285 fastapi developer jobs at 149 companies in Parsippany, NJ
4w
Save
Mark Applied
Hide
Senior Full-Stack Developer (React + Python/FastAPI)
Jersey City or Dallas or Tampa
$75k-$150k/yr HybridFull Time
6+ YOE7+ years full-stack experience with React, Python/FastAPI, SQL, Docker, and cloud; strong design, performance, security, and mentoring skills.
React, Python, FastAPI, SQL, Snowflake, Docker, Nginx, AWS EC2
2w
Save
Mark Applied
Hide
Senior Developer
Hyderabad or New York City
OnsiteFull Time
5+ YOE5+ years in software development and 2+ years in GenAI or NLP; proficiency in Python, FastAPI, asyncio, Hugging Face, OpenAI APIs, LangChain, vector databases, and MLflow.
LangChain, Pinecone, Weaviate, MLflow, Docker, Kubernetes, Python, FastAPI, asyncio, Hugging Face, OpenAI APIs, ChatGPT, GitHub Copilot, Microsoft Teams, CI/CD, RAG
1mo
Save
Mark Applied
Hide
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
3w
Save
Mark Applied
Hide
GEN AI Engineer
Jersey City, New Jersey, United States
$90k-$120k/yr OnsiteFull Time
2+ YOEHands-on Python and API development (FastAPI/Flask), experience with LLMs, prompt engineering, RAG/agentic architectures, LangChain/Hugging Face/Llama Index, and model deployment.
Python, FastAPI, Flask, LangChain, Hugging Face, Llama Index, Gemini, PyTorch, TensorFlow, Keras, Docker, Git
1w
Save
Mark Applied
Hide
AI Research Engineer
New York, New York, United States
$180k-$300k/yr OnsiteFull Time
5+ YOERequires 5+ years of software engineering experience, backend development, experimentation, Python, FastAPI, AWS, ECS or Kubernetes, Postgres, S3, and observability tools.
Python, FastAPI, AWS, ECS, Kubernetes, Postgres, S3
3mo
Save
Mark Applied
Hide
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
1mo
Save
Mark Applied
Hide
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
1w
Save
Mark Applied
Hide
Senior Forward Deployment Engineer
New York City or San Francisco or Princeton
RemoteFull Time
9+ YOERequires 9+ years of software engineering experience, expertise in full-stack development, data architecture, React, JavaScript/TypeScript, Python, FastAPI, PostgreSQL, Redis, PySpark, AWS, and technical leadership.
React, JavaScript, TypeScript, Python, FastAPI, PostgreSQL, RDS, Aurora, Redis, PySpark, Kestra, AWS, EKS, Kubernetes, GitHub Copilot, Cursor, LLM
3mo
Save
Mark Applied
Hide
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
1w
Save
Mark Applied
Hide
Senior Python/GenAI Engineer
New York City or Hanover
$105k-$115k/yr OnsiteFull Time
Hands-on Python and GenAI development, MCP, LLM orchestration, RAG, FastAPI, REST APIs, async programming, Git, CI/CD, cloud deployment, security, distributed-system debugging, and regulated technology experience.
Python, MCP, LangChain, LangGraph, FastAPI, REST APIs, Git, CI/CD, AWS
1mo
Save
Mark Applied
Hide
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
1mo
Save
Mark Applied
Hide
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
3d
Save
Mark Applied
Hide
Senior Python Engineer
New York City, New York, United States
RemoteFull Time
5+ YOERequires 5+ years of professional software engineering experience, strong Python, FastAPI, PostgreSQL, Docker, production ML/AI systems, and fluent English proficiency.
Python, FastAPI, PostgreSQL, Docker, RAG, CI/CD
2mo
Save
Mark Applied
Hide
Senior Python Engineer - Applications Development Sr Programmer Analyst - C12 - RUTHERFORD
Rutherford, New Jersey, United States
$121k-$182k/yr HybridFull Time
8+ YOE8+ years application development, 5+ years Python/PySpark leadership; design and build scalable data pipelines, AI agent deployment, Databricks, Kafka, FastAPI, microservices, data mesh, SQL, and cloud platforms.
Python, FAST API, Microservices, PySpark, pyspark, Kafka, Databricks, Google ADK, Google Flash 2.5+ LLMs, Devin.AI, Github Copilot, MCP, YAML, JSON, Spring boot, Starburst, Cloudera, AWS, Azure, GCP, Angular, React JS, Docker, openshift, Kubernates, CI/CD, SQL
2d
Save
Mark Applied
Hide
Founding Engineer
New York City, New York, United States
$156k-$182k/yr OnsiteFull Time
2+ YOERequires 2+ years building production systems, production agentic AI or LLM applications, Python/FastAPI, TypeScript, React, ETL, SQL, PostgreSQL, AWS, observability, distributed systems, and US citizenship.
Python, FastAPI, TypeScript, React, ETL, SQL, PostgreSQL, AWS, dbt, Cloudflare
2mo
Save
Mark Applied
Hide
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
2w
Save
Mark Applied
Hide
Software Engineer II
New York City, New York, United States
$120k-$160k/yr HybridFull Time
3+ YOERequires 3+ years of software engineering experience, full-stack capability, TypeScript, React, Python, FastAPI, databases, APIs, testing, AWS, Docker, and cloud application deployment experience.
React, Next.js, TypeScript, Python, FastAPI, AWS, Docker, Claude Code, Cursor, OpenCode, LLMs, RAG
1mo
Save
Mark Applied
Hide
Full-Stack Engineer III (Contract to Hire)
Mount Arlington, New Jersey, United States
OnsiteContract, Full Time
7+ YOE7+ years full-stack engineering experience; expertise in React, Python/FastAPI, PostgreSQL; SSO/OIDC/Auth0 and third-party integrations; AI-assisted development and security-by-design; BS in Computer Science.
React, Python, FastAPI, PostgreSQL, Auth0, Veeva, SSO, OIDC
1mo
Save
Mark Applied
Hide
AI Software Developer
New Brunswick, New Jersey, United States
$102k-$137k/yr OnsiteFull Time
5+ YOE5+ years software engineering experience with 3+ years building production-grade AI/LLM applications; strong Python and FastAPI skills; experience with RAG, vector databases, semantic search, multi-agent frameworks, and enterprise integrations.
LangGraph, CrewAI, Semantic Kernel, Model Context Protocol (MCP), Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), vector database, semantic search, Python, FastAPI, Azure AI Document Intelligence, Azure, AWS, Google Cloud, MLOps
1d
Save
Mark Applied
Hide
Senior Fullstack Engineer
New York City, New York, United States
HybridFull Time
7+ YOE7+ years of software engineering experience with strong frontend focus; deep React and TypeScript expertise; Python/FastAPI backend experience; TanStack Router and Query experience; strong product judgment.
React, TypeScript, Python, FastAPI, TanStack Router, TanStack Query, Django, Zod
Explore Jobs