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Fastapi Developer Jobs in Boston, MA (NOW HIRING)

Klaviyo

Senior AI Engineer - Customer Agent

Boston, MA · On-site

$113K - $155K/yr

They are seeking a Senior AI Engineer on the Customer Agent team to design and build scalable ... FastAPI, Django preferred). • Experience creating human and automated evals to ensure high AI ...

The Hollister Group

UI Engineer (React/Python)

Boston, MA · On-site

$113K - $151K/yr

Strong backend engineering skills using Python, Ray, FastAPI, and Pandas/Polars, including API design, distributed parallel computing, and experience with both relational and non-relational databases.

Infosys Limited Digital

Python Full Stack Developer

Boston, MA · On-site

$78K - $120K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... Reactive Programming|react JS Technical Skills 3 Technology|Analytics - Solutions|SQL Server ... frameworks such as FastAPI, Flask, or Django. • Develop responsive and user-friendly UI ...

Recorded Future

Principal Data Engineer

Boston, MA · On-site

$152K - $228K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

We are looking for a Principal Data Engineer to drive improvements in the Digital Risk Protection ... Flask, Django, FastAPI) * Architecting and delivering production-grade applications and ETL/ELT ...

Recorded Future

Principal Software Engineer

Boston, MA · On-site

$146K - $196K/yr

... FastAPI. • Proven experience architecting and delivering production-grade applications and ETL ... Statistics, Engineering, or equivalent experience. Preferred : • Experience or interest in ...

Pryzm

Senior Software Engineer

Boston, MA · On-site

$130 - $190/hr

  • Medical

  • Dental

  • Vision

  • Life

Backend expertise with modern frameworks such as Django, FastAPI, or Node.js, along with strong SQL ... Bonus experience with distributed systems, ETL/data pipelines, DevOps tooling (Kubernetes, Helm ...

Klaviyo

Senior AI Engineer

Boston, MA · On-site

$113K - $155K/yr

... FastAPI, Flask, or Django) and TypeScript or JavaScript, with experience in modern frontend ... engineering, model evaluation frameworks, and LLM observability tools such as LangSmith or Weights ...

Farsyt

Founding Software Engineer

Cambridge, MA · On-site

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Technical Stack Python (Django/DRF, FastAPI), React/TypeScript, PostgreSQL, Redis, Celery, AWS ... You'll be one of the first engineers -- your decisions will shape the company * Direct access to ...

Alumni Ventures

Senior Full-Stack Software Engineer

Boston, MA · On-site

$100 - $130/hr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

... with QA and DevOps to ensure robust, testable, and observable systems. * Contribute to ... Experience building backend services in Python (e.g., FastAPI) and TypeScript (e.g., Cloudflare ...

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Fastapi Developer information

See Boston, MA salary details

$18

$57

$88

How much do fastapi developer jobs pay per hour?

As of Aug 16, 2026, the average hourly pay for fastapi developer in Boston, MA is $57.40, according to ZipRecruiter salary data. Most workers in this role earn between $43.89 and $70.24 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?

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 are the most commonly searched types of Fastapi Developer jobs in Boston, MA?

The most popular types of Fastapi Developer jobs in Boston, MA are:

What are popular job titles related to Fastapi Developer jobs in Boston, MA?

For Fastapi Developer jobs in Boston, MA, the most frequently searched job titles are:

What job categories do people searching Fastapi Developer jobs in Boston, MA look for?

The top searched job categories for Fastapi Developer jobs in Boston, MA are:

What cities near Boston, MA are hiring for Fastapi Developer jobs?

Cities near Boston, MA with the most Fastapi Developer job openings:

Fastapi Developer jobs near you
Infographic showing various Fastapi Developer job openings in Boston, MA as of August 2026, with employment types broken down into 80% Full Time, 5% Part Time, and 15% Contract. Highlights an 82% Physical, 6% Hybrid, and 12% Remote job distribution, with an average salary of $119,394 per year, or $57.4 per hour.

Senior Software Engineer, Applied AI

Lila Sciences

Cambridge, MA

$133K - $176K/yr

Full-time

Re-posted 21 days ago

Job description

Your Impact at LILA

We are seeking a Senior Software Engineer to join our Applied AI group and help build the next generation of our AI-driven scientific platform. In this role, you will design and optimize the backend systems, data pipelines, and AI integrations that power intelligent, data-driven applications. You'll work at the intersection of backend engineering and machine learning, ensuring our platform seamlessly scales and supports cutting-edge applied AI techniques such as Retrieval-Augmented Generation (RAG), agentic AI, and large language model (LLM) integration.

This role is ideal for someone who thrives in bridging software engineering and applied AI-turning research into production-grade systems that drive real-world scientific discovery. If you are passionate about building performant, elegant systems that make AI useful and impactful, we would love to hear from you!

What You'll Be Building

  • Applied AI Integration: Design and deploy backend services and data pipelines that directly support advanced AI applications, including LLMs, RAG, and agentic frameworks.
  • API & Service Development: Build high-performance APIs and microservices that enable seamless integration between AI models, scientific tools, and user-facing applications.
  • Data Pipeline Architecture: Architect and manage scalable pipelines capable of handling structured, unstructured, and vectorized data for AI/ML workloads.
  • Database & Knowledge Systems: Implement and optimize SQL, NoSQL, and vector databases to support low-latency AI retrieval and inference workloads.
  • Cloud & Infrastructure: Leverage AWS, Kubernetes, and infrastructure-as-code (Terraform/CloudFormation) to build robust, production-ready AI platforms.
  • Performance & Reliability: Diagnose system bottlenecks, optimize for cost and speed, and ensure the reliability and fault-tolerance of AI-driven workflows.
  • Collaboration: Partner with ML researchers, platform engineers, and scientists to translate models and algorithms into scalable, production-ready systems.

What You'll Need to Succeed

  • Educational Background: Bachelor's or Master's in Computer Science, Engineering, or a related field.
  • Backend & Data Expertise: 7+ years of professional experience building and scaling production systems, including APIs, data pipelines, and distributed services.
  • Programming Skills: Strong Python skills (FastAPI, Flask, Django), with solid experience in backend service development.
  • Databases: Proven experience with SQL, NoSQL, and vector databases; skilled in schema design, indexing, and query optimization.
  • Applied AI Systems: Hands-on experience integrating ML models or AI-driven workflows into production services.
  • Cloud & DevOps: Proficiency with AWS, Docker/Kubernetes, CI/CD pipelines, and infrastructure-as-code.
  • Communication & Problem-Solving: Ability to work cross-functionally with diverse teams and explain complex technical concepts to non-experts.

Bonus Points For

  • Scientific & Data-Intensive Domains: Experience working with life sciences, materials sciences, or other research-heavy fields.
  • Startup Experience: Comfort with fast-paced, iterative environments where impact and adaptability matter.

Apply