Mid/Senior Back-end Developer

Jobtailor; United States; On-site; USD 120,000 - 160,000; Full time

Job summary

Jobtailor is seeking a back-end developer experienced with FastAPI to build and maintain REST APIs in a production environment. You will design asynchronous endpoints, implement JWT authentication, RBAC, and integrate with external systems, while ensuring scalability and secure data handling.

You will work with SQLAlchemy Async, PostgreSQL, Redis, Docker, and WebSockets, organize code in clean layers, and participate in reviews, sprints, and operational tasks.

Qualifications

• Minimum of 3 years professional experience in back-end development.

Responsibilities

• Develop and maintain REST APIs using FastAPI.
• Design secure, well-structured, and high-performance asynchronous endpoints.
• Work with JWT authentication, refresh tokens, and RBAC.
• Implement permission and profile-based access controls.
• Integrate internal and external systems via REST APIs and webhooks.
• Structure relational databases using SQLAlchemy Async.
• Perform relational modeling, queries, joins, indexes, migrations, and query optimization.
• Implement structured logging and centralized error handling.
• Work with Redis, caching, WebSockets, and asynchronous processing when required.
• Organize code in layers with a clear separation of responsibilities.
• Use Docker for running and standardizing the environment.
• Participate in meetings, technical alignments, validations, code reviews, sprint follow-ups, and operational tasks when requested by management, PM, PO, or technical leadership

Skills

FastAPI Development

Asynchronous Programming

Python

REST APIs

JWT Authentication

RBAC

Technical Communication

Autonomy

Commitment to Deadlines

Tools

Docker

PostgreSQL

SQLAlchemy 2.0 Async

Redis

WebSockets

Git

Job description

• Develop and maintain REST APIs using FastAPI


• Design secure, well-structured, and high-performance asynchronous endpoints


• Work with JWT authentication, refresh tokens, and RBAC


• Implement permission and profile-based access controls


• Integrate internal and external systems via REST APIs and webhooks


• Structure relational databases using SQLAlchemy Async


• Perform relational modeling, queries, joins, indexes, migrations, and query optimization


• Implement structured logging and centralized error handling


• Work with Redis, caching, WebSockets, and asynchronous processing when required


• Organize code in layers with a clear separation of responsibilities


• Use Docker for running and standardizing the environment


• Participate in meetings, technical alignments, validations, code reviews, sprint follow-ups, and operational tasks when requested by management, PM, PO, or technical leadership

Requirements

• Minimum of 3 years professional experience in back-end development


• Proven experience in real projects and production environments


• Proficient in Python


• Experience with FastAPI


• Experience with REST APIs


• Practical knowledge of asynchronous applications using async/await


• Experience with SQLAlchemy 2.0 Async


• Experience with PostgreSQL


• Knowledge of relational modeling


• Knowledge of complex JOINs, indexes, migrations, and query optimization


• Experience with JWT authentication


• Knowledge of RBAC and permission control


• Experience integrating external APIs and webhooks


• Knowledge of structured logging and centralized error handling


• Experience with Docker and containers


• Knowledge of Git


• Ability to diagnose logs, bottlenecks, and operational failures


• Good technical communication, analytical skills, autonomy, and commitment to deadlines

Core Competencies

Demonstrates expertise in developing and maintaining REST APIs using FastAPI, with a strong focus on asynchronous programming, relational database management, and secure authentication methods. Proficient in implementing structured logging and error handling while ensuring high-performance and scalable application architecture.

Highest-signal resume keywords

• FastAPI Development


• REST API Integration


• Asynchronous Programming


• SQLAlchemy Async


• JWT Authentication

ATS Optimization Keywords

Hard Skills

• Python


• FastAPI


• REST APIs


• SQLAlchemy 2.0 Async


• PostgreSQL


• Relational Modeling


• JOINs


• Indexes


• Migrations


• Query Optimization

Soft Skills

• Technical Communication


• Analytical Skills


• Autonomy


• Commitment to Deadlines

Industry Keywords

• JWT Authentication


• RBAC


• Permission Control


• Structured Logging


• Centralized Error Handling

Tools & Technologies

• Docker


• Redis


• WebSockets


• Git