178 fastapi developer jobs at 121 companies in Holbrook, NY
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Software Engineer
Toronto or New York City
RemoteFull Time
1+ YOE1-4 years full-stack web development experience; proficiency with TypeScript, React, Python/FastAPI, Postgres, AWS; experience with APIs, state machines, and customer-facing iteration.
TypeScript, React, Python, FastAPI, Postgres, AWS
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
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
2mo
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Product Engineer
London or New York
HybridFull Time
4+ YOE4+ years software development; owned a subsystem end-to-end; strong Python; experience with AI/LLM workflows; translating customer ambiguity; self-motivated learner; familiar with Python, React/NextJS, FastAPI, MongoDB, Redis.
Python, React, NextJS, FastAPI, MongoDB, Redis
2w
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Forward Deployed Software Engineer
New York, New York, United States
$150k-$250k/yr OnsiteFull Time
Experienced software engineer with API and full-stack development skills, ability to work with data scientists, deploy Python/FastAPI services, and travel to customer sites; authorization for export-controlled technology may be required.
FastAPI, Python, Helm, Kubernetes, Terraform, AWS, Azure
2mo
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Sr Software Engineer
New York, New York, United States
HybridFull Time
5+ YOE5+ years Python/JavaScript/TypeScript; energy modeling; optimization; FastAPI; React; PostgreSQL; IoT protocols; SCADA experience.
Python, JavaScript, TypeScript, FastAPI, React, PostgreSQL, Pyomo, HiGHS, Gurobi, GLPK, MQTT, Sparkplug B, AWS IoT Core, Ignition, SCADA
2w
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Software Engineer
New York City, New York, United States
$140k-$180k/yr OnsiteFull Time
2+ YOE2+ years full-stack experience; production Python/FastAPI and TypeScript/Next.js; experience with LLMs, multi-tenant systems, API debugging, and integrating CRMs.
Python, FastAPI, TypeScript, Next.js, React Query, LangGraph, LangChain, Supabase, Postgres, Salesforce, ServiceTitan, LeadPerfection, AccuLynx, LiveKit, Daily.co, Twilio Voice, OpenAI Realtime, Langfuse, LangSmith, Helicone, RLS, JWT
2mo
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Software Engineer - Front Office Credit Technology
New York City, New York, United States
$175k-$250k/yr OnsiteFull Time
5+ YOE5–7 years software development experience; strong Python (pandas, NumPy); experience with FastAPI and APIs; end-to-end delivery experience; bachelor's in a quantitative field; strong communication and problem-solving skills.
Python, C++, Java, pandas, NumPy, FastAPI, AWS, S3, SQS, Batch, Lambda, Docker, Kubernetes
2w
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Software Engineer
New York, New York, United States
OnsiteFull Time
3+ YOE3+ years building production software; strong Python and/or TypeScript; experience with FastAPI, PostgreSQL, Next.js, Tailwind, APIs, and integrating external services; autonomy and ownership of end-to-end features.
FastAPI, PostgreSQL, Next.js, Tailwind, Figma, Stripe, Auth0, Canopy Connect, Python, TypeScript
2d
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Founding Engineer
New York City, New York, United States
$150k-$175k/yr OnsiteFull Time
Production software experience across the stack, Python/FastAPI, databases and data pipelines, AI agent systems, TypeScript/React, parsing and extraction, and cloud infrastructure. US work authorization required.
Python, FastAPI, TypeScript, React, PostgreSQL, Neon, MotherDuck, Turbopuffer, dbt, AWS, Cloudflare, DBOS
2mo
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Junior Software Developer
Sofia or Dresden or Singapore or New York City or Vermont
HybridFull Time
0+ YOEB.S. or M.S. in CS or related field, 0–2 years relevant experience, proficiency in Python (Pydantic, pytest, pandas, FastAPI, lark, sly, nicegui), Tcl/Bash shell scripting, Java, git and DevOps concepts; familiarity with Azure DevOps preferred.
Python, Pydantic, pytest, pandas, FastAPI, lark, sly, nicegui, Tcl, Bash, git, Java, Azure DevOps
2mo
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Senior Software Engineer
New York or Israel
HybridFull Time
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
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
6d
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Senior Software Engineer
New York, New York, United States
$137k-$180k/yr HybridFull Time
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
3mo
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Senior AI Engineer
New York, New York, United States
$120k-$165k/yr OnsiteFull Time
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
1mo
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Software Engineer - Pre-trade analytics, risk, portfolio optimization
New York City, New York, United States
$170k-$220k/yr HybridFull Time
5+ YOE5+ years building scalable services in Java (Spring) and/or Python (FastAPI, Pydantic, async); experience with PostgreSQL and Pandas/Polars; familiarity with AI-assisted workflows (Claude Code) and spec-driven development; strong system design and mentorship skills.
Java, Spring Framework, Python, FastAPI, Pydantic, PostgreSQL, Pandas, Polars, Claude Code, gRPC, Redis, Docker, Gradle, uv, AWS, Kubernetes
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
1mo
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Product Engineer
New York City, New York, United States
$150k-$300k/yr OnsiteFull Time
4+ YOE4+ years full‑stack software engineering experience; strong Python and FastAPI skills; frontend experience with React, TypeScript, Next.js, TailwindCSS; experience with AWS (ECS or Kubernetes), Postgres/PostgreSQL, S3, Redis; product sense and data/AI integration experience.
Python, FastAPI, React, TypeScript, Next.js, TailwindCSS, AWS, ECS, Kubernetes, Postgres, PostgreSQL, Redis, S3
1w
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Senior RAG Engineer
New York or Norway or Sweden or Ireland or United States
RemoteFull Time
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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Principal Engineer, CoCounsel
Eagan or Frisco or New York City or Toronto or Ann Arbor or San Francisco or Los Angeles or Irvine or McLean or Washington
$159k-$295k/yr HybridFull Time
Bachelor's degree (or equivalent) in CS or CE, deep Python and distributed systems experience, hands-on AI/LLM and agent experience, FastAPI/PostgreSQL/AWS familiarity, identity/IAM (SAML, OIDC, OAuth 2.0) expertise, strong communication.
Python, FastAPI, PostgreSQL, AWS, SSO, SAML, OIDC, OAuth 2.0, RBAC, ABAC, Anthropic, OpenAI, LLMs, MCP servers, vector databases, embeddings, semantic search
1mo
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Backend Engineer (Senior/Staff)
New York City, New York, United States
$175k-$225k/yr RemoteFull Time
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
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