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Zain Bajwa

@zainbajwa1

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I’m a Senior Python & AI Engineer building scalable, cloud-native backend systems and LLM-powered applications.

Pakistan

Message

What I'm looking for

I’m looking for a role where I can build production AI (RAG/agents) and scalable cloud-native backends, own system design end-to-end, and collaborate in a fast-paced, remote-first environment—using strong engineering practices and measurable performance improvements.

I’m a Senior Python & AI Engineer with 6+ years of experience designing, building, and scaling cloud-native backend systems, distributed architectures, and AI-powered applications. I focus on production-grade performance—developing high-performance APIs, scalable SaaS platforms, and AI features like RAG and agentic workflows.

I’ve built and deployed AI applications using OpenAI, LangChain, RAG, and agentic AI architectures, improving retrieval accuracy and response quality while reducing operational effort by up to 70%. I’ve also designed scalable backend systems supporting 100K+ users with 99.9% uptime, and reduced API response times by up to 60% through caching, query optimization, and distributed system improvements.

In cloud and platform work, I’ve led AWS-based deployments and migrations using Docker, Kubernetes, Terraform, and CI/CD pipelines—cutting deployment times by up to 60%. I’m comfortable across the stack when needed (FastAPI/Django/REST APIs, GraphQL, async processing with WebSockets and Celery, and React frontends), and I bring strong engineering discipline through testing (PyTest), clean architecture practices, and mentoring junior engineers through code reviews and best practices.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Development Engineer

Current

Knowa Tech

Apr 2023 - Present (3 years 2 months)

Architected and delivered AI-powered applications using Python, FastAPI, OpenAI, and LangChain, reducing manual operational effort by up to 70%. Built scalable microservices and optimized REST APIs (40% faster responses) to support 50K+ daily requests and achieve 99.9% uptime, while reducing deployment time by 60% using Docker, Kubernetes, and CI/CD pipelines.

Python fastAPI OpenAI Lang Chain Retrieval Augmented Generation (RAG)Microservices Redis AWS Docker Kubernetes

Full Stack Developer

GreeLogix

Led end-to-end development of cloud-native applications using Python, Django, React, and AWS, delivering high-availability backend systems for 124K+ monthly active users with 99.9% uptime. Optimized PostgreSQL/MySQL performance (query tuning, indexing, Redis caching) and implemented a microservices-oriented architecture with Docker and CI/CD automation to improve scalability and deployment velocit

Python Django React AWS REST APIs PostgreSQL MySQL Redis Docker CI CD

Associate Software Engineer

Samaritan Technologies

Designed and optimized ETL pipelines, data-processing workflows, and distributed microservices, reducing manual data handling by 60% and improving system efficiency. Developed high-performance REST APIs and real-time integration services (35% improved responsiveness) and automated testing to support secure, scalable AWS/Azure deployments for healthcare-compliant backend systems.