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Full Stack Engineer with 4+ years of experience building end-to-end products across React/Next.js frontends and Node.js/NestJS backend services. I design PostgreSQL data models and APIs, implement caching and background jobs, and build scalable systems for real-time and event-driven workflows. I have delivered remotely for European teams in Ireland and Germany, taking products from schema and API to production UI. My work spans SaaS, healthcare, AI-powered voice/media pipelines, and gaming systems—focused on performance, reliability, and clean architecture.…Full Stack Engineer with 4+ years of experience building end-to-end products across React/Next.js frontends and Node.js/NestJS backend services. I design PostgreSQL data models and APIs, implement caching and background jobs, and build scalable systems for real-time and event-driven workflows. I have delivered remotely for European teams in Ireland and Germany, taking products from schema and API to production UI. My work spans SaaS, healthcare, AI-powered voice/media pipelines, and gaming systems—focused on performance, reliability, and clean architecture.

Ali Haider

Full Stack Developer, Back-End Developer, Software Engineer, +2

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Full Stack Engineer with 4+ years of experience building end-to-end products across React/Next.js frontends and Node.js/NestJS backend services. I design PostgreSQL data models and APIs, implement caching and background jobs, and build scalable systems for real-time and event-driven workflows. I have delivered remotely for European teams in Ireland and Germany, taking products from schema and API to production UI. My work spans SaaS, healthcare, AI-powered voice/media pipelines, and gaming systems—focused on performance, reliability, and clean architecture.…Full Stack Engineer with 4+ years of experience building end-to-end products across React/Next.js frontends and Node.js/NestJS backend services. I design PostgreSQL data models and APIs, implement caching and background jobs, and build scalable systems for real-time and event-driven workflows. I have delivered remotely for European teams in Ireland and Germany, taking products from schema and API to production UI. My work spans SaaS, healthcare, AI-powered voice/media pipelines, and gaming systems—focused on performance, reliability, and clean architecture.

Available to hire

Full Stack Engineer with 4+ years of experience building end-to-end products across React/Next.js frontends and Node.js/NestJS backend services. I design PostgreSQL data models and APIs, implement caching and background jobs, and build scalable systems for real-time and event-driven workflows.

I have delivered remotely for European teams in Ireland and Germany, taking products from schema and API to production UI. My work spans SaaS, healthcare, AI-powered voice/media pipelines, and gaming systems—focused on performance, reliability, and clean architecture.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Work Experience

Senior Software Engineer (Contract) at Holisto Systems

November 1, 2025 - Present

Built backend services and APIs for a multi-tenant, cloud-native compliance platform covering employee management, audits, checklists, surveys, and IoT temperature monitoring using Node.js and Prisma. Migrated legacy DAO services to Prisma ORM, reducing data-access boilerplate and improving maintainability. Developed event-driven microservices on a pub/sub messaging layer with idempotent, retry-safe handlers to decouple compliance workflows from the core API for independent scaling and higher throughput. Managed AWS infrastructure as code with Terraform (API Gateway, ECS) and Nginx, supporting production deployments and operational improvements. Shipped full-stack features (React interfaces, Node APIs), expanded automated React test coverage, and reviewed pull requests to maintain code quality.

Backend Engineer at Earendel Technologies

April 1, 2025 - March 31, 2026

Designed system architecture, database schema, and crowdfunding and healthcare APIs for the CrowdCare platform using TypeScript, NestJS, PostgreSQL, and Redis. Architected payment, subscription, and digital-wallet systems with Stripe and TypeORM, including secure authentication and authorization and payment workflows supporting 2,000+ active subscribed users in production. Built real-time communication infrastructure with Socket.IO, Twilio, and Firebase push notifications for the CrowdCare Android and iOS apps, deployed on AWS (Elastic Beanstalk, S3) behind Nginx.

Backend Developer at TZone

March 1, 2024 - March 31, 2025

Architected a competitive tournament platform using Node.js, NestJS, MySQL, AWS S3, and Docker. Built a game-agnostic ELO rating engine and matchmaking system powering rankings, leaderboards, and performance tracking. Integrated identity verification services for user validation, fraud prevention, and fair-access controls. Optimized media processing and the CI/CD pipeline with Docker multi-stage builds, cutting container size by 80%, and ran backend services behind an Nginx reverse proxy. Designed backend services, database models, and background job processing for tournament lifecycle and player progression supporting thousands of concurrent tournament operations.

Associate Backend Developer at Alright Tech Pvt. Ltd.

August 1, 2022 - February 29, 2024

Developed AI-powered SaaS platforms using Node.js, TypeScript, Python, OpenAI, and ElevenLabs APIs. Built payment, subscription, and marketplace systems with Stripe, PayPal, PostgreSQL, and MongoDB. Implemented real-time messaging and media processing workflows, reducing manual content generation effort by over 70%. Led Slick Magic from client discovery and R&D through architecture to production, building the Node.js backend and an AI-powered media generation pipeline with OpenAI, ElevenLabs, FFmpeg alongside a Next.js frontend.