Hire the Best XSL Specialists
in Pakistan

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Muhammad U.

Lahore, Pakistan

$24/hr
4.9
20 jobs

I build production-grade AI voice systems and scalable backend platforms. I’m a Senior Full Stack Developer and AI Automation Specialist with hands-on experience designing and running real-world AI infrastructure, including my own platform FreeAIVoice, where I developed and deployed: GPU-based Text-to-Speech (TTS) systems Speech-to-Text pipelines using Whisper Voice cloning and multilingual voice systems High-performance FastAPI services with queue-based processing Scalable backend architecture using .NET Core, SQL Server, MongoDB, and Redis What I Can Do For You AI Voice & Speech Systems Text-to-Speech (TTS) using Coqui XTTS, Kokoro, ElevenLabs Speech-to-Text (STT) using Whisper Voice cloning & multi-speaker systems Audio generation pipelines (high throughput, GPU optimized) Streaming or batch audio APIs Backend & API Development FastAPI (Python) high-performance APIs ASP.NET Core / MVC enterprise applications REST API design with authentication, rate limiting, usage tracking Queue-based systems (MongoDB / Redis) Multi-threaded and multi-GPU processing systems Database & Performance Optimization SQL Server (DBA-level optimization, stored procedures, indexing) MongoDB (aggregation pipelines, queue systems) Redis caching for high-speed systems Query optimization for large-scale datasets System Architecture & Scaling AI system design (end-to-end pipelines) GPU workload optimization (parallel processing) Load balancing across multiple servers Docker & Linux (Ubuntu) deployment Cloud + on-prem hybrid systems Real Experience (Not Just Theory) I don’t just experiment — I build real systems. Developed and running FreeAIVoice platform Built multi-threaded TTS system with 2000+ audio generations per minute Designed scalable queue-based architecture for AI workloads Integrated AI into production SaaS systems (telephony & automation) Why Work With Me? I understand both AI + real production systems Strong combination of .NET + Python + AI (rare skillset) Focus on performance, scalability, and reliability I think like a solution architect, not just a coder Let’s Talk If you're building: AI voice platform TTS / Speech system SaaS backend High-performance API I can help you design, build, and scale it properly. Skills Text-to-Speech (TTS) Speech-to-Text (STT) Whisper Coqui TTS FastAPI Python ASP.NET Core C# SQL Server MongoDB Redis REST API Development AI Development Machine Learning Deployment Docker Linux (Ubuntu) GPU Computing

  • XSL
  • ASP.NET
  • XML
  • AJAX
  • jQuery
  • CSS
  • JavaScript
  • XPath
Ghulam M.

Lahore, Pakistan

$60/hr
4.9
241 jobs

Top-rated Full-Stack Developer with 12+ years delivering secure, scalable solutions that produce measurable business outcomes for global clients. What clients achieved with my work Reduced login friction and support costs by up to 80% after SSO rollouts (SAML, OAuth2, OIDC), improving user adoption and lowering helpdesk tickets. Cut user onboarding time from days to minutes via centralized identity flows and automated provisioning. Increased team productivity up to 40% with custom Office and Google Workspace add-ins that automate repetitive work and integrate third-party systems. Strengthened security and compliance (SOC2, ISO, GDPR) by implementing hardened IAM, PKI, and cryptographic document signing. Scaled multi-tenant SaaS to thousands of organizations with sub-second auth latency and 99.9% uptime. Accelerated go-to-market and recurring revenue growth by delivering modular auth and API platforms. Selected results & experience 100+ SSO integrations across Okta, Auth0, Azure AD/Entra ID, Google Workspace, AWS Cognito, Ping Identity, ADFS, Salesforce. Architected a multi-tenant Identity Broker (sso.id) enabling customers to connect multiple identity providers in minutes, boosting partner integrations and conversions. Built 15+ Office & Google Workspace add-ins (Word, Excel, Outlook, PowerPoint, Gmail, Sheets, Docs), saving teams hundreds of person-hours per month. Developed 20+ SaaS platforms from MVP to enterprise scale with AI automation and APIs (YouTube, AWS, Firebase, Microsoft Graph), improving engagement and monetization. Implemented PKI, PDF signing, and blockchain anchoring to reduce fraud risk and streamline audits. Technical stack Protocols: SAML, OAuth2, OpenID Connect, SCIM, JWT Platforms: Okta, Auth0, Azure AD/Entra ID, Google Workspace, AWS Cognito, Ping Identity, ADFS, Salesforce Frontend: React, Next.js, Vue, Angular, TypeScript Backend: .NET 8 / C#, Node.js, Python, PHP (Laravel, Django) Databases: MySQL, Oracle, MongoDB Specialized: PKI, cryptography, PDF signing, blockchain-secured documents Why hire me ROI-focused: $1.2M+ earned across 200+ projects with measurable improvements in security, productivity, and time-to-market. Business-first engineering: I reduce operational costs, accelerate onboarding, and unlock new revenue channels. Long-term partner: responsive, reliable, and focused on evolving systems as your business grows. Tell me about your auth, add-in, or SaaS challenge and I’ll outline how we can reduce risk, save time, and increase adoption.

  • C#
  • D3.js
  • ASP.NET MVC
  • Vue.js
  • AngularJS
  • CSS 3
  • React
  • Node.js
  • React Native
  • JavaScript
  • Python
  • Single Sign-On
  • Office 365
  • User Authentication
Syed A.

Lahore, Pakistan

$30/hr
4.9
84 jobs

A top-rated expert in crafting end-to-end AI solutions, from UI design to deployment, that are beautiful, robust, scalable, and cost-effective. I work at the intersection of AI Agents, CRM Systems, AI Automation, Web and Mobile App Development, Product Design, and Cloud Infrastructure. Helping startups launch fast and established teams save time and cost. 🚀 What I'm Best At: 🔹 AI Agents and Automations using Claude Code, n8n, GoHighLevel (GHL), chatbots and voice agents: 🎤 Voice Bots: Retell, Vapi, Twillio, ElevenLabs, Telnyx, and more 🗣️ Chatbots: Custom Bots, Wordpress, Shopify, Vapi, Rasa, ChatterBot, Amazon Lex, and more 🧠 Automation & Integration: Claude Code, n8n, Zapier, Make 🔍 Vector Databases for RAG: Chroma, Pinecone, Qdrant, pgVector 📣 Lead Generation, Outreach and Automation Systems 📦 Other: GoHighLevel integration, Social Media Automation, Video Generation automation, Blog Generation Automation, Custom Business Processes Automations, Document conversion to Audiobook, Offline form docs to Live Surveys, Creating Social Media Posts from Documents 🔹 Full Stack Web App Development: 🔧 UI/UX Design: Figma, Prototyping, Web Accessibility 🖥️ Frontend Development: Next.js, React, Angular, Vue, Vaadin 💻 Backend Development: Node.js, NestJS, Java (8–20+), Kotlin, Python 🐍 Python Frameworks: Flask, FastAPI ⚙️ Java Ecosystem: Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Spring Cloud, Spring AI, Micronaut, Hibernate, Apache Camel, Apache Kafka, Keycloak 📦 Other: Ktor, JavaFX 💾 Databases: MySQL, PostgreSQL, MongoDB, IBM DB2, Oracle, MariaDB 🔧 Tools: JDBC, Maven, Gradle, XSL, JSTL, JSP 📊 Observability: Elastic Stack, Prometheus, Grafana, Logstash, Kibana, Datadog, Loki, Jaeger, AWS CloudWatch ✅ Software Testing: Playwright, Selenium, Cypress, Jest, Vitest, JUnit, Mockito, Cucumber, Selenium, Concordion ☁️ DevOps & Cloud: AWS, GCP, Docker, Kubernetes, Bash, Shell, Ansible, Terraform, Chef, CloudFormation, Jenkins, GitLab CI, Pulumi (IaC) 🔹 Mobile App Development: 📱 Frameworks: Flutter/FlutterFlow/Dart, React Native, Expo, Android and iOS native bridging 🔒 Authentication & Notifications: Firebase Auth, Push Notifications, FCM, 💾 Offline & Real-Time: Offline Support, Real-time Sync, Secure Storage 🔹 Why Choose Me: › I treat client success as my own, caring for their project like it's my own › Excellent and Bilingual English communication: I understand your requirements completely, and can communicate clearly, and I make sure to keep you updated › Dedicated to clean, beautiful work: Well-documented work that any new dev can jump on, and has a low maintenance cost. › AI-embedded workflow: I extensively use an AI-first approach. This reduces cost and time to ship, giving me the edge over traditional dev shops 💪 Proven Success: I'm happy to connect you with one of my previous clients on a live call, who can personally vouch for the value I delivered. 🔹 Let’s Talk Do you need: - An AI system to automate your business processes to save costs and time - To develop a web app or mobile app MVP you can sell as a SaaS product - To modernize your existing Enterprise app with AI features - A high-converting Shopify store You are welcome to click the "Invite" button, or just send me a message : )

  • Java
  • Spring Boot
  • Python
  • JavaScript
  • React
  • AWS Application
  • AI Development
  • Chatbot Development
  • n8n
  • React Native
  • Flutter
  • Mobile App Development
  • Kubernetes
  • Figma
  • AI Agent Development
Bilal M.

Faisalabad, Pakistan

$17/hr
4.9
64 jobs

🏆 Top Rated Plus — delivering future-ready Oracle, Cloud, and AI-powered solutions trusted by global clients. Hello! I'm Bilal Maqsood, an Oracle APEX Developer, OCI Cloud Architect, PL/SQL Expert, and AI Integration Specialist with a proven track record of building secure, high-performance, and intelligent applications. With 2+ years of experience and multiple successful Upwork projects, I combine Oracle development with modern AI technologies, automation, and advanced integrations to help businesses operate smarter and faster. 🌟 Core Expertise (Oracle + Cloud + AI) ✔ Oracle APEX Development Building scalable, secure, and feature-rich business applications with custom UI, dynamic actions, and advanced components. ✔ Oracle Cloud Infrastructure (OCI) Deploying cloud-native APEX apps, Autonomous DB, VCN setup, identity configuration, and performance optimization. ✔ AI Integration & Intelligent Automation Integrating AI-powered workflows, embedding NLP features, connecting chatbots, and enabling AI-driven decision-making inside APEX and backend systems. ✔ Agentic AI (AI Agents) Implementing smart AI agents that automate tasks, perform reasoning, interact with APIs, assist users, and enhance enterprise applications. ✔ Python API Development & Integrations Building REST APIs using Python, integrating AI models, NLP services, automation scripts, and external APIs into Oracle applications. ✔ SQL & PL/SQL Engineering Designing optimized data architectures, writing efficient packages, functions, triggers, and backend logic. ✔ JavaScript, UI/UX & Modern Front-End Enhancements Crafting interactive, visually appealing, and dynamic user experiences inside APEX using JS, jQuery, and Tailwind-style components. ✔ REST API Integration Connecting Oracle APEX with external services, AI platforms, cloud systems, and third-party enterprise tools. ✔ Jasper Reports Development Creating advanced, pixel-perfect reporting solutions with automation and dynamic data visualization. 🏆 Why Clients Choose Me 💖 Top Rated Plus — elite 3% freelancer on Upwork Modern skillset: Oracle + Cloud + AI Proven history of on-time, high-quality deliveries Scalable architectures designed for long-term growth Strong focus on security, performance, and clean code Transparent communication and professional project handling Experience working with global clients in diverse industries 🚀 What I Deliver Custom Oracle APEX enterprise applications Full OCI environment setup & cloud deployments AI features, NLP integrations, and intelligent automation Python-based REST APIs and backend integrations Secure API development & third-party system connectivity PL/SQL logic, database optimization & troubleshooting Jasper reporting, dashboards & automated scheduling UI/UX improvements, modular JS components & performance tuning I’m here to help you build secure, scalable, and AI-enabled Oracle solutions that are ready for the future of enterprise technology. If you're looking for a Top Rated Plus Oracle & AI Developer who can deliver modern, intelligent, and high-performing solutions— let’s collaborate and take your application to the next level. 💬 Ready to get started? Let's discuss your project!

  • HTML5
  • JavaScript
  • API
  • Oracle
  • Oracle APEX
  • Oracle PLSQL
  • Oracle Database
  • Oracle Integration Cloud Service
  • Oracle Database Administration
  • Oracle Cloud
  • Oracle E-Business Suite
  • Oracle Forms
  • Oracle NoSQL Database
  • Oracle NetSuite
  • Oracle CRM On Demand
Nabeel J.

Lahore, Pakistan

$15/hr
5.0
18 jobs

An experienced Oracle Apex expert with industry experience over a decade; proficient in SQL, PL/SQL, APEX (Oracle Web Application), Apex Forms / Reports and Analytics. A Certified Oracle APEX Professional, specializing in developing Logistic Management Systems and HR Management applications for Public sector and other Enterprise clients. Automation of projects demanding a thorough understanding of hundreds of processes. My Experties involves automating these processes, fostering collaboration, and leveraging data generated by automation to support decision-making and future forecasting. CERTIFICATIONS: ✅Oracle Data Management Associate ✅Oracle Autonomous Database and AI Machine Learning Associate ✅ORACLE Enterprise Analytics Professional ✅ORACLE APEX Cloud Developer Professional ✅ORACLE Cloud Data Science Professional Professional services include, following: ✅Oracle APEX Certified Professional ✅Full Stack Development ✅Back End Developer ✅Oracle Database / Performance Tuning ✅E-Business Suite ✅Techno Functional Expert ✅Senior OAF Developer ✅XML Publisher / PLSQL Functions/ ✅Database Database config Expertise with 11g 19c and seamless data integration ✅Oracle Apex database ORDS with tomcat SSL and Jasper Apex Office Print

  • Database
  • Oracle PLSQL
  • Oracle APEX
  • Oracle Analytics Cloud
  • Oracle Programming
  • Oracle Forms
  • Oracle Reports
  • Oracle Database
  • Oracle Exadata
  • Oracle Database Administration
  • Project Management Professional
  • Oracle Cloud
  • Oracle Business Intelligence
  • Oracle NetSuite
  • Oracle
Asad A.

Karachi, Pakistan

$30/hr
4.9
27 jobs

Top Rated Adobe Acrobat JavaScript Expert specializing in advanced fillable PDF forms, smart automation, and secure digital workflows. I help businesses eliminate manual PDF processes and save 10–20+ hours per week by building intelligent, automated, and error-proof PDF systems. If your PDF requires more than basic editing — you’re in the right place. 🔧 What I Specialize In ✔ Advanced Fillable PDF Forms (calculations, validations, conditional logic) ✔ Adobe Acrobat JavaScript Automation ✔ Dynamic Stamps & Auto-Increment Systems ✔ Batch Processing Scripts (merge, rename, stamp, export) ✔ Secure Contracts with Digital Signature Workflows ✔ Complex Form Redesign & Optimization ✔ Document Security & Permissions 🔥 Real Results Delivered • Automated a 200+ field financial form with live validation, saving 15+ hours per week • Built a script to process 1,000+ PDFs in minutes instead of hours • Created secure legal contracts with automated signature flows • Developed dynamic numbering stamps for enterprise documentation 💼 Who I Work With • Law Firms • Financial Institutions • Real Estate Professionals • HR Departments • Healthcare Providers • Corporate Teams 💎 Why Clients Choose Me • Rare specialization in Acrobat JavaScript (not just editing) • Clean, scalable, enterprise-level solutions • Fast communication & structured workflow • On-time delivery with professional documentation • Top Rated with 100% Job Success If you need serious Advanced Fillable PDF Forms & Automation — let’s talk.

  • Adobe Photoshop
  • Adobe Illustrator
  • Graphic Design
  • Adobe InDesign
  • Adobe Acrobat
  • Data Extraction
  • Microsoft Word
  • Microsoft Office
  • PDF Conversion
  • Document Conversion
  • Microsoft Excel
  • Formatting
  • Data Scraping
  • Google Docs
  • Database

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