Available for new projects
UBAID BIN WARIS / FULL-STACK DEVELOPER
From polished React interfaces to production APIs, AI automation, voice agents, databases, deployment pipelines, and the Linux servers that keep everything running.
01 / SELECTED WORK
Live products, open-source tools and private client systems. Each one links to the product, the code or an architecture walkthrough.
A free, open-source desktop app for testing your own website forms across real browsers, 226 emulated devices and US locations, with recorded scenarios and evidence reports.
A multi-tenant voice platform combining an AI receptionist, IVR menus, intelligent call routing and live transfers, deployed and tested on real phone calls.
A fully local, GPU-accelerated platform that transcribes, diarizes and QA-scores sales calls without cloud AI APIs, at about 38× real-time transcription speed.
A standalone AI assistant for streaming conversations, cited web research, PDF and Word document analysis and voice interaction, built on an isolated, security-first architecture.
An n8n pipeline that turns a Telegram voice message into a finished video with AI transcription, generated subtitles, background media and FFmpeg rendering.
An SEO-optimized Next.js and PostgreSQL company website with a custom admin panel for managing blogs, portfolio projects, team members and company content.
02 / FULL-STACK PRACTICE
I work where product engineering, backend systems, AI and operations meet, so features are designed with deployment and long-term ownership in mind.
Fast, accessible product interfaces with maintainable component systems.
APIs, services, queues, authentication, and reliable business logic.
Useful agents and workflows connected to real tools, data, and approvals.
Real-time voice agents with telephony, CRM tools, routing, and handoff.
Practical schemas, queries, migrations, caching, and durable application state.
Repeatable deployments, secure web servers, SSL, and Linux operations.
$ uname -daily-driver
I use Arch, BTW.Permanently running Arch Linux for years: building, deploying and managing systems from the same environment I trust every day.03 / ENGINEERING SERVICES
One engineer. Connected capabilities. Explore the approach, deliverables and tools behind each service.
Custom AI agents with tool calling, retrieval and human approval. Built by Ubaid Bin Waris for your workflows, APIs and business data.
Voice AI development with LiveKit, Vapi and Twilio. Call routing, CRM integration and human handoff by Ubaid Bin Waris. Available worldwide.
n8n automation consulting for CRMs, webhooks and AI workflows. Self-hosted deployments, retries and handover by Ubaid Bin Waris.
Node.js backend and API development with PostgreSQL, Redis and queues. System architecture and integration by Ubaid Bin Waris.
Linux, Docker and cloud deployment by Ubaid Bin Waris. Server setup, reverse proxies, backups and local LLM hosting with documented handover.
Hire Ubaid Bin Waris, a Next.js developer in Islamabad, Pakistan. App Router websites, SaaS interfaces and backend integration for remote teams.
04 / ABOUT
Senior Full Stack & AI Systems Engineer
AI Agents
Voice AI
Backend Systems
Automation
Infrastructure
Product & Data
ai_systemsBuilding tool-calling AI agents with memory, evaluations and explicit permissions.
concurrencyDistributed coordination, idempotent jobs and queues to manage concurrency.
production_devopsDockerized deployments on Linux servers with monitoring and SSL proxies.
business_impactAutomating core sales, qualification, and data processes for high ROI.
Available for hire
Open to freelance contracts and full-time roles. Let's build something that's worth building.
05 / EXPERIENCE
Aug 2025 – Present
GixiAI
Design and develop full-stack web applications with AI-powered features. Collaborate with cross-functional teams to manage database operations, optimize performance, and handle deployment processes following agile methodologies.
Jun 2025 – Jul 2025
HH Tech Hub
Developed responsive web applications using HTML, CSS, and JavaScript. Implemented UI components with cross-browser compatibility, optimized performance, and collaborated with design teams to deliver quality web pages.
Feb 2025 – May 2025
BluCentric
Developed end-to-end web applications using Next.js and SQL databases. Managed frontend and backend tasks, implemented RESTful APIs, optimized database queries, and maintained comprehensive documentation for development processes.
Jun 2023 – Aug 2023
Higher Education Commission
Assisted in web development and frontend implementation. Supported portal maintenance, conducted UI testing, documented technical processes, and contributed to accessibility improvements across departmental platforms following industry best practices.
06 / FAQ
I build AI agents, voice AI and call center systems, workflow automation, Node.js backends and Next.js applications, plus the Linux and AWS infrastructure they run on. Recent work includes an AI voice receptionist platform, a local sales call transcription and QA system, and an open-source cross-browser QA app.
I am based in Islamabad, Pakistan (UTC+5), and work remotely with international clients. We agree on communication channels and overlapping working hours during scoping.
Yes, for public work. Proxy QA Browser is open source under Apache 2.0, and Sales Call Intelligence is on GitHub. Orenyx Voice Dispatch, Gixiai and LetsScall are live in production. Client-owned repositories stay private; for those, the portfolio has architecture walkthroughs instead.
I scope the deliverables, integrations, hosting requirements and target date with you before providing a proposal. Third-party usage and hosting costs are identified separately.
Deployment and handover can be included in the project. Ongoing maintenance is scoped separately with clear ownership, response expectations and support boundaries.
Email ubaidwaris34@gmail.com with your goals, existing systems and target date. You can also contact me through the linked Upwork or LinkedIn profile.
07 / CONTACT
Send your goals, existing systems and target date. I reply within about 24 hours.
Available for freelance & full-time roles
location
Islamabad, Pakistan (UTC+5) · Remote worldwide