Open to opportunities

K Ahmed

@kahmed

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Full-stack software engineer building scalable, secure, high-performance products.

Tunisia

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What I'm looking for

I’m looking for technical challenges where I can build cloud-native, secure, high-performance products—collaborating in Agile teams, owning API and full-stack delivery, and driving measurable impact through testing, optimization, and continuous learning.

I’m a Full-Stack Software Engineer with 3+ years of experience building high-performance and scalable products. I work across front-end, backend, and API developer responsibilities, with strong focus on cloud-native applications, secure architecture, and performance optimization.

In my recent work, I delivered an end-to-end e-commerce platform across web, mobile, and backend APIs, implemented AWS scalability and security (EC2, S3, RDS, CloudFront), and improved performance with 30%+ front-end/back-end speed gains and ~35% lower average API response time. Across projects, I’ve designed secure REST APIs, optimized queries with caching, strengthened reliability through testing and code quality analysis (Cypress, SonarQube), and consistently improved real product metrics like checkout reliability, page abandonment, and production stability.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Cricpayz

Jan 2025 - Present (1 year 5 months)

Delivered an end-to-end e-commerce platform across web, mobile, and backend APIs, supporting 8k+ monthly sessions. Implemented AWS infrastructure (EC2, S3, RDS, CloudFront) and improved front- and back-end performance with 30%+ speed gains and ~35% lower average API response time.

ReactJS NestJS MongoDB Cypress SonarQube AWS EC2 S3 RDS Cloudfront REST APIs Performance Optimization

Full-Stack Software Engineer

Libertacom

Jan 2024 - Jan 2025 (1 year)

Built front-end (React/Next.js) and backend (NestJS/Node.js) features for e-commerce and digital services across 5+ client projects. Designed secure REST APIs and improved performance through query optimization and caching, reducing heavy endpoint latency by ~25%.

ReactJS Next.js NestJS NodeJS MongoDB REST APIs Query Optimization Caching

Software Engineer

Visto Group

Oct 2022 - Jan 2024 (1 year 3 months)

Developed a full-stack HR platform (web + mobile) with secure REST architecture using JWT and role-based access control. Implemented core modules (leave, missions, absences), optimized MongoDB indexing, and improved stability by reducing recurring production issues by ~30%.

ReactJS NestJS React Native MongoDB REST APIs JWT Role Based Access Control Data Indexing

Software Engineer Intern

Visto Group

Sep 2022 - Oct 2022 (1 month)

Developed a web-based task management application and integrated it with REST APIs, supporting Agile project tracking. Improved code quality through testing and bug fixing while building UI components.

ReactJS NestJS MongoDB REST APIs UI Development Testing Agile