Hey 👋 I'm Husnain
Principal Software EngineerBackend & Full-Stack EngineerSoftware Solution Architect
Principal Software Engineer with 8+ years building scalable backend systems and SaaS products across fintech, crypto analytics, retail analytics and real-time platforms. I work primarily with Node.js, Ruby on Rails, Vue.js/Nuxt, databases, cloud infrastructure and AI-assisted engineering workflows.
As a Principal Software Engineer, I build backend-heavy full-stack systems with production experience across APIs, payment systems, authentication, database architecture, real-time features and cloud deployments. On the frontend, my strongest experience is with Vue.js and Nuxt, with additional delivery experience in React and Next.js.
View My Work
What I Do
Engineering Services & Capabilities
Backend Architecture & APIs
Scalable Node.js, Express.js and Ruby on Rails backends, REST APIs, microservices, background jobs, WebSockets and performance optimization.
Full-Stack SaaS Development
Production web applications with Vue.js and Nuxt as my primary frontend stack, plus TypeScript, JavaScript, React and Next.js where appropriate.
Fintech & Data Systems
Payment workflows, invoicing, audit trails, high-volume transactions, PostgreSQL/MySQL schema design, Redis, Elasticsearch and reliable data processing.
AI, Cloud & DevOps
OpenAI API integration, agentic engineering workflows, AWS, Docker, CI/CD, Codefresh, Jenkins, Vercel and production deployment practices.
Portfolio
Selected Engineering Work
Selected projects across fintech, crypto, enterprise analytics, real-time collaboration and SaaS systems.
Technical Expertise
Technical Skills
Professional Experience
Principal Software Engineer
Strategic Systems International (SSI)
Lead backend and full-stack delivery for US and UK clients across fintech, crypto analytics and retail analytics, with ownership across architecture, APIs, databases, testing, cloud delivery and engineering standards.
Software Engineer
Codility Solutions
Built and scaled Ruby on Rails applications, implemented role-based authentication, optimized database schemas, delivered real-time functionality and supported reliable production deployments.
Education & Certification
BS Software Engineering
International Islamic University, Islamabad
Bachelor of Science in Software Engineering. CGPA 3.39.
Certified SAFe 5 Practitioner
Scaled Agile
Professional certification in the Scaled Agile Framework.
Experience Across
Companies & Products I Have Worked With
FAQ
Frequently Asked Questions
As a Principal Software Engineer, my strongest backend experience is with Node.js/Express.js and Ruby on Rails. On the frontend I have deeper experience with Vue.js and Nuxt, alongside TypeScript, JavaScript, React and Next.js. I also work extensively with PostgreSQL, MySQL, Redis, Docker and cloud delivery.
My production experience includes fintech SaaS, payment and invoicing systems, crypto analytics, retail analytics, real-time collaboration and social platforms, ERP systems and API-driven products.
Yes. I have more than five years of direct delivery experience with US and UK clients and distributed product teams, including collaboration across engineering, product, QA and DevOps.
Yes. My work covers system architecture, backend APIs, database design, authentication and authorization, automated testing, frontend integration, cloud deployment, CI/CD and production troubleshooting.
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