Faheem Z.

AI Automation & Backend Engineer | n8n, LLM Workflow, Java/Spring Boot

Most automation projects break down when no-code tools hit their limits. If you need workflows that connect messy APIs, process real documents with LLMs, and survive production volume, you need engineering behind the automation — not another Zapier recipe. I'm a backend engineer with 18 years building systems that have to stay up. I build the reliable layer underneath your automations: custom services, queues, retries, error handling, and the logic no-code platforms can't express. WHAT I BUILD Intelligent Document Processing (IDP): Invoices, receipts, and complex PDFs converted into structured, validated JSON using Vision LLMs, schema-enforced validation rules, and human-in-the-loop review fallbacks. Automation with Enterprise Backends: n8n (self-hosted or cloud) orchestrated with custom Spring Boot APIs. When a workflow requires database transactions, strict security policies, or heavy business logic, that layer is engineered as a clean, performant service. Event-Driven Integrations: Cloud storage (S3, Dropbox), transactional databases, WhatsApp Business API, and email/SMS gateways wired together to ensure guaranteed delivery instead of silent failures. Pipeline Rescue & Durability: Fixing automations that break under load due to missing idempotency, unhandled timeouts, or unmanaged rate limits. CORE STACK Automation & AI: n8n (self-hosted/cloud), Spring AI, LLM APIs (OpenAI, Gemini, Anthropic), prompt engineering, JSON schema enforcement Backend Engineering: Java (8–21), Spring Boot 3, Spring Data JPA, Hibernate, REST APIs, webhooks, RabbitMQ Databases & Caching: MySQL/MariaDB, PostgreSQL, Redis, query optimization, transaction management Cloud & Infrastructure: Docker, Linux administration, AWS, PDF generation and parsing engines, JavaScript/React HOW I WORK For complex automation work, I start with a paid discovery audit. I map your current workflow, identify the failure points, and deliver a technical architecture plan with fixed build estimates. You keep the architecture blueprint whether we proceed with the build or not. Send me the workflow or business process you want to automate, and I will let you know candidly how to build it right.