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114 system software engineer jobs at 71 companies in Connecticut

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
2mo
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System and Software Engineer (MBSE / SysML) – Aerospace
East Hartford, Connecticut, United States
HybridMultiple Commitments Available
Sopra Steria
Sopra SteriaEuronext Paris: SOPR: Provides digital transformation consulting and information technology services.
3+ YOEBachelor's in engineering; experience with MATLAB/Simulink for embedded software; experience with Cameo Systems Modeler; SysML; DO-178C; aerospace domain.
MATLAB, Simulink, Cameo Systems Modeler
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2mo
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Software Engineer
Illinois or Kentucky or Kansas or Idaho or Washington or Michigan or Florida or California or Texas or Oklahoma or Tennessee or North Carolina or Minnesota or Massachusetts or Indiana or Georgia or Arizona or Missouri or Alabama or Connecticut or District of Columbia or South Carolina or Oregon
$79k-$119k/yr HybridFull Time
Relativity
Relativity: AI-powered platform for legal discovery and data intelligence.
Backend software engineering role; experience with C# or Python; strong distributed systems knowledge; cloud experience preferred.
C#, Python, GitHub Actions, Azure, Kubernetes
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1mo
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Software Engineer - Integrations
Manchester or Canada or United Kingdom or Alabama or Arizona or California or Colorado or Connecticut or District of Columbia or Florida or Georgia or Iowa or Idaho or Illinois or Indiana or Kansas or Massachusetts or Maryland or Maine or Michigan or Minnesota or Missouri or North Carolina or Nebraska or New Hampshire or New Jersey or New Mexico or New York or Ohio or Oklahoma or Oregon or Pennsylvania or South Carolina or Tennessee or Texas or Utah or Virginia or Vermont or Washington or Wisconsin or West Virginia
£50k-£80k/yr HybridFull Time
Mark43
Mark43: Provides cloud-native records and dispatch software for first responders.
3+ YOE3+ years backend software engineering with distributed systems and integrations; experience designing/operating APIs, webhooks or messaging systems; familiarity with Java, TypeScript/JavaScript, REST, SQL/MySQL; strong communication skills; must be authorized to work in the hiring country.
Java, TypeScript, JavaScript, REST, SQL, MySQL, CI/CD, Claude Code Enterprise
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2w
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Staff Software Engineer
United States or Alabama or Arizona or Arkansas or California or Colorado or Connecticut or Florida or Georgia or Hawaii or Idaho or Illinois or Indiana or Iowa or Kansas or Kentucky or Maryland or Massachusetts or Michigan or Minnesota or Missouri or Nevada or New Hampshire or New Jersey or New Mexico or New York or North Carolina or Ohio or Oklahoma or Oregon or Pennsylvania or Rhode Island or South Carolina or Tennessee or Texas or Vermont or Virginia or Washington or Wisconsin
$178k-$223k/yr RemoteFull Time
Fuze Health
Fuze Health: Integrated digital health, home diagnostics, and virtual pharmacy platform.
8+ YOEBachelor's in CS or equivalent, 8+ years software engineering with 3+ years as tech lead/architect, expertise in Ruby on Rails or Python, PostgreSQL, TypeScript/JavaScript, AWS; system design and healthcare compliance experience required.
Ruby on Rails, Python, PostgreSQL, TypeScript, JavaScript, AWS, ECS, RDS, Lambda, VPC, EHR
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2mo
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Senior Engineer – Agile Software Development – Engine System Software P3 (Onsite)
East Hartford, Connecticut, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
5+ YOEBachelor’s in STEM; 5 years engineering experience or 3 years with advanced degree; Agile software development; safety-critical software; DO-178B knowledge.
Agile, Software development
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1mo
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Principal Software Engineer
Warsaw or Fridley or Mounds View or Brooklyn Park or Fort Worth or North Haven or Jacksonville or Boston or Lafayette
$153k-$229k/yr HybridFull Time
Medtronic
MedtronicNew York Stock Exchange: MDT: Develops and manufactures medical devices and digital health solutions.
5+ YOEBachelor’s degree + 7+ years software engineering or advanced degree + 5+ years; experience designing and developing scalable systems for manufacturing operations; mentoring, requirements capture, database architecture, CI/CD, and cross-functional collaboration; ability to travel 25%.
Ignition, deviseWISE, Microsoft Azure, AWS, Docker, Kubernetes, Jenkins, Terraform, React, Angular, Node.js, ASP.NET, HTML5, CSS3, WebAPI, Microservices Architecture, CI/CD Pipelines, RESTful API Design, Java, C++, .NET, Scala, Lua, Python, SQL
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1w
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Software Integration Engineer
Groton, Connecticut, United States
$90k-$100k/yr OnsiteFull Time
General Dynamics Mission Systems
General Dynamics Mission SystemsNYSE: GD: Designs and manufactures defense and mission-critical technology solutions.
1+ YOEBachelor's in software/engineering/math +1 year (or Master's); U.S. citizenship and eligibility for Secret clearance; experience with system integration, virtualization, containers, scripting, networking, and CI/CD tools.
Windows, Linux, Kubernetes, VMware, Hyper-V, Docker, Python, Bash, PowerShell, TCP/IP, DNS, SQL, Git, Jenkins, Ansible
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1w
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Staff Software Engineer, Platform
Arkansas or California or Colorado or Connecticut or Florida or Illinois or Louisiana or Massachusetts or Michigan or Minnesota or New Jersey or New York or North Carolina or Ohio or Oregon or Pennsylvania or Tennessee or Texas or Virginia or Washington or Wisconsin
$163k-$185k/yr RemoteFull Time
EasyLlama
EasyLlama: Mobile-first platform for employee compliance and harassment prevention training.
10+ YOE10+ years software engineering experience; expert Ruby on Rails and React; deep Kubernetes, Docker, AWS, CI/CD, distributed systems, API design, and production reliability experience.
Ruby on Rails, React, Kubernetes, Docker, AWS, CI/CD, Terraform, Helm, RabbitMQ, SQS, NATS, Stripe, SQL
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1mo
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Staff Software Engineer - AI
Hartford or Charlotte
$128k-$191k/yr HybridFull Time
The Hartford
The HartfordNYSE: HIG: Provides business and personal insurance, group benefits, and investments.
Deep AI/ML and software engineering expertise with experience building agentic and generative AI systems; proficiency in Python/Java/C++; cloud and MLOps experience; test automation and Git skills; strong problem-solving and collaboration.
Python, Java, C++, Playwright, MLflow, Kubeflow, Docker, Git, LangGraph, Crew AI, Semantic Kernel, AWS, Azure, GCP, LLMOps, MLOps, Gemini, Claude
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3w
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Principal Software Engineer - AI
Woodland Hills or Los Angeles or Alabama or Arizona or California or Colorado or Connecticut or Florida or Georgia or Illinois or Indiana or Kentucky or Massachusetts or Michigan or North Carolina or New Jersey or Nevada or New York or Ohio or Pennsylvania or South Carolina or Texas or Utah or Virginia
$200k-$230k/yr HybridFull Time
Convoso
Convoso: AI-powered contact center platform for outbound sales teams.
10+ YOE10+ years software engineering experience, 5+ years backend work in Python or PHP, expertise building LLM-based AI agent systems, production LLM API integration, MySQL proficiency, and automated testing for AI workflows.
LLM, OpenAI, Claude, GitHub Copilot, MySQL, Python, Django, Flask, PHP, Symfony, Laravel, React
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1mo
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Software Developer, Backend Ads
San Francisco or Waterloo or New York City or Connecticut or New Jersey or Seattle or Los Angeles or San Diego
$149k-$299k/yr HybridFull Time
TextNow
TextNow: Provides free, ad-supported mobile calling and texting services.
4+ YOE4+ years software engineering experience; strong CS fundamentals; experience with distributed systems, databases, APIs, and cloud infrastructure; proficiency in one or more modern programming languages; strong communication and collaboration skills.
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1mo
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Performance Software Engineer
California or Colorado or Connecticut or Florida or Georgia or Illinois or Kansas or Massachusetts or Maryland or Maine or New Jersey or North Carolina or New York or Oregon or Tennessee or Texas or Virginia or Washington or Austin or Tampa or Chicago
$150k-$230k/yr HybridFull Time
NinjaOne
NinjaOne: Unified IT platform for automated endpoint management and security.
6+ YOE6+ years software engineering experience (including 2+ years with k6/load test frameworks and JavaScript); 2+ years cloud native AWS experience; bachelor\u0002s degree in CS/CE/IT or equivalent; expertise in distributed systems, containers, scripting (Bash/Python).
k6, JavaScript, Grafana, InfluxDB, Java, Kotlin, C++, Golang, Postgres, AWS, PostgreSQL, Bash, Python
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1mo
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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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1mo
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Senior Software Engineer
United States or New Jersey or New York or Washington or Hawaii or Alaska or Maryland or Connecticut or Rhode Island or Massachusetts or Nevada or Oregon or Arizona or Colorado or Wyoming or Texas or North Dakota or Minnesota or Missouri or Illinois or Wisconsin or Florida or Georgia or Michigan or Ohio or Virginia or Pennsylvania or Delaware or Vermont or New Hampshire or Maine or Utah or Idaho or Montana or New Mexico or South Dakota or Nebraska or Kansas or Oklahoma or Iowa or Arkansas or Louisiana or Mississippi or Alabama or Tennessee or Kentucky or Indiana or South Carolina or North Carolina or West Virginia or California
$94k-$179k/yr RemoteFull Time
Mercury Insurance
Mercury InsuranceNYSE: MCY: Provider of personal and commercial insurance coverage.
5+ YOE1+ MgmtBachelor's in CS or related (or equivalent experience); 5+ years software programming experience; 2+ years with technologies used at Mercury; 1+ year leading teams; proficiency with Java, Spring/Spring Boot, REST, MongoDB, Docker, Kubernetes, cloud and modern distributed system design.
Java, Python, Go, C++, JavaScript, Spring Framework, Spring Boot, REST, gRPC, MongoDB, Claude, ChatGPT, IntelliJ, VS Code, Apache Kafka, Apache NiFi, Amazon SQS, MS MQ, Apache Camel, Docker, Kubernetes, AWS, Google Cloud, Azure
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3w
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Software Engineer III – IntelliScript (Remote)
Brookfield or New York City or Alaska or California or Connecticut or Illinois or Maryland or Massachusetts or New Jersey or Pennsylvania or Virginia or Washington or District of Columbia
$105k-$199k/yr RemoteFull Time
Milliman
Milliman: Global provider of actuarial and risk management consulting services.
5+ YOE5+ years software engineering experience focused on data pipelines and backend systems; proficiency with C# (.NET), SQL, AWS, microservices, event-driven architectures, CI/CD and DevOps practices; strong problem-solving and mentoring skills.
C# (.NET), SQL, AWS, GitHub workflows, Terraform, CI/CD, DevOps, Agile/SAFe, EHR, FHIR, HL7
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1mo
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Department 425 Software Platform Test Engineer
Groton, Connecticut, United States
HybridFull Time
General Dynamics Electric Boat
General Dynamics Electric BoatNYSE: GD: Designs, builds, and maintains submarines for the U.S. Navy.
5+ YOEBS in Computer Engineering/CS/Electrical/Embedded/Systems Engineering, 5+ years post-graduate engineering experience, software test experience, test planning, test automation, and configuration management skills.
IBM Rational DOORS, GitLab, LabVIEW, Digital Twins, MATLAB Simulink, Squish, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
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1w
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Software Engineer, Wikidata Platform
San Francisco or Arizona or California or Colorado or Connecticut or District of Columbia or Florida or Georgia or Idaho or Illinois or Indiana or Iowa or Maryland or Massachusetts or Michigan or Minnesota or Missouri or New Jersey or New Mexico or New York or North Carolina or Ohio or Oklahoma or Oregon or Pennsylvania or Puerto Rico or Rhode Island or Tennessee or Texas or Utah or Vermont or Virginia or Washington or West Virginia or Wisconsin or Wyoming or Brazil or Canada or Colombia or France or Germany or Ghana or India or Indonesia or Italy or Kenya or Mexico or Morocco or Netherlands or Poland or Singapore or South Africa or Spain or Switzerland or United Kingdom
$95k-$149k/yr RemoteFull Time
Wikimedia Foundation
Wikimedia Foundation: Operates Wikipedia and provides global free knowledge infrastructure.
2+ YOE2+ years backend/platform engineering on distributed systems, proficiency in Java or C++, experience with production-grade services, observability, and data processing technologies.
Java, C++, Kafka, Flink, Docker, Kubernetes, RDF, SPARQL
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2mo
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Sr. Software Engineer, Testing
Westport, Connecticut, United States
$350k-$500k/yr HybridFull Time
Bridgewater Associates
Bridgewater Associates: Manages global macro hedge funds for institutional investors.
4+ YOE4+ years in rigorous engineering environments; 2+ years in SDET/testing architecture; strong diagnostic and system design skills; exposure to low-latency, agentic testing.
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1mo
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Submarine Control System (SCS) Software and Certification Engineer
Washington Navy Yard or Groton
OnsiteFull Time
Serco
SercoLondon Stock Exchange: SRP: Provides professional outsourcing services to governments worldwide.
10+ YOEUS citizen with active DoD Secret clearance, Bachelor's in engineering (or equivalent experience), 10 years experience, project/program management, FBW SCS knowledge, Matlab/Simulink and Microsoft Office proficiency, strong communication and analytical skills.
Matlab, Simulink, Microsoft Office, NNPI, CAC
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Pega Software Engineer
Pennsylvania or Maryland or Washington or North Carolina or Louisiana or Kentucky or Kansas or Indiana or Illinois or Georgia or Iowa or Florida or Colorado or California or Delaware or Connecticut or Arkansas or Arizona or Alabama or Alaska or Nevada or Vermont or Tennessee or Idaho or Oklahoma or Hawaii or Mississippi or Utah or New Hampshire or New Mexico or Wyoming or North Dakota or South Dakota or Rhode Island or West Virginia or Montana or Texas or District of Columbia or Ohio or New Jersey or Oregon or South Carolina or Missouri or Virginia or Massachusetts or Nebraska or Minnesota or Michigan or Wisconsin or New York or Maine
$86k-$139k/yr RemoteFull Time
Highmark Health
Highmark Health: Provides health insurance and integrated medical care services.
3+ YOECertified Pega Senior System Architect (CSSA) v8.x+, Bachelor's in CS or related, 3+ years in modern programming and system design, REST/web services knowledge, agile experience.
Pega, Java, Python, JavaScript, ACE, IIB/ITX, Informatica, React, Angular, NodeJS, NoSQL databases, HTML5, CSS, Google Cloud Platform, Amazon Web Services, RTC, Jira
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