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Uzair Nadeem

@uzairnadeem2

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Senior Ruby on Rails engineer building scalable AI automation and RAG systems.

Zimbabwe

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What I'm looking for

I’m looking for a role where I can build scalable Ruby on Rails backends and ship AI-powered features end-to-end—RAG, LLM integrations, and automation—while driving performance, reliability, and real business impact through clean async workflows.

I’m a Senior Ruby on Rails engineer with 8+ years of experience building Ruby on Rails applications, AI-powered products, and n8n automation workflows. I focus on scalable backend systems that connect AI with messaging, email, and automation to solve real business problems.

In my current role, I redesigned the RAG pipeline using Shoryuken and ActiveJob—improving response quality by 7× and reducing latency by 80% via parallel subquestion processing. I also optimized Sidekiq jobs and Rails algorithms, cutting processing time by 96.8% and improving execution speed by 31×.

I integrate LLM tool calling and real-time API integrations to improve RAG accuracy by 40%, and I’ve built AI voice assistants and customer feedback workflows with n8n, Vapi, Twilio, and Gmail. I’ve replaced legacy RAG workflows with n8n-driven AI pipelines to enable faster experimentation and simpler integration of LLM-powered features.

Earlier, I led 15+ engineers across 5 projects, raised delivery efficiency by 20% through Agile execution, and mentored teams across Ruby on Rails, React, and PostgreSQL. I’ve also driven performance and infrastructure improvements—optimizing PostgreSQL queries, ActiveRecord performance, and AWS architecture to reduce costs by 25% while improving scalability.

Experience

Work history, roles, and key accomplishments

Current

Backend Senior Software Engineer

Current

WAMO Labs

May 2024 - Present (2 years 1 month)

Redesigned the RAG pipeline with Shoryuken and ActiveJob, improving response quality by 7× and reducing latency by 80%. Optimized Sidekiq and Rails processing, cutting processing time by 96.8% and improving execution speed by 31%, and upgraded Ruby/Rails to improve performance by 20%.

Ruby on Rails RAG Systems Shoryuken Sidekiq PostgreSQL N8n OpenAI

Full Stack Engineer

Kunai

Mar 2021 - Apr 2024 (3 years 1 month)

Led 15+ engineers across 5 projects, increasing delivery efficiency by 20% through Agile execution and technical leadership. Improved code reliability by 35%, reduced page load times by 30%, and lowered AWS costs by 25% through PostgreSQL/ActiveRecord and infrastructure optimizations.

Ruby on Rails React PostgreSQL ActiveRecord AWS RSpec Cucumber Capybara CI CD Performance Optimization

Software Engineer

Devsinc

Aug 2017 - Mar 2021 (3 years 7 months)

Upgraded a legacy Rails application (Rails 4.2 to 5.1, Ruby 2.6), improving performance by 30% and increasing maintainability. Automated deployments with Capistrano to cut deployment time by 50%, and reduced load times by 25% by optimizing inefficient ActiveRecord queries.

Ruby on Rails GraphQL REST APIs PostgreSQL ActiveRecord Capistrano CI CD Automation Jira