29 fastapi developer jobs at 16 companies in Foster, RI

3w
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Python AWS Developer
Hartford or Lafayette
$81k-$172k/yr HybridFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
6+ YOE6+ years Python backend development, REST API (FastAPI/Flask), strong SQL, hands-on AWS (Lambda,S3,SQS,DynamoDB,EC2,EKS), CI/CD and production support experience.
Python, FastAPI, Flask, AWS Lambda, Amazon S3, Amazon SQS, DynamoDB, Amazon EC2, Amazon EKS, Boto3, CloudWatch, Jenkins, GitHub Actions, Terraform, CloudFormation, OpenShift, Kubernetes, PostgreSQL, Aurora, Java, ReactJS, Spring Boot, SQL
1w
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Senior Software Engineer
Framingham, Massachusetts, United States
HybridFull Time
Re:Build Manufacturing
Re:Build Manufacturing: Provides advanced engineering and US-based contract manufacturing services.
7+ YOE7+ years software development experience; bachelor's in CS/EE or related; proficiency in distributed systems and AWS; Python and FastAPI/Nuxt/Celery experience; mentoring and strong communication.
AWS, Python, FastAPI, Nuxt, Celery, MQTT
2mo
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Staff Software Engineer (Backend)
Boston or Cambridge
HybridFull Time
Axiomatic AI
Axiomatic AI: Verified AI platform for scientific and engineering hardware design.
10+ YOE10+ years backend development with 2+ years in a staff/principal role; deep Python and FastAPI experience; distributed systems, SQLAlchemy/PostgreSQL, GCP, AI/LLM integration, technical leadership, RFCs and architecture design.
Python, FastAPI, SQLAlchemy, Pydantic AI, FastMCP, Alembic, PostgreSQL, Redis, REST, WebSockets, SSE, MCP, Anthropic Claude, Google Gemini, OpenAI, Vertex AI Model Garden, Mistral OCR, Google Cloud Platform, Cloud Run, Cloud SQL, GCS, VPCs, IAM, Auth0, Terraform, Docker, GitHub Actions, Logfire, Sentry, OpenTelemetry, pytest, pytest-asyncio, pytest-cov
2mo
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Senior Software Engineer, Lab Software
Cambridge, Massachusetts, United States
$144k-$210k/yr OnsiteFull Time
Lila Sciences
Lila Sciences: Develops an AI platform for autonomous scientific research and discovery.
5+ YOESenior backend-focused software engineer with 5-8+ years of experience building large-scale systems; full-stack development; Python, FastAPI, React, TS, SQL/NoSQL; cloud, AWS, Kubernetes; collaboration with scientists.
React, TypeScript, Tailwind, FastAPI, SQL, NoSQL, Python, Pydantic, AWS, Kubernetes, Terraform, CloudFormation, GitHub Actions, Airflow, Prefect, Temporal, Dagster
3w
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Senior AI Engineer
Seattle or Cambridge or Princeton or Madison
$138k-$183k/yr OnsiteFull Time
Bristol Myers Squibb
Bristol Myers SquibbNYSE: BMY: Develops and manufactures innovative prescription biopharmaceutical medicines.
5+ YOEBachelor's degree,5+ years building and scaling cloud-native AI applications,proficiency in Python/FastAPI or TypeScript/Node,AWS experience,LLM/agent integration,CI/CD and infra-as-code knowledge.
AWS, Claude, LangSmith, Python, FastAPI, TypeScript, Node, LangGraph, Claude Agent SDK, LangChain, PydanticAI, Anthropic, OpenAI, Gemini, Grok, AWS Bedrock, Terraform, AWS CDK, CloudFormation, GitHub, Claude Code, Codex, Gemini CLI, Cursor, Windsurf, GitHub Copilot, LangSmith, promptfoo
3w
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Senior AI Engineer
Seattle or Madison or Princeton or Cambridge
$138k-$183k/yr OnsiteFull Time
Bristol Myers Squibb
Bristol Myers SquibbNew York Stock Exchange: BMY: Develops and distributes innovative medicines for serious diseases.
5+ YOE5+ years building cloud-native AI applications integrating LLMs, agents, retrieval, and workflows; strong Python/FastAPI or TypeScript/Node skills; AWS experience; knowledge of secure, observable, production AI patterns.
Python, FastAPI, TypeScript, Node, LangGraph, Claude Agent SDK, LangChain, PydanticAI, MCP, FastMCP, Anthropic, OpenAI, Gemini, Grok, AWS Bedrock, AWS, Terraform, AWS CDK, CloudFormation, GitHub, LangSmith, promptfoo, Claude Code, Codex, Gemini CLI, Cursor, Windsurf, GitHub Copilot
3w
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Forward Deployed Engineer
Cambridge, Massachusetts, United States
$100k-$130k/yr HybridFull Time
Upgraid
Upgraid: AI-driven diagnostics and energy simulation for building upgrades.
Full-stack engineer experienced with Python/FastAPI, PostgreSQL, AWS, and a modern JS framework; strong client-facing experience and ability to deliver production-ready customer solutions.
Python, FastAPI, PostgreSQL, AWS, Svelte, React, Vue
1mo
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Senior Software Engineer - Product
Yonkers or Washington or Colchester or Arizona or California or Connecticut or Illinois or Maryland or Massachusetts or Michigan or New Hampshire or New Jersey or New York or Texas or Vermont or Virginia or District of Columbia
$115k-$160k/yr RemoteFull Time
Consumer Reports
Consumer Reports: Tests products and publishes ratings for consumer advocacy.
5+ YOE5+ years software engineering experience; proficiency with React, React Native, Python (FastAPI); experience building multi-platform apps, CI/CD, automated testing, observability; strong communication; bachelor’s degree preferred.
React, React Native, Python, FastAPI, AWS, Azure, Google Cloud Platform, CI/CD
1mo
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AIML Software Engineer, AI for Science
London or San Francisco or Zug or Heidelberg or Cambridge
$136k-$227k/yr HybridFull Time
GSK
GSKLondon Stock Exchange: GSK: Develops and manufactures innovative vaccines and specialty medicines.
Degree in a quantitative/engineering discipline or equivalent experience; advanced Python and FastAPI programming; experience with GCP/Azure and cloud-native architectures; familiarity with PyTorch/JAX/TensorFlow, CI/CD, containerization, SQL and production monitoring.
Python, FastAPI, GCP, Azure, PyTorch, JAX, TensorFlow, CI/CD, Kubernetes, Google Kubernetes Engine, Cloud Run, Cloud Storage, Artifact Registry, Cloud SQL, SQL, Terraform, shell scripting
4w
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Senior Software Development Engineer
Cambridge, Massachusetts, United States
$125k-$160k/yr HybridFull Time
Mitsubishi Electric Iconics Digital Solutions
Mitsubishi Electric Iconics Digital Solutions: Provides industrial automation, SCADA, and IoT software solutions.
8+ YOE8+ years software development experience, proven technical leadership, production experience with generative AI, cloud-native architectures, full-stack development, and a bachelor's in CS or equivalent practical experience preferred.
Python, JavaScript, TypeScript, C#, Java, React, Vue, Angular, Node.js, Express, FastAPI, Django, Flask, ASP.NET, Spring Boot, PostgreSQL, SQL Server, DynamoDB, MongoDB, LLM APIs, AWS, Azure, GCP, Docker, Kubernetes, Terraform, CloudFormation
1mo
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Full Stack Staff Software Engineer — AI-Augmented Development
Charlotte or Hartford or Columbus or Chicago
$116k-$174k/yr HybridFull Time
The Hartford
The HartfordNYSE: HIG: Provides business and personal insurance, group benefits, and investments.
10+ YOE10+ years software engineering experience, 5+ years tech lead experience; Bachelor’s in CS or related (or equiv. experience); expertise in frontend and backend stacks, cloud (AWS/GCP), CI/CD, databases, APIs, and AI-augmented development tools.
React, Angular, Vue.js, TypeScript, HTML5, CSS3, Java, Spring Boot, Node.js, Express, Python, FastAPI, Django, .NET, RESTful APIs, GraphQL, gRPC, AWS, GCP, AWS Bedrock, GCP Vertex, Vertex Studio, Docker, Kubernetes, Jenkins, GitHub Actions, GitLab CI, SQL, NoSQL, PostgreSQL, MongoDB, DynamoDB, Redis, Kafka, RabbitMQ, GitHub Copilot, Cursor, Claude Opus, OpenAI, Anthropic, LangChain, Semantic Kernel, AutoGen, CrewAI
2mo
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Software Engineer, Data Science
Cambridge, Massachusetts, United States
$120k-$162k/yr OnsiteFull Time
Wave Life Sciences
Wave Life SciencesNasdaq: WVE: Designing and developing RNA medicines for genetic diseases.
6+ YOEBachelor's with 8+ years or Master's with 6+ years; strong full-stack with Python backend and React frontend; REST APIs; CI/CD; relational DBs; microservices/microfrontend experience preferred.
Python, Flask, FastAPI, React, CI/CD, Relational Databases
2w
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Senior Software Development Engineer - Microservices
Hartford, Connecticut, United States
$102k-$204k/yr HybridFull Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
5+ YOE2+ Mgmt5+ years software engineering, 2+ years technical lead experience; strong Python and API framework skills; experience with microservices, GCP, Kubernetes/GKE, Docker, CI/CD, Kafka, BigQuery/BigTable/SQL; hands-on GenAI/LLM/RAG/Agentic AI and prompt engineering.
Python, FastAPI, Flask, Google Cloud Platform (GCP), Kubernetes (GKE), Docker, CI/CD, GitHub, Kafka, BigQuery, BigTable, SQL, Gemini, Vertex AI, OpenAI, Claude
1mo
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Full Stack Staff Software Engineer — AI-Augmented Development
Charlotte or Hartford or Columbus or Chicago
$116k-$174k/yr HybridFull Time
The Hartford
The HartfordNYSE: HIG: Provides property and casualty insurance, group benefits, and wealth management.
10+ YOE10+ years software engineering experience, 5+ years full-stack tech lead experience, BS in CS or equivalent, expertise in frontend/backend/cloud, AI-augmented development proficiency, strong testing and architecture skills.
React, Angular, Vue.js, TypeScript, Java, Spring Boot, Node.js, Express, Python, FastAPI, Django, .NET, RESTful APIs, GraphQL, gRPC, AWS, GCP, Docker, Kubernetes, PostgreSQL, MongoDB, DynamoDB, Redis, Kafka, RabbitMQ, Jenkins, GitHub Actions, GitLab CI, GitHub Copilot, Cursor, Claude Opus, OpenAI, Anthropic, GCP Vertex, AWS Bedrock, Vertex Studio, Semantic Kernel, CrewAI, LangChain, AutoGen
3mo
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Senior AI Infrastructure Platform Engineer, Assistant Vice President
Quincy or Austin
$90k-$158k/yr OnsiteFull Time
State Street
State StreetNYSE: STT: Provides investment management and custody services to institutional investors.
5+ YOELead GenAI/Agentic AI projects; strong full-stack development and architecture; collaboration with business and IT; experience with cloud and AI/ML tools.
Python, FastAPI, Unix, Docker, PostgreSQL, Lang Chain, Kubernetes, Databricks, API Management, AWS, Azure, OpenAI
3mo
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Senior AI Infrastructure Platform Engineer, Assistant Vice President
Quincy or Austin
$90k-$158k/yr HybridFull Time
State Street
State StreetNYSE: STT: Provides investment servicing and management to institutional investors.
5+ YOELead/architect AI automation platforms; hands-on development with AI/ML, cloud, and DevOps; senior engineer capable of driving projects and collaborating with cross-functional teams.
Python, FastAPI, Unix, Docker, Postgres, Lang Chain, Lang Graph, Kubernetes, Databricks, API Management, AWS, Azure, OpenAI, Azure Foundry, Sagemaker, Lambda, EKS
1mo
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Agentic AI Architect - Intelligence Engineering (East)
Atlanta or Boston or Charlotte or Hartford or Miami or New Brunswick or New York City or Philadelphia or Raleigh or Washington
$108k-$218k/yr HybridFull Time
Slalom
Slalom: Provides business and technology consulting and software engineering services.
5+ YOE5+ years software engineering experience with 2+ years on generative/agentic AI; experience designing multi-agent systems, RAG, cloud AI platforms, Python and API frameworks, evaluation and governance for production AI systems.
Amazon Web Services, Azure, Google Cloud, AWS Bedrock, Azure AI Foundry, OpenAI Service, GCP Vertex AI, Gemini, Databricks, Lang Graph, Strands Agents SDK, OpenAI Agents SDK, Google ADK, Model Context Protocol (MCP), LangSmith, RAGAS, DeepEval, Claude Code, Cursor, Kiro, Python, FastAPI, Flask
1mo
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Principal Scientist, Machine Learning - Biomolecules
Cambridge, Massachusetts, United States
$208k-$286k/yr OnsiteFull Time
Flagship Pioneering
Flagship Pioneering: Conceives, creates, and builds life science platform companies
5+ YOEMaster's or PhD in ML/computational field with 5+ years scientific/engineering experience; leadership experience; expertise in Python, modern ML frameworks (PyTorch/JAX/TensorFlow), MLOps and cloud infrastructure; strong publication or patent record.
Python, PyTorch, JAX, TensorFlow, DVC, LakeFS, MLflow, W&B, S3, Batch, ECS, EKS, SageMaker, Docker, Terraform, CDK, GitHub Actions, gnina, DiffDock, Airflow, Prefect, Argo, Redshift, Snowflake, FAISS, pgvector, FastAPI, Streamlit, Gradio
1mo
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Associate Dir, Full Stack Data Scientist
Cambridge or Whippany
$132k-$197k/yr OnsiteFull Time
Bayer
BayerFrankfurt Stock Exchange: BAYN: Global enterprise focused on healthcare and nutrition.
Master's degree in a quantitative field, experience building full-stack data science applications, proficiency with frontend (React/Angular/Vue.js), backend (Node.js, Python, Java), cloud (AWS/GCP/Azure), containerization, CI/CD, databases, ML workflows, and pharma GxP/CSV compliance.
React, Angular, Vue.js, Cursor, Node.js, Python, Flask, FastAPI, Django, Java, RESTful APIs, GraphQL, WebSockets, AWS, GCP, Azure, Docker, Kubernetes, CI/CD pipelines, Git, SQL, PostgreSQL, MySQL, NoSQL, MongoDB, Redis, D3.js, Plotly, MLOps