148 senior fastapi developer jobs at 91 companies in Greenburgh, NY

1w
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Senior Full-Stack Developer (React + Python/FastAPI)
Jersey City or Dallas or Tampa
$75k-$150k/yr HybridFull Time
DTCC
DTCC: Provides post-trade infrastructure for the global financial services industry
6+ YOE7+ years full-stack experience with React, Python/FastAPI, SQL, Docker, and cloud; strong design, performance, security, and mentoring skills.
React, Python, FastAPI, SQL, Snowflake, Docker, Nginx, AWS EC2
2mo
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Senior Application Engineer
Seattle or Madison or Princeton or Cambridge Crossing
$138k-$183k/yr OnsiteFull Time
Bristol Myers Squibb
Bristol Myers SquibbNew York Stock Exchange: BMY: Develops and distributes innovative medicines for serious diseases.
5+ YOE5+ years in software/cloud engineering; AWS-native; Python/FastAPI; TypeScript/Node; CI/CD; experience with LLM/agentic AI; MCP/FastMCP; security, IAM, VPC; knowledge of data stores.
Python, FastAPI, TypeScript/Node, AWS, Terraform, AWS CDK, CloudFormation, LangGraph, LangChain, PydanticAI, OpenAI, Anthropic, Gemini, AWS Bedrock
1mo
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Senior Software Engineer
New York City or Arizona or California or Colorado or Connecticut or Florida or Georgia or Maine or Maryland or Massachusetts or Michigan or Minnesota or New Jersey or New York or North Carolina or Oregon or Rhode Island or South Carolina or Tennessee or Texas or Virginia or Utah or Wisconsin
$165k-$185k/yr RemoteFull Time
Electric
Electric: Provides automated IT management and security services for businesses.
8+ YOE8+ years backend experience with modern Python stack, leadership experience, proficiency in Postgres/SQLAlchemy, AWS, Terraform, FastAPI, React/TypeScript, observability, and familiarity with AI-assisted development.
Python, FastAPI, Pydantic, PostgreSQL, SQLAlchemy, Alembic, Temporal, Redis, AWS RDS, AWS S3, AWS SQS, AWS DynamoDB, AWS ECS, AWS IAM, Terraform, React, TypeScript, Claude Code
3w
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Senior Python AI/ML Developer
Jersey City, New Jersey, United States
OnsiteFull Time
Virtusa
Virtusa: Digital engineering and IT business transformation services provider.
8+ YOE8+ years software development experience, strong Python and OOP skills, experience with Django/Flask/FastAPI, REST APIs, relational and NoSQL databases, asynchronous processing, and Git.
Python, Django, Flask, FastAPI, PostgreSQL, MySQL, Oracle, SQL, MongoDB, DynamoDB, Redis, Git
2mo
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Senior Software Engineer
New York or Israel
HybridFull Time
Qodo
Qodo: AI-powered platform for automated code review and integrity.
7+ YOE7+ years building high-performance backend systems; strong Python and FastAPI expertise; experience with PostgreSQL, Redis, GCP, and OpenAI/LLM integrations; architectural leadership and collaboration skills.
Python, FastAPI, PostgreSQL, Redis, OpenAI, GCP, Claude Code, Cursor, Copilot
1w
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Senior Python Engineer
New York City, New York, United States
RemoteFull Time
DeweyLearn
DeweyLearn: AI-powered platform providing insights for educational teaching and learning.
5+ YOE5+ years professional software engineering experience; expert Python and FastAPI; production API and PostgreSQL experience; Docker and CI/CD familiarity; experience with ML/AI systems; fluent English.
Python, FastAPI, PostgreSQL, Docker, CI/CD
2d
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Senior Software Engineer
New York, New York, United States
$137k-$180k/yr HybridFull Time
Socotec
Socotec: Provides testing, inspection, and certification services for building safety.
5+ YOE5+ years full-stack experience with React and Python (Django/FastAPI), REST APIs, relational databases, Docker, cloud (AWS/Azure), CI/CD; strong communication and interest in AI/ML.
React, Python, Django, FastAPI, Docker, AWS, Azure, GitHub Actions, OpenAI, Anthropic, LangGraph, LangChain, Pinecone, Weaviate, Databricks, Snowflake, Airbyte, n8n, Zapier, Temporal
3w
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Senior AI Engineer
Seattle or Cambridge or Princeton or Madison
$138k-$183k/yr OnsiteFull Time
Bristol Myers Squibb
Bristol Myers SquibbNYSE: BMY: Develops and manufactures innovative prescription biopharmaceutical medicines.
5+ YOEBachelor's degree,5+ years building and scaling cloud-native AI applications,proficiency in Python/FastAPI or TypeScript/Node,AWS experience,LLM/agent integration,CI/CD and infra-as-code knowledge.
AWS, Claude, LangSmith, Python, FastAPI, TypeScript, Node, LangGraph, Claude Agent SDK, LangChain, PydanticAI, Anthropic, OpenAI, Gemini, Grok, AWS Bedrock, Terraform, AWS CDK, CloudFormation, GitHub, Claude Code, Codex, Gemini CLI, Cursor, Windsurf, GitHub Copilot, LangSmith, promptfoo
3mo
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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
2mo
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Senior Platform Engineer
Atlanta or Boston or Chicago or Dallas or New York
HybridFull Time
Bain & Company
Bain & Company: Provides global management consulting and strategy advisory services.
6+ YOE6+ years backend platform engineering; Kubernetes, Python, Postgres, Kafka, Redis; security and AI tooling.
Python, FastAPI, Pydantic, SQLAlchemy, Alembic, PostgreSQL, Redis, Kafka, Docker, Kubernetes, OpenTelemetry, Prometheus, Helm, Vault, Azure Key Vault, Azure Monitor
3mo
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Senior Software Engineer
New York, New York, United States
$173k-$193k/yr HybridFull Time
Daloopa
Daloopa: Provides AI-powered financial data and automated modeling software.
5+ YOE5+ years engineering experience; strong Python and Django; production experience with LLMs and distributed systems; REST/GraphQL API design; strong communication and ownership.
Python, Django, FastAPI, LLMs, SQL, Redis, Celery, REST, GraphQL
1w
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Senior RAG Engineer
New York or Norway or Sweden or Ireland or United States
RemoteFull Time
Newcode.ai
Newcode.ai: Agentic AI platform for legal workflow automation.
5+ YOE5+ years building backend production systems with 2+ years shipping retrieval/RAG; strong Python and FastAPI; experience running vector indexes (Qdrant), embeddings, PostgreSQL/Redis, OCR-heavy ingestion and IR metrics.
Python, FastAPI, Qdrant, PostgreSQL, Redis
1mo
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Senior Fullstack Engineer
New York, New York, United States
$112k-$180k/yr HybridFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global communications, advertising, and digital transformation holding.
6+ YOE6+ years building internal/enterprise web apps; strong front-end (React, TypeScript, Next.js), backend Python with async frameworks (FastAPI), REST/JSON, and SQL; experience with job orchestration, long-running workflows, and cloud data platforms.
React, TypeScript, Next.js, Python, FastAPI, REST APIs, JSON, SQL, Databricks, AWS, Google Cloud, CI/CD, Genie
2mo
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Senior Research Engineer - Experimental Engineering
Yonkers or Washington or Colchester or Arizona or California or Connecticut or Illinois or Maryland or Massachusetts or Michigan or New Hampshire or New Jersey or New York or Texas or Vermont or Virginia or District of Columbia
$115k-$160k/yr RemoteFull Time
Consumer Reports
Consumer Reports: Tests products and publishes ratings for consumer advocacy.
Senior research engineer with deep full-stack software engineering experience, strong applied AI/ML knowledge, prototyping and R&D experience, Python/FastAPI and frontend (React/React Native) familiarity, and ability to lead experiments and mentor engineers.
AI, Machine Learning, Python, FastAPI, React, React Native, RAG
1mo
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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
2mo
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Senior AI Engineer
Zurich or Toronto or New York City or London or Berlin or Manila or Tokyo
HybridFull Time
RepRisk
RepRisk: Provides data-driven insights on reputational and ESG risks.
5+ YOE5+ years software engineering experience with 2–3 years building AI agents; experience with LangChain/LangGraph, Model Context Protocol (MCP)/FastMCP, Databricks or Snowflake, Python, FastAPI, Postgres, gRPC, AWS, and observability tools (LangSmith/LangFuse). Master's preferred; valid work permit required.
Model Context Protocol (MCP), FastMCP, Databricks, Snowflake, LangChain, LangGraph, LangSmith, LangFuse, Python, FastAPI, gRPC, Postgres, SQLAlchemy, AWS, AWS Bedrock, Bedrock AgentCore, Kubernetes, Claude Code, Cursor
1mo
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Backend Engineer (Senior/Staff)
New York City, New York, United States
$175k-$225k/yr RemoteFull Time
Taxwire
Taxwire: Automated global sales tax and compliance platform for businesses.
5+ YOE5–10+ years backend engineering experience; strong backend systems, data modeling, and compliance logic; proficiency with Python (FastAPI, Pydantic, pandas, duckdb), Postgres/SQL, and AWS; strong communication and ownership.
Python, FastAPI, Pydantic, pandas, duckdb, Postgres, SQL, AWS, LLMs, Playwright
2mo
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Senior AI Engineer
Plano or Purchase or Chicago
$111k-$185k/yr HybridFull Time
PepsiCo
PepsiCoNASDAQ: PEP: Global manufacturer and distributor of snacks and beverages.
8+ YOESenior AI Engineer with 8+ years in software lifecycle, ML/AI, and production-grade agent systems; strong Python/Java, distributed systems, and ML Ops experience.
Python, Java, FastAPI, asyncio, Pydantic, LangChain, LangGraph, CrewAI, MLflow, Arise, Docker, Kubernetes, Ray, Kafka, gRPC, Redis, Prometheus, OpenTelemetry, Grafana, Temporal, MEM0, Temporal Agentic Memory, Graph and Vector DBs
2mo
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Senior Software Engineer - Platform & Infrastructure
New York City, New York, United States
$160k-$200k/yr RemoteFull Time
ModernFi
ModernFi: Deposit management software platform for banks and credit unions.
5+ YOE5+ years software engineering experience with infrastructure, platform, or reliability focus; cloud (AWS), IaC (Pulumi/Terraform), modern CI/CD; strong security mindset; observability and SRE practices; collaborate with product teams.
AWS, Pulumi, PostgreSQL, ECS, Docker, Temporal, Python, FastAPI, SQLAlchemy, Datadog, PagerDuty, GitHub Actions, Auth0, Vanta, Fern
6d
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Senior AI Software Engineer
New Brunswick, New Jersey, United States
$102k-$137k/yr OnsiteFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
8+ YOE8+ years software engineering experience with 2+ years building production-grade AI/LLM applications; strong Python and FastAPI skills; experience with multi-agent orchestration, RAG, vector databases, semantic search, and integrating LLMs with enterprise systems.
LLMs, Retrieval-Augmented Generation (RAG), LangGraph, CrewAI, Semantic Kernel, Model Context Protocol (MCP), Python, FastAPI, Azure AI Document Intelligence, Azure, AWS, Google Cloud