Muhammad Mairaj | Full-Stack Engineer

Background

Experience

Full-Stack Engineer

Sapu @ Universiti Malaya Current

University-based ride-hailing platform · 10K+ users · Kuala Lumpur

Mar 2025 – Present

Scaled platform from 100 → 500+ concurrent trips and 1.5K+ daily orders by implementing PgBouncer connection pooling, optimising PostgreSQL queries, introducing Celery async processing, and validating gains with Locust stress testing, all deployed via Docker, monitored with Prometheus and Grafana.
Led end-to-end multi-campus expansion across a 3-dev team: authored 149 tests over 42 endpoints, managed 4 sprint iterations via GitHub Projects, and executed a phased rollout (feature validation → zone testing → cross-university UAT), delivering 1 week ahead of schedule and expanding to 2 universities within 2 weeks.

DjangoPostgreSQLPgBouncer CeleryDockerPrometheus GrafanaLocust

Part-Time Full-Stack Developer

EB Tech Malaysia

Software development consultancy · Malaysia

Sep 2025 – Jan 2026

Developed FastAPI microservices with end-to-end type safety (Pydantic schemas to TypeScript client) and a unit test suite integrated into a GitHub Actions CI/CD pipeline with staged production deployments.
Built cross-service OAuth2/OIDC SSO infrastructure unifying authentication across a multi-role platform, and automated client report generation with a Jinja2-based PDF engine, eliminating manual reporting effort.

FastAPIPydanticTypeScript OAuth2OIDCGitHub ActionsAgile

Lab Demonstrator: Network Technology Foundations

Universiti Malaya

Kuala Lumpur

Mar 2025 – Jul 2025

Facilitated lab sessions on TCP/IP, routing protocols, subnetting, and network security fundamentals for undergraduate students.
Applied networking theory directly to production infrastructure work at Sapu: Nginx reverse proxying, Docker networking, and SSL/TLS certificate management.

TCP/IPNetworkingNginxSSL/TLS

Lab Demonstrator: Fundamentals of Programming

Universiti Malaya

Kuala Lumpur

Oct 2024 – Jan 2025

Guided students through Java programming fundamentals, OOP principles, algorithm design, and debugging techniques.
Deepened own Java expertise through teaching, applied in Android development (FarmerPal) and desktop GUI projects (NBA Game Manager).

JavaOOPAlgorithms

Work

Projects

FYP AI In Progress

↗ isvms.duckdns.org

VisaSystem

Final Year Project. Full-stack visa management system for Universiti Malaya, designed around multi-actor RBAC (Student, Visa Staff, Faculty, Insurance), event-driven background job workflows, and a REST API architecture. Augmented with an AI-powered RAG chatbot for Level 1 visa inquiries and OCR-based passport data extraction.

RAG Chatbot AI OCR RBAC Background Jobs UAT Unit + Integration Tests

FastAPIReactPostgreSQL ARQ / RedisLLM / RAG

Production

↗ sapu-my.com

Sapu

University-based ride-hailing platform for Universiti Malaya, scaled to 10K+ users across 2 campuses. As Full-Stack Engineer, scaled from 100 to 500+ concurrent trips via PgBouncer connection pooling, Celery async processing, and PostgreSQL query optimisation. Led multi-campus expansion: 149 tests over 42 endpoints, phased rollout delivered 1 week ahead of schedule.

10K+ users 500+ concurrent trips 149 tests / 42 endpoints 2 universities

DjangoPostgreSQLPgBouncer CeleryDockerPrometheusGrafana

Production Web + Mobile

↗ khshawarma.org

KH Shawarma POS System

Real-time restaurant ordering and management system for KH Shawarma, Engineering Faculty UM. Supported ~1,000 daily orders within 2 months. Built as Co-Lead Backend Engineer and Lead Security Engineer in a 5-person team, delivering a customer web app and a React-Native kitchen POS Android app.

WebSocket real-time orders Kitchen POS App Security hardening ~1K daily orders

MongoDBExpressReact Node.jsReact-NativeWebSockets

AI In Progress

↗ GitHub

DevTrackr

Developer productivity platform that auto-generates professional logbooks by syncing Toggl time tracking entries with GitHub commit/PR activity, then producing AI-powered daily and weekly work summaries via a provider-agnostic LLM interface (Gemini API implemented).

Gemini API summaries GitHub integration Toggl sync Provider-agnostic LLM

FastAPIReactTypeScript PostgreSQLGemini APIDocker

Live ↗ iftaar-coord.netlify.app

Iftaar Coordination App

Mobile-first bilingual (English/Arabic) platform coordinating Ramadan iftar donations between mosques and restaurants. RTL support, Supabase auth, server actions.

Next.js 14SupabaseTailwindi18n

Research Web + Mobile

Hentian Komuniti

Community-focused platform delivered within a Universiti Malaya research timeline. Led 2-dev team, managed client comms, defined architecture, and deployed a zero-cost production backend.

SupabasePostgreSQLRealtime

Live ↗ mmscheduler.netlify.app

MMScheduler

Timetable visualiser for Universiti Malaya students, all courses in English with lecturer names. Scraped and processed with Selenium.

Next.jsReactPythonSelenium

AI / ML ↗ GitHub

Memecoin Analysis Dashboard

Interactive Streamlit dashboard analysing memecoin trends with ML-based sentiment analysis and price movement predictions from social media and search data.

PythonStreamlitScikit-learnPandas

Android ↗ GitHub

FarmerPal

Android app supporting SDG 2: Zero Hunger, empowering farmers with community posts, disease/crop info, and agricultural support chat features.

JavaAndroid StudioFirebase

Freelance ↗ GitHub

Material Calculator v2

Desktop application for a local steel production factory that calculates optimal raw material quantities for steel production runs.

PythonTkinter

Toolkit

Skills

Languages

Python JavaScript / TypeScript Java SQL C

Backend

Django FastAPI Node.js Express Flask

Frontend

React Next.js React Native Tailwind CSS

Databases

PostgreSQL Redis MongoDB Firebase

DevOps & Infra

Docker GitHub Actions PgBouncer Celery Prometheus Grafana Nginx Linux / Unix

AI / ML

Gemini API RAG LLM Integration Scikit-learn TensorFlow Pandas Streamlit

Concepts

REST APIs WebSockets System Design Software Architecture Agile / Scrum OAuth2 / OIDC CI/CD

Recognition

Achievements

1st

Programming League National 2024

May 2024 · Solved 4/8 problems, more than any other finalist team

2nd in Malaysia

IEEEXtreme 18.0

Oct 2024 · 24-hour extreme competitive programming competition

5th

CodeNection National 2024

Dec 2024 · 167 teams across Malaysia

🎓

Dean's Award

CGPA 3.95 / 4.00 · Universiti Malaya

Credentials

Certifications

Harvard University

CS50x

Introduction to Computer Science

C (memory management, pointers, hash tables/tries) Python / Flask SQL JavaScript

MITx

6.00.1x

Intro to Computer Science & Programming

Python Algorithmic Thinking Computation Testing & Debugging

Cisco

Introduction to Networks

Cisco Networking Academy · CCNA

TCP/IP IP Addressing & Subnetting Routing & Switching Network Security

Udemy

Automate the Boring Stuff

Automate the Boring Stuff with Python

Python Scripting File & PDF Automation Web Scraping Regex Task Scheduling GUI Automation

Academic

Education

Bachelor of Computer Science (Software Engineering)

Universiti Malaya (UM) · Kuala Lumpur, Malaysia

Oct 2023 – Mar 2027

3.95

CGPA · Dean's Award

Relevant Coursework

Data Structures & Algorithms Software Modelling Mobile App Development Database Management Network Communications Software Architecture & Design

Languages

English (IELTS 8.0) Arabic (Intermediate) Urdu (Native) Malay (Learning)

Get in touch

Contact

Open to full-stack and backend engineering roles. Reach out via any channel below.

✉ Email muhd.mairaj2003@gmail.com </> GitHub github.com/Muhd-Mairaj in LinkedIn muhd-mairaj-4b194b294