Senior Python Developer for API-to-SQL Data Synchronization Platform

Posted 2 days ago

Worldwide

Summary

We are seeking an experienced Python backend developer to design and implement a data integration platform that synchronizes data from one or more external REST APIs into a SQL database. The system will periodically retrieve data from external services, transform and validate the incoming records, and persist them into a relational database while maintaining complete auditability and operational visibility. The solution must be reliable, maintainable, and capable of handling evolving API schemas, large datasets, intermittent connectivity issues, and long-running unattended operation. Responsibilities • Design the overall architecture • Implement API integration components • Design database schema and persistence layer • Handle pagination, retries, rate limits, and error recovery • Implement data validation and transformation logic • Create structured logging and debugging facilities • Provide deployment and configuration documentation • Ensure reliable synchronization of new and updated records Required Skills • Strong Python experience • Experience integrating third-party REST APIs • Experience with SQL databases (PostgreSQL, SQL Server, or MySQL) • Experience building backend services and automation systems • Strong debugging and troubleshooting skills • Experience handling large data imports and synchronization processes Preferred Experience • FastAPI • SQLAlchemy • Docker • Background job processing • Data migration and ETL systems • Monitoring and observability tooling • Cloud deployment experience Project Goals The resulting system should: • Synchronize data from external APIs into a local database • Support incremental updates • Handle API schema changes gracefully • Maintain detailed audit logs • Provide sufficient logging and diagnostics for troubleshooting • Be easily extensible for additional API integrations in the future To Apply Please begin your proposal with the words "Python Integration" so I know you have read the full description. Please also describe: 1. Similar integration projects you have completed 2. How you would structure the application 3. How you would handle API schema changes over time 4. How you would ensure reliable synchronization without duplicates or missing records 5. Your preferred technology stack for this project

  • Less than 30 hrs/week
    Hourly
  • 1-3 months
    Duration
  • Intermediate
    Experience Level
  • $15.00

    -

    $35.00

    Hourly
  • Remote Job
  • Ongoing project
    Project Type
Skills and Expertise
Mandatory skills
Python
API
SQL
API Integration
Activity on this job
  • Proposals:20 to 50
  • Last viewed by client:yesterday
  • Interviewing:
    0
  • Invites sent:
    0
  • Unanswered invites:
    0
About the client
Member since Jun 3, 2026
  • Greece
    Thessaloniki5:27 AM
  • Tech & IT
    Individual client

Explore similar jobs on Upwork

Git
WordPress
PHP
MySQL
JavaScript
Back-test and Code Stock StrategiesHourly‐ Posted 4 weeks ago
PHP
Python
Java
JavaScript

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