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I’m Umer Wali, a full-stack developer and team lead with hands-on experience building production-grade backend systems and AI/LLM workflows. I’ve worked on server-side AI engineering tasks like RAG pipelines, structured outputs, tool-calling/agent orchestration, and evaluation harnesses—always focused on correctness, grounding, and resilient failure handling. I also enjoy shipping real user-facing products end-to-end, from architecture and documentation to deployment and delivery. Recently, I built a WhatsApp-native AI sales agent for a multi-tenant firearms retail workflow (zero-UI), and I’ve been developing a low-latency C++ arbitrage bot for Polymarket. Alongside engineering, my background in cybersecurity helps me take security and incident-aware design seriously across deployments, APIs, and data systems.…I’m Umer Wali, a full-stack developer and team lead with hands-on experience building production-grade backend systems and AI/LLM workflows. I’ve worked on server-side AI engineering tasks like RAG pipelines, structured outputs, tool-calling/agent orchestration, and evaluation harnesses—always focused on correctness, grounding, and resilient failure handling. I also enjoy shipping real user-facing products end-to-end, from architecture and documentation to deployment and delivery. Recently, I built a WhatsApp-native AI sales agent for a multi-tenant firearms retail workflow (zero-UI), and I’ve been developing a low-latency C++ arbitrage bot for Polymarket. Alongside engineering, my background in cybersecurity helps me take security and incident-aware design seriously across deployments, APIs, and data systems.

UMER WALI

Full Stack Developer, Back-End Developer, AI Engineer, +2

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I’m Umer Wali, a full-stack developer and team lead with hands-on experience building production-grade backend systems and AI/LLM workflows. I’ve worked on server-side AI engineering tasks like RAG pipelines, structured outputs, tool-calling/agent orchestration, and evaluation harnesses—always focused on correctness, grounding, and resilient failure handling. I also enjoy shipping real user-facing products end-to-end, from architecture and documentation to deployment and delivery. Recently, I built a WhatsApp-native AI sales agent for a multi-tenant firearms retail workflow (zero-UI), and I’ve been developing a low-latency C++ arbitrage bot for Polymarket. Alongside engineering, my background in cybersecurity helps me take security and incident-aware design seriously across deployments, APIs, and data systems.…I’m Umer Wali, a full-stack developer and team lead with hands-on experience building production-grade backend systems and AI/LLM workflows. I’ve worked on server-side AI engineering tasks like RAG pipelines, structured outputs, tool-calling/agent orchestration, and evaluation harnesses—always focused on correctness, grounding, and resilient failure handling. I also enjoy shipping real user-facing products end-to-end, from architecture and documentation to deployment and delivery. Recently, I built a WhatsApp-native AI sales agent for a multi-tenant firearms retail workflow (zero-UI), and I’ve been developing a low-latency C++ arbitrage bot for Polymarket. Alongside engineering, my background in cybersecurity helps me take security and incident-aware design seriously across deployments, APIs, and data systems.

Available to hire

I’m Umer Wali, a full-stack developer and team lead with hands-on experience building production-grade backend systems and AI/LLM workflows. I’ve worked on server-side AI engineering tasks like RAG pipelines, structured outputs, tool-calling/agent orchestration, and evaluation harnesses—always focused on correctness, grounding, and resilient failure handling.

I also enjoy shipping real user-facing products end-to-end, from architecture and documentation to deployment and delivery. Recently, I built a WhatsApp-native AI sales agent for a multi-tenant firearms retail workflow (zero-UI), and I’ve been developing a low-latency C++ arbitrage bot for Polymarket. Alongside engineering, my background in cybersecurity helps me take security and incident-aware design seriously across deployments, APIs, and data systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Beginner

Language

English

Intermediate

Urdu

Advanced

Work Experience

Satellite-Based Supply-Chain Risk Monitoring Developer (Personal/Project) at Acreon (Zero Point Intel)

January 1, 2026 - Present

Built a satellite-based risk monitoring platform for food buyers to surface early crop stress and lead-time signals (up to ~8 weeks) from Sentinel-2/Copernicus imagery. Processed SAR and optical satellite data in Python and computed vegetation indices like NDVI/NDRE to convert remote-sensing inputs into actionable risk signals.

Backend AI Engineer / Full-Stack AI Systems (Personal Project) at Rabta AI

January 1, 2026 - Present

Engineered a production-grade, multi-tenant WhatsApp-native AI sales assistant delivered via the WhatsApp Business Platform/Cloud API with no app or website. Built deterministic LangGraph orchestration with dedicated customer and owner flows, used Gemini for language generation, and implemented a bilingual intent extraction pipeline returning strict JSON with regex fallback. Added grounded recommendations via PostgreSQL + pgvector catalog embeddings with instant cache invalidation on inventory/price changes, plus owner escalation and multi-turn intake flows with atomic thread-state resets. Integrated voice transcription (Deepgram) and deployed on Docker Compose (Vultr VPS) with isolated tenant IDs.

Backend AI Engineer (Intern) at FlyRank AI

January 1, 2026 - Present

Selected for the Backend AI Engineering track, focusing on server-side AI systems and production workflows. Worked on AI backend tasks including API contracts, retrieval-backed answer flows, structured outputs, tool-calling/agent loops, and rubric-based evaluation. Documented design decisions, verification notes, and recommended improvements in an evidence-based review process.

Lead Developer (Team Lead) at From Tribe (Zero Point Intel) — Multi-Vendor E-Commerce Marketplace

January 1, 2025 - Present

Led a 3-developer team under mentorship of a senior cloud architect to ship a multi-vendor marketplace connecting EU artisan brands with customers. Built a Next.js 14 storefront and Medusa.js commerce backend including multi-vendor order routing and split payouts. Implemented a PostgreSQL/Prisma data layer, Stripe Connect payouts, and Redis caching. Supported a business model with a flat 13% commission and zero listing fees to improve brand competitiveness without ad spend.

Incident Management System Developer (Course Project) at GIKI (CS-232 DBMS course)

January 1, 2025 - Present

Built a full-stack incident management system using Node.js, Express, React/Vite, and PostgreSQL. Implemented a relational schema for real-time logging and audit-trail tracking. Added JWT authentication with bcrypt password hashing and RBAC middleware to support multi-role access and system integrity.

HFT Arbitrage Bot Developer (Personal Project) at Polymarket V2

January 1, 2025 - Present

Architected and deployed a C++ low-latency arbitrage bot using the Polymarket V2 CLOB API to execute latency-aware statistical arbitrage strategies. Implemented sub-millisecond signing and optimized hot paths using zero-allocation techniques and lock-free data structures with strict memory alignment. Deployed on Google Cloud (Singapore) for exchange proximity, targeting tick-to-trade latency under 50µs and sustained burst throughput. Designed FOK dual-leg execution to reduce leg risk and performed a security-focused rewrite after auditing a predecessor implementation.

Freelance Developer & Consultant at Various international clients

January 1, 2024 - Present

Delivered custom software and web projects for international clients, covering the full development lifecycle from scoping and planning through delivery. Managed end-to-end implementation while coordinating requirements and timelines across remote collaboration.