Humayun Babar, Developer in Dubai, United Arab Emirates
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Humayun Babar

Verified Expert  in Engineering

Full-stack Engineer and Developer

Dubai, United Arab Emirates

Toptal member since November 4, 2024

Expertise
Back-end DevelopersFull-stackRuby on RailsRubyREST APICSSJavaScriptPostgreSQLReact.jsGraphQLLLMMachine LearningAWSPythonNode.js
Bio

Humayun is a senior full-stack engineer with a strong background in Ruby on Rails, React, and microservices architecture. He specializes in building scalable solutions, optimizing web performance, and enhancing code quality. With extensive experience in front- and back-end technologies, he creates efficient, secure, and well-tested applications. Humayun is also passionate about research-driven development and strives continuously to deliver high-performance, user-centric solutions.

Portfolio

Agent Studio
Ruby, Ruby on Rails 6, Large Language Models (LLMs), Languages...
Toptal, LLC
React, Ruby, Ruby on Rails (RoR), GraphQL, PostgreSQL, TypeScript, APIs...
Medwing.com
Elixir, Ruby on Rails (RoR), Microservices, Apache Kafka, PostgreSQL, Phoenix...

Experience

  • Ruby on Rails (RoR) - 10 years
  • Ruby - 10 years
  • PostgreSQL - 7 years
  • GraphQL - 5 years
  • Leadership - 5 years
  • React - 5 years
  • TypeScript - 4 years
  • Elixir - 2 years

Availability

Full-time

Preferred Environment

React, Ruby on Rails (RoR), Elixir, Large Language Models (LLMs)

The most amazing...

...development I've led is that of an article tweets-parsing pipeline to extract exportable, tangible data such as accidents and business or political events.

Work Experience

Full-stack AI Developer

2024 - PRESENT
Agent Studio
  • Architected and built an Agentic AI Platform with fully customizable LLM-powered workflows.
  • Led the deployment and scaling of a microservices infrastructure using AWS, Docker, and Kubernetes.
  • Developed reusable agents using LangGraph and LangChain for multi-agent orchestration.
Technologies: Ruby, Ruby on Rails 6, Large Language Models (LLMs), Languages, Graph Query Language (GQL), AWS IAM, Amazon Web Services (AWS), React, Python, React Flow, CSS, HTML

Senior Full-stack Engineer

2022 - 2024
Toptal, LLC
  • Developed a Ruby on Rails CMS with a YAML-based DSL for blog management and a React component library.
  • Led a research initiative that improved web vitals to over 95% by optimizing public pages.
  • Conducted research on image optimization, implementing adaptable image cropping with focal points and flexible logo grids.
  • Contributed regularly to the React component library aligned with in-house design systems.
Technologies: React, Ruby, Ruby on Rails (RoR), GraphQL, PostgreSQL, TypeScript, APIs, Full-stack, JavaScript, Back-end Development, Scalable Application, Node.js, CSS, HTML

Software Engineer

2020 - 2022
Medwing.com
  • Contributed across the full stack in React and Ruby on Rails.
  • Worked on a microservice event-based architecture with Dockerized services.
  • Developed new features, optimized and refactored existing services, and ensured stable production environments.
Technologies: Elixir, Ruby on Rails (RoR), Microservices, Apache Kafka, PostgreSQL, Phoenix, GraphQL, React, Go, Amazon Web Services (AWS), APIs, Healthcare, Full-stack, JavaScript, Next.js, Back-end Development, Scalable Application, Python, Machine Learning, CSS, HTML

Lead Software Engineer

2018 - 2020
Sendoso
  • Managed a team to build a warehouse management platform using Ruby on Rails, JQuery, and Bootstrap.
  • Increased team productivity by planning sprints and achieved a 3.97 GPA on Codebeat through regular code reviews.
  • Led security audits, patching vulnerabilities, and maintained a high QA automation coverage of 90%. Conducted technical screenings and supported the onboarding of new hires.
Technologies: React, Ruby on Rails (RoR), Leadership, jQuery, Amazon Web Services (AWS), APIs, Full-stack, JavaScript, Back-end Development, Scalable Application, Python, Node.js, Stripe API, CSS, HTML

Experience

SmartPush

The next-generation mobile ad network that scientifically maximizes advertising ROI for advertisers. Through advanced geofencing and interest-sensing algorithms, SmartPush delivers a context-aware strike with zero collateral damage.

Education

2010 - 2014

Bachelor's Degree in Computer Science

FAST National University of Computer and Emerging Sciences - Lahore, Pakistan

Skills

Libraries/APIs

React, REST APIs, Node.js, Stripe API, jQuery, React Flow

Tools

Amazon Simple Queue Service (SQS), Amazon Simple Notification Service (SNS), AWS IAM

Languages

Ruby, GraphQL, JavaScript, CSS, HTML, Elixir, TypeScript, Python, C++, Go

Frameworks

Ruby on Rails (RoR), Phoenix, Next.js, Android SDK, Ruby on Rails 6

Paradigms

Scalable Application, Microservices, DevOps

Storage

PostgreSQL

Platforms

Amazon Web Services (AWS), AWS Lambda, Apache Kafka

Industry Expertise

Healthcare

Other

Programming, APIs, Full-stack, Back-end Development, Operating Systems, Large Language Models (LLMs), Machine Learning, Leadership, Languages, Graph Query Language (GQL)

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