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Fastapi Developer Jobs in Brockton, 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.

Motion Recruitment

Full Stack Engineer

Cambridge, MA · On-site

... or FastAPI • Strong proficiency with TypeScript and React • Experience with PostgreSQL and ... influencing engineering culture • Experience making architecture decisions in growing ...

Recorded Future

Principal Data Engineer

Boston, MA · On-site

$152K - $228K/yr

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 ...

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 ...

Pryzm

Senior Software Engineer

Boston, MA · On-site

$130 - $190/hr

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 ...

New

Farsyt

Founding Software Engineer

Cambridge, MA · On-site

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 ...

Deloitte

Integration Engineer II

Boston, MA · On-site

$113K - $152K/yr

AI & Engineering leverages cutting-edge engineering capabilities to build, deploy, and operate ... Build backend services and APIs using Python (e.g., FastAPI, Django, Flask), Javascript, Azure ...

Klaviyo

Senior AI Application Engineer

Boston, MA · On-site

... 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 ...

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Fastapi Developer information

See Brockton, MA salary details

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How much do fastapi developer jobs pay per hour?

As of Aug 8, 2026, the average hourly pay for fastapi developer in Brockton, MA is $53.07, according to ZipRecruiter salary data. Most workers in this role earn between $40.58 and $64.95 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.
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Fastapi Developer jobs near you

Senior AI Engineer - Customer Agent

Klaviyo

Boston, MA • On-site

$113K - $155K/yr

Full-time

Re-posted 6 days ago

Job description

Job Summary:
Klaviyo is a company that empowers creators to own their destiny by making first-party data accessible and actionable. They are seeking a Senior AI Engineer on the Customer Agent team to design and build scalable backend systems that support AI solutions for their extensive customer base.
Responsibilities:
• Design and build backend systems that support scaling our AI solutions for 167K+ customers.
• Develop robust, reliable and scalable data collection and processing pipelines for machine learning models to train and consume.
• Develop robust, reliable and scalable services to serve AI models in production environments.
• Contribute to evolving our agentic architecture, making our AI agents more self-sufficient and performant.
• Contribute to a culture of ownership, experimentation, and customer-centric product thinking.
Qualifications:
Required:
• 5-7 years of professional experience in software engineering, with a strong focus on backend systems and distributed architectures.
• Have hands-on experience building and deploying generative AI and agentic AI applications into production, with expertise in prompt engineering, few-shot learning, fine tuning and evaluation.
• Experienced backend engineer with a strong track record of building scalable, distributed systems, especially in the service of AI agent capabilities.
• Proficient in Python and modern backend frameworks (FastAPI, Django preferred).
• Experience creating human and automated evals to ensure high AI model quality.
• Proficient in big data tools such as Apache Spark and Hadoop.
• Deep experience with asynchronous processing and distributed task queues (Celery, Kafka, SQS, RabbitMQ, Redis).
• Strong understanding of database technologies and ORMs (SQLAlchemy, Alembic).
• Comfortable with cloud-native architectures (AWS) and container orchestration (Kubernetes); can manage infrastructure and CI/CD pipelines.
• Skilled at designing and building robust APIs.
• Able to operate with a high degree of autonomy, handle ambiguity, and thrive in a fast-moving, startup-like environment.
• Driven by curiosity. You're someone who learns and stays up to date with this rapidly evolving field.
• Comfortable collaborating directly with product managers and customers to shape solutions.
Preferred:
• Trained ML models in the past and deployed them in production systems to generate impact to businesses.
• Experience in reinforcement learning.
Company:
Klaviyo is an automation and email platform designed to help grow businesses. Founded in 2012, the company is headquartered in Boston, USA, with a team of 1001-5000 employees. The company is currently Late Stage.

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