Scalable Systems, Built for Growth
Ruby on Rails, APIs, cloud architecture, and production systems designed around real business needs.
Technical Leadership That Delivers
From requirements and architecture to mentoring, code review, sprint planning, and reliable releases.
A Trusted Partner for Global Clients
Clear communication, end-to-end ownership, and maintainable software for international teams.
About Me
Get to know me better
Sohail Karim
Senior Software Engineer & Team Lead
I am a Senior Software Engineer and Team Lead with seven years of professional experience delivering web platforms, APIs, and cloud-backed systems.
My strongest work sits at the intersection of Ruby on Rails, React, and modern backend architecture. I help clients turn business requirements into maintainable products, communicate progress clearly, and lead small teams through planning, implementation, code review, and release.
I am comfortable owning delivery end to end: understanding the problem, shaping the technical approach, mentoring developers, maintaining production systems, and solving complex issues under real project constraints. Based in Lahore, Pakistan, I work effectively with remote international teams and clients.
sohailkarim66@gmail.com
+92 308 6524336
Lahore, Punjab, Pakistan
Skills & Expertise
Technologies and tools I work with
Ruby on Rails
100%Backend
Ruby
100%Backend
REST APIs
95%Backend
Microservices
90%Backend
Elixir
75%Backend
React JS
80%Frontend
JavaScript
85%Frontend
HTML/CSS
95%Frontend
Tailwind CSS
85%Frontend
jQuery
80%Frontend
React Native
50%Mobile
PostgreSQL
95%Database
MySQL
85%Database
MongoDB
80%Database
SQL
95%Database
AWS
90%Cloud & DevOps
Docker
90%Cloud & DevOps
Kubernetes
80%Cloud & DevOps
AWS SQS
85%Cloud & DevOps
RSpec
85%Quality
GitHub
100%Tools
JIRA
90%Tools
Trello
90%Tools
Agile / Scrum
95%Leadership
Team Leadership
90%Leadership
Sprint Planning
95%Leadership
Featured Projects
Some of my recent work
Atlas Law Partners
Web Application
A professional law-firm website rebuilt for stronger SEO, cleaner code quality, and smoother feature delivery.
Bioverge
Fintech
A healthcare venture investing platform with secure payment flows and scalable Rails services for investor participation.
ECS
Ecommerce
A shoe ecommerce platform with Rails APIs, streamlined checkout, and a React Native mobile extension.
EritheiaLabs
Web Application
A company website for an IT services business, including careers workflows and team-led delivery improvements.
Fintech Connector
Fintech
A fintech community platform for innovators and enablers, with multi-step forms and Rails-backed collaboration workflows.
Lahanur
Ecommerce
A multi-category ecommerce platform with custom product experiences and a carefully managed checkout system.
Upcoming Events
Event Management
An event management system for ticket purchases and event operations, led with sprint discipline and code review ownership.
WorkPlace Checkin
Workforce
A workforce attendance and payroll support system with break tracking, time calculation logic, and daily delivery leadership.
Homefront
Automation
An automated ordering platform that connects retailer accounts, parses order history, and syncs insights into a Rails database.
Shopify Product Analytics
Fintech
A Shopify analytics product with Stripe billing, QR-based order tracking, and dashboards for product performance.
Influence.io
Marketing
A customer loyalty platform for merchants, built with React, Backbone.js, and Ruby on Rails.
Proline
Event Management
An event operations platform for large-scale crowd, security, and workforce coordination across complex venues.
UpHex
Marketing
A digital marketing platform for launching and managing client ad campaigns through Google and Facebook APIs.
Work Experience
My professional journey
Wicked Martians
Senior Ruby on Rails Engineer, Team Lead
Nov 2023 – Present Current
Leading development on a digital marketing product as Senior Engineer and Team Lead for a team of 3 developers.
- Own feature delivery across Ruby on Rails and Elixir backends
- Design and implement microservice and event-driven patterns with AWS SQS
- Build responsive interfaces with HTML, CSS, and Tailwind CSS
- Integrate third-party APIs including Google and Facebook
- Manage PostgreSQL and MySQL data models for performance and integrity
- Drive Agile delivery with Trello/Shortcut, Notion documentation, GitHub collaboration, and thorough RSpec/Postman testing
- Mentor developers, review code, and keep releases aligned with product priorities
Southville Solutions
Senior Full Stack Developer
May 2022 – Oct 2023
Delivered full-stack web applications with Ruby on Rails and React.js for production client systems.
- Built frontend and backend features with JavaScript, HTML, CSS, and jQuery
- Worked with PostgreSQL, MySQL, and MongoDB for high-traffic applications
- Designed microservice and event-driven approaches using AWS SQS
- Improved existing systems through analysis, debugging, and code review
- Supported automated testing and large-scale deployments with Docker, Kubernetes, and OpenShift
- Managed milestones from concept through testing and release
Eritheia Labs
Full Stack Developer
Jun 2019 – Apr 2022
Built and maintained Rails/React applications while working directly with customers on progress, feedback, and delivery concerns.
- Developed full-stack features with Ruby on Rails and React.js
- Designed database structures in PostgreSQL and MySQL
- Implemented scalable processing patterns with RabbitMQ, Redis, and AWS SQS
- Deployed applications on AWS with attention to availability and performance
- Delivered scraping/parsing systems and supported Docker/Kubernetes-based releases
- Owned milestones from early delivery through production readiness
Techverx Pvt. Ltd
Associate Software Engineer
Feb 2018 – May 2019
Contributed across the software lifecycle on Rails and React Native products, including legacy modernization and release support.
- Refactored legacy code for maintainability and lower operating cost
- Built applications with Ruby on Rails, React Native, HTML, CSS, JavaScript, and jQuery
- Collaborated with project managers on realistic milestones
- Participated in requirements, implementation, testing, and production releases
- Strengthened code review practices and issue resolution across the team
Awards & Recognition
Highlights from my professional journey
Outstanding Accomplishments — Q2 2021
Recognized by Eritheia Labs for outstanding accomplishments in the Engineering department during the second quarter of 2021. Awarded on 30 July 2021 by Azan Abrar, CEO & Founder, for consistent delivery and professional excellence.
Fresh Skills Award
Team appreciation award from Eritheia Labs celebrating continuous learning and the strength each individual brings to the team. Recognized as a shining star for growth, fresh skills, and making the team proud.
Go That Extra Mile
Awarded by Eritheia Labs for going beyond expectations and contributing as a key individual member of the team. Recognized as a shining star for ownership, effort, and the pride brought to the organization.
Punny Award
Special recognition from Eritheia Labs for that very special employee who always makes clever puns and wordplay — celebrating culture, humor, and the energy brought to the workplace.
1st Place — Cards Bluff
First-place medal from Eritheia Battle Night 2019 in the Cards Bluff competition — a fun company event that highlights teamwork, focus, and friendly competitive spirit.
1st Place — Ludo Double
First-place medal from Eritheia Battle Night 2019 in the Ludo Double competition — recognizing strategy, coordination, and camaraderie during the company games night.
Client Reviews
What clients and partners say about working together
Grateful for Sohail Karim's cloud solutions architecture expertise. AWS became our playground, thanks to his strategic planning. The microservices architecture significantly improved our system's agility. From project management to responsive web design, every service was executed with precision. A true professional who elevates your project!
Exceptional service from Sohail Karim! His full-stack web development expertise exceeded our expectations. Mastery of Docker and Kubernetes ensured a smooth deployment process. The front-end design was visually stunning, and the back-end architecture robust. Collaborating with Sohail was a pleasure, and the results speak for themselves. Truly a valuable partner!
Sohail Karim is a standout senior software engineer! His proficiency in Ruby on Rails and React transformed our project. The collaboration was seamless, and his attention to detail ensured a polished final product. Communication was excellent, making the development journey enjoyable. Highly recommended for top-notch skills and professionalism!
Education
My academic background
COMSATS University
Bachelor’s Degree
Field: Computer Science
2017
Bachelor’s degree in Computer Science with a foundation in software engineering and application development.
Get In Touch
Let's work together on your next project