Abduqahhor Muhamadjonov
Helping startups and businesses launch great software, grow high-performing teams, and bring ideas to life with scalable, elegant engineering.
About Me
I am a Lead Software Engineer with over 7 years of experience in backend and full-stack development. I help startups and companies design scalable architectures, automate complex workflows, and ship high-quality products. I have led cross-functional teams, mentored developers, and delivered mission-critical features across industries including e-commerce and healthcare. My focus is on solving real-world problems through clean, testable code, smart integrations, and collaborative product thinking. Currently, I lead engineering efforts at U-WIN Platform, working on large-scale marketplace platforms like gobozor.uz and tut.uz.
Skills & Expertise
Programming Languages
- Ruby
- JavaScript
- TypeScript
Frameworks & Libraries
- Ruby on Rails
- Node.js
- Express.js
- Fastify
- React.js
- Next.js
- Redux
- Tailwind CSS
- Bootstrap
API Design & Integration
- GraphQL
- REST APIs
- Apollo Client
- WebSockets
- ActionCable
Databases & Caching & ORMs
- PostgreSQL
- MySQL
- MongoDB
- Redis
- Elasticsearch
- ActiveRecord
- Mongoose
- Prisma
Architecture & Patterns
- Microservices
- TDD
- DDD
- Design Patterns
DevOps & Deployment
- Docker
- Cloud66
- DigitalOcean
- AWS (S3, EC2)
- Vercel
- CI/CD
- GitHub Actions
- CodeShip
Authentication & Security
- Devise
- Doorkeeper
- JWT
- OAuth2
- Session-based Auth
Analytics & Marketing
- Google Analytics 4
- Google Tag Manager
- Yandex Metrica
- Appsflyer
- X-Partner
Testing & Tooling
- RSpec
- Rubocop
- Jest
- React Testing Library
- Git
Soft Skills
- Team Leadership
- Mentorship
- Problem-solving
- Product Thinking
- Cross-team Communication
- Agile / Scrum
Career
Lead Software Engineer @ U-WIN Platform
May 2024 – PresentProjects: tut.uz, gobozor.uz
Leading engineering for the U-WIN platform, focused on marketplace infrastructure, service integrations, and team enablement.
- Led technical improvements for Cody.mn’s legacy system — adapted core backend for operating in Uzbekistan
- Integrated 10+ services including Click, Payme, Uzum Nasiya, Fargo, Meest, Soliq API, GA4, Meta API
- Reduced server infrastructure costs 16x via Vercel optimization, job worker refactors, and cloud resource audits
- Built and mentored a high-performing engineering team across backend, frontend, and mobile
- Designed microservices using Node.js, Fastify, and Prisma with monorepo + Docker architecture
- Implemented GA4, Meta CAPI, and custom instrumentation for marketing and event tracking
- Improved observability via Logtail, structured error logging, retry logic, and webhook validation
- Strengthened security with firewall rules, encrypted secrets tooling, and IP-based controls
- Maintained 100% test coverage and CI/CD using RSpec, RuboCop, GitHub Actions
- Integrated Alibaba 1688 APIs to automate dropshipping logistics and sync workflows
- Promoted to Lead Engineer and granted full infra/partner access; invited on international business trip within 3 months
Tech Stack:
- Ruby
- Rails
- Node.js
- Fastify
- TypeScript
- React
- Next.js
- React Native
- PostgreSQL
- Redis
- Elasticsearch
- Sidekiq
- Docker
- GitHub Actions
- Vercel
- AWS
- DigitalOcean
- GA4
- Meta CAPI
- Click
- Payme
- Uzum Nasiya
- Meest
- Fargo
- 1688 API
- RSpec
- Rubocop
- WebMock
- VCR
- FactoryBot
- Monorepo
- Microservices
- DDD
- TDD
Full Stack Software Engineer @ Genex Laboratories
Jul 2024 – Nov 2024Contributed to development of a medical SaaS platform for managing lab workflows and patient data.
- Developed GraphQL APIs using Ruby on Rails and Doorkeeper JWT
- Built frontend interfaces with Next.js, Tailwind, and TypeScript
- Wrote backend and frontend tests with RSpec and React Testing Library
- Integrated Strapi CMS and deployed via Cloud66 and Vercel
Tech Stack:
- Ruby
- Rails
- GraphQL
- TypeScript
- Next.js
- Tailwind CSS
- PostgreSQL
- Doorkeeper
- Strapi
- Cloud66
- Vercel
- RSpec
- React Testing Library
Ruby on Rails Developer / Software Engineer @ Gap Intelligence Inc (OpenBrand)
Mar 2019 – Nov 2023Maintained backend systems and internal tooling for product analytics and pricing intelligence.
- Built and maintained 200+ data parsers using Mechanize and Watir
- Contributed to internal platforms: eCOM, gAPI, and sales dashboards
- Created React-based visual analytics tools and QA screenshot tooling
- Implemented CI/CD with GitHub Actions, CodeShip, and RSpec
Tech Stack:
- Ruby
- Rails
- Mechanize
- Watir
- React
- Redux
- RSpec
- PostgreSQL
- MySQL
- Redis
- Elasticsearch
- Sidekiq
- Docker
- CodeShip
- GitHub Actions
- AWS
- DigitalOcean
- GA4
Head of Tashkent Representative Office @ Gap Intelligence Inc (OpenBrand)
Nov 2022 – Dec 2023Managed local operations and served as the primary liaison with HQ in the US.
- Reported office performance and handled financial/accounting updates
- Maintained team morale and internal culture initiatives
- Led talent acquisition and team growth in Tashkent
- Handled conflict resolution and ensured cross-team alignment
Tech Stack:
- Team Management
- Hiring
- Cross-team Leadership
- Remote Collaboration
- Operations Reporting
Course Author @ DasturLab
Mar 2024 – PresentCreating Ruby programming content with a strong focus on real-world application and OOP principles.
- Published beginner-friendly Ruby course for DasturLab
- Currently authoring intermediate/advanced Ruby course with architecture and patterns
Tech Stack:
- Ruby
- OOP
- TDD
- Course Writing
- Curriculum Design
Web Developer Intern @ Education Standard Consulting Group
Jan 2018 – May 2018Joined as an intern to support website maintenance and backend development.
- Worked with Ruby, JavaScript, and Node.js on internal tools
- Fixed bugs and contributed to feature rollouts under mentorship
- Gained full-stack experience in a production environment
Tech Stack:
- Ruby
- Node.js
- JavaScript
- HTML
- CSS
Let’s Connect
I’m always open to new opportunities, collaborations, or just a good conversation about building great products.