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Fastapi Developer Jobs in Irvington, NJ (NOW HIRING)

Newcode.ai

Senior FastAPI Developer

New York, NY · On-site

$59.50 - $78.75/hr

FastAPI: 3+ years * PostgreSQL / SQL * Redis: 2+ years Nice to have: RAG or vector search experience; LangChain or LlamaIndex; streaming over SSE, WebSocket or SignalR; Microsoft Graph and email ...

Newcode.ai

Senior FastAPI Developer

New York, NY · On-site

$59.50 - $78.75/hr

FastAPI: 3+ years * PostgreSQL / SQL * Redis: 2+ years Nice to have: RAG or vector search experience; LangChain or LlamaIndex; streaming over SSE, WebSocket or SignalR; Microsoft Graph and email ...

Newcode.ai

Senior FastAPI Developer

New York, NY

$59.50 - $78.75/hr

FastAPI: 3+ years * PostgreSQL / SQL * Redis: 2+ years Nice to have: RAG or vector search experience; LangChain or LlamaIndex; streaming over SSE, WebSocket or SignalR; Microsoft Graph and email ...

Winaxis

Lead Python Developer

New York, NY · On-site

$153K - $188K/yr

Lead Python Developer - Lead the design, development, and deployment of enterprise-grade applications, primarily in the finance sector. - Utilize expertise in Python, PySpark, FastAPI, Pandas, Polars ...

Sarian, Inc.

Python Developer

Jersey City, NJ · On-site

$52.50 - $72.25/hr

Core Python, Flask, GraphQL, FASTAPI, React, MUI, Next.JS, Remix, Tailwind, Microservices, Linux, PostgreSQL & Podman Roles & Responsibilities * Understand Client Requirement & Translate in ...

Man Group

Senior Quant Developer

New York, NY · Remote

$59.50 - $78.75/hr

Backend: FastAPI, Flask * Frontend: React, Streamlit dashboards, Tableau * Infrastructure ... Collaborate with London and Sofia-based engineers on cross-team initiatives Stakeholder Engagement ...

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How much do fastapi developer jobs pay per hour?

As of Jun 12, 2026, the average hourly pay for fastapi developer in Irvington, NJ is $53.90, according to ZipRecruiter salary data. Most workers in this role earn between $41.20 and $65.96 per hour, depending on experience, location, and employer.

What are some common challenges FastAPI Developers face when integrating third-party services or APIs?

FastAPI Developers often encounter challenges when integrating third-party services, such as handling authentication protocols (like OAuth2), ensuring compatibility between JSON schemas, and managing asynchronous calls to avoid performance bottlenecks. It’s also common to troubleshoot and adapt to inconsistencies in external API documentation or rate limits. Collaborating closely with frontend teams and DevOps professionals helps streamline these integrations, ensuring robust, scalable API solutions.

What is the difference between Fastapi Developer vs Backend Developer?

AspectFastapi DeveloperBackend Developer
Required SkillsPython, Fastapi, REST APIs, async programmingMultiple languages (Python, Java, Node.js), REST/SOAP APIs, databases
Work EnvironmentWeb development, API-focused projects, microservicesBroader software development, server-side logic, database management
Industry UsageTech startups, SaaS, API-driven servicesEnterprise, e-commerce, finance, various industries

Fastapi Developers specialize in building high-performance APIs using Python and Fastapi, often within microservices architectures. Backend Developers have a broader scope, working with multiple languages and technologies to develop server-side applications across various industries. While Fastapi Developers focus on API efficiency, Backend Developers handle comprehensive backend systems.

What are the key skills and qualifications needed to thrive as a FastAPI Developer, and why are they important?

To thrive as a FastAPI Developer, you need strong proficiency in Python programming, RESTful API design, and experience with FastAPI, often supported by a background in computer science or related fields. Familiarity with tools like SQL/NoSQL databases, Docker, and cloud platforms, as well as knowledge of asynchronous programming and API documentation tools like Swagger, is typically required. Excellent problem-solving skills, attention to detail, and effective communication set outstanding FastAPI developers apart. These skills are crucial for building reliable, high-performance APIs that meet modern application demands and facilitate seamless team collaboration.

What is a FastAPI Developer?

A FastAPI Developer is a software engineer who specializes in building web applications and APIs using the FastAPI framework, which is a modern, fast (high-performance) web framework for Python. FastAPI Developers are responsible for designing, developing, and maintaining backend services and APIs that are efficient, robust, and scalable. They often work with databases, authentication, and deployment processes, and ensure that the API endpoints adhere to best practices for security and performance. Their work is crucial for enabling smooth communication between front-end applications and backend systems.
What job categories do people searching Fastapi Developer jobs in Irvington, NJ look for? The top searched job categories for Fastapi Developer jobs in Irvington, NJ are:
What cities near Irvington, NJ are hiring for Fastapi Developer jobs? Cities near Irvington, NJ with the most Fastapi Developer job openings:
Fastapi Developer jobs near you

Senior FastAPI Developer

Newcode.ai

New York, NY • On-site

$59.50 - $78.75/hr

Full-time

Posted 19 days ago

Job description

Who are we?
We build AI tools for firms in legal and professional services: software people use for real work, not demos. We started a few months ago and already have paying clients who rely on what we ship. The team is small and moving fast.
The role
You'll own the backend behind our AI features. That's the APIs, the data pipelines, and the orchestration sitting between our product and the language models doing the work. In practice it means running retrieval over large sets of documents, getting dependable results out of LLMs and their tool calls, streaming responses to the UI, and processing long jobs in the background without things falling over.
It isn't CRUD work. The hard parts here are keeping AI systems accurate and fast with confidential data, at production scale. You'll make architecture calls early and live with them.
Requirements
What You'll Do
  • Designing and building the APIs and services our products run on.
  • Working on the AI plumbing: retrieval, orchestration, tool-calling, response streaming, and the evals that tell us whether the output is any good.
  • Keeping async and distributed work reliable: document ingestion, embeddings, and long-running jobs on Redis.
  • Building integrations with the systems clients already use, like email and document stores, and making them hold up under load.
  • Taking data security and isolation seriously, since clients hand us confidential material.

Who You Are
  • At least seven years building backend systems that run in production. Depth matters more to us than the number.
  • You think about how things fail, not just how they behave when everything's fine.
  • You've built real LLM-powered systems, or you're itching to: RAG, tool-calling, agents. You know where they tend to break.
  • You use AI coding tools (Claude Code, Cursor, Copilot) and use them well. Faster output, but you understand and stand behind every line; you wouldn't approve sloppy AI-written code in review, so you don't ship it either.
  • You're fine in a startup that changes direction. Decisions get made, then revisited.

Experience we expect with the stack:
  • Python: 6+ years
  • FastAPI: 3+ years
  • PostgreSQL / SQL
  • Redis: 2+ years

Nice to have: RAG or vector search experience; LangChain or LlamaIndex; streaming over SSE, WebSocket or SignalR; Microsoft Graph and email integration work.
Benefits
Why Join Us?
  • Be a driver of innovation in one of Oslo's most exciting AI ventures
  • Work with talented peers in a collaborative, high-energy team
  • Shape both product and culture as we grow
  • Flexible, English-speaking environment

Apply