Rohail Butt

Senior Software Engineer

5+ years building enterprise AI platforms, cybersecurity solutions, and scalable cloud architectures. Expert in LLM integration, Zero Trust Networks, and full-stack development—delivering solutions

About Me

A highly accomplished Senior Software Engineer

Rohail Butt

A highly accomplished Senior Software Engineer with over 5+ years of experience in full-stack development, team leadership, and architecting robust software solutions. Proven track record in delivering high-quality applications in cybersecurity, marketing technology, and the hospitality industry.

Expertise in JavaScript, React, Angular, Node.js, Python, and building scalable cloud-native systems on AWS and GCP. Passionate about leveraging technology, including AI and LLMs, to solve complex problems, enhance security, and optimize processes.

Location: Pakistan
Email: rohailbutt411@gmail.com
Phone: +923076497619
Calendly: Book a Meeting

Experience

5+ years of professional software engineering

December 2020 - Present

Senior Software Engineer

INVOZONE | Lahore, Pakistan

  • Led the development of multiple full-stack projects, resulting in an improvement in deployment speed
  • Implemented secure network access solutions through the RevBits Zero Trust Network, enhancing security for remote workers
  • Developed and deployed microservices architecture for enterprise-level applications, reducing system downtime
  • Collaborated with cross-functional teams to deliver software solutions on time, contributing to increase in customer satisfaction
December 2019 - December 2020

Full Stack Engineer

ArtBot | United States

  • Designed and implemented scalable full-stack applications, resulting in an increase in user engagement
  • Integrated third-party APIs to enhance application functionality, improving overall user experience
September 2019 - December 2020

Full Stack Developer

ARSUM'S TECH | Sialkot, Pakistan

  • Contributed to decrease in bug reports through diligent development and testing
  • Scraped and processed data for business intelligence, improving decision-making processes

Skills

Technical expertise across the full stack

Programming Languages

JavaScript TypeScript Python

Frontend Development

React.js Next.js Angular RxJS WebSocket APIs Material UI

Backend Development

Node.js Express.js Nest.js RESTful APIs Sequelize

Cloud & DevOps

AWS Batch AWS ECR AWS S3 AWS Cognito AWS CloudWatch GCP Compute Engine GCP Cloud Run Docker CI/CD GitHub Actions

Database Technologies

PostgreSQL MongoDB SQL NoSQL

AI / Machine Learning

LLM Integration GPT-4o / GPT-5 LangChain RAG (Retrieval-Augmented Generation) Vector Embeddings Fine-Tuning OpenAI API Structured Outputs Prompt Engineering Semantic Search AI Streaming

Security

Zero Trust Networks PAM Zero-Knowledge Encryption MFA SSO

Featured Projects

Enterprise-level solutions and innovations

Mara Solutions

AI-Powered Review Management Platform

Built an enterprise-grade AI platform to automate hotel review aggregation, analysis, and intelligent response generation across 18+ platforms, reducing manual review response time by 65% for over 500 properties.

  • AI-Powered Response Generation: Developed multi-model LLM system (GPT-4o, GPT-4.1, GPT-5) using LangChain for context-aware review responses with brand voice customization and fine-tuning support
  • RAG (Retrieval-Augmented Generation): Implemented "Ask Reviews Anything" feature using OpenAI embeddings and vector similarity search for semantic review retrieval and Q&A
  • Fine-Tuned Models: Created custom fine-tuned GPT models for topic inference and classification, improving accuracy by 40% over base models
  • Smart Snippet Extraction: Built AI pipeline using GPT-4o to automatically extract reusable response snippets from published reviews, enabling consistent brand voice
  • Brand Voice AI: Engineered GPT-5-powered system to analyze sample replies and generate brand voice guidelines with structured outputs (Zod schemas)
  • Topic Classification & Summarization: Implemented GPT-4o-mini for review summarization and topic detection with cosine similarity-based topic merging
  • Real-Time Streaming: Integrated Pusher for live token streaming of AI responses, providing instant feedback to users
  • Translation Service: Built GPT-powered translation system supporting multiple languages with structured output validation
  • Engineered AWS Batch jobs to scrape reviews from multiple platforms and designed embeddable widgets for real-time ratings
React Nest.js LangChain GPT-4o GPT-5 OpenAI API RAG Vector Embeddings Fine-Tuning AWS Batch AWS ECR AWS S3 AWS Cognito PostgreSQL TypeScript

RevBits Privileged Access Management (PAM)

AI-Enhanced Cybersecurity Platform

Led the design and implementation of a unified, multi-module cybersecurity platform to secure privileged credentials, sessions, and access across on-premises, cloud, and air-gapped environments.

  • AI Session Analysis: Built an offline AI model system that analyzes session logs (keystrokes, commands, video recordings) and continuously trains itself to extract actionable insights. Users can query sessions using natural language prompts like "show me users who executed delete commands on SSH servers last week"
  • Self-Learning Model: Implemented an offline AI model that processes session logs, extracts patterns and information, and improves its understanding over time without requiring external API calls
  • Natural Language Query Interface: Developed a conversational AI interface that translates user queries into actionable session analysis, enabling security teams to quickly identify suspicious activities and compliance violations
  • Oversaw the development of seven integrated modules, including Privileged Access, Session, Password, and CI/CD secrets management
  • Implemented a jump-server architecture to prevent direct asset access, enabling video and keystroke session recording for full compliance
  • Developed patented zero-knowledge browser encryption to ensure keys remain client-side, strengthening credential security
Microservices AI/ML Offline AI Models Natural Language Processing Session Analysis Zero-Knowledge Encryption MFA SSO AWS Azure GCP

RevBits Zero Trust Network (ZTN)

Enterprise Zero Trust Security Platform

Engineered a comprehensive Zero Trust platform to replace traditional VPNs with granular, least-privilege access controls, slashing breach risks by 70% while enabling frictionless access for remote teams across global organizations.

  • Auto-Scaling Cloud Architecture: Built scalable infrastructure on GCP (Compute Engine, Cloud Run) with dynamic instance provisioning for ZTN proxies, jump servers, and remote browser instances across multiple regions
  • Remote Browser Isolation (RBI): Implemented containerized browser isolation using Chromium and Firefox, enabling secure web access with malicious site blocking and full session recording
  • Agent-Based Zero Trust Model: Developed lightweight ZTN agents that establish secure tunnels to internal resources without exposing network topology
  • Multi-Factor Authentication: Integrated comprehensive MFA including biometrics (Face ID, Touch ID), U2F security keys, OTP, SMS, and SAML/SSO support
  • Database Explorer: Built secure database access tool supporting PostgreSQL, MySQL, MSSQL, and Cassandra with WebSocket-based real-time query execution
  • Granular Access Controls: Implemented least-privilege access policies with time-based restrictions, IP whitelisting, and resource-level permissions
  • Session Management: Developed comprehensive session control with recording, monitoring, and audit capabilities for compliance
  • Multi-Cloud Support: Integrated with AWS, Azure, and GCP for seamless cloud resource access
  • Designed BYOD-friendly architecture enabling secure access from any device without VPN client installation
Angular TypeScript RxJS Node.js Express.js WebSocket PostgreSQL Redis GCP Compute Engine GCP Cloud Run Docker Chromium Firefox Sequelize Microservices

Open Letter Connect

Enterprise Direct Mail Automation Platform

Developed a comprehensive direct mail automation platform trusted by 10,000+ businesses that seamlessly integrates with CRMs (HubSpot, Salesforce) to automate winning direct mail campaigns, achieving 84% ROI recognition and boosting response rates by up to 40%.

  • CRM Integration & Automation: Built seamless two-way sync with HubSpot and Salesforce, enabling automated workflows that save time and increase efficiency across marketing operations
  • Drag-and-Drop Template Builder: Developed intuitive template builder with customizable designs supporting multiple formats (postcards, personal letters, professional letters, bi-fold/tri-fold self-mailers, real penned letters)
  • USPS Address Verification: Implemented address verification and standardization system achieving 98% deliverability rate, ensuring every mail piece reaches its intended destination
  • Variable Data Personalization: Engineered custom fields and variable data system enabling personalized mailers with client names, property addresses, and tailored messages for maximum engagement
  • Advanced Analytics & Tracking: Built comprehensive analytics dashboard with in-depth campaign tracking, allowing real-time adjustments for optimal results and ROI measurement
  • Scalable Infrastructure: Designed platform with no limits on mailings and no minimum requirements, supporting campaigns from small tests to enterprise-scale bulk prospecting
  • Multi-Industry Support: Developed flexible platform serving diverse industries including Real Estate, Retail, Healthcare, Ecommerce, Education, and various investor segments
  • Clients reported 50% faster campaign execution and 3x boost in response rates through personalized, data-driven mailers
  • Platform recognized by 84% of marketers as providing the highest ROI of any marketing channel
React Nest.js HubSpot API Salesforce API USPS API AWS Batch AWS S3 PostgreSQL GitHub Actions CI/CD TypeScript

Certifications

Professional credentials and achievements

JavaScript (Intermediate)

HackerRank

JavaScript (Basic)

HackerRank

Education

Bachelor's Degree in Computer Science

University of Gujrat, Pakistan

Intermediate in FSc Pre-Engineering

Govt College Daska, Sialkot, Pakistan

Matriculation in Physics

Govt High School Daska, Sialkot, Pakistan

Get In Touch

Let's discuss your next project

Location

Daska, Sialkot, Pakistan

RB

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