Open to opportunities

Hafijur Rhaman

@hafijurrhaman

Message

I've built Django, React, and ML products for enterprise and multi-tenant SaaS teams.

United States

Message

What I'm looking for

I'm looking for Senior Python, Full Stack, or Applied ML roles on teams shipping data-heavy product. I value meaningful product surface, real data, strong engineering culture, and opportunities to build Django/React platforms and production ML capabilities.

I've built data-driven platforms across CitiGroup, Cisco, Verizon, United Airlines, Infosys, and Pypes LLC. At Pypes, I architected a multi-tenant Django and React marketing-automation platform with CRM, email, and ad-network integrations.

I embed ML and LLM capabilities directly into products, including lead scoring, content classification, copy generation, and an insurance-claimant behavioral classifier using random forests and decision trees. My applied ML work spans TensorFlow, PyTorch, Scikit-learn, NLP, computer vision, and production data pipelines.

At CitiGroup, I led Python developers building a Django FX dashboard and REST APIs for a global banking transaction system, while optimizing PostgreSQL and MySQL schemas. I've also shipped AWS services with Docker, Kubernetes, Jenkins, and GitHub Actions, including zero-downtime releases.

I'm strongest where real product, real data, and reliable Python systems meet—building backend services, full-stack interfaces, and ML-enabled SaaS experiences.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Pypes LLC

May 2024 - Present (2 years 3 months)

Architected a multi-tenant lead-generation and marketing-automation platform on Python/Django with React, integrating CRM, email, and ad-network APIs. Embedded ML and LLM features such as lead scoring and content classification into client products.

Python Django React AWS Docker GitHub Actions CI CD Machine Learning LLM Lead Scoring Content Classification Copy Generation

Software Engineer

CitiGroup

Oct 2022 - Dec 2023 (1 year 2 months)

Built an international currency exchange dashboard for a global banking transaction system. Led a team of Python developers, developed RESTful APIs, optimized PostgreSQL and MySQL schemas, and implemented data processing pipelines.

Python Django REST APIs PostgreSQL MySQL Pandas NumPy Team Leadership Code Review

Python Developer

Infosys

Aug 2019 - Sep 2022 (3 years 1 month)

Designed and implemented backend architecture including database interactions and API integrations. Developed ML classifiers for insurance claimants using random forests and decision trees, and built Django forms, models, views, and templates.

Python Django MySQL MongoDB Jenkins Angular Machine Learning Random Forest Decision Trees Shell Scripting

Python Developer

Cisco

Apr 2018 - Jul 2019 (1 year 3 months)

Built applications on the Cisco DNA Center platform using Intent APIs, wrote Python backend modules and shell scripts for data mining, and deployed services on AWS with Jenkins, Docker, and Kubernetes.

Python Shell Scripting AWS Jenkins Docker Kubernetes Data Mining

Python Developer

Verizon Data Services

Feb 2017 - Mar 2018 (1 year 1 month)

Extended the CAAS tool addressing underutilized resources, chargebacks, and customer complaints. Built Django and PostgreSQL MVC modules, used Pandas for time-series pipelines, and automated data movement and validation.

Python Django PostgreSQL Pandas AWS HTML CSS AJAX JavaScript jQuery

Python Developer

United Airlines

Jun 2016 - Jan 2017 (7 months)

Built passenger information management modules in Python and Django, integrated SQLAlchemy with MySQL, and wrote multi-threaded scripts for performance-critical paths.

Python Django SQLAlchemy MySQL JavaScript AJAX