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Senior Fastapi Jobs in Iselin, NJ (NOW HIRING)

Doctronic Inc

Senior Backend Engineer

New York, NY · On-site

$85K - $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 ...

Veris AI

Senior Backend Engineer

Manhattan, NY · On-site

They are seeking a Senior Backend Engineer to strengthen their engineering team by building the ... Responsibilities : • Design and code backend services in Python /FastAPI and data-store ...

Saransh Inc

Senior Python Web Developer - Only W2

Warren, NJ · On-site

$126K - $169K/yr

Senior Python Web Developer Location: Warren, NJ (Onsite - 3 days a week to biweekly, subject for ... Experience with modern Python web frameworks such as Flask, FastAPI, or Django. * Experience ...

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, Django), including async patterns and rate limiting. * Experience with vector databases, including:

Hume AI

Senior Platform Engineer

New York, NY · On-site

$180K - $230K/yr

Experience in Kotlin/Spring, Typescript/Express, Python/FastAPI, or Rust. * Deep understanding of modern deployment strategies utilizing cloud technologies (e.g. blue/green, canary deployments, etc)

Regard

Senior Data Engineer

New York, NY · Remote

$165K - $220K/yr

As a Senior Data Engineer at Regard, you will own the design, development, and production ... Data: S3, Apache Iceberg, EMR, PySpark, Dagster, Kubernetes, Clickhouse, PostgreSQL, FastAPI ...

Hume AI

Senior Platform Engineer

New York, NY · On-site

$114K - $157K/yr

Experience in Kotlin/Spring, Typescript/Express, Python/FastAPI, or Rust. * Deep understanding of modern deployment strategies utilizing cloud technologies (e.g. blue/green, canary deployments, etc)

Hume AI

Senior Platform Engineer

New York, NY · On-site

$180K - $230K/yr

Experience in Kotlin/Spring, Typescript/Express, Python/FastAPI, or Rust. * Deep understanding of modern deployment strategies utilizing cloud technologies (e.g. blue/green, canary deployments, etc)

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Senior Fastapi information

See Iselin, NJ salary details

$25.4K

$81.5K

$166K

How much do senior fastapi jobs pay per year?

As of Sep 6, 2026, the average yearly pay for senior fastapi in Iselin, NJ is $81,531.00, according to ZipRecruiter salary data. Most workers in this role earn between $42,100.00 and $104,600.00 per year, depending on experience, location, and employer.

What is the difference between Senior Fastapi vs Backend Developer?

AspectSenior FastapiBackend Developer
Primary FocusBuilding APIs with Fastapi frameworkDeveloping server-side logic across various frameworks
Required SkillsPython, Fastapi, async programming, REST API designPython, multiple frameworks (Django, Flask, Fastapi), database management
Work EnvironmentTech companies, startups, cloud-based projectsVaried industries, enterprise and startup environments
CertificationsPython certifications, Fastapi experiencePython certifications, general backend development certifications

Senior Fastapi specialists focus specifically on building high-performance APIs using the Fastapi framework, often requiring expertise in async programming and REST API design. Backend Developers have a broader scope, working across multiple frameworks and technologies to develop server-side logic. While both roles require Python skills, Senior Fastapi roles are more specialized, whereas Backend Developers have a wider range of tools and responsibilities.

What job categories do people searching Senior Fastapi jobs in Iselin, NJ look for?

The top searched job categories for Senior Fastapi jobs in Iselin, NJ are:

Senior Fastapi jobs near you

Sr. Engineer, AI Application Development

Weil, Gotshal & Manges LLP

New York, NY • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 11 days ago

Job description

Weil seeks the best and brightest talent to join our Administrative Staff team. Our employees are the future of Weil so we invest in their training and development. Our environment embraces and encourages positive-minded professionals who seek to be challenged and acquire knowledge and skills in an atmosphere built on teamwork. Highly skilled and knowledgeable Administrative Staff assist our attorneys in successfully meeting and exceeding client needs and are vital to the overall success of the Firm.
Job Description
The Sr. Engineer, AI Application Development is a hands-on technical role responsible for the design, development, and deployment of AI-integrated enterprise applications across the Firm. This position bridges traditional software engineering and modern AI capabilities, delivering intelligent, production-ready solutions within our Microsoft and Azure ecosystem. The Sr. Engineer will work closely with the Manager of AI Application Development and other team members to build, evaluate, and maintain AI-powered tools that support attorneys and legal professionals - translating complex AI capabilities into reliable, secure, and scalable applications that align with the Firm's governance and compliance requirements.Primary Responsibilities and/or Essential Functions:
AI Application Development
  • Design, develop, and maintain AI-integrated applications using modern development frameworks, primarily C#/.NET and Python, and including ASP.NET Core Web APIs, background services, and lightweight Flask/FastAPI services as appropriate.
  • Integrate large language model APIs (Anthropic, OpenAI, Google) leveraging structured outputs, tool/function calling, streaming responses, retry and fallback logic, and token/cost management.
  • Build clean, functional front-end interfaces for internal tools using React or Vue, ensuring usability for non-technical users such as attorneys and legal professionals.
  • Implement telemetry, usage tracking, and user feedback instrumentation to support monitoring, adoption measurement, and iterative improvement of AI features.

Azure & Cloud Infrastructure
  • Maintain and enhance CI/CD pipelines using Azure DevOps, following source control best practices with Git.
  • Configure and manage Azure SQL and SQL Server databases to support application data needs, including schema design and query optimization.

Security, Governance & Handoff Discipline
  • Implement authentication and authorization patterns aligned with firm standards, including Windows Authentication and Azure Active Directory / Entra ID integration.
  • Apply secure secrets management practices, audit logging, and appropriate handling of sensitive firm and client data throughout the development lifecycle.
  • Produce clear API specifications, data schemas, and deployment guides to support smooth handoffs and long-term maintainability.
  • Evaluate AI prototypes built by others for security, scalability, and supportability prior to productionalization into enterprise environments.

Collaboration & Communication
  • Partner with the AI Development Manager to align technical work with team priorities and firm objectives.
  • Work directly with other internal AI teams team to understand workflow needs, gather requirements, and communicate technical concepts accessibly/clearly.
  • Participate in architecture reviews, code reviews, and sprint planning as an active and constructive contributor.
  • Maintain documentation of AI integrations, system behaviors, and configuration decisions to support team knowledge sharing.

Knowledge, Skills and Ability:
  • 5+ years of software development experience, with demonstrated proficiency in C#/.NET (ASP.NET Core, Web API, background services) and comfort working in Python (Flask or FastAPI).
  • Hands-on experience integrating LLM APIs from providers such as Anthropic, OpenAI, Google, et. al., including structured outputs, function/tool calling, streaming, and cost management.
  • Experience building functional front-end interfaces using React or Vue for internal tooling or business applications.
  • Solid working knowledge of SQL Server and/or Azure SQL, including data modeling, query writing, and integration with .NET applications.
  • Working knowledge of authentication and security patterns in Azure environments, including managed identity and secrets management.
  • Experience deploying and managing AI applications on Azure, leveraging App Service, etc., as appropriate to the workload.
  • Familiarity with Azure AI Services (e.g., Cognitive Services, Azure AI Foundry) to accelerate development of intelligent features.
  • Strong written and verbal communication skills; ability to work effectively alongside non-technical stakeholders, including attorneys and other legal professionals.
  • A pragmatic, security-conscious mindset with experience handling sensitive or regulated data.
  • Ability to take ownership of a feature from design through deployment and ongoing support.
  • Comfort working in an enterprise environment with governance, compliance, and change management requirements.

Preferred Qualifications:
Advanced AI Capabilities
  • Experience building a multi-model abstraction or routing layer that spans providers such as Anthropic, OpenAI, and Google, including fallback logic, model selection criteria, and cost controls.
  • Practical experience with an agent orchestration framework such as Anthropic Agent SDK, LangGraph, Semantic Kernel, or LangChain, including designing multi-step agentic workflows.
  • Hands-on experience with retrieval-augmented generation (RAG), including document parsing and chunking strategies, embedding pipelines, hybrid keyword/vector search, and integration with Azure AI Search or comparable infrastructure.
  • Experience developing or consuming Model Context Protocol (MCP) servers and clients, enabling internal tools and data sources to be exposed as standard, reusable capabilities for agent frameworks and model platforms.

Legal & Enterprise Context
  • Familiarity with legal industry workflows, document management systems, or information governance practices in a law firm or similarly regulated environment.
  • Experience with Microsoft 365 ecosystem integrations, including Microsoft Graph API, Exchange, SharePoint, or Office Add-ins.

Education/Certifications:
  • Bachelor's degree preferred.

Estimated salary range is $170,000 - $190,000. This position is bonus eligible. Compensation decisions within the range are dependent on the facts and circumstances of each case including but not limited to the individual's skills, experience, and qualifications.
Weil, Gotshal & Manges LLP offers a competitive compensation package comprised of base pay and discretionary year-end bonus for eligible employees. Benefits include, but are not limited to medical, dental, vision, disability coverage, life insurance, flexible spending plan and a 401K plan. Weil also offers generous paid time off and holidays. All decisions affecting employment at Weil, Gotshal & Manges LLP are made on the basis of qualification, performance and other pertinent work-related factors, and without discrimination against any person on the basis of race, color, sex, age, religion, national origin, disability, marital status, sexual orientation, gender identity or expression, pregnancy, veteran's status, genetic information or any other legally protected status.

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