Available to hire
Hi, I’m Sadra Jafari, a Python backend developer with solid experience in Django, Redis, Celery, and PostgreSQL. I have developed complex, real-world projects such as a university automation system, a real-time messenger, and e-commerce platforms, all of which include unit-tested, and maintainable code. What makes me stand out is my ability to quickly learn new technologies, design robust backend systems, and deliver high-quality solutions with best practices in testing and deployment.
Skills
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Experience Level
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
Language
Persian
Advanced
English
Advanced
Work Experience
Django Backend Developer / Full Stack Developer at Self-Employed / Freelance
September 1, 2023 - November 7, 2025Designed and developed multiple Django-based backend systems for client applications, focusing on scalability, security, and performance. Built an invoice management API with CRUD operations, data aggregation, and advanced filtering. Implemented a OpenAI GPT-based API in a Flask backend with secure authentication via API keys and token validation in headers. Created a product availability notification module for an e-commerce application. Implemented a one-time login system using Django and Celery for two-step verification via email. Added a ticketing module with user-created tickets, admin responses, and message threads. Collaborated with clients to define requirements, delivered maintainable code, and deployed features to production environments.
Django Developer (Freelance) at Self-Employed / Freelance
September 1, 2023 - November 7, 2025Designed and developed multiple Django-based backend systems for client applications, focusing on scalability, security, and performance. Built an invoice management API with CRUD operations, data aggregation, and advanced filtering (by date, month, amount, source, and destination). Optimized query performance by adding database indexes on frequently filtered fields. Integrated OpenAI GPT-based API into a Flask backend, implementing secure authentication with API keys and token validation via headers. Implemented a product availability notification module for an e-commerce app. Created a ticketing module with user-created tickets, admin responses, message threads, and sorting features based on unread messages to improve customer support workflow. Collaborated closely with clients to gather requirements, deliver maintainable code, and deploy features on production environments.
Freelance Software Engineer / Django Backend Developer at Self-Employed / Freelance
September 1, 2023 - November 7, 2025Designed and developed multiple Django-based backend systems for client applications, focusing on scalability, security, and performance. Built an invoice management API with CRUD operations, data aggregation, and advanced filtering. Optimized database queries with indexing and field filtering. Implemented a product availability notification module for e-commerce, integrated Redis for background processing, and created a maintenance-friendly workflow for customer support. Collaborated with clients to gather requirements, delivered maintainable code, and deployed features in production environments.
Django Developer at Self-Employed / Freelance
September 1, 2023 - November 7, 2025Designed and developed Django-based backend systems for client applications, focusing on scalability, security, and performance. Built a CRUD invoice management API with data aggregation and advanced filtering. Implemented API-key authentication and Redis caching; set up Celery-based background tasks. Collaborated with clients to gather requirements and deployed features to production environments.
Freelance Backend Developer / Django Developer at Self-Employed / Freelance
September 1, 2023 - November 7, 2025Self-employed freelance Django/backend developer delivering scalable, secure backend systems for client applications. Built an invoice management API with CRUD, data aggregation, and advanced filtering; optimized queries by adding database indexes; integrated an OpenAI GPT-based API; implemented a product availability notification module for an e-commerce app; created a Django + Celery-based temporary login system for one-time email verification codes; collaborated with clients to gather requirements and deployed features to production environments.
Education
Master's in ITS Software Engineering at Azad University
September 1, 2023 - November 7, 2025Bachelor's in Biomedical Engineering at Azad University
February 1, 2018 - December 1, 2022Master's in IT Software Engineering at Azad University
September 1, 2023 - November 7, 2025Bachelor's in Biomedical Engineering at Azad University
February 1, 2018 - December 1, 2022Master's in IT Software Engineering at Azad University
September 1, 2023 - November 7, 2025Bachelor's in Biomedical Engineering at Azad University
February 1, 2018 - December 1, 2022Bachelor's in Biomedical Engineering at Azad University
February 1, 2018 - December 1, 2022Master's in ITS Software Engineering at Azad University
September 1, 2023 - November 7, 2025Master's in IT Software Engineering at Azad University
September 1, 2023 - November 7, 2025Bachelor's in Biomedical Engineering at Azad University
February 1, 2018 - December 1, 2022Bachelor's in Biomedical Engineering at Azad University
February 1, 2018 - December 1, 2022Master's in IT Software Engineering at Azad University
September 1, 2023 - November 7, 2025Qualifications
Django Beginner to Advanced
May 1, 2023 - November 7, 2025Django Beginner to Advanced
May 1, 2023 - November 7, 2025Duolingo English Test
January 11, 2030 - November 7, 2025Duolingo English Test
January 11, 2030 - November 7, 2025Django Beginner to Advanced
January 11, 2030 - November 7, 2025Django Beginner to Advanced
January 11, 2030 - November 7, 2025Duolingo English Test
January 11, 2030 - November 7, 2025Industry Experience
Software & Internet, Professional Services, Media & Entertainment, Education, Telecommunications
Skills
See more
Experience Level
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
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