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Sirine Sarray

@sirinesarray

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Backend Developer at Softylines who improved e-learning API response times by about 40% for a 30K+ student platform.

Tunisia

Message

At Softylines, I support a production e-learning platform used by 30K+ students. I diagnose payment and subscription failures, optimize MySQL queries and REST API flows, and helped improve response times by about 40%.

I used Sentry monitoring to identify an N+1 query issue, then optimized the affected database access pattern to reduce unnecessary queries and API response time in production.

For La Poste Tunisienne, I developed a showcase backend using Strapi and Meilisearch, with multilingual content management, site-wide search, and SEO-friendly content structures.

Earlier at Softylines, I built Express and TypeScript APIs for a platform serving 30 branch offices, introduced Redis caching that improved analytics response times by over 90%, and developed React and TypeScript features for a SaaS comments plugin.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

Softylines

Jul 2024 - Present (2 years 3 months)

Supported a production e-learning platform used by 30K+ students, diagnosing payment and subscription failures, optimizing MySQL queries and REST API flows to improve response times by ~40%, and improving backend stability while continuously shipping new features. Used Sentry monitoring to identify an N+1 query issue, optimized database access patterns, and developed the showcase backend of La Pos

NodeJS Express TypeScript MySQL REST APIs Sentry Strapi Meilisearch Performance Optimization

Full-Stack Developer

Softylines

Dec 2023 - Jun 2024 (6 months)

Built Express/TypeScript REST APIs with MongoDB for a centralized platform managing agents, clients, and operations across 30 branch offices. Improved analytics response times by over 90% by introducing Redis caching for expensive NoSQL aggregations, and streamlined releases through automated CI/CD pipelines within an Agile Scrum team.

Express TypeScript MongoDB Redis REST APIs CI CD Agile Scrum

Frontend Developer

Softylines

Nov 2022 - Nov 2023 (1 year)

Developed a React/TypeScript SaaS comments plugin with customizable themes and user experiences, built role-based moderation dashboards, and optimized the React plugin bundle with Webpack, reducing its size from ~1.2 MB to ~420 KB and cutting initial load time by roughly 60%.

React TypeScript Webpack JavaScript HTML5 CSS SCSS