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Python Fastapi Developer Jobs in Massachusetts (NOW HIRING)

Lila Sciences

Senior Software Engineer, App

Cambridge, MA · On-site

$133.90K - $176.50K/yr

... Nx, TailWind, FastAPI, SQL/NoSQL, Python, Pydantic) * Hands on experience using AI coding ... Cloud & DevOps Knowledge: Hands-on experience with AWS; strong understanding of Kubernetes and ...

Tagup

Senior Software Engineer

Boston, MA

$140K - $180K/yr

Python (FastAPI, SQLAlchemy, Pandas) - We value your software engineering fundamentals and ability to learn over which specific languages you have experience in. * Data: PostgreSQL, Redis. * Infra:

Tagup

Senior Software Engineer

Boston, MA · On-site

$140K - $180K/yr

Python (FastAPI, SQLAlchemy, Pandas) - We value your software engineering fundamentals and ability to learn over which specific languages you have experience in. * Data: PostgreSQL, Redis. * Infra:

Klaviyo

Software Engineer II Devx

Boston, MA · On-site

... developer-friendly public and internal APIs by providing robust frameworks, intuitive tools, and ... Python, Django REST Framework, Django, FastAPI MySQL / PostgreSQL, DocumentDB, ClickHouse Redis ...

Lila Sciences

Senior Software Engineer, App

Cambridge, MA · On-site

$133.90K - $176.50K/yr

... Nx, TailWind, FastAPI, SQL/NoSQL, Python, Pydantic) * Hands on experience using AI coding ... Cloud & DevOps Knowledge: Hands-on experience with AWS; strong understanding of Kubernetes and ...

CVS Health

Senior Data Engineer

Wellesley, MA · On-site

$92.70K - $222.48K/yr

Develop Python-based APIs (Flask/FastAPI) to enable seamless data access, model integration, and ... Knowledge of CI/CD and DevOps practices for data engineering * Experience with other cloud services ...

Klaviyo

Senior Software Engineer - Devx

Boston, MA

$133.10K - $175.50K/yr

... and the developer-facing tools and systems that support our app ecosystem. Additional ... Python * Django REST Framework, Django, fastAPI * React, React Query * MySQL / postgreSQL

Knak Digital

AI Engineer

Becket, MA · Remote

$130K - $150K/yr

AI Engineer Location: Remote (US only) Compensation: $130,000 to $150,000 A small, technical ... Strong Python and experience building and deploying backend services and APIs (FastAPI, Flask, or ...

twenty80.io

Founding Full Stack Engineer

Boston, MA · On-site +1

$150K - $190K/yr

Set up deployment pipelines, monitoring, and basic DevOps workflows * Help hire and mentor future ... React, TypeScript, Next.js * Backend: Node.js (Express/NestJS) or Python (Django/FastAPI)

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Python Fastapi Developer information

What is a Python FastAPI Developer job?

A Python FastAPI Developer is responsible for designing, developing, and maintaining backend applications using FastAPI, a modern web framework for building APIs with Python. They work on creating high-performance APIs, integrating with databases, implementing authentication, and ensuring scalability. This role often involves working with asynchronous programming, cloud services, and containerization tools like Docker. Developers collaborate with teams to create efficient, secure, and well-documented API endpoints for web and mobile applications.

What are the key skills and qualifications needed to thrive in the Python Fastapi Developer position, and why are they important?

To thrive as a Python FastAPI Developer, you need strong proficiency in Python programming, experience designing RESTful APIs with FastAPI, and a background in web development concepts. Familiarity with version control systems like Git, containerization tools such as Docker, and knowledge of cloud platforms or SQL/NoSQL databases are commonly required, and certifications in cloud services or Python development can be advantageous. Excellent problem-solving skills, effective communication, and the ability to collaborate in agile teams help developers contribute efficiently to complex projects. These competencies ensure robust, scalable backend solutions and smooth coordination within development teams to meet business goals.

What are some typical daily tasks for a Python FastAPI Developer?

A Python FastAPI Developer typically spends their day designing, developing, and maintaining RESTful APIs to support web or mobile applications. This involves writing clean and efficient Python code, collaborating with frontend developers or other backend engineers to integrate new features, and ensuring the application meets performance and security standards. Developers also participate in code reviews, debugging, and continuous integration processes, while regularly communicating with product managers or stakeholders to align on project requirements. Staying up to date with FastAPI enhancements and industry best practices is also a common part of the role.
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Senior Backend Platform Engineer, Distributed Systems

Code Metal

Boston, MA • Hybrid

$133.10K - $175.50K/yr

Other

Medical, Dental, Vision, Retirement, PTO

Posted 27 days ago

Job description

Help redefine how the DoD makes multi-billion-dollar force-design decisions. In this role, you'll fuse physics-driven simulation, interactive computing, and verified AI code-generation to create next-generation wargaming platforms. If building ultra-low-latency APIs, taming high-volume geospatial data, and leading with clean, production-ready Python gets you fired up, let's talk.

What you'll do
  • Own the service layer-design, build, and scale FastAPI micro-services and lightning-fast ZeroMQ messaging pipelines running in Kubernetes and bare-metal clusters.
  • Wrangle data at speed & scale-shape and query multi-TB Postgres/PostGIS datasets, orchestrate Redis for sub-millisecond state, and keep everything rock-solid under bursty load.
  • Glue the stack together-expose crisp, well-versioned REST & WebSocket endpoints for the frontend crew and simulation kernel.
  • Ship continuously-automate CI/CD, observability, and security hardening to DoD standards; push to prod with confidence.
  • Lead by doing-drive code reviews, mentor teammates, and set the standard for test coverage and documentation.
Why Code Metal?
  • Mission with impact: your APIs become the nervous system of digital battlefields influencing multi-billion-dollar defense acquisitions.
  • Velocity: tight-knit teams, weekly releases, zero bureaucratic drag.
  • Ownership: no passengers-every engineer ships code that matters.

Requirements

Must-have credentials
  • 4+ years building production backends in modern Python, with deep FastAPI (or equivalent async framework) experience.
  • Proven expertise in ZeroMQ, NATS, Kafka, or similar high-throughput messaging systems.
  • Hands-on with Postgres/PostGIS and Redis in performance-critical workloads.
  • Cloud-native chops-Docker, Kubernetes, and one major provider (AWS, GCP, Azure, or GovCloud).
  • Active Secret clearance or eligibility to obtain one. 
Bonus points
  • C++ or Rust skills for bridging high-performance simulation modules.
  • Hardened services for FedRAMP / STIG compliance.
  • Observability mindset-Prometheus, Grafana, OpenTelemetry.
  • TS/SCI clearance.

Benefits

  • Health care plan with 100% premium coverage, including medical, dental, and vision.
  • 401k with 5% matching.
  • Paid Time Off (Uncapped Vacation, plus Sick & Public Holidays).
  • Flexible hybrid work arrangement.
  • Relocation assistance for qualifying employees.

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