Open to opportunities

Rana User

@ranauser2

Message

Senior full-stack engineer specializing in scalable MERN fintech solutions.

Pakistan

Message

What I'm looking for

I seek senior engineering roles where I can build scalable cloud-native SaaS, improve reliability through CI/CD and observability, and collaborate cross-functionally to deliver measurable business impact.

I am a Senior Full-Stack Engineer with over 5 years of experience building scalable web and fintech SaaS platforms using the MERN stack, Node.js, and modern front-end frameworks. I focus on creating responsive user experiences and designing robust RESTful and GraphQL APIs that support high-throughput transaction volumes.

At my current role I led development of a cross-border fintech platform, delivering a 40% speedup in transaction processing, a multi-currency IBAN system handling 10,000+ daily transactions, and backend optimizations that cut API response times by 50%. I also deploy and maintain cloud infrastructure on AWS and automate CI/CD to improve uptime and reduce release time.

I prioritize secure, maintainable systems—implementing OAuth2/JWT authentication, comprehensive error handling and monitoring, and test automation with Jest/Chai. I enjoy collaborating with product, design, and QA teams to deliver measurable improvements in engagement, reliability, and revenue.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack Engineer

Current

Txend

Jan 2023 - Present (2 years 8 months)

Built a cross-border fintech SaaS platform using Node.js, Express and MongoDB, speeding transaction processing by 40% and enabling 10,000+ daily transactions with zero service delays.

Node MongoDB RESTful APIs AWS Docker Microservices JWT

Full-Stack Engineer

Creatix Digital

Jan 2021 - Jan 2023 (2 years)

Built a healthcare SaaS with Next.js, React and Node.js that increased patient engagement by 35% and improved server response time by 45% through AWS optimizations.

Next.js React Node AWS Stripe OAUTH2 Chart.Js CI CD GitHub Actions

Associate Web App Developer

Venturenox

Jan 2019 - Jan 2021 (2 years)

Helped build scalable MERN apps, improving load speeds by 30% and reducing request failures by 25% through robust backend validation and responsive React UIs.