Pankaj Kalania
@pankajkalania
Backend developer specializing in Python, large-scale web scraping, and REST APIs—building reliable, monitored microservices.
What I'm looking for
I’m a backend-focused software developer who builds Python services that turn messy, high-volume web data into dependable APIs. In my current role, I drive end-to-end feature development in an IC capacity, engineer scraping systems that handle 100+ complex websites at scale, and add resilient anti-detection measures like proxy pool management and large-scale Google reCAPTCHA v3 solutions.
Previously, I built and maintained highly available Python/Flask web applications and optimized scraping services to cut response time by 60% while acquiring public data from 60+ platforms. I also design production-grade microservices with Docker and AKS/Helm, instrument performance with Prometheus + Grafana, and deploy machine learning services inside the microservices architecture. Earlier in my career as a Data Scientist and Data Engineer, I shipped real-time analytics and credit risk scorecards using AWS (S3, EC2, API Gateway, Lambda) and built Scrapy-based pipelines for large-scale public data, including GST-registered businesses in India.
Experience
Work history, roles, and key accomplishments
Software Developer II
Ownwell Inc
Aug 2024 - Present (1 year 9 months)
Drove end-to-end feature development for web scraping and Python backend, engineering high-volume scraping for 100+ complex websites at scale. Implemented anti-detection using proxy pool management and large-scale Google reCAPTCHA v3, and established microservice monitoring with Grafana/Prometheus/Loki.
Back End Developer
Sign3labs
Jan 2023 - Aug 2024 (1 year 7 months)
Developed and maintained highly available Python/Flask web applications with robust RESTful APIs. Architected and optimized scraping services to cut response time by 60%, collected data from 60+ platforms, and built microservices DevOps using Docker/AKS/Helm with Prometheus/Grafana monitoring plus production ML services.
Senior Data Scientist
Agrim Wholesale
Jan 2022 - Jan 2023 (1 year)
Engineered and deployed AWS data pipelines for real-time prediction and business analytics using S3, EC2, API Gateway, and Lambda. Built a credit risk scorecard for the SME segment from scratch and executed Scrapy-based scraping of GST-registered businesses to support underwriting and growth strategies.
Data Scientist
Avail Finance
Dec 2019 - Jan 2022 (2 years 1 month)
Developed a feature engine using alternate data sources to produce comprehensive financial and social risk profiles for customers. Built a LightGBM-based credit risk scorecard for the New to Credit (NTC) population, classifying customers into high- and low-risk groups.
Data Engineer Intern
Charmboard
May 2019 - Jun 2019 (1 month)
Built a Scrapy-based scraping engine to extract product information from e-commerce platforms including Amazon, Flipkart, and Shoppers-Stop. Designed the system to simplify onboarding new platforms through configuration changes.
Education
Degrees, certifications, and relevant coursework
Indian Institute of Technology Kharagpur
Master of Science, Mathematics & Computing
2015 - 2020
Completed an M.Sc. in Mathematics & Computing at IIT Kharagpur from 2015 to 2020.
Central Board of Secondary Education (CBSE)
Senior Secondary, Engineering Stream
2013 - 2015
Completed Senior Secondary education in the Engineering Stream under CBSE from 2013 to 2015.
Central Board of Secondary Education (CBSE)
Secondary Education, Secondary Education
2012 - 2013
Completed Secondary education under CBSE from 2012 to 2013.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Job categories
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