Khawaja Bilal Uddin — Senior Full Stack Developer

Open to opportunities · Frankfurt, DE

Khawaja
Bilal Uddin

Senior Full Stack Developer · 6+ years

Building scalable backend systems and event-driven architectures with .NET, Node.js, and cloud-native tools. Currently crafting JobVault — an AI-powered job application pipeline.

🚀 View JobVault ↗ GitHub

Years exp

3B+

Orders/yr

3M+

Users

Software engineering

Germany

Portfolio / learning

Tech Stack

Backend

.NET 9 / C# Node.js Python Django ASP.NET Core

Frontend

Vue.js 3 React TypeScript Angular Next.js

Databases

MongoDB PostgreSQL SQL Server Redis DynamoDB

Messaging & Cloud

RabbitMQ Azure AWS Docker SignalR

AI Tools

GitHub Copilot Claude Playwright Claude API

Certifications

MSCS — Bahria Uni AZ-204 (pursuing) IELTS C1 German B1

Featured Project

⚡

JobVault — AI-Powered Job Application Pipeline

An end-to-end automated job application system. Claude AI generates tailored CVs and cover letters, pushes to GitHub via Tree API, triggers a .NET webhook pipeline, upserts MongoDB, fires RabbitMQ events, and delivers real-time Vue.js notifications and Telegram alerts.

↗ jobvault.kbilaluddin.dev ⚙ github.com/k-bilaluddin/job-applications-vault

Architecture flow

Claude AI generates 6 application files

↓

Git Tree API — single commit to GitHub

↓

GitHub webhook → JobVault.API (.NET 9)

↓

MongoDB upsert + RabbitMQ event fired

↓

Vue.js SignalR + Telegram notification

Stack used

.NET 9 Vue.js 3 RabbitMQ MongoDB GitHub API SignalR Cloudflare Telegram Bot Pinia Claude AI

Experience

Feb 2026
Present

JobVault — Independent Project

kbilaluddin.dev · Frankfurt, DE

Built a .NET 9 clean-architecture API with MongoDB and RabbitMQ event-driven workflows for automated job application tracking
Implemented a GitHub webhook pipeline — Claude AI generates application files, Git Tree API commits them, the API upserts MongoDB and fires RabbitMQ events
Built a Vue 3, Vite, TypeScript, and Pinia frontend for managing applications, interviews, statuses, and notes
Delivered real-time notifications via SignalR to the Vue frontend and Telegram bot alerts for mobile

Oct 2025
Jan 2026

Software Engineer

Calvergy UG · Aachen, DE · Remote

Built core features of a digital-twin energy optimization platform using Python/Django, Node.js, and React.js, enabling simulation of 10+ thermal and electrical assets
Improved the Linear Programming optimization engine and API integration, fixing solver bugs and boosting model-API performance by ~30%
Delivered dynamic, config-driven React.js UI components reducing scenario setup time by ~20%
Delivered the full-stack contract engagement across Django backend, Node.js services, and React frontend within a 3-month timeline

Jan 2023
Jan 2025

Senior Software Developer

Bari's Technology · Karachi, PK

Engineered .NET 8 microservices and REST APIs powering enterprise SaaS shipping platforms processing 3B+ annual orders and 90M+ peak transactions
Migrated legacy SOAP services to ASP.NET Core Web APIs, reducing system errors by 20%
Designed configurable shipment-routing logic using 16+ shipment attributes and region-specific rules across US, GB, EU, CA, and international workflows
Optimized SQL Server queries and ETL pipelines, improving backend and data-processing performance by ~30%
Architected file-processing workflows using AWS Lambda and S3, offloading document workloads and reducing API response times by ~25%
Developed React.js frontends integrated with ASP.NET Core backend services for enterprise logistics platforms
Developed Node.js services and wrappers supporting backend integration workflows across full-stack applications
Led and mentored 6 software developers and 3 QA engineers across backend, frontend, integration, and release workstreams

Jan 2021
Dec 2022

Software Developer

Bari's Technology · Karachi, PK

Developed and deployed Azure Functions for asynchronous background processing, offloading workloads from core API request cycles
Integrated Azure Blob Storage for scalable file handling within GlobalPost shipping workflows
Migrated legacy ASP.NET Web Forms applications to React.js SPAs with .NET Core backends, improving scalability and user experience
Developed reusable React.js component libraries accelerating feature delivery by 25%
Built CSV import/export pipelines processing thousands of records daily, cutting manual setup effort by 40%
Implemented full-stack features across ASP.NET Core APIs, SQL Server, and cloud-based file-processing workflows
Used TypeScript across React and Node.js development to improve maintainability and type safety in full-stack features

Apr 2019
Dec 2020

Junior Software Developer

Bari's Technology · Karachi, PK

Contributed to logistics SaaS platforms (GlobalPost, ShipEngine, ShipStation, Stamps.com) serving millions of shippers worldwide
Assisted in migrating monolithic systems to .NET Core microservices, supporting early modernization efforts
Maintained and enhanced WPF (XAML)-based operational tools supporting logistics workflows

// no matching experience for this filter

Contact

Let's work together

Open to Senior Full Stack and Backend Developer roles in the Frankfurt area and remote. Available for interviews immediately.

✉ Send email ↗ LinkedIn ⚙ GitHub

Based in

Frankfurt am Main

Germany

🇩🇪