Python FastAPI Backend Developer – Ongoing Part-Time Work
Publicada el 2026-07-20
Descripción de la oferta
We are looking for a reliable Python backend developer to provide ongoing part-time support for an established production SaaS platform. You will work within an existing backend codebase alongside other developers, completing features, resolving bugs, improving automated tests, and submitting clean, maintainable pull requests. Technology Stack Python FastAPI Pydantic v2 SQLAlchemy PostgreSQL or another relational database REST APIs Git and GitHub Automated Python testing Third-party API integrations Webhooks Responsibilities Develop and maintain FastAPI endpoints Implement backend features based on assigned tickets and acceptance criteria Build reusable filtering, validation, and database-query functionality Write and optimize SQLAlchemy queries Troubleshoot and fix backend bugs Work with Pydantic models and strongly typed Python code Integrate external APIs and webhook-based services Write unit and integration tests Investigate failed workflows and identify root causes Review existing code before implementing changes Submit clear, focused, and well-tested GitHub pull requests Communicate progress, blockers, and technical decisions clearly Required Experience Strong professional experience with Python backend development Hands-on experience with FastAPI Good knowledge of Pydantic and SQLAlchemy Experience working with PostgreSQL or other relational databases Ability to understand and contribute to an existing production codebase Experience writing automated tests Familiarity with Git, GitHub, branches, pull requests, and code reviews Understanding of REST API design, input validation, error handling, and database transactions Ability to work independently from Linear, Jira, or similar development tickets Engagement Details Ongoing part-time position Approximately 10–20 hours per week initially Potential for additional hours based on performance and availability Fully remote collaboration Some overlap with North American or European working hours is preferred We are looking for someone who writes maintainable code and takes time to understand the existing architecture rather than applying quick fixes without considering downstream effects. How to Apply Please include the following in your proposal: Your experience with FastAPI, Pydantic, and SQLAlchemy An example of a production Python backend you have worked on Your experience troubleshooting complex backend or database issues Your weekly availability Your hourly rate Your GitHub profile or relevant code samples, where available Please begin your proposal with the phrase “FastAPI backend” so we know you have read the complete posting.
Skills
Fuente original: freelancer