Open to opportunities

Sultan Butt

@sultanbutt1

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Senior Full Stack Engineer building scalable SaaS with React, Next.js, React Native, and Nest.js microservices.

Pakistan

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What I'm looking for

I’m looking for a Senior Full Stack role building scalable SaaS and distributed systems—React/Next, NestJS microservices, AWS, and strong performance/observability. I’m open to remote US/EU teams that value engineering excellence, security, and CI/CD.

I’m a Senior Full Stack Engineer with 8+ years designing scalable SaaS platforms and distributed systems. I specialize in system design, microservices architecture, caching strategies, and backend performance—consistently improving speed and reliability.

At Readyhubb, I lead architecture for a multi-tenant SaaS serving 5,000+ active users. I improved performance by 30%+ and reduced API latency by 40% through Redis caching, query optimization, and lazy loading, while integrating Stripe subscriptions, Twilio WhatsApp notifications, and Cloudinary media optimization.

I bring strong engineering discipline across CI/CD, Dockerized deployments, and observability (Sentry, Datadog), maintaining 85%+ automated test coverage. I’m driven by building secure, high-availability systems with clear monitoring and measurable outcomes.

Experience

Work history, roles, and key accomplishments

Current

Frontend Lead / Senior Engineer

Current

Readyhubb

Jul 2023 - Present (2 years 11 months)

Led architecture for a multi-tenant SaaS platform (Next.js + React Native) serving 5,000+ active users. Improved performance by 30% and reduced API response time by 40% using Redis caching, query optimization, and lazy loading.

Next.js React Native NestJS Microservices Redis CI CD Observability

Senior Software Engineer

Ocubis Ltd

Apr 2022 - Jun 2023 (1 year 2 months)

Designed and implemented scalable full-stack systems using React, React Native, Node.js, and GraphQL. Optimized database queries to improve backend performance by 35% and increased automated test coverage to 80%+ using Jest.

React React Native Node GraphQL REST APIs PostgreSQL Jest Database Optimization

Senior Software Engineer

UI Centric

Jan 2021 - Mar 2022 (1 year 2 months)

Managed the full API lifecycle including versioning, deployment, monitoring, and performance tuning. Delivered high-availability systems and implemented performance optimization that reduced infrastructure costs.

REST APIs API Versioning Deployment Monitoring Performance Tuning CI CD Error Tracking Testing High Availability

Full Stack Engineer

IParagons

Jan 2019 - Dec 2020 (1 year 11 months)

Built production-ready mobile and backend systems using React Native, Node.js, and MongoDB. Optimized MongoDB queries to improve system reliability and collaborated with DevOps teams to streamline CI/CD deployments.

React Native Node MongoDB CI CD System Architecture Query Optimization REST APIs Backend Reliability Engineering Deployment

Education

Degrees, certifications, and relevant coursework

University of Gujrat

Bachelor of Software Engineering (BSSE), Software Engineering

2015 - 2019

Activities and societies: Relevant coursework: Data Structures & Algorithms, Database Systems, Distributed Systems, Software Architecture, Operating Systems, Computer Networks.

Bachelor of Software Engineering (BSSE) program at the University of Gujrat (2015–2019), covering core topics in software and computer science.