# Khandker Maksudul Haque

> Software Engineer specializing in backend development and infrastructure with Python, Django, and AWS. Maintainer of Django Packages, open-source contributor (Read the Docs, Ruff), and Google Summer of Code 2019 alum. Based in Dhaka, Bangladesh; works remotely.

- Name: Khandker Maksudul Haque (GitHub handle: saadmk11)
- Role: Software Engineer — Backend & Infrastructure
- Current employer: Neliti (Singapore, remote), August 2021 – present
- Location: Dhaka, Bangladesh (open to remote opportunities)
- Email: saad.mk112@gmail.com
- Website: https://profile.maksudul.bd
- Résumé (PDF): https://profile.maksudul.bd/khandker-resume.pdf

## About

Khandker Maksudul Haque is a software engineer focused on backend development and infrastructure using Python, Django, and AWS. At Neliti he works on backend services, CI/CD automation, and production deployments. He is one of the maintainers of Django Packages and contributes to open-source projects such as Read the Docs and Ruff, helping improve tools used by developers worldwide.

## Skills

- Languages: Python, JavaScript, Rust
- Backend & APIs: Django, Django REST Framework, FastAPI, Celery, Django-Q
- Data & Messaging: PostgreSQL, Redis, Memcached, RabbitMQ, Elasticsearch
- Cloud & DevOps: AWS (ECS, Lambda), Docker, GitHub Actions, CI/CD
- Tooling & Testing: Git, uv, mypy, pytest
- Payments & Integrations: Stripe, Square, Razorpay, Paytm, OAuth2, Crossref, Matomo

## Experience

### Software Engineer — Neliti Pty Ltd (Singapore, Remote) · Aug 2021 – Present
Neliti is Indonesia's largest research repository.
- Migrated infrastructure to AWS ECS, reducing costs by 25%.
- Automated deployments with GitHub Actions, enabling zero-downtime releases.
- Implemented PDF compression via AWS Lambda, reducing server load by 15% and cost by 5%.
- Built a custom domain service allowing customers to serve content from their own domains automatically.
- Revamped dependency management using pip-tools and GitHub Actions, removing 90% of manual work.
- Developed API v2 with role-based permissions using Django REST Framework.
- Integrated and automated DOI (Digital Object Identifier) registration using Crossref.
- Implemented an Elasticsearch-based search engine for searching articles.
- Fixed memory leaks and thread-safety issues, pushing a patch to an upstream open-source package.
- Integrated Stripe global payouts for international affiliate payments.

### Software Developer — The SmartLabs (India, Remote) · Jan 2018 – Jul 2021
- Built diagnostic test booking and online payment systems using PayTM and RazorPay.
- Developed e-commerce platforms for pet products with online payment and customer notifications.
- Integrated shipment providers for product tracking, eliminating 95% of manual work.
- Implemented REST APIs with Django REST Framework for mobile applications.
- Migrated legacy codebases from Python 2.7 to 3.6.

### Google Summer of Code Developer — Read the Docs (United States, Remote) · May 2019 – Aug 2019
- Architected a CI system for documentation builds on Pull Requests.
- Developed features to build documentation on PR creation and send status notifications to GitHub/GitLab APIs.
- Project blog post: https://blog.readthedocs.com/building-docs-for-pull-requests/

## Open Source Contributions

- Django Packages (Maintainer) — https://github.com/djangopackages/djangopackages — Migrated legacy templates to Tailwind CSS; eliminated N+1 queries and added caching, cutting database load by 4M+ queries/month; upgraded to Python 3.11 and Django 5; replaced cron jobs with Django-Q; migrated to psycopg3 with native pooling; implemented PostgreSQL Full-Text Search.
- Read the Docs (Contributor) — https://github.com/readthedocs/readthedocs.org — Database normalization affecting millions of rows; improved Elasticsearch index/search performance by 15%; unified Django settings; developed API v3 endpoints and filters.
- Ruff (Contributor) — https://github.com/astral-sh/ruff — Implemented linter rules for plugins including flake8-bandit, isort, flake8-self, and pygrep-hooks.
- django-elasticsearch-dsl (Contributor) — https://github.com/django-es/django-elasticsearch-dsl — Migrated test suite from TravisCI to GitHub Actions; implemented Django signals.
- djangoproject.com (Contributor) — https://www.djangoproject.com — Improved page performance by optimizing database queries.

## Projects (authored)

- Changelog CI — https://github.com/saadmk11/changelog-ci — GitHub Action that automatically generates changelogs from merged pull requests or commit messages.
- GitHub Actions Version Updater — https://github.com/saadmk11/github-actions-version-updater — GitHub Action that updates all GitHub Actions in a repository and opens a Pull Request.
- django-newsfeed — https://github.com/saadmk11/django-newsfeed — Django package to create a news curator and newsletter subscription application.
- redis-search-django — https://github.com/saadmk11/redis-search-django — Django package providing auto indexing and search for Django models using RediSearch.
- drf-test-generator — https://github.com/saadmk11/drf-test-generator — Generates unittest and pytest style tests for Django REST Framework ViewSets.
- python-third-party-imports — https://github.com/saadmk11/python-third-party-imports — Python CLI tool (written in Rust) that finds all third-party packages imported in a Python project.

## Education

- Bachelor of Computer Science and Engineering — International University of Business Agriculture & Technology (Bangladesh), May 2018 – Apr 2022. CGPA: 3.70 / 4.00.

## Writing

- Blog: https://blog.maksudul.bd
- Dev.to: https://dev.to/saadmk11
- GSoC 2019: Autobuild Documentation for Pull Requests — https://blog.readthedocs.com/building-docs-for-pull-requests/
- Build a Python CLI Tool with Rust — https://blog.maksudul.bd/posts/build-python-cli-tool-with-rust/
- Django Database Connection Pooling with PgBouncer — https://blog.maksudul.bd/posts/django-postgresql-database-connection-pooling-with-pgbouncer/
- Sorting Strategies for Optional Fields in Django — https://blog.maksudul.bd/sorting-strategies-for-optional-fields-in-django/

## Links

- GitHub: https://github.com/saadmk11
- LinkedIn: https://www.linkedin.com/in/saadmk11/
- X (Twitter): https://x.com/saad_mk11
- Mastodon: https://fosstodon.org/@saadmk11
- Dev.to: https://dev.to/saadmk11
- Blog: https://blog.maksudul.bd