver or Chicago or Austin or Jacksonville or Hartford or Bridgeport or Seattle or Boston or New York City
$147k-$238k/yr RemoteAll Commitments Available
Palo Alto Networks
Palo Alto NetworksNASDAQ: PANW: Provides enterprise-grade network, cloud, and endpoint security software.
Design and build scalable backend services for high-volume telemetry data; strong backend skills; cloud infra experience; API design; mentorship.
Go, Java, Python, Rust, AWS, GCP, Azure, REST, gRPC, GraphQL
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2mo
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Principal Software Engineer (Health100 Platform)
Woonsocket or Hartford or Arizona or Texas or Georgia or New York or Massachusetts
$144k-$288k/yr HybridFull Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
10+ YOE10+ years software development experience; 5+ years with Java, Spring Boot, and microservices; 2+ years with Kafka/event-driven platforms; 3+ years with cloud (GCP/Azure); experience with AI/generative AI and production engineering practices (security, resiliency, observability, CI/CD).
Java, Spring Boot, Microservices, Kafka, GCP, Azure, Google Cloud AI, CI/CD
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3w
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Principal Software Development Engineer
Wellesley or Hartford or New York City or Arkansas or Vermont or Connecticut or Georgia or Texas or Minnesota or Michigan or Maine or Wisconsin or New York or District of Columbia or Kansas or Indiana or New Jersey or Nebraska or Rhode Island or Louisiana or Tennessee or Kentucky or Mississippi or Ohio or Oklahoma or West Virginia or Massachusetts or Maryland or South Carolina or Alabama or Missouri or Virginia or Illinois or North Carolina or Florida or New Hampshire or Delaware
$144k-$288k/yr HybridFull Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
10+ YOE10+ years software experience, 7+ years leading enterprise solution design, cloud-native microservices on GCP, Java/Python/Node.js, API design, strong communication and stakeholder skills.
Java, Python, Node.js, Angular, ReactJS, Google Cloud Platform (GCP), REST, APIs, CI/CD, SAFe
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1d
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Principal Engineer-Annuity Platforms and Transformation
Bethlehem or Stamford or New York City or Holmdel
$127k-$208k/yr HybridFull Time
Guardian Life
Guardian Life: Provides life, disability, dental, and vision insurance products.
10+ YOEBachelor’s degree and 10+ years of software engineering experience. Requires enterprise platform leadership, insurance or annuity systems experience, API/event-driven architecture, cloud-native AWS development, and modern engineering tools.
Java, Spring Boot, .NET, Node.js, React, TypeScript, Next.js, Amazon Web Services (AWS), Amazon SNS, Amazon SQS, Apache Kafka, Amazon S3, OpenAPI, Swagger, Git, Jenkins, GitHub Actions, OAuth 2.0, JSON Web Token (JWT), Splunk, AppDynamics, JSON, XML, ALIP, ACORD, IRI Digital First, ACORD NGDS, DTCC Insurance & Retirement Services
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3w
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Principal Embedded Software Engineer
New Haven, Connecticut, United States
$180k-$220k/yr OnsiteFull Time
Bexorg
Bexorg: Developing whole-brain perfusion platforms for neurodegenerative drug discovery.
Extensive embedded systems experience, deep C/C++ and Python skills, RTOS and real-time control expertise, firmware-to-hardware lifecycle ownership, PCB/CAD/fabrication experience, and comfort in wet-lab hardware environments.
C, C++, FreeRTOS, Zephyr, Python, Altium, KiCad, SolidWorks, Onshape, I²C, SPI, UART, RS-485/Modbus RTU, CAN/CANopen, EtherCAT, USB, Ethernet, oscilloscope, logic analyzer, SWD/JTAG, Yocto, Buildroot, PREEMPT_RT, systemd, ROS 2, LabVIEW, AWS
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1w
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Principal Engineer - Technical Supervisor
Hicksville, New York, United States
$121k-$199k/yr OnsiteFull Time
PSEG
PSEGNYSE: PEG: A diversified energy providing electricity and gas services.
8+ YOEBachelor's degree in engineering, 8+ years of engineering experience, 5+ years in electric utility transmission, supervisory experience, engineering software expertise, U.S. driver's license, and 10 CFR 810 compliance.
PLS-CADD, AutoCAD, PLS-CAISSON, MFAD, CYME, NERC CIP, IEEE, NESC, OSHA, RUS, ASCE, EPRI, NEMA, FERC, NERC, NPCC, LIPA, DHS, Microsoft Excel
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4w
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Principal AI Engineer
Charlotte or Chicago or Columbus or Hartford
$168k-$253k/yr HybridFull Time
The Hartford
The HartfordNYSE: HIG: Provides property and casualty insurance and financial products.
10+ YOEBachelor's degree in a technical field; 10+ years with cloud and software/platform infrastructure; Python and TypeScript; distributed systems, AI platforms, MLOps, RAG, vector search, and enterprise engineering.
Amazon Web Services (AWS), Google Cloud, Microsoft Azure, Python, TypeScript, CI/CD, Agile, LangGraph, crewai, NoSQL, ETL, RAG, ANN, KNN
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2mo
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AI Principal Engineer
Boston or Hartford or Missouri
$192k-$240k/yr OnsiteFull Time
Voya Financial
Voya FinancialNYSE: VOYA: Provides retirement, investment, and insurance products and services.
Bachelor's in CS/Engineering/Math required (advanced degree preferred). Significant experience delivering production AI/ML systems, proficiency with Python/TypeScript/Rust, LLM and MLOps knowledge, model lifecycle and MLOps practices, and leadership of technical initiatives.
Python, TypeScript, Rust, LLM, MLOps
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6d
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Principal Firmware Engineer - Video Streaming & Embedded Systems
Rockleigh or Texas
$160k-$258k/yr OnsiteFull Time
Crestron
Crestron: Designs and manufactures advanced automation and control systems.
Bachelor's degree required; master's preferred in computer science, electrical engineering, or related field. Requires embedded firmware expertise, C/C++ or Java, networking, multimedia systems, software architecture, and team mentorship.
TCP, UDP, HTTP/S, RTP, RTSP, H.264/H.265, VP9, VAAPI, GStreamer, FFmpeg, OpenMAX, OpenGL, C, C++, Java, Linux, Android, RTOS
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4w
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Principal AI Engineer
Hartford or Columbus or Charlotte or Chicago
$168k-$253k/yr HybridFull Time
The Hartford
The HartfordNYSE: HIG: Provides business and personal insurance, group benefits, and investments.
10+ YOE10+ years building cloud-native, data-intensive AI/ML platforms; strong Python and Typescript; cloud experience (AWS/GCP/Azure); experience with distributed systems, embeddings, vector search, and MLOps/LLMOps.
AWS, GCP, Google Cloud, Azure, Python, Typescript, CI/CD, NoSQL, HPCs, LangGraph, crewai, RAG, vector stores, ANN, KNN
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2mo
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Principal Architect
Melville, New York, United States
$170k-$190k/yr OnsiteFull Time
Accommodations Plus International
Accommodations Plus International: Provides crew accommodation and travel logistics technology solutions.
10+ YOE10+ years software engineering with principal/staff architecture experience, strong AWS cloud architecture, Java backend and Angular frontend experience, data systems (Postgres/Oracle), expertise designing AI/LLM integrations and AI development lifecycle, compliance-minded design (PCI/PII), strong communication and documentation skills.
AWS, Java, Angular, Postgres, Oracle
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Principal Machine Learning Engineer, YM2026PMLE
Connecticut or Nebraska or Indiana or Arizona or Michigan or Missouri or Massachusetts or Illinois or Maine or California or Florida or Minnesota or Colorado or Iowa or Kansas or Mississippi or Georgia or Alabama or Kentucky or Idaho or Maryland or Norwalk
$177k-$217k/yr RemoteFull Time
FactSet
FactSetNYSE: FDS: Provides integrated financial data and analytical software solutions.
6+ YOEMaster’s degree in a technical field, 6 years of related experience, and 3 years using Python, Node.js, MongoDB, RabbitMQ, Redis or Memcached, Git, Elasticsearch, scikit-learn, NumPy, spaCy, NLP, and machine learning methods.
Node.js, MongoDB, RabbitMQ, Redis, Memcached, Git, Python, Elasticsearch, scikit-learn, NumPy, spaCy, SVM, XGBoost, RNN, LSTM
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