Mehran Shabani - Software Engineer

Professional Summary

Software engineer with +7 years of experience specializing in backend systems, mobile development, and developer tooling. Proficient in building high-performance Rust backends with Axum, native iOS applications with SwiftUI, and Android applications with Kotlin. Extensive experience with PostgreSQL schema design, microservices architecture, and DevOps practices. Currently developing internal tools and platforms at Telegram while maintaining production systems serving thousands of users.

Technical Skills

Languages: Rust, Kotlin, Swift, TypeScript, Java, C, Python, Bash

Mobile Development: SwiftUI, UIKit, Kotlin Multiplatform, Jetpack Compose, MSAL Authentication

Backend: Rust (Axum, Tokio, Diesel), Node.js, Express.js, RESTful API Design, GraphQL

Databases & Infrastructure:

SQL: PostgreSQL, MySQL (Complex queries, schema design, migrations, indexing, performance optimization)

NoSQL: MongoDB, Redis

Containerization & Orchestration: Docker, Docker Compose, Kubernetes

CI/CD: GitHub Actions, Jenkins

Cloud Services: Oracle Cloud, DigitalOcean, AWS

Monitoring: Prometheus, Grafana, custom logging solutions

Developer Tools: Git, Xcode, Android Studio, Visual Studio Code, Postman, Cargo

Architecture: Microservices, RESTful APIs, WebSocket protocols, Authentication systems (OAuth, MSAL, JWT)

Work Experience

Software Developer & QA Engineer

Sep 2019 - Present

Telegram Messenger

Developer Tooling: Built comprehensive internal bug tracking platform using Next.js and TypeScript for bugs.telegram.org, serving as primary client within Telegram Mini-Apps ecosystem
Architected multi-role authentication system supporting Admin, Moderator, and User hierarchies with granular permission controls
Implemented real-time bug tracking features including comment threads, subscription management, and advanced filtering capabilities
Developed automation infrastructure using Node.js for continuous testing and monitoring of client applications
Maintained and enhanced bot systems to track development commits and integrate with internal workflows
Designed and implemented CI/CD pipelines using GitHub Actions and Jenkins for zero-downtime deployments
Established centralized logging and monitoring infrastructure with custom alerting systems
Managed Kubernetes clusters for scalable bot infrastructure and internal tools
Collaborated with development team on feature planning and implementation strategy
Conducted security testing for pre-release applications to prevent vulnerabilities

Mobile & Backend Developer

Jan 2024 - Present

Medipol University Portal Project

iOS Development: Architected comprehensive university portal app using SwiftUI with modern iOS patterns and MVVM architecture
Integrated Microsoft Azure Active Directory authentication using MSAL framework with secure keychain storage
Built feature-complete student management system including academic records, exam scheduling, QR-based attendance, and interactive campus mapping with MapKit
Implemented advanced UI components including custom tab bars with scroll-based animations, bottom sheets with gesture handling, and comprehensive dark/light theme system
Android Development: Developed parallel Android application using Kotlin and Jetpack Compose with Material Design 3
Created unified authentication flow across both platforms with session management and token refresh logic
Backend Development: Built robust Rust backend using Axum framework for high-performance API endpoints
Designed comprehensive PostgreSQL schema with proper entity relationships, foreign keys, and indexing strategies
Implemented efficient query optimization techniques reducing response times by 60% for complex academic data retrieval
Architected RESTful API with proper error handling, request validation, and rate limiting
Set up database migration system using Diesel ORM for version-controlled schema changes
Configured automated backup systems and implemented database replication for high availability

Backend Developer Intern

Aug 2024 - Sept 2024

Tübitak BİLGEM

Developed internal room reservation system backend using Spring Boot and PostgreSQL
Designed database schema with complex relational structures for room availability and booking management
Implemented RESTful API endpoints with proper authentication and authorization
Optimized database queries achieving 70% performance improvement on high-traffic endpoints
Integrated real-time notification system for booking confirmations and updates

Notable Projects

Star Cipher - Visual Steganography Tool

May 2024

Cryptography & Systems Programming

Developed innovative steganography application in C that encodes text messages within star constellation patterns in images
Implemented custom encryption algorithm with password-based cipher, hash functions, and PRNG for cryptographic security
Built comprehensive image processing pipeline:

BMP encoding/decoding with embedded metadata structures
JPEG/PNG decoding with adaptive brightness detection algorithms
Lossy compression tolerance using intelligent threshold analysis

Designed modular CLI with comprehensive argument parsing and validation
Integrated stb_image library for cross-platform image format support
Implemented format-specific detection and optimization algorithms for various image types
Created cross-platform build system with automated GitHub Actions CI/CD pipeline

https://github.com/meh7an/star-cipher

Gifts App - E-commerce Mini-App

Oct 2024 - Nov 2024

Full-Stack Development

Built production-ready Telegram Mini App using TypeScript for both frontend and backend
Architected scalable MongoDB schema for gift transactions with complex relational queries
Integrated Crypto Pay payment system with secure transaction handling and validation
Developed Grammy-based Telegram bot for automated notifications and user engagement
Implemented comprehensive monitoring infrastructure:

Prometheus metrics collection with custom exporters
Automated alerting via Telegram API with vector visualizations
Performance tracking and bottleneck identification

Configured MongoDB replication cluster with automated backup procedures
Set up CI/CD pipeline with automated testing and deployment strategies
Implemented auto-scaling policies based on real-time user load metrics

https://github.com/meh7an/giftapp-client | https://github.com/meh7an/giftapp-server

Teleminal - SSH Terminal Mini-App

Mar 2024

Systems Programming & Security

Built SSH terminal interface integrated with Telegram Mini-App platform using vanilla JavaScript
Awarded 3rd place in Telegram's 2023 Mini-Apps contest for innovation and implementation
Configured secure SSH tunneling infrastructure with per-user certificate management
Implemented comprehensive security measures:

Session isolation using containerization
Resource usage limits and quota enforcement
Fine-grained access control policies
Automated security patch management

Configured Nginx reverse proxy for WebSocket connections with SSL termination
Set up monitoring dashboards for session metrics, resource usage, and system health
Implemented automated vulnerability scanning and patch deployment pipeline

https://github.com/meh7an/Teleminal

Quoridor Duo - Multiplayer Board Game

May 2024

Real-Time Systems

Developed real-time multiplayer board game using Socket.io for game state synchronization
Implemented object-oriented game logic in vanilla JavaScript with efficient state management
Configured WebSocket clustering for horizontal scalability across multiple server instances
Set up automated deployment pipeline with zero-downtime updates
Implemented comprehensive rate limiting and DDoS protection mechanisms
Built performance monitoring system tracking concurrent connections and game state updates

Education

BSc. in Computer Engineering

Sept 2022 - Present

Istanbul Medipol University, Türkiye

Currently studying - GPA: 3.8

Medicine

Sept 2015 - Mar 2021

Zanjan University of Medical Sciences, Iran