49 python backend developer jobs at 36 companies in Cornwall, NY
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Backend Engineer
New York, New York, United States
$110k-$140k/yr HybridFull Time
Bachelor's degree in Computer Science or equivalent experience; strong backend development skills in .NET and Python; experience with databases and CI/CD.
NET (C#, EF Core, ASP.NET Core), Python (FastAPI, Pydantic, SQLAlchemy), SQL Server, Snowflake, Redis, Bitbucket, Jenkins, Docker, Kubernetes, VS Code
2mo
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Principal Backend Engineer
New York, New York, United States
$135k-$217k/yr HybridFull Time
10+ YOE10+ years backend/data platform experience; Python, API design, AWS serverless; Databricks/PySpark; multi-tenant SaaS and data contracts; leadership without formal management.
Python, SQL, Databricks, PySpark, AWS serverless, Lambda, API Gateway, S3, DynamoDB, IAM, CloudFormation, SAM, MCP, CLI/API, MCP integrations, Orchestration
1mo
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AVP, Back End Engineer
Whippany, New Jersey, United States
$146k-$175k/yr OnsiteFull Time
Experience building backend services with relational/NoSQL databases, server-side languages and frameworks, cloud and container platforms, secure coding, and automated testing; leadership or team lead experience preferred.
Postgres, Oracle, MongoDB, DynamoDB, Java, Spring Boot, Python, Django, C#, C++, .Net, Nodejs, Go, REST, GraphQL, Docker, AWS, Azure, Open Shift
1w
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Backend Software Engineer - Assistant Vice President
Greenwich or New York City
$130k-$170k/yr HybridFull Time
6+ YOEDegree in software engineering,6+ years web application development,experience with Python/Scala/Node.js,knowledge of relational/NoSQL modeling,testing and SSO familiarity.
Scala, Ruby, Node.js, Python, FastAPI, ZIO, Scala Test, ZIO Test, PyTest
1w
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Backend Engineer_AI Gateway
Englewood Cliffs or Plano
$11k/mo OnsiteContract
Deep expertise in async Python and network programming, cloud infrastructure, container orchestration, streaming data, security gateways, IAM/SSO, observability, and CI/CD.
asyncio, aiohttp, anyio, WebSocket, SSE, TLS, HTTP/2, HTTP/3, gRPC, FastAPI, Pydantic, Docker, AKS, EKS, GKE, Istio, Envoy, Redis Streams, RabbitMQ, Kafka, PostgreSQL, PgBouncer, HashiCorp Vault, NGINX, Terraform, GitHub Actions, GitLab CI, CASB, DLP, WSS, Azure AD, Entra ID, Okta, SAML 2.0, OIDC, SCIM, Azure OpenAI, Datadog, Prometheus, Grafana, Azure Monitor
1mo
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Senior Software Engineer - Backend
New York or Manhattan or London
$165k-$180k/yr HybridFull Time
3+ YOE3+ years software development experience, strong Java (Spring Boot) and/or Python (FastAPI) skills, SQL experience, cloud (AWS) familiarity, REST API and distributed systems experience, testing and CI/CD knowledge, bachelors preferred.
Java, Spring Boot, Python, FastAPI, SQL, PL/SQL, AWS, Kubernetes, EKS, Docker, Kafka, Redis, MongoDB, GitHub Actions, GitHub Copilot, Amazon Q, LangChain, LlamaIndex, MCP, A2A
1w
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Software Engineer, Backend, Level 4
Los Angeles or New York City or Bellevue or Seattle or San Francisco or Palo Alto or Santa Monica
$133k-$235k/yr OnsiteFull Time
2+ YOEBachelor's in a technical field or equivalent experience,2+ years post-Bachelor’s software development experience,experience with distributed systems,operational skills,collaboration and strong CS fundamentals.
Java, C++, Python, NoSQL, Memcache, Redis, Kubernetes, Google services, AWS services
1mo
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Lead Software Engineer - Back End Java or Python
New York or United States
$152k-$215k/yr OnsiteFull Time
5+ YOE5+ years applied software engineering experience; recent back-end Java experience; cloud, distributed systems, RESTful APIs, SQL/NoSQL, messaging frameworks; test design; experience with AI-assisted development practices and responsible AI.
Java, Python, SQL, NoSQL, RESTful APIs
1w
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Software Engineer – Backend Platforms, Assistant Vice President (Wealth Custody & Clearing)
Boston or Princeton or Austin or Quincy or Clifton
$90k-$158k/yr HybridFull Time
7+ YOE7+ years software engineering experience building backend services, APIs, distributed systems and cloud-native applications; strong engineering fundamentals; Bachelor's preferred; experience with Java/Kotlin/Python/TypeScript; Agile and production support experience.
Java, Kotlin, Python, JavaScript, TypeScript, RESTful APIs, microservices, CI/CD, DevOps, Docker, Kubernetes
1w
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Software Engineer – Backend Platforms, Assistant Vice President (Wealth Custody & Clearing)
Boston or Princeton or Austin or Quincy or Clifton
$90k-$158k/yr HybridFull Time
7+ YOE7+ years software engineering experience; bachelor's preferred; expertise in backend development, APIs, microservices, cloud, CI/CD, Docker/Kubernetes, and enterprise delivery; strong communication and problem solving.
Java, Kotlin, Python, JavaScript, TypeScript, RESTful APIs, Docker, Kubernetes, CI/CD pipelines
2mo
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Lead Software Engineer (Python, LLM) - AskGartner
Irving or Stamford
$116k-$170k/yr HybridFull Time
Expert-level Python; backend services; FastAPI; AWS/Azure; SageMaker Pipelines; Pytest; PostgreSQL; Pandas; Git.
Python, Python FastAPI, AWS, Azure, AWS SageMaker Pipelines, pytest, Git, PostgreSQL, Parquet, JSON, CSV, Pandas, LangGraph, LangChain, OpenAI, Anthropic, Google, Locust, JMeter, AWS Athena, AWS S3, IAM, Splunk, AWS Secrets Manager, PySpark, Docker, Kubernetes, Terraform, OpenSearch, RAG systems, Cache technologies
6d
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Lead Developer
Teaneck, New Jersey, United States
HybridFull Time
10+ YOE10+ years professional software development experience with extensive focus on Python3 for backend/service applications; experience designing scalable architectures, testing, performance tuning, hybrid teams, and mentoring developers.
Python3
1mo
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Software Engineer
New York City or Englewood Cliffs
$120k-$150k/yr HybridFull Time
3+ YOE3+ years software development; backend (Java, Node.js, Python, Go), frontend (JavaScript/TypeScript, React/Vue/Angular), microservices and REST APIs, cloud (AWS/Azure), Git and CI/CD experience.
Java, Node.js, Python, Go, JavaScript, TypeScript, HTML, CSS, React, Vue, Angular, AWS, Azure, Git, GitHub Actions, Jenkins, Terraform, CloudFormation, Datadog, Prometheus, ELK
2d
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VP, Quant Developer - Risk Analytics
New York City or Jersey City
$175k-$200k/yr OnsiteFull Time
5+ YOE5+ years of Python backend development for financial applications, agentic workflow and AI validation experience, full-system architecture expertise, and strong market and credit risk knowledge.
Python, Claude Code, Docker, Kubernetes, Azure, AWS, CI/CD, Graphical User Interface (GUI)
1mo
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Software Engineer
New York, New York, United States
OnsiteFull Time
2+ YOE2+ years backend development with Python and Java/Spring; knowledge of equities; SQL proficiency; exposure to Angular; REST API, Git, CI/CD, Spring Boot/Cloud, microservices, caching (Gemfire/Redis), Solace, cloud (AWS/Azure/Google Cloud), Docker/Kubernetes.
Python, Java, Spring Boot, Spring Cloud, SQL, Angular, Git, Pivotal Cloud Cache (Gemfire), Redis, Solace, AWS, Azure, Google Cloud, Docker, Kubernetes
1w
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Principal Engineer
Bloomfield, New Jersey, United States
OnsiteFull Time
10+ YOE10+ years experience; expert React and TypeScript frontend; backend experience in Go, Python or TypeScript; cloud (GCP or AWS) and Terraform architecture; Docker, Kubernetes, CI/CD; observability (Prometheus, Grafana, Jaeger); systems design and mentorship.
React, TypeScript, Go, Python, GCP, AWS, Terraform, Docker, Kubernetes, GitHub Actions, GitLab CI, Prometheus, Grafana, Jaeger
1mo
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Senior Software Engineer
United States or White Plains
$170k-$200k/yr OnsiteFull Time
5+ YOE5+ years engineering experience, strong backend ownership, product judgment, experience with Python, PostgreSQL, AWS, CI/CD, and building reliable scalable systems.
Python, PostgreSQL, AWS
1mo
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Full-Stack Engineer
New York, New York, United States
$140k-$180k/yr HybridFull Time
2+ YOE2+ years software engineering experience, bachelor’s in CS/Data Science, production application development, strong Python backend skills, front-end framework experience (e.g., React), API and SQL experience, cloud deployment (Microsoft Azure), regulated environment and ML production experience.
Python, React, SQL, Microsoft Azure
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
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 Software Engineer, Air AI
Mountain View or Los Angeles or San Francisco or New York City
$170k-$230k/yr HybridFull Time
4+ YOE4+ years software engineering; strong fullstack Python backend and TypeScript/React frontend; Docker and Kubernetes; experience with LLM APIs; production AI features; able to ship quickly.
Python, TypeScript, React, Docker, Kubernetes
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