Open to opportunities

mohsenam User

@mohsenam

Senior backend engineer building scalable, cloud-native REST, microservices, and event-driven systems with Python, Node.js, and AWS.

Iran

Message

What I'm looking for

I’m looking to build maintainable, scalable backend systems in distributed teams—owning REST APIs, microservices, and event-driven architecture with clean architecture/DDD, automated testing, and AWS-ready CI/CD from design to production.

I’m a Senior Backend Engineer with 6+ years designing and building scalable, cloud-native backends. I bring strong expertise in Python and Node.js, with hands-on experience building REST APIs, microservices, and event-driven systems.

I consistently apply clean architecture and Domain-Driven Design (DDD), designing bounded contexts, modular services, and robust domain models. Across projects, I’ve built and refactored backend services with NestJS/TypeScript, split monorepo modules into independent microservices, and implemented repository, aggregate, and domain event patterns.

On the delivery side, I manage full Git workflows with CI/CD, testing, and production-ready deployments—using GitLab CI, Docker, and AWS (ECS Fargate, RDS, Lambda, IAM, VPC, and CDK/IaC). I’ve also developed an event-driven Kafka platform handling millions of messages per day and integrated OpenAPI/Swagger plus Pytest/Jest testing to keep quality and long-term maintainability high.

Experience

Work history, roles, and key accomplishments

Senior Backend Engineer

Procumate

Jun 2025 - Oct 2025 (4 months)

Architected and refactored cloud-native backend systems using NestJS, Node.js, and TypeScript, applying clean architecture and DDD across bounded contexts. Built Python-based automation and REST APIs, implemented microservices with Docker, and deployed production workloads on AWS ECS Fargate with IaC via AWS CDK.

NestJS Node TypeScript Python Microservices Clean Architecture AWS Fargate Docker

Backend Engineer

Bazaro

Apr 2024 - Jun 2025 (1 year 2 months)

Designed and refactored backend services with NestJS, Node.js, and TypeScript using clean architecture patterns for modularity, validation, and dependency injection. Delivered secure REST endpoints with JWT-based authentication and improved reliability through Jest unit/integration testing and performance tuning.

NestJS Node TypeScript Clean Architecture REST APIs JWT Performance Optimization Security Guards Interceptors

Backend Developer

Nova Games

Oct 2023 - Mar 2024 (5 months)

Implemented microservices using Kafka and gRPC and contributed to backend feature delivery. Built an automated testing platform for e2e and integration scenarios to improve CI reliability and developer experience, alongside code review and SonarLint linting.

Kafka gRPC Microservices E2E Testing Integration Testing Code Review SonarLint

Backend Developer (Node)

Nizek

Oct 2022 - Oct 2023 (1 year)

Rearchitected and built a gamification management system for scalability, performance, reliability, and data integrity using secure REST APIs. Developed an event-driven Kafka platform handling millions of messages per day and built microservices and AWS Lambda-based data pipelines for automated workflows and capital orchestration.

NestJS TypeScript Kafka AWS Lambda REST APIs Event Driven Architecture Data Pipelines Microservices

Backend Developer & Reviewer

Osus ERP

Jan 2021 - Oct 2022 (1 year 9 months)

Worked as a code reviewer and backend developer using NestJS and MongoDB, collaborating to improve code quality, design, and testing practices. Architected and implemented microservices and contributed to DevOps tasks using Kubernetes, including multi-level role/permission access.

NestJS TypeScript MongoDB Microservices Code Review Kubernetes

Fullstack Developer

Openmerch.io

Apr 2020 - Jan 2021 (9 months)

Built backend services with NestJS and MongoDB while collaborating with frontend/backend teams to improve design, code quality, and test coverage. Implemented microservices and SOLID principles and developed the frontend using Vue.js.

NestJS MongoDB Vue.Js Microservices SOLID Principles REST APIs Fullstack Development

Backend Developer

Bitbine.com

Jan 2019 - Apr 2020 (1 year 3 months)

Developed backend services using NestJS and MongoDB, implementing queue and event-driven workflows for data processing. Built real-time updates using WebSockets and Server-Sent Events (SSE) and contributed socket programming with SOLID-based design practices.

NestJS MongoDB Event Driven Architecture WebSockets Server Sent Events (SSE)Socket Programming SOLID Principles

Fullstack Developer

Tafriheman

Mar 2018 - Jan 2019 (10 months)

Developed backend services with Express.js and built the frontend using React.js and Redux for a multistore loyalty program. Contributed to overall software architecture and end-to-end feature delivery across the stack.

React Redux Fullstack Development Backend Frontend Architecture Loyalty Program Architecture

Technical Mentor

Volunteer

Mentored developers on tech stacks, career paths, and interview challenges, and supported problem-solving with practical guidance. Educated individuals one-on-one on Node.js/JavaScript/TypeScript and frameworks like NestJS, ExpressJS, and ReactJS.