143 ai application developer jobs at 90 companies in Fairfield, CT

PromotedHiringCafe
Founding Machine Learning / AI Search Engineer
Cupertino, CA, US
$160k-$310k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Build the ML and AI search behind HiringCafe — ranking, recommenders, retrieval, and LLM agents that surface jobs people would never find on their own.
Python, PyTorch, Elasticsearch, LLMs
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
1mo
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Sr. Data & AI Application Engineer (59_2026.2)
New York, New York, United States
$165k-$180k/yr OnsiteFull Time
Affinity Solutions
Affinity Solutions: Provides consumer purchase insights through credit card transaction data analysis.
6+ YOE6+ years building enterprise applications with React/Next.js and Node.js, strong SQL and Python skills, experience with cloud data platforms (Snowflake/BigQuery/Redshift), REST APIs, and ML/AI integrations.
Snowflake, Snowpark, Snowflake Cortex, Streamlit, Python, SQL, ThoughtSpot, Next.js, React, Node.js, AWS Cognito, Claude API, MCP, Slack Bolt, AWS EC2, Bitbucket, JIRA, GenAI tools
1mo
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Temporary Financial Application Developer
California or New York City or Boston or San Francisco or Washington, D.C. or Seattle or Santa Monica
$115k-$173k/yr HybridFull Time, Temporary
Fenwick & West
Fenwick & West: Legal services for technology and life sciences companies.
5+ YOE5+ years supporting and developing financial applications, experience with application development (UI, middle tier, stored procedures), SQL, Microsoft Windows support, APIs, automation and AI/ML familiarity; Bachelor's in CS/IS or equivalent experience.
Microsoft Windows, SQL, APIs, AI services, AI/ML frameworks
1w
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AI Engineer
New York, New York, United States
$300k-$350k/yr OnsiteFull Time
Newmark
NewmarkNASDAQ: NMRK: Commercial real estate brokerage and property management services.
5+ YOEBachelor's in CS/ML or related,5+ years software engineering,2+ years building AI/LLM applications,experience with agentic AI,production C++ and Python skills,LLM patterns,APIs,microservices,cloud,and responsible AI practices.
C++, Python
2mo
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AI Software Developer
Westport, Connecticut, United States
$25-$75/hr OnsiteContract
Boathouse
Boathouse: A full-service marketing and advertising agency.
Experience building complex, data-sensitive apps and programs using AI; able to build applications and IT infrastructure.
3w
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Java Web Application Developer
Greenwich, Connecticut, United States
HybridFull Time
Interactive Brokers
Interactive BrokersNASDAQ: IBKR: Automated global electronic brokerage and trading services provider.
3+ YOEMaster's in CS or related, 3+ years web application development, knowledge of Oracle/PL/SQL and Java, experience with Spring (Boot/MVC), SPA frameworks (Angular/Vue.js), HTML5/CSS3/TypeScript, Bitbucket/Gerrit, Gradle, UNIX/Linux; familiarity with AI-assisted coding tools.
Oracle, PL/SQL, Java, Spring Framework, Spring Boot, Spring MVC, Angular, Vue.js, HTML5, CSS3, TypeScript, Bitbucket, Gerrit, Gradle, Claude Code, UNIX, Linux
2mo
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Senior AI Engineer
New York, New York, United States
$120k-$165k/yr OnsiteFull Time
Morgan Stanley
Morgan StanleyNYSE: MS: Global financial services firm providing investment and wealth management.
5+ YOE5+ years experience building production-grade Python AI/LLM applications; hands-on with FastAPI/Flask, SQL, concurrency, testing, production reliability, and mentoring; experience with cloud-native and container technologies preferred.
Python, FastAPI, Flask, SQL, Large Language Models (LLM), OpenTelemetry, Grafana, Prometheus, Docker, Kubernetes, Kafka, Redis, Jenkins, GitHub Actions
3mo
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Senior AI Engineer (Core) - Supernal
New York, New York, United States
RemoteFull Time
Infinity Constellation
Infinity Constellation: Builds and scales a portfolio of AI-native service companies.
Senior AI Engineer with experience in agentic workflows, memory, retrieval, and production-grade AI systems; strong software engineering across applications and infrastructure.
LangChain, LangGraph, LlamaIndex, AutoGen, CrewAI, Pinecone, Chroma, Weaviate, Qdrant, pgvector, Django, DRF, ASGI, PostgreSQL, Kubernetes
1mo
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Applied AI Engineer
New York City, New York, United States
$200k-$300k/yr HybridFull Time
Didero
Didero: AI agents for automating global procurement and supply chains.
8+ YOE8+ years engineering experience building and deploying LLM-based applications and AI agents; strong Python (Django/FastAPI), familiarity with TypeScript/React, experience with LangChain, LlamaIndex, Pydantic, and modern AI primitives (RAG, embeddings, evals).
Pydantic, LangChain, LlamaIndex, LLMs, Python, Django, FastAPI, TypeScript, React, C++, Java, Rust, Go
2w
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AIT - AI Senior Developer Manager
Tampa or Boston or New York City
$99k-$252k/yr OnsiteFull Time
PwC
PwC: Providing audit, tax, and management consulting services to businesses.
4+ YOEBachelor's degree, at least 4 years experience, experience building scalable AI-enabled applications, mentoring developers, API management, CI/CD, microservices, and strong software engineering practices.
LLM, RAG pipelines, ATDD, CI/CD, API Management, Microservices
1mo
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Senior Application Security Engineer
United States or Canada or San Francisco or New York City or Seattle
$190k-$273k/yr RemoteFull Time
Apollo.io
Apollo.io: AI-powered platform for B2B sales intelligence and outreach automation.
5+ YOE5+ years software engineering or application security experience; strong coding skills (Ruby, Python), Linux and GCP familiarity, deep AppSec/vulnerability management, pen-testing and SAST experience, AI security, and strong communication.
Ruby, Python, Linux, GCP, SAST
1mo
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Senior Application Engineer I
Washington D.C. or Chicago or New York City or Los Angeles
$133k-$183k/yr HybridFull Time
Kirkland & Ellis
Kirkland & Ellis: Provides legal services for corporate, litigation, and transactional matters.
8+ YOE8+ years in advanced application support/configuration, experience with e-discovery and litigation platforms, APIs/ETL/data integrations, Microsoft SQL, Linux, REST APIs, PowerShell, emerging AI, strong communication and problem-solving.
Relativity Server/One, Reveal, BrainSpace, AI, APIs, REST APIs, ETL, data pipelines, Microsoft SQL, Linux, PowerShell
1mo
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Staff Application Security Engineer
San Francisco or New York City or Pittsburgh
$228k-$290k/yr HybridFull Time
Abridge
Abridge: Automates medical documentation through AI-powered speech analysis
10+ YOE10+ years in application security, expertise in threat modeling, secure code review, vulnerability management, incident response, programming (Python, NextJS), cloud security (GCP), Kubernetes, and AI/ML security; strong communication and leadership skills.
Python, NextJS, GCP, Kubernetes
2mo
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AI Accelerated Trading Application Engineer - Aladdin Trader, Vice President
New York, New York, United States
$162k-$215k/yr HybridFull Time
BlackRock
BlackRockNYSE: BLK: Provides investment management and financial technology services globally.
7+ YOESenior software engineer with 7+ years, BS/MS in CS/Engineering, strong Java/Spring, microservices, AI tooling, and distributed systems experience.
Java, Spring, Spring Boot, Hibernate, Kafka, REST, gRPC, Git, Maven, JUnit, JUnit/Test Framework, Docker, Kubernetes, Terraform, Ansible, Redis, Cassandra, MongoDB, Zookeeper, Azure, AWS, GCP
3w
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Staff AI Engineer
Miami or New York or San Francisco or Mexico City or United States
RemoteFull Time
Félix Pago
Félix Pago: Remittance platform for money transfers via WhatsApp messaging.
8+ YOE8+ years software engineering experience with infrastructure and systems development; 2+ years building production LLM/AI applications; strong Python, system architecture, containerization (Docker/Kubernetes), CI/CD, observability, RAG and agentic systems experience.
Python, Docker, Kubernetes, CI/CD, LLM APIs, LLMOps, RAG, vector databases, Open CLAW, Hermes, WhatsApp
3w
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Gen AI Engineer
New York City, New York, United States
$142k-$213k/yr OnsiteFull Time
Citi
CitiNYSE: C: Providing global banking, investment, and wealth management services.
6+ YOE6+ years experience in applications development in financial services, people and project management, hands-on ML/GenAI engineering (prompting, RAG, model training/fine-tuning), Python/Java, data platforms (SQL, Spark, Snowflake), REST APIs and CI/CD.
Python, Java, Agent Development Kit, scikit-learn, PyTorch, TensorFlow, VertexAi, SQL, Spark, Databricks, Snowflake, REST API, Git
3w
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Gen AI Engineer
New York, New York, United States
$142k-$213k/yr OnsiteFull Time
Citi
CitiNYSE: C: Global diversified financial services holding.
6+ YOE6+ years experience in applications development in financial services; experience managing projects and teams; strong ML and engineering skills including Python/Java, ML frameworks, large-scale data platforms, REST APIs and Git; Bachelor's required, Master's preferred.
Python, Java, Agent Development Kit, scikit-learn, PyTorch, TensorFlow, VertexAi, SQL, Spark, Databricks, Snowflake, REST API, Git
2mo
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Generative AI Lead Engineer
Dallas or Stamford or Chicago
$120k-$140k/yr HybridFull Time
Cognizant
CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.
5+ YOEStrong experience in Generative AI, LLMs, prompt engineering; hands-on with .NET, React, Python; experience with RAG architectures, API integrations; Azure cloud; ability to deploy AI-enabled applications.
.NET, React, Python, LangChain, LlamaIndex, Claude, Azure, RAG
4d
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AI Automation Engineer
California or Illinois or Texas or Massachusetts or Colorado or Connecticut or Maryland or New Jersey or Washington or Virginia or Alaska or San Francisco or New York City
$92k-$194k/yr OnsiteFull Time
Proofpoint: Provides cybersecurity solutions for email, cloud, and data protection.
8+ YOEBachelor's degree,8+ years professional experience with 2+ years focused on AI,proven AI application development,advanced prompt engineering,Python,enterprise orchestration and LLM platform experience,knowledge of GTM post-sales systems.
Python, Amazon Quick Automate, UnifyApps, Anthropic, OpenAI, Amazon Bedrock, OpenAI Codex, Claude CoWork, MCP (Model Context Protocol), Salesforce, Gainsight, Totango, Clari, Gong, Pendo, Snowflake, Redshift, AWS, Microsoft Power BI, LLMs
3w
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Senior AI Software Engineer
New York, New York, United States
$175k-$220k/yr OnsiteFull Time
Assured Guaranty
Assured GuarantyNYSE: AGO: Provides financial guaranty insurance for municipal and infrastructure bonds.
5+ YOE5+ years software engineering; experience building production LLM applications, agent-based AI workflows, APIs, distributed systems; strong Python or TypeScript skills; AWS/cloud-native and enterprise governance experience.
Copilot, Claude Code, Python, TypeScript, AWS, LLM, APIs
2mo
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AI Solutions Engineer
Seattle or San Francisco or Scottsdale or Atlanta or Sterling or Boston or New York City
HybridFull Time
Axon
AxonNASDAQ: AXON: Develops weapons and software for law enforcement and safety.
5+ YOE5+ years building business applications, automation, or analytics; strong SQL and Python skills; experience with AI-assisted development tools, APIs/integrations, workflow automation, and partnering with finance stakeholders.
Cursor, Claude, Codex, GitHub Copilot, SQL, Python, APIs, LLM APIs, Microsoft Power BI, Alteryx, Microsoft Power Automate, Databricks, Snowflake