12 software engineer operating systems jobs at 11 companies in Connecticut

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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
1w
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Senior Principal Software Engineer
United States or Phoenix or Dallas or Charlotte or California or Connecticut or New York or Colorado or Illinois or Minnesota or Washington or Nevada or Maryland or New Jersey or Hawaii or District of Columbia or North Dakota or Mississippi or Rhode Island or Vermont or Wyoming
$150k-$226k/yr RemoteFull Time
Shutterfly
Shutterfly: Manufacturer and retailer of personalized photo products and gifts.
12+ YOEBachelor's in engineering or computer science and 12+ years of software engineering experience, distributed systems expertise, large-scale architecture, cloud operations, coding, and technical strategy leadership.
LLMs, vector databases, orchestration frameworks, A/B testing
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Software Engineer L3
United States or California or Colorado or Connecticut or Hawaii or Illinois or Maryland or Massachusetts or Minnesota or New Jersey or New York or Vermont or Washington or Pennsylvania or District of Columbia
$139k-$204k/yr RemoteFull Time
Twilio
TwilioNYSE: TWLO: Cloud communications platform for building customer engagement applications.
4+ YOE4+ years building and operating resilient backend services. Hands-on experience with Go/Java/Python, cloud (AWS and Microsoft Azure), Terraform, distributed systems (Kafka), and IaC; familiarity with observability and high-throughput systems.
Go (Golang), Java, Python, AWS, AWS EC2, AWS S3, AWS Aurora, AWS DynamoDB, Microsoft Azure, Microsoft Virtual Machines, Microsoft Blob Storage, Azure SQL, Microsoft Cosmos DB, Terraform, Kafka, Docker, Kubernetes, OpenTelemetry, Claude Code, mail transfer agent (MTA)
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Software Engineer L3
United States or Colorado or Hawaii or Illinois or Maryland or Massachusetts or Minnesota or New Jersey or New York or Vermont or District of Columbia or Washington or California or Connecticut or Pennsylvania or San Francisco
$139k-$204k/yr RemoteFull Time
Twilio
TwilioNYSE: TWLO: Cloud communications platform for programmable messaging, voice, and email.
4+ YOE4+ years building and operating resilient backend services; production experience with Go/Java/Python, Terraform, AWS and Microsoft Azure; strong distributed systems and observability skills.
Go, Java, Python, AWS, EC2, S3, Aurora, DynamoDB, Microsoft Azure, Microsoft Azure Virtual Machines, Microsoft Blob Storage, Microsoft Azure SQL, Microsoft Cosmos DB, Terraform, Kafka, Docker, Kubernetes, OpenTelemetry, Claude Code, MTA
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Senior Software Engineer, Wikidata Platform
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
$117k-$181k/yr RemoteFull Time
Wikimedia Foundation
Wikimedia Foundation: Operates Wikipedia and provides global free knowledge infrastructure.
5+ YOE5+ years backend/platform engineering on distributed systems, strong knowledge-graph or database experience, proficiency in Java or C++, observability and production operations experience.
Java, C++, Kafka, Flink, Docker, Kubernetes, SPARQL, RDF
1w
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Systems Engineer 3, Yale School of Management
New Haven, Connecticut, United States
$94k-$141k/yr HybridFull Time
Yale University
Yale University: Providing higher education and conducting advanced scientific research.
4+ YOEBachelor's degree and four years of experience or equivalent; knowledge of computer architecture, operating systems, data structures, software engineering, configuration management, and technical documentation.
Terraform, Packer, Ansible, GitHub, HashiCorp Vault, SSH, Azure, S3, Proxmox, VMware, OpenShift, Windows, Linux, SSL/TLS
3w
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Founding Software Engineer - AI & Operations (Full-Stack)
Wallingford, Connecticut, United States
OnsiteFull Time
United Concrete Products
United Concrete Products: Manufacturer of precast and prestressed concrete infrastructure products.
3+ YOE3+ years engineering experience with ownership of a production system; strong full‑stack fundamentals, SQL, LLM API production integrations, OCR/document extraction, and self-directed problem solving.
OpenAI, Anthropic, OCR, MaintainX, Claude Code, Copilot, SQL
1d
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Senior Engineer, Distribution System Planning (Hybrid Schedule)
Westwood or Berlin
$129k-$144k/yr HybridFull Time
Eversource Energy
Eversource EnergyNYSE: ES: Delivers electricity, natural gas, and water to New England customers.
5+ YOEBachelor's degree in engineering and at least 5 years of distribution planning, design, and operations experience. Knowledge of power systems, distribution planning, and electrical simulation software required.
Synergi Electric, CYME
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Staff Engineer, Data and AI
United States or Canada or Mexico or Alaska or Arizona or California or Colorado or Connecticut or District of Columbia or Florida or Georgia or Illinois or Iowa or Kansas or Maryland or Massachusetts or Michigan or Minnesota or Missouri or New Jersey or New York or North Carolina or Oregon or Pennsylvania or Rhode Island or Texas or Vermont or Virginia or Washington or Wisconsin or Alberta or British Columbia or Ontario
RemoteFull Time
Change.org
Change.org: Hosts and distributes digital petitions for social impact.
7+ YOE7+ years of software engineering experience; expertise in distributed data systems, Python, SQL, cloud-native infrastructure, AI platforms, production operations, observability, and technical leadership.
Python, SQL, Airflow, Kafka, Redshift, Glue, Vector DBs, Spark, AWS, GCP
1mo
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AI Solutions Engineer
United States or Canada or California or Washington or New York or New Jersey or Connecticut
$195k-$280k/yr RemoteFull Time
Affirm
AffirmNasdaq: AFRM: Financial platform providing installment loans for consumer purchases.
Experience building, deploying, and maintaining production AI systems; strong software engineering and systems design skills; comfortable with Python, CI/CD, containerization, and production operations; experience integrating with Workday, Snowflake, and data governance.
Snowpark Container Services, Quicksilver, Snowflake, Workday, Notion, Python, Git, GitHub, CI/CD, dbt
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Senior AI Engineer
United States or New York City or Palm Beach or Los Angeles or Miami or Greenwich or Westchester County or The Hamptons or San Francisco or Manhattan
$190k-$250k/yr RemoteFull Time
Atria Health Institute
Atria Health Institute: Membership-based concierge practice providing preventive, precision-based medical care.
4+ YOE4+ years building and operating LLM-powered production ML systems, strong Python, backend framework experience (FastAPI/Flask), LLM orchestration and retrieval design, Snowflake/dbt/Dagster/Airflow familiarity, evaluation systems, HIPAA/PHI knowledge, and strong written communication.
Python, FastAPI, Flask, Snowflake, dbt, Dagster, Airflow, vLLM, Triton, TGI, SGLang, LOINC, SNOMED CT, ICD-10, RxNorm, FHIR, HL7
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Senior Director, AI Delivery & Operations
Morrisville or New York or Colorado or California or Maryland or Ohio or Virginia or New Jersey or Pennsylvania or Illinois or Georgia or Texas or Massachusetts or Florida or Connecticut
$168k-$278k/yr RemoteFull Time
Thermo Fisher Scientific
Thermo Fisher ScientificNYSE: TMO: Sells equipment and chemicals for scientific research and healthcare.
12+ YOEBachelor's required, advanced degree preferred; 12+ years in software/platform/technology leadership with experience delivering AI/ML/GenAI systems to production and building scalable platform architectures.
Codex, RPA, MLOps