Backend Engineer – Python, FastAPI, APIs, Automation & AI Integrations

Posted 3 hours ago

Worldwide

Needs to hire 2 Freelancers
Summary

We are looking for a strong Backend Engineer to design, build and maintain the services behind a growing set of business applications, automation workflows and AI-powered systems. You will work closely with an AI/ML engineer and other technical stakeholders to turn business requirements and prototypes into reliable production services. This is not primarily a website development role. We are looking for someone comfortable designing backend architecture, APIs, databases, asynchronous processing, integrations and deployment infrastructure. What you will work on: Design and develop backend services and APIs. Build REST APIs using Python and frameworks such as FastAPI, Django or Flask. Design clean service architecture that can evolve as products grow. Integrate internal services with third-party APIs and external platforms. Develop authentication, authorization and access-control mechanisms. Design relational database schemas and optimize database queries. Build asynchronous and long-running processing workflows. Implement queues, background workers, retries and scheduled jobs. Develop services that expose and consume AI/ML capabilities. Handle file, document and data-processing workflows. Implement structured logging, monitoring and error handling. Containerize services using Docker. Build and maintain CI/CD pipelines. Deploy and operate applications in cloud environments. Improve system reliability, security and performance. Write tests and maintain clear technical documentation. Diagnose production issues and improve existing services. Core experience: We are particularly interested in candidates with practical experience in: Python FastAPI, Django and/or Flask REST API design PostgreSQL SQL Docker Git Authentication and authorization Background workers and asynchronous processing Redis Message queues Cloud platforms such as AWS, GCP or Azure CI/CD Unit and integration testing Logging and monitoring Third-party API integrations Experience with technologies such as Celery, Redis Queue, RabbitMQ, Kafka, SQS or similar systems is useful.

  • Less than 30 hrs/week
    Hourly
  • 3-6 months
    Duration
  • Expert
    Experience Level
  • $20.00

    -

    $40.00

    Hourly
  • Remote Job
  • Ongoing project
    Project Type
Skills and Expertise
Mandatory skills
PostgreSQL
MongoDB
Redis
Activity on this job
  • Proposals:20 to 50
  • Last viewed by client:1 hour ago
  • Interviewing:
    0
  • Invites sent:
    0
  • Unanswered invites:
    0
About the client
Member since Aug 10, 2026
  • Kenya
    9:30 PM
  • Tech & IT
    Mid-sized company (10-99 people)

Explore similar jobs on Upwork

Internet Radio Metadata Expert NeededFixed-price‐ Posted 1 month ago
PHP
REST API
API Integration
SHOUTcast
Node.js

How it works

  • Post a job icon
    Create your free profile
    Highlight your skills and experience, show your portfolio, and set your ideal pay rate.
  • Talent comes to you icon
    Work the way you want
    Apply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
  • Payment simplified icon
    Get paid securely
    From contract to payment, we help you work safely and get paid securely.
Want to get started? Create a profile

About Upwork

  • Rating is 4.9 out of 5.
    4.9/5
    (Average rating of clients by professionals)
  • G2 2021
    #1 freelance platform
  • 49,000+
    Signed contract every week
  • $2.3B
    Freelancers earned on Upwork in 2020

Find the best freelance jobs

Growing your career is as easy as creating a free profile and finding work like this that fits your skills.

Trusted by

  • Microsoft Logo
  • Airbnb Logo
  • Bissell Logo
  • GoDaddy Logo