Python Backend Engineer (Django/FastAPI)

Yakub Jesawada

Python Backend Engineer *+ Years Django · FastAPI · AWS · PostgreSQL ·

LLM Integrations

Building scalable APIs, async pipelines, and AI-integrated backend systems Email *************.********@*****.*** Phone +91-820******* GitHub github.com/Yakub-Jesawada LinkedIn linkedin.com/in/yakub-jesawada Professional Experience

•Software Engineer – Backend Developer (Systems & APIs) (SDE-3) Jun 2023 – Present Exlitem

Promoted from SDE-1 SDE-2 (Apr 2024) SDE-3 (Apr 2026) — backend ownership, technical leadership, and system-level contributions.

– Built an asynchronous document processing pipeline using Apache Kafka, AWS Textract, and PostgreSQL (pgvector), processing 30,000+ documents with a 30% reduction in processing time.

– Designed and maintained production backend services using Python, Django, and FastAPI, serving high-traffic endpoints with async/await and non-blocking I/O.

– Modeled and validated API contracts using Pydantic with full OpenAPI documentation; maintained REST API consis- tency across multiple services.

– Implemented unit and integration tests using pytest integrated into CI/CD pipelines, reducing regression bugs.

– Designed modular service architectures following SOLID principles; implemented centralized error handling, structured logging, and retry mechanisms for production reliability.

– Integrated Stripe payment flows and built fault-tolerant email delivery systems with queue-based failover.

– Deployed services using Docker and CI/CD pipelines; managed containerized environments for consistent releases.

– Led end-to-end legacy database migration to a new application DB, owning schema mapping, data integrity validation, and zero-downtime cutover strategy.

– Leveraged Claude Code for rapid feature development, bug fixes, and PR reviews; drove delivery velocity while maintaining SDE-3-level code quality and design standards.

– Contributed to frontend integration using Next.js and Nuxt.js, connecting backend APIs to UI layers.

•Backend Developer Intern Mar 2023 – May 2023

Offshore Research Partner

– Built secure REST APIs using Django REST Framework (DRF).

– Developed Selenium-based web scraping pipelines for automated data collection.

– Designed and maintained Apache Airflow DAGs for pipeline scheduling and monitoring. Projects

•AI Document Processing Platform

FastAPI · Kafka · AWS Textract · S3 · Hugging Face · pgvector · PostgreSQL · LangChain GitHub

– Built an end-to-end async document ingestion pipeline using Kafka for event streaming, AWS Textract for OCR extraction, and AWS S3 for document storage.

– Generated semantic embeddings using Hugging Face (sentence-transformers/all-MiniLM-L6-v2); stored and queried vectors in PostgreSQL (pgvector) for similarity search.

– Implemented document chunking using LangChain (RecursiveCharacterTextSplitter, TokenTextSplitter) for context- aware retrieval.

– Architected for scale with decoupled Kafka producers/consumers, retry queues, and dead-letter handling.

•Invoice & Quotation Generator

Django · PostgreSQL · Django REST Framework · PDF Generation GitHub

– Built a full-featured invoicing system with dynamic PDF generation, client management, and payment tracking.

– Designed normalized PostgreSQL schema with audit logging and status lifecycle management.

– Exposed REST API endpoints with role-based access control and DRF serializers. Technical Skills

Languages: Python, JavaScript, Scala

Backend & APIs: Django, Django REST Framework, FastAPI, Flask, asyncio, Pydantic, OpenAPI Databases: PostgreSQL (schema design, indexing, query optimization, pgvector), MySQL, MongoDB Cloud & DevOps: AWS (Textract, S3, Glue, EMR, Athena), Docker, CI/CD, Git Messaging & Async: Apache Kafka, Celery, Airflow, background task processing AI & LLM: LangChain, Hugging Face (sentence-transformers), OpenAI API, prompt engineering, vector search (pgvector) AI-Native Dev Tools: Cursor, Windsurf, Claude Code Big Data: Apache Spark (PySpark, Scala), Hadoop, Hive, AWS Glue, EMR Testing: pytest, unit testing, integration testing, test automation Other: Stripe integration, Selenium, web scraping, observability & logging Education

•Bachelor of Technology in Computer Science and Engineering 2019 – 2023 Government Engineering College, Dahod CGPA: 7.98

Certifications

•Big Data Master’s Program Feb 2025

TrendyTech by Sumit Mittal – Spark, PySpark, Hadoop, Hive, AWS (Glue, EMR, Athena)

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