Mahboob Alam

Work Experience

Nov 2025 – Present

Fulltime

Drove technical trade-offs and approvals; balanced performance, reliability, and delivery risks while enforcing development and testing standards.
Led cross-border engineering teams in Bangladesh and India; planned sprints, delegated feature ownership, enforced code reviews and CI to ensure predictable delivery..
Owned system architecture and technical direction; defined domain boundaries, API standards, data contracts, and deployment approach to enable independent service delivery.
Authored comprehensive developer runbooks and system architecture diagrams, standardizing the onboarding process and reducing knowledge silos across distributed engineering teams.
Engineered the initial CI/CD pipelines using GitHub Actions, AWS and Docker, reducing deployment lead time from hours to minutes and enforcing automated testing gates for cross-border teams.

Nov 2023 – Nov 2025

Fulltime

Decoupled a monolithic codebase into modular services using Strategy and Factory patterns, significantly reducing code coupling and facilitating easier unit testing.
Optimized critical MySQL queries by implementing composite indexing, reducing query execution time by 17% and supporting low-latency analytics for 50+ concurrent vendor stores.
Redesigned the AWS infrastructure by migrating idle resources to reserved and spot instances and implementing auto-scaling policies, resulting in a 40% reduction in monthly cloud costs.
Overhauled the authentication module by implementing OAuth2 and JWT with role-based access control (RBAC), eliminating common security vulnerabilities and streamlining the user login flow.

Oct 2022 – Oct 2023

Freelance

Conducted bottleneck analysis and optimized legacy database queries through indexing and query-set optimization, achieving measurable improvements in system stability and reducing average API response times.
Developed and documented production-ready RESTful APIs using Django Rest Framework (DRF), incorporating secure authentication patterns and efficient serialization logic to minimize payload sizes and latency.
Architected robust background task pipelines using Celery and Redis to handle resource-intensive operations (automated reporting, transactional emails), significantly improving frontend responsiveness by offloading non-blocking tasks.
Engineered custom Django backends for diverse client projects, implementing PostgreSQL/MySQL schemas designed for high data integrity and scalability across web and mobile platforms.

March 2024 - June 2024

Django, DRF, RabbitMQ, Docker, PostgreSQL, MongoDB, AWS, Portainer, Container Security, Microservices

A microservices solution for DSA problem solving platform backend just like Leetcode built from scratch without any 3rd party solution.

Architected a loosely coupled backend comprising Auth, API Service, and RCE service, communicating via asynchronous message queues (RabbitMQ) to handle high-concurrency submission spikes without blocking.
Engineered a custom C++ Judge (Remote Code Execution) that spins up ephemeral Docker containers for each submission, isolating user code from the host OS to ensure security.
Implemented kernel-level constraints (using Docker Runtime options) to strictly limit CPU, Memory, and PIDs, effectively preventing malicious attacks like fork-bombs and infinite loops.
Built the orchestration layer to manage the lifecycle of code submissions, from queuing and execution to result validation (AC/WA/TLE), achieving a sub-2.5s turnaround for standard problem sets.

Sept 2024 - Nov 2024

Django, AWS S3, EC2, Translate, Gcore CDN, Flower, Elasticsearch, Nginx, Gunicorn, Cloudflare, Celery, FFmpeg, Docker

A scalable microservices solution for video on demand platform with closed caption, DRM and data protection need just like YouTube.

Architected an event-driven video processing pipeline using Celery and RabbitMQ, offloading resource-intensive transcoding tasks (FFmpeg) from the main thread to prevent blocking.
Implemented MPEG-DASH and HLS protocols with multi-bitrate transcoding, ensuring smooth playback across varying bandwidths and reducing client-side buffering events.
Fully containerized the microservices architecture using Docker, ensuring consistent runtime environments across development and production stages.
Secured video assets using DRM (PlayReady) and optimized global delivery via CDN caching, reducing origin server load and improving Time-To-First-Byte (TTFB) by 40%.

Oct 2023 – Dec 2023

Django, Django Rest Framework, React, PostgreSQL, WebSocket, Route53, AWS

Live streaming solution for low latency video game streaming just like Twitch.

Engineered a Twitch-inspired streaming backend utilizing the Agora SD-RTNTM (Software Defined Real-time Network) to deliver low-latency, one-to-many broadcasts with high throughput and global availability.
Implemented a robust security layer by building a Dynamic Token Server in Django, generating time-bound, HMAC-signed access tokens for Agora channels to prevent unauthorized stream access and stream sniping.
Architected a high-concurrency chat interface using Django Channels (WebSockets) and Redis Pub/Sub, managing real-time viewer interaction and metadata syncing (viewer counts, stream status) outside the media stream.