Portfolio / 2026 Available for opportunities Lahore, PK · UTC+5
Principal Software Engineer

Shahzaib
engineering at scale.

I build scalable SaaS products, distributed backends, and high-performance search systems shipping enterprise-grade software with Ruby on Rails, AWS, and ReactJS.

— Currently
Principal Engineer · Amento Tech
— Email
dev.shahzaib1@gmail.com
— LinkedIn
/shahzaib-ahmed1
Ruby on Rails Distributed Systems Meilisearch AWS ReactJS PostgreSQL Vector Search ClickHouse Redis Ruby on Rails Distributed Systems Meilisearch AWS ReactJS PostgreSQL Vector Search ClickHouse Redis
01 — About Background

Six years of shipping scalable SaaS products, distributed systems, and enterprise-grade backend applications.

My focus is Ruby on Rails, backend architecture, cloud infrastructure, and high-performance search the kind of work where correctness, throughput, and developer ergonomics all matter.

Currently Principal Software Engineer at Amento Tech, previously contributed to talent platforms handling 700M+ profiles, and shipped products across fintech, insurance, education, and fitness.

— Experience
6+ years
Building at production scale
— Scale
700M+
Profiles handled across products
— Data
20TB
Indexed for semantic search
— Products shipped
5+
Major SaaS platforms
02 — Stack What I work with
01 / Languages
Core toolkit
RubyJavaScript PythonSQL
02 / Backend
Backend Engineering
Ruby on RailsNode.jsREST APIs SidekiqDistributed Systems MicroservicesBackground Processing
03 / Frontend
Frontend Development
ReactJSNext.js HTML5CSS3 Tailwind CSSRedux
04 / Search
Search & Data Systems
MeilisearchVector Search Full-Text SearchSearch Optimization Data PipelinesClickHouse
05 / Databases
Data Layer
PostgreSQLMySQLRedis
06 / Cloud
Cloud & Infrastructure
AWSOVH Cloud DockerCI/CD NginxHeroku AWS Lambda
07 / Workflow
Testing & Dev Tools
RSpecGit BitbucketAgile / Scrum JiraGraphQL
03 — Experience Where I've been
Apr 2024— Present
Amento Tech Current
Principal Software Engineer
Mar 2025 — Present
  • Contributing to architectural decisions for scalable SaaS applications
  • Designing and optimizing backend systems supporting large-scale search
  • Working on search infrastructure using Meilisearch and vector search
  • Improving application performance through database optimization
  • Building and maintaining scalable REST APIs
  • Supporting development standards through code reviews
Senior Software Engineer
Apr 2024 — Mar 2025
Contributed to a talent platform handling 700M+ professional profiles recognised for impact and promoted to Principal Software Engineer.
2023— 2024
Senior Software Engineer
Viral Square
Full-stack development with Rails, React, PostgreSQL, GraphQL.
Jul 2021— Sep 2023
Software Engineer
Devsinc
Backend & frontend development, AWS deployments, and team leadership.
Mar 2021— Jul 2022
Associate Software Engineer & Web Trainee
Early Career
Development assistance and continuous learning across the stack.
04 — Selected Work 2021 — Present
01
Synaposet
AI-Powered Lead Generation

Architected a B2B growth platform managing 20TB of data and 700M+ profiles with semantic search and conversational AI.

AI Conversational Agent Semantic Search CRM Integration ClickHouse
02
Scholar Stream
E-Learning Platform

Modern e-learning platform with live and on-demand courses, AI-assisted instructor chat, and integrated payments.

Live Classes AI Instructor Chat Payments LMS
03
Golf Athlete Pro
Fitness & Training

Cross-platform fitness application for golfers delivering personalized workout programs and coach hiring.

Auto-Enrollment Video Training Progress Tracking Coach Hiring
04
BrokerSync
Insurance Middleware

Middleware integration platform connecting insurance agents with multiple carriers through unified APIs.

Multi-Carrier Data Transformation Auth Management
05
ActivityFlow
After-School Management

Comprehensive platform for discovering, managing, and enrolling in after-school activities with end-to-end logistics.

Discovery Payments & Refunds Check-in Background Checks
Let's collaborate

Got something ambitious
in mind?

I'm open to new opportunities whether it's a full-time role, a contract, or a collaboration on something that pushes the limits.

Start a conversation ↗ Connect on LinkedIn