Freelance Database Engineers in KarachiFreelance Database Engineers in Karachi
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Zaheeruddin Shaikh's avatar
Zaheeruddin Shaikh
Karachi, Pakistan
Database Design & SQL Development Specialist
New to Contra
Database Design & SQL Development Specialist
Cover image for Zultec ERP — Enterprise Resource
Zultec ERP — Enterprise Resource Planning System I worked as Team Leader / Senior Software Engineer on the development of the Zultec ERP System from June 2006 to March 2010. My primary contribution was the analysis, design and database development of the Non-Financial Modules of the ERP, including: Procurement Module Inventory Module Sales Module Production Module Services and Maintenance Module User Security Management Module I independently carried out the analysis and design of these modules, developed logical and physical database models, and created the integrated database in SQL Server 2005. I also guided developers in the implementation of the User Interface and system functionality using C# and Visual Studio 2005. A significant part of the work involved Business Process Analysis and Documentation. User requirements were gathered and documented, Business Process Flow Diagrams were developed, and Business Process Reengineering was suggested for important processes. The Non-Financial Modules were integrated with Financial Modules developed by another team, including: Accounts Receivables Module Accounts Payable Module General Ledger Fixed Assets Module Human Resource Module Payroll Module The ERP incorporated processes covering procurement, sales, inventory, production, services and maintenance. It supported activities such as customer quotations, sales orders, purchase orders, Goods Receiving Notes, Delivery Notes, production job orders, raw-material tracking, finished-product tracking, repair and service job orders, and warranty claims. The system also incorporated Standard Item Codes, Bill of Material and Chart of Accounts, providing standardization across the organization. Multi-warehouse and multi-currency functionality was also employed. My Key Contribution Database Design • Business Process Analysis • ERP Integration • UI Guidance • Reporting • Documentation • Technical Leadership Technology: C# • Visual Studio 2005 • SQL Server 2005 • Crystal Reports • Visual SourceSafe 2005 This project represents my experience in designing and integrating an enterprise ERP database around real business processes, while working closely with developers and other technical teams.
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Cover image for MAJU Outcome-Based Education (OBE) System Designed
MAJU Outcome-Based Education (OBE) System Designed and developed the database for an Outcome-Based Education system at Mohammad Ali Jinnah University (MAJU), with the frontend subsequently implemented in both PHP and C#/.NET. The system models the relationship between: PEO → PLO → CLO → Assessment It provides detailed assessment of courses by CLO and PLO for individual students and supports the management of outcome-based education across university programmes. Key areas represented Degrees — BS, MS and PhD Programmes Programme Educational Objectives (PEO) Programme Learning Outcomes (PLO) Course Learning Outcomes (CLO) CourseCLOAssessmentStructure CourseCLOAssessment Grade Sheets Transcripts Major programmes included areas such as Computer Science, Software Engineering, Computer Engineering, Data Science, Artificial Intelligence and Business Administration, along with Biotechnology and Bioinformatics-related programmes. Programme availability varies by degree level. Database & Technology Database: MariaDB SQL: SQL User Interfaces: PHP and C#/.NET .NET: .NET Core, C#, Entity Framework Core, ASP.NET (http://ASP.NET) Core Identity Reporting: RDL Reports Supporting Tool: Excel VBA The same MariaDB database was used by both the PHP and .NET user interfaces. The PHP version was developed earlier and was practically used with real data; the .NET Core version was developed later. This project demonstrates database design for a complex academic information system where educational objectives, learning outcomes and student assessment are interconnected through a structured relational database.
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Cover image for Zultec Barcode Solutions — Barcode,
Zultec Barcode Solutions — Barcode, PDA & WLAN-Based Business Solutions As Team Leader / Senior Software Engineer at Zultec, I designed and guided the development of mobile and barcode-based solutions connecting handheld PDAs, barcode scanning, WLAN/WiFi connectivity, applications, and enterprise databases. The solutions were developed using C# with Visual Studio 2005, .NET Compact Framework, Windows Mobile 6.0, WindowsCE, and SQL Server Mobile 2005, with integration with SQL Server and Oracle databases where required. I guided developers in implementing mobile applications on handheld devices and PDAs for a range of operational environments, including: • NJ Autos, Pirani Group — WiFi-based real-time transfer of workshop-floor data from handheld PDAs to SQL Server, with barcode scanning of engine and chassis information through quality checking and dispatch. • Yunus Textile Mills (YTM) — Barcode-based verification to prevent incorrect items from being packed and incorrect cartons from being dispatched. • Central Library System, NED University — Barcode generation and circulation for more than 65,000 books and 11,000 members, including issue, return and reservation using Oracle 10g and Oracle Forms/Reports. • Defense Central Library (DCL) — PDA-based physical stock taking to identify lost books, duplicate entries and uncounted inventory, with transfer of collected data to Oracle 10g. • Pakistan State Oil (PSO) — Barcode-based physical inventory of fixed assets to trace mislocated and lost items. • NSD — WiFi-based real-time data exchange through handheld PDAs across warehouses containing more than 300,000 inventory items, including barcode-based issue and return. This work combined mobile application development, barcode technology, PDA-based data capture, WLAN connectivity and database integration to support accurate and traceable operational processes across automotive, textile, education, library, oil & energy, and warehouse environments.
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Cover image for Thesis Evaluation Management Designed and developed
Thesis Evaluation Management Designed and developed a database-backed web application for managing the thesis evaluation process at an academic institution. The system manages student and thesis information including registration number, degree/programme, thesis title, supervisor and co-supervisor. It also manages thesis submission according to prescribed templates and verification requirements, including formatting, plagiarism and other guidelines. Students who qualify proceed to thesis defense before a panel comprising the supervisor and internal and external members. The system maintains the status of the thesis through these stages and supports final publication after successful evaluation and prescribed formatting. My contribution: Database design and application development. Technology: MariaDB, C#, .NET Core, Entity Framework Core, ASP.NET (http://ASP.NET) Core Identity and RDL Reports.
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Database Engineer(2)
Kawish Fazal's avatar
Kawish Fazal
Karachi, Pakistan
Web Design & Development Expert
Web Design & Development Expert
Cover image for IFC Sea Food
IFC Sea Food
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16
Cover image for London Slimming Clinic Website Development Project
London Slimming Clinic Website Development Project
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3
Cover image for Vifloor
Vifloor
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9
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Database Engineer(2)
Suneel Kumar Khatri's avatar
Suneel Kumar Khatri
Karachi, Pakistan
Full Stack Dev | React · Next.js · Node.js · TypeScript
New to Contra
Full Stack Dev | React · Next.js · Node.js · TypeScript
Cover image for Enterprise Tax SaaS — 5,000+
Enterprise Tax SaaS — 5,000+ Offices, 50K+ Returns Built and maintained a full-stack tax filing solution serving 5,000+ registered tax offices processing 50,000+ annual returns, with scalable Node.js backend and React frontend. THE CHALLENGE Create a reliable, accurate tax calculation engine compliant with FBR regulations, serving thousands of tax professionals during high-pressure filing seasons with zero tolerance for downtime. WHAT I BUILT Complex tax calculation engine implementing FBR regulations across multiple return types (99.7% accuracy) Comprehensive React dashboard with automated computation workflows, client management, and real-time filing tracking Optimized API performance — response times reduced from 450ms to 315ms (30% improvement) Led code reviews for 3-person development team Collaborated with DevOps on deployment workflows RESULTS → 99.8% platform uptime including peak tax season → 40% reduction in processing time via automated workflows → 30% faster API responses → 18% fewer production bugs during critical filing periods
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Cover image for Tax Automation Platform for US
Tax Automation Platform for US & UK Accounting Firms Contributed to TenForty, a modern tax automation platform serving accountants and financial firms across the US and UK. WHAT I BUILT Tax calculation modules with high-accuracy logic for US and UK regulatory frameworks E-filing workflows for seamless regulatory tax submission User-friendly dashboards simplifying complex financial processes for non-technical accountants Multi-tenant architecture supporting firms with multiple users and roles THE IMPACT → Multi-region deployment serving US and UK markets → End-to-end feature ownership across the full stack → High-accuracy tax logic implementation meeting regulatory standards → Scalable multi-tenant architecture for enterprise clients
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Cover image for Real-Money Gaming Platform — Backend
Real-Money Gaming Platform — Backend at Scale Engineered the complete backend microservices architecture for Pryze, a real-money competitive gaming platform with live leaderboards, real-time gameplay, and multi-provider payment processing. THE CHALLENGE Build a backend that handles thousands of concurrent players, real-time match updates, secure payment flows, and live leaderboard scoring — all with near-zero downtime. WHAT I BUILT Microservices architecture on Node.js handling 15K+ daily requests Real-time leaderboard system processing 30K+ score updates daily via RabbitMQ + Redis Pub/Sub Redis caching + MongoDB query optimization — 45% faster data retrieval (280ms → 154ms) Payment integrations: EasyPaisa, SimPaisa, PayFast with webhook handling and retry logic WebSocket-based messaging for 10K+ concurrent users AWS infrastructure: EC2, S3, X-Ray, CloudWatch Comprehensive Swagger API docs — cut third-party integration time by 50% RESULTS → 15K+ daily active users supported at 99.9% uptime → 45% faster data retrieval after caching optimization → 35% increase in daily user engagement → 30K+ real-time leaderboard updates processed daily
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Cover image for Bhoomi Restaurant Singapore — Full
Bhoomi Restaurant Singapore — Full Website Build Designed and built a complete restaurant website for Bhoomi by Chef Milind Sovani, an Indian fine dining restaurant in Singapore. WHAT I BUILT Multi-page responsive website with rich animations and transitions Landing page with image carousel and promotional banners Comprehensive menu pages with categorized dishes (meat, vegan, gluten-free, drinks) Chef profile, restaurant story, and ambience gallery Blog and media coverage sections Online ordering and table booking integration E-commerce shop page for merchandise/products THE IMPACT → Fully responsive across all devices → Fast load times optimized for SEO → Complete brand representation online → Integrated ordering and booking workflows
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Database Engineer(3)
Khizar Khan's avatar
Khizar Khan
Karachi, Pakistan
Fullstack Developer Building Web and Mobile Apps.
Fullstack Developer Building Web and Mobile Apps.
Cover image for Byte ERP System
Byte ERP System
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4
Cover image for Ezface IoT Based
Ezface IoT Based
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1
Cover image for The Employee Contract Amendment Form (ECAF) System
The Employee Contract Amendment Form (ECAF) System
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16
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Database Engineer(2)
Abdul Moiz Memon's avatar
Abdul Moiz Memon
proKarachi, Pakistan
Senior Full-Stack & Web3 Engineer | Technical Lead
$1k+
Earned
1x
Hired
5.0
Rating
19
Followers
Senior Full-Stack & Web3 Engineer | Technical Lead
Cover image for NIPRM V1 — Research Institute Website Foundation
NIPRM V1 — Research Institute Website Foundation
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37
Cover image for Sahal Wallet — Cosmos Staking & Wallet Integrations
Sahal Wallet — Cosmos Staking & Wallet Integrations
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Cover image for EthicalNode V2 — AI Assisted Platform Rebuild
EthicalNode V2 — AI Assisted Platform Rebuild
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6
Cover image for NIPRM V2 — Website, CMS & Biometric Attendance System
NIPRM V2 — Website, CMS & Biometric Attendance System
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7
Database Engineer(1)
Hassan Qureshi's avatar
Hassan Qureshi
maxKarachi, Pakistan
Level 3 Certified Glide Expert.
$50k+
Earned
36x
Hired
5.0
Rating
75
Followers
Level 3 Certified Glide Expert.
Cover image for Amazon Fulfilment Management App
Amazon Fulfilment Management App
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37
Cover image for iTVA Connect Project Management + CRM Development
iTVA Connect Project Management + CRM Development
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Cover image for iDispatchHub App Development for Innovative Logistics Group
iDispatchHub App Development for Innovative Logistics Group
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22
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Database Engineer(1)
Muhammad Adeen Khan's avatar
Muhammad Adeen Khan
Karachi, Pakistan
Full -Stack Engineer
Full -Stack Engineer
Cover image for The School Management System is
The School Management System is a full-stack platform designed to digitize and streamline daily school operations. It replaces manual record-keeping with a centralized system for managing student data, fee collection, and administrative workflows. The system enables secure student registration, automated fee management with receipt generation, and real-time access to records through an intuitive admin dashboard. Role-based access ensures that administrators and staff can efficiently manage data while maintaining security and control. Built with a scalable architecture, the platform improves operational efficiency, reduces errors, and provides better visibility into financial and academic processes, making it suitable for modern educational institutions transitioning to digital systems.
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Cover image for The AI Employee Control Center
The AI Employee Control Center is a full-stack system designed to automate core business operations through an intelligent, human-assisted workflow. It acts as a digital employee that manages communication, financial processes, and content generation while keeping the user in control of critical decisions. The platform continuously monitors business channels like email, WhatsApp, and social media, automatically generating responses, invoices, and content drafts. These actions are reviewed through a centralized dashboard, enabling one-click approvals. By integrating with ERP systems and leveraging AI-driven automation, it streamlines operations, reduces manual workload, and enhances overall business efficiency.
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Cover image for The Car Detailing Booking System
The Car Detailing Booking System is a full-stack platform built to streamline booking and customer management for car detailing businesses. It replaces manual scheduling and communication with an automated system for handling appointments, payments, and client interactions. The platform enables seamless booking with advance payments, real-time slot selection, and automated WhatsApp notifications for confirmations, reminders, and service updates. It improves operational efficiency, reduces missed bookings, and enhances customer experience through a centralized admin dashboard.
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Cover image for The Crowned by William website
The Crowned by William website is a luxury jewelry brand showcase designed to elevate digital presence and attract high-end clients. It transforms a standard website into a cinematic, premium experience that highlights jewelry collections, brand identity, and exclusivity. The platform features elegant visuals, smooth navigation, and a VIP inquiry system, allowing potential clients to explore custom jewelry services and connect directly with the brand. It enhances engagement, strengthens brand perception, and creates a high-conversion digital storefront.
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Database Engineer(1)
Ayesha Ashraf's avatar
Ayesha Ashraf
Karachi, Pakistan
Creating robust apps across the full tech stack.
New to Contra
Creating robust apps across the full tech stack.
Cover image for Built a habit tracker platform
Built a habit tracker platform using Lovable (React) + Supabase — focused on simplicity, speed, and consistency. Designed to help users actually stick to their goals.
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Cover image for Built a full-stack HRMS in
Built a full-stack HRMS in under 2 weeks as a side project to dive deeper into Python and backend development! Features so far: Employee management with role-based access (Admin / HR / Employee) Leave request workflow with approval/rejection Attendance tracking — clock in/out, monthly calendar view Payroll engine — tax brackets, overtime, pro-rated salary, PDF payslip download Notifications, search, pagination, CSV exports Dockerized and deployed Stack: Next.js · TypeScript · Tailwind · FastAPI · PostgreSQL · SQLAlchemy The backend was a new challenge for me: SQLAlchemy relationships, Alembic migrations, Decimal precision for payroll calculations, streaming PDF responses — all of it was tricky at first, but I’ve learned a lot along the way. URL: https://lnkd.in/dRg86PtQ (https://lnkd.in/dRg86PtQ)This is just the beginning! I plan to add many more features.
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Cover image for Millions of perfectly usable items
Millions of perfectly usable items spend most of their lives sitting unused like scientific calculators after exams, cameras after vacations, power tools after home repairs, and camping gear after weekend trips. Meanwhile, someone nearby is buying the exact same item for a single use. I built Borrowly to solve this problem. Borrowly is an AI-powered hyperlocal marketplace where people can rent everyday items from trusted community members. Renters save money by borrowing instead of buying, while owners earn passive income from items they already own. To make listing effortless, Borrowly introduces an AI Room Scan experience. Users simply scan their room, and AI detects unused items, generates listing details, suggests rental pricing, estimates demand, and predicts potential earnings in seconds. The prototype also includes secure booking, owner mode, AI-assisted listings, trust and verification, earnings dashboards, and a complete rental journey from discovery to return. More than a rental marketplace, Borrowly encourages a shift from ownership to access helping communities save money, reduce waste, and make better use of the things they already have. Nothing should sit unused. Borrowly (https://app.flowstep.ai/file?activeFileId=4adf3de3-a851-4e21-b438-d6ed84878f43)
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Cover image for Karachi Brasserie deserved better than
Karachi Brasserie deserved better than a phone-only reservation system 🍽️ BEFORE: A genuinely great modern-European restaurant inside the historic Hotel Excelsior in Saddar , but their entire online presence was scattered across directory listings, with reservations handled by manual phone calls and no real website of their own. AFTER: I built them a fully custom, mobile-responsive website on @Base44 — complete with their menu, brand story, and a live table reservation system. https://excelsior-karachi-dine.base44.app/ The automation: Customers pick a date, see real-time table availability, and book instantly. The system auto-confirms via email, notifies the restaurant immediately, and blocks any customer from double-booking. No more manual phone juggling. Small local businesses like this deserve a digital presence that matches the quality of what they actually offer. This one felt personal , built it in a day. #GiveItAGlow @Base44
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Database Engineer(2)