I provide end-to-end web development services including frontend UI/UX development, backend API creation, database modeling, cloud deployment, and full system architecture. I build responsive, fast, and scalable web applications tailored to your business needs.
> Ubaid Bin Waris
Ubaid Bin Waris, AI Systems Engineer - AI SYSTEMS.
AUTOMATION.
INFRASTRUCTURE.
// specialized_engineering
I build production AI systems, voice telephony agents, and high-concurrency backend infrastructure designed to scale.
AI Agents & Tool CallingVoice AI & TelephonyDistributed Redis Locksn8n Automation
ubaid@portfolio:~$ status
STATUSONLINE
# role
Full Stack Dev @ GixiAI
# location
Islamabad, Pakistan
# stack_processes
LLMSactive
VOICEvapi/livekit
REDIScluster
DOCKERrunning
LINUXubuntu/arch
uptime00:00:00
> Available for freelance & full-time roles
ubaid@portfolio:~$
3+
Years
20+
Projects
10+
Clients
Currently Building & Benchmarking
00 /
AI Systems & Infrastructure Engineering Services
GET/api/services200 OK
POST/ai-agent-development
Custom AI Agents & Tool Calling
200
Autonomous agentic systems utilizing OpenAI, Claude, Gemini, and Local LLMs (Ollama) with tool-calling, RAG, and memory architecture.
// query_params
Tool CallingRAG & Vector SearchOllama & Local LLMsMCP Architecture
Custom Scope>_ initiate →
POST/voice-ai-systems
Voice AI & Realtime Telephony
200
Production phone and voice conversation agents using Vapi, LiveKit, Twilio, Deepgram, and Whisper with low latency audio streaming.
// query_params
LiveKit WebRTCVapi & Twilio IntegrationDeepgram STT & TTSRealtime Lead Callers
Custom Scope>_ initiate →
POST/ai-workflow-automation
AI Workflow & Lead Automation
200
End-to-end process automation connecting CRMs, webhooks, lead qualification pipelines, email processing, and n8n workflows.
// query_params
n8n & Trigger.devWebhook ProcessingLead QualificationDocument Processing
Custom Scope>_ initiate →
POST/backend-architecture
High-Performance Backend Systems
200
Scalable microservices, distributed session managers, task queues, and APIs built with Node.js, NestJS, Postgres, and Redis.
// query_params
Distributed Session LocksBullMQ & RabbitMQPostgres & RedisRESTful & WebSockets
Custom Scope>_ initiate →
PUT/infrastructure-devops
Linux Infrastructure & GPU Deployment
201
Production Linux server administration, Docker containerization, Hetzner/AWS provisioning, GPU model hosting, and Nginx reverse proxies.
// query_params
Ubuntu & Docker ClustersOllama GPU WorkstationsNginx & SSL ProxyingMonitoring & Security
Custom Scope>_ initiate →
// Need something custom? Let's talk.
$ ./contact.sh01 /
System Architecture & Case Studies
// Real-world engineering patterns, distributed locks, and production AI blueprints
[BACKEND ARCHITECTURE]
⚡ 100k+ concurrent sessions / <15ms lock latencyHigh-Concurrency AI Session Manager
// Problem:High-throughput AI agent platforms suffer from race conditions, memory leaks, and out-of-order state updates when thousands of concurrent socket/voice sessions hit LLM worker pools.
02 /
Projects
$ ls -la ~/projects
commit/001
commit/002
commit/003
commit/004
- OpenAI & Claude APIs - AI Agents
- Tool Calling & MCP - AI Agents
- Ollama Local LLMs - AI Agents
- RAG & Vector Search - AI Agents
- LiveKit WebRTC - Voice AI
- Vapi & Twilio - Voice AI
- Deepgram STT - Voice AI
- Cartesia Realtime TTS - Voice AI
- Node.js & NestJS - Backend Systems
- Distributed Session Locks - Backend Systems
- BullMQ & RabbitMQ - Backend Systems
- Postgres & Redis - Backend Systems
- n8n Workflows - Automation
- Trigger.dev - Automation
- Webhook Pipelines - Automation
- Lead Qualification - Automation
- Linux / Ubuntu Admin - Infrastructure
- Docker & Compose - Infrastructure
- HP Z840 Workstation - Infrastructure
- Hetzner & AWS - Infrastructure
- Next.js & React - Supporting Stack
- TypeScript - Supporting Stack
- Tailwind CSS - Supporting Stack
- RESTful & WebSockets - Supporting Stack
00 /
About Ubaid Bin Waris
ONLINE
Ubaid Bin Waris
Senior Full Stack & AI Systems Engineer
Islamabad, PK 3+ Yrs Exp Node / Next.js / AI
about.md
00
// who_i_am
Ubaid Bin Waris - AI Systems & Infrastructure Engineer based in Islamabad, Pakistan. I design and deploy autonomous AI agents, voice telephony systems, high-concurrency backends, and Linux cloud infrastructure.
05
// what_i_do
Building production AI systems: OpenAI/Claude/Gemini tool-calling agents, LiveKit/Vapi Voice AI callers, Redis distributed session managers, and n8n workflow automation.
10
// hardware_infrastructure
I run a dedicated HP Z840 dual-Xeon workstation (96GB RAM) running Linux & Ollama for local LLM benchmarking (Qwen/Gemma), model quantization, and self-hosted agent testing.
15
// core_philosophy
Design for scale and resiliency. Use distributed locks for concurrent workers, persistent queues for webhook retries, and strict isolation for production agent environments.
$ cat work_philosophy.log
✓
[AI_SYSTEMS]Building deterministic, tool-calling AI agents with memory and safety guardrails.
✓
[CONCURRENCY]Distributed locks and message queues to eliminate race conditions under load.
✓
[PRODUCTION_DEVOPS]Dockerized deployments on Linux servers with monitoring and SSL proxies.
✓
[BUSINESS_IMPACT]Automating core sales, qualification, and data processes for high ROI.
$ ls -la /proc/capabilities/
6 domainsAI Agents
OpenAI & Claude APIsTool Calling & MCPOllama Local LLMsRAG & Vector Search
Voice AI
LiveKit WebRTCVapi & TwilioDeepgram STTCartesia Realtime TTS
Backend Systems
Node.js & NestJSDistributed Session LocksBullMQ & RabbitMQPostgres & Redis
Automation
n8n WorkflowsTrigger.devWebhook PipelinesLead Qualification
Infrastructure
Linux / Ubuntu AdminDocker & ComposeHP Z840 WorkstationHetzner & AWS
Supporting Stack
Next.js & ReactTypeScriptTailwind CSSRESTful & WebSockets
all systems operational3+ years production
AVAILABLE_FOR_HIRE
Open to freelance contracts and full-time roles.
Let's build something that's worth building.
03 /
Experience
Building AI-powered solutions!
commita1f3b2c
activeSenior Full Stack Developer
@GixiAI·Aug 2025 – Present
// commit message
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.
Innovation meets functionality
Crafting pixel-perfect interfaces!
commit7d3e891
Web Developer
@HH Tech Hub·Jun 2025 – Jul 2025
// commit message
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.
Design that speaks volumes
Full-stack excellence delivered!
commit2f9b012
Full Stack Developer
@BluCentric·Feb 2025 – May 2025
// commit message
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.
End-to-end development mastery
Learning and growing every day!
commita4c830f
Intern
@Higher Education Commission·Jun 2023 – Aug 2023
// commit message
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.
Foundation of tech excellence
Frequently Asked Questions
Common questions about my services, skills, and collaboration process
I work with modern technologies such as Next.js, React, Node.js, Express, MongoDB, PostgreSQL, Tailwind CSS, TypeScript, REST APIs, Git, Docker, and cloud hosting platforms like Vercel and AWS. My tech stack ensures high performance, security, and long-term scalability.
Yes. I can handle everything from planning and design to development, deployment, and maintenance. Whether it's a business website, dashboard, SaaS product, or full-stack application, I provide complete solutions.
My workflow includes requirement analysis, UI/UX planning, clean coding, optimization, testing, deployment, and post-launch support. I use an agile approach to ensure transparency, timely updates, and high-quality results.
Absolutely. I ensure every website is fully responsive on all screen sizes, optimized for fast loading speed, follows SEO best practices, and provides a smooth user experience.
You can reach me through the contact form on this website, or via email, LinkedIn, or GitHub. I respond quickly and am always open to discussing new ideas and collaborations.
04 /
Contact
# Got a project? Reach out directly via email or social channels below.
ubaid@portfolio:~$ cat contact_info.json
$ status --availability
AVAILABLE FOR FREELANCE & FULL-TIME ROLES
$ direct --email
ubaidwaris34@gmail.com$ system --location
Islamabad, Pakistan (UTC+5) • Remote Worldwide