Khalil Laleh
Senior Backend Developer at Rentman
Amsterdam, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolKhalil Laleh is a Senior Backend Developer based in Amsterdam with over a decade of professional experience and a programming journey that began in 2001. He blends deep Laravel expertise with modern front-end frameworks (Vue, Angular, React) and Docker-based deployment, shipping large refactors and performance improvements across backend and full‑stack scopes. At Studocu he drove a 35% response-time improvement, authored 250+ PRs, and led database and Core Web Vitals optimizations; earlier roles included building search scoring with Elasticsearch and teaching performance best practices as a lead. An active open-source contributor, Khalil has improved the Laravel core and Illuminate database components by adding eager-loading aggregate functions and fixing relation/primary-key issues, signaling a focus on efficient data modeling and query optimization. With advanced degrees in mechatronics and a background spanning frontend, backend and infrastructure, he pairs systems-level thinking with hands-on delivery.
10 years of coding experience
9 years of employment as a software developer
Associate's degree Computer Software Engineering, Associate's degree Computer Software Engineering at Bu-Ali Sina UniversityMaster's degree Mechatronics Robotics and Automation Engineering, Master's degree Mechatronics Robotics and Automation Engineering at Semnan UniversityBachelor's degree Computer Software Engineering, Bachelor's degree Computer Software Engineering at Nabi Akram
Stackoverflow
1,188reputation
396kreached
33answers
3questions
relationship
top-5%
Github Skills (21)
eloquent10
laravel-mix10
laravel10
eloquent-orm10
php10
relationship9
application-framework9
app-framework9
sql9
database-design9
web-framework9
architectures8
phpunit8
architecture8
unit-testing7
Programming languages (12)
Github contributions (5)
laravel/framework
Oct 2020 - Nov 2021
Laravel is a web application framework with expressive, elegant syntax.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 22 PRs, 78 comments in 1 year 1 month
Contributions summary:Khalil made multiple contributions focused on enhancing the Laravel framework, specifically adding new functionalities related to database queries and eager loading. These changes included the introduction of `withColumn()`, `loadAggregate()`, and various aggregate methods like `loadMax`, `loadMin`, `loadSum`, and `loadAvg`, all aimed at improving query efficiency and feature richness. Additionally, the user addressed issues related to primary key handling and made modifications to existing methods like `has()` and `getRelationCountHash()`, demonstrating a focus on the underlying database interactions and relation management.
laravelphpframework
illuminate/database
Oct 2020 - Jun 2021
[READ ONLY] Subtree split of the Illuminate Database component (see laravel/framework)
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 commits in 7 months
Contributions summary:Khalil primarily focused on enhancing the Illuminate Database component, specifically adding functionality to support aggregate functions (min, max, sum, avg) for eager loading and subselect queries. They introduced new methods like `withColumn()`, `loadAggregate()`, and related aggregation methods to the `QueriesRelationships`, `Model`, and `Collection` classes. Additionally, they fixed a primary key issue and modified methods for has() and getRelationCountHash to improve functionality and prevent counter changes.
databaselaravelsubtree
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