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Senior Fastapi Developer Jobs in Stamford, CT (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 · 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 ...

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Revin AI

Senior Software Engineer

New York, NY · On-site

$200K - $275K/yr

Senior Software Engineer Location: New York, NY (on-site, 5 days a week) Compensation: $200,000 ... You'll work end-to-end across a Python/FastAPI backend, a Next.js/TypeScript dashboard, and the ...

Doctronic Inc

Senior Backend Engineer

New York, NY · On-site

$200K - $240K/yr

Senior Backend Engineer Doctronic | New York City ONSITE (Hybrid) | Reports to CEO The Mission Let ... Scalable APIs using Python, FastAPI, AWS handling millions of monthly requests * RESTful API ...

Atrix AI

Senior Backend Engineer (AI Focus)

New York, NY · On-site

$140K - $190K/yr

Who we are A small, senior team with roots at Google, a16z, Plaid, and Kickstarter. Seed stage ... Our FastAPI-based backend services, including REST APIs serving complex AI workflows * Database ...

MBR Partners

Senior Software Engineer

New York, NY · Remote

$150K/yr

With a back-end team in the Philippines, I'm currently hiring for a Senior Software Engineer ... FastAPI Experience with React, Redux (RTK), CSS modules Experience with CI/CD, Clouds (AWS/GCP ...

Hume AI

Senior Platform Engineer

New York, NY

$114K - $157K/yr

Hume AI is seeking a talented senior software engineer with strong experience in backend services ... GCP, AWS). * Experience in Kotlin/Spring, Typescript/Express, Python/FastAPI, or Rust. * Deep ...

Hume AI

Senior Platform Engineer

New York, NY · On-site

$180K - $230K/yr

Hume AI is seeking a talented senior software engineer with strong experience in backend services ... GCP, AWS). * Experience in Kotlin/Spring, Typescript/Express, Python/FastAPI, or Rust. * Deep ...

Ritchie Bros.

Senior Staff Software Engineer

Norwalk, CT · On-site

$155K - $194K/yr

The Sr. Staff Software Engineer will be part of the new Product Engineering team tasked with ... Architect and develop high-concurrency backend services in Python (FastAPI/Django) to handle core ...

Ritchie Bros.

Senior Staff Software Engineer

Norwalk, CT · On-site

$123K - $162K/yr

The Sr. Staff Software Engineer will be part of the new Product Engineering team tasked with ... Architect and develop high-concurrency backend services in Python (FastAPI/Django) to handle core ...

Chatham Financial

Senior Software Engineer

New York, NY · On-site

$100K - $140K/yr

Chatham Financial is looking for a Senior Software Engineer to join our Technology Engagements team ... Python (FastAPI or similar frameworks), JavaScript, TypeScript, React * Solid experience with SQL ...

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How much do senior fastapi developer jobs pay per hour?

As of Jul 4, 2026, the average hourly pay for senior fastapi developer in Stamford, CT is $65.82, according to ZipRecruiter salary data. Most workers in this role earn between $55.87 and $73.80 per hour, depending on experience, location, and employer.

What does a Senior FastAPI Developer do?

A Senior FastAPI Developer designs, develops, and maintains backend web applications using the FastAPI framework in Python. They are responsible for building scalable APIs, optimizing performance, ensuring security best practices, and integrating with databases and external services. Senior developers also mentor junior team members, contribute to architecture decisions, and collaborate closely with front-end engineers and stakeholders to deliver robust software solutions.

What are some common challenges faced by Senior FastAPI Developers when scaling applications, and how can these be addressed?

Senior FastAPI Developers often encounter challenges related to managing high concurrency, optimizing API performance, and ensuring robust security as applications scale. To address these, it’s important to implement asynchronous programming practices, leverage efficient database queries, and utilize API gateways for better traffic management. Collaboration with DevOps and QA teams is also essential to automate deployments and monitor system health, ensuring smooth scaling and reliable user experiences.

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

To thrive as a Senior FastAPI Developer, you need deep expertise in Python, RESTful API design, and experience building scalable web backends, typically supported by a degree in computer science or related field. Familiarity with FastAPI, Docker, cloud platforms (such as AWS or Azure), and CI/CD tools is highly valued, along with proficiency in testing frameworks. Strong problem-solving, leadership, and communication skills help you collaborate effectively with cross-functional teams and mentor junior developers. These skills enable the delivery of robust, efficient, and maintainable APIs that support business goals and high user demands.
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Senior Fastapi Developer jobs near you

Senior FastAPI Developer

Newcode.ai

New York, NY • On-site

$59.50 - $78.75/hr

Full-time

Posted 11 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