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Senior Fastapi Developer Jobs in Iselin, NJ (NOW HIRING)

Headstart AI

Senior Software Engineer

Manhattan, NY · On-site

$134K - $177K/yr

... Python, FastAPI, Node.js), relational databases (Postgres/MySQL), and optionally frontend ... developer productivity infrastructure at scale Preferred : • Bonus if you've been a founding ...

Citigroup, Inc.

Senior Generative AI Developer

New York, NY · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

About the Role We are looking for a Senior Generative AI Developer to join our COO Technology ... Expert-level Python proficiency - including async programming, API development (FastAPI, Flask ...

Doctronic Inc

Senior Backend Engineer

New York, NY · On-site

$85K - $240K/yr

  • Medical

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 ...

Virtusa Corporation

Senior Consultant

Jersey City, NJ · On-site

We are seeking an experienced Senior Python Engineer to design, build, and maintain scalable, high ... programming • Experience with at least one major Python web framework (Django, Flask, or FastAPI ...

Virtusa Corporation

Senior Consultant

Jersey City, NJ · On-site

We are seeking an experienced Senior Python Engineer to design, build, and maintain scalable, high ... programming • Experience with at least one major Python web framework (Django, Flask, or FastAPI ...

Veris AI

Senior Backend Engineer

Manhattan, NY · On-site

Responsibilities : • Design and code backend services in Python /FastAPI and data-store ... cloud and DevOps tasks: IaC, container builds, monitoring, and cost tuning. • Collaborate with ...

ZS

Senior AI Engineer

Princeton, NJ · On-site

$110K - $151K/yr

Experience in backend API design using FastAPI or similar asynchronous frameworks (e.g., Flask ... Azure DevOps pipelines or GitHub Actions * Kubernetes (nice to have) * Data security practices ...

ZS Associates

Senior AI Engineer

Princeton, NJ · On-site

$128K - $169K/yr

Experience in backend API design using FastAPI or similar asynchronous frameworks (e.g., Flask ... Azure DevOps pipelines or GitHub Actions * Kubernetes (nice to have) * Data security practices ...

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Senior Fastapi Developer information

See Iselin, NJ salary details

$15

$62

$89

How much do senior fastapi developer jobs pay per hour?

As of Aug 17, 2026, the average hourly pay for senior fastapi developer in Iselin, NJ is $62.69, according to ZipRecruiter salary data. Most workers in this role earn between $53.22 and $70.29 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 the key skills and qualifications needed to thrive as a Senior FastAPI Developer?

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.

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 cities near Iselin, NJ are hiring for Senior Fastapi Developer jobs?

Cities near Iselin, NJ with the most Senior Fastapi Developer job openings:

Senior Fastapi Developer jobs near you
Infographic showing various Senior Fastapi Developer job openings in Iselin, NJ as of August 2026, with employment types broken down into 79% Full Time, 3% Part Time, and 18% Contract. Highlights an 81% Physical, 4% Hybrid, and 15% Remote job distribution, with an average salary of $130,389 per year, or $62.7 per hour.

Senior AI Software Engineer | AI Agents | Python | F2F Interview in NJ - W2 Role

TMS LLC

Jersey City, NJ

$126K - $170K/yr

Full-time

Posted 8 days ago

Job description

Job Description

Role: Senior AI Software Engineer (Agentic AI / AI Agents)
Location: Hybrid
Duration: 12+ Months

Interview: In-Person

Job Summary

We are seeking a hands-on Senior AI Software Engineer with strong experience in designing, building, and deploying production-grade Agentic AI systems. The ideal candidate should have expertise in developing AI Agents capable of multi-step reasoning, tool orchestration, Retrieval-Augmented Generation (RAG), and secure enterprise AI solutions.

This is NOT a traditional Java/.NET Full Stack or chatbot integration role. We are specifically looking for engineers with real-world production experience building AI Agents using Python and modern Agentic AI frameworks.

Required Skills

  • 5–10+ years of Software Engineering experience.
  • Strong hands-on experience with Python and backend development (FastAPI preferred).
  • Experience building and deploying production AI Agents / Agentic AI applications.
  • Strong experience with LangGraph, LangChain, CrewAI, AutoGen or similar AI Agent frameworks.
  • Hands-on experience with:
    • Retrieval-Augmented Generation (RAG)
    • AI Agent Architecture
    • Multi-Agent Systems
    • Tool Calling / Function Calling
    • Agent Memory
    • Prompt Engineering
    • Embeddings
  • Experience with Vector Databases such as Pinecone, FAISS, Weaviate, ChromaDB, or Azure AI Search.
  • Experience deploying LLM applications using OpenAI, Azure OpenAI, AWS Bedrock, Anthropic Claude, Google Vertex AI, or Llama models.
  • Strong experience with Docker, Kubernetes, CI/CD, LLMOps, Monitoring & Observability.
  • Experience working on AWS, Azure, or GCP.
  • Strong understanding of AI Security, Guardrails, Prompt Injection Protection, PII Handling, RBAC, and Responsible AI.

Responsibilities

  • Design and develop enterprise-scale Agentic AI solutions.
  • Build AI Agents capable of planning, reasoning, tool usage, and multi-step task execution.
  • Develop reusable AI Agent frameworks, SDKs, and RAG pipelines.
  • Build secure AI services with proper guardrails, approval workflows, retries, and fault tolerance.
  • Implement production LLMOps, monitoring, evaluation, observability, and performance optimization.
  • Collaborate with Product Managers, Data Scientists, and Engineering teams to deliver scalable AI platforms.

Preferred Experience

  • LangGraph
  • MCP (Model Context Protocol)
  • AI Agent Evaluation Frameworks
  • Healthcare, Banking, Insurance, or other regulated industry experience
Additional Information

All your information will be kept confidential according to EEO guidelines.