143 ai application developer jobs at 90 companies in Fairfield, CT
🚀PromotedHiringCafe
Founding Machine Learning / AI Search Engineer
Cupertino, CA, US
$160k-$310k/yrOn-SiteFull Time
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.
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).
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.
California or New York City or Boston or San Francisco or Washington, D.C. or Seattle or Santa Monica
$115k-$173k/yrHybridFull Time, Temporary
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
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.
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
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
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.
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).
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
United States or Canada or San Francisco or New York City or Seattle
$190k-$273k/yrRemoteFull Time
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.
Washington D.C. or Chicago or New York City or Los Angeles
$133k-$183k/yrHybridFull Time
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
AI Accelerated Trading Application Engineer - Aladdin Trader, Vice President
New York, New York, United States
$162k-$215k/yrHybridFull Time
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.
Miami or New York or San Francisco or Mexico City or United States
RemoteFull Time
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.
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.
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.
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/yrOnsiteFull 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
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
Seattle or San Francisco or Scottsdale or Atlanta or Sterling or Boston or New York City
HybridFull Time
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