Esmatullah is available for hire
Hire EsmatullahEsmatullah Arifi
Verified Expert in Engineering
Software Developer
Colchester, United Kingdom
Toptal member since October 18, 2021
Bio
Esmatullah has eight years of experience as a full-stack web developer. He has worked both independently and as part of a team. His expertise lies in application development within various domains such as finance, commerce, education, and community development. Esmatullah specializes in Laravel, PHP, C#, ASP.NET Core, Vue, React, and integrating 3rd-party APIs into applications.
Portfolio
VJ Technology Limited
SQL, Vue, Laravel, PHP, JavaScript, HTML, CSS, Full-stack, eCommerce...
Glencadia Corporation
PHP, Laravel, Laravel Livewire, Stripe, AWS IAM, Amazon EC2, Amazon S3 (AWS S3)...
OGUR LLC
PHP, Laravel, JavaScript, SQL, jQuery, MySQLi, Amazon Web Services (AWS), Ajax...
Experience
Availability
Part-time
Preferred Environment
MacOS, Windows, Linux, PhpStorm, MAMP, XAMPP, Microsoft Visual Studio, REST API Clients, GitHub, Ubuntu
The most amazing...
...web app I've developed is the online portal for a university, enabling over 200 teachers and 2,500+ students to connect during the lockdown.
Work Experience
Full-stack Developer
2023 - 2024
VJ Technology Limited
- Created a user-friendly online eCommerce platform that lets many sellers set up unique store spaces, helping them stand out and manage easily.
- Crafted thorough tests for every app feature, ensuring smooth updates and bug-free enhancements ahead.
- Designed the app and database for easy code reuse, clear organization, no data repeats, and reliable data accuracy.
Technologies: SQL, Vue, Laravel, PHP, JavaScript, HTML, CSS, Full-stack, eCommerce, Full-stack Development, REST APIs
PHP Developer
2022 - 2023
Glencadia Corporation
- Overhauled the reservation system for a dog camp, rectifying extensive payment and confirmation glitches.
- Engineered a new system with advanced reservation functionalities, including modular per-night rate calculation and seamless integration with Stripe for instant payment confirmation.
- Implemented an intuitive availability calendar, enabling administrators to selectively allow pet stays based on customer types.
- Introduced tour booking and comprehensive services management features, resulting in a rapid increase in reservation and payment volumes within days.
- Created a user-friendly dashboard that empowers administrators to easily set prices and define rules, streamlining the process of managing and adjusting rates for the dog camp.
- Implemented standardized email templates and a robust email delivery tracking system to facilitate effective communication, ensuring reliable and organized correspondence with pet owners and stakeholders.
- Developed numerous other cutting-edge features, resulting in a substantial boost to the efficiency and effectiveness of the reservation and payment processes at the dog camp.
Technologies: PHP, Laravel, Laravel Livewire, Stripe, AWS IAM, Amazon EC2, Amazon S3 (AWS S3), Amazon Elastic Block Store (EBS), MySQL, REST APIs, DocuSign, Stripe API, Bootstrap, JavaScript, jQuery, HTML, CSS, Cloud, Design Patterns, Unit Testing, Blade Templates, Background Jobs, Cron, Redis, CI/CD Pipelines, Full-stack Development
Lead PHP/Laravel Developer
2022 - 2023
OGUR LLC
- Developed a robust blue-collar job portal application, resulting in a significant increase in job listings and a growing user base within the first month of launch.
- Led a team of three developers, improving code quality by 20% and reducing bug count by 15% through regular code reviews and technical guidance.
- Managed server infrastructure, optimizing resource allocation and implementing auto-scaling, resulting in a 40% reduction in server costs and ensuring 99.9% application uptime.
- Implemented efficient CI/CD pipelines, reducing deployment time by 30% and enabling seamless integration and continuous delivery of new features.
- Collaborated with cross-functional teams, delivering high-quality features on time and within budget and contributing to project planning and strategy discussions with innovative ideas and insights.
Technologies: PHP, Laravel, JavaScript, SQL, jQuery, MySQLi, Amazon Web Services (AWS), Ajax, Architecture, REST API Architecture, Database Design, Amazon S3 (AWS S3), Amazon EC2, Amazon Route 53, Amazon Elastic Block Store (EBS), Laravel Livewire, Web Development, Leadership, Webhooks, AWS CloudFormation, Cloud, Design Patterns, Unit Testing, Startups, Blade Templates, Background Jobs, Cron, CI/CD Pipelines, Full-stack Development
Back-end Developer (PHP and Laravel)
2022 - 2022
HitPay Payment Solutions
- Integrated an eCommerce CMS and accounting software into the HitPay system, incorporating platforms such as Shopify, WooCommerce, QuickBooks, Xero, Sage Intacct, and NetSuite.
- Implemented the ETL (Extract, Transform, Load) tool using Singer, enhancing data processing and management capabilities within the system.
- Enabled seamless connectivity between various eCommerce and accounting platforms, improving efficiency and streamlining data transfer and synchronization processes for the HitPay system.
Technologies: PHP, Laravel, SQL, MySQL, Singer ETL, ETL, ETL Tools, APIs, Vue, React, Angular, Relational Databases, Amazon Web Services (AWS), DevOps, AWS DevOps, Design Patterns, Heroku, Startups, Blade Templates
Full-stack Developer
2021 - 2022
CauseLabs
- Developed a reconciliation script for donations between Salesforce API and Stripe API for an enterprise donation platform, which reduced the process duration from over four hours to seconds and was completely automated as background jobs.
- Localized the React application with a WordPress back end using WPML, which helped the product owner have a single codebase for multiple regions.
- Developed 10+ analytical graphs and calculations for health software, which provided a great demonstration of data for any purpose usage.
Technologies: PHP, Laravel, React, Vue, Headless Software, Stripe API, Salesforce API, MySQL, Jira, Stripe, OAuth, OAuth 2, MySQLi, Webhooks, AWS CloudFormation, Design Patterns, Blade Templates, Background Jobs, Cron, Figma, Full-stack Development
MIS Specialist
2018 - 2021
Independent Directorate of Local Governance
- Integrated the ODK platform with the project MIS and real-time synchronization of the received surveys. This helped decrease the time of previous manual data entry from 4-5 days to one day minus the manual entry.
- Tracked and fixed bugs using GitHub Issues and GitHub projects.
- Developed time-range complex automated reports, which reduced manual work by 100% and helped senior management with decision making.
- Delivered training sessions on MIS system code, database schema structure, and project workflow to team members, which accelerated the tasks' completion by 30%.
- Created several new modules and functionalities into MIS as needed, preventing delays in related tasks in the field and meeting deadlines by over 90%.
- Integrated the ERP system with project MIS for data exchange, which helped staff access the data easily.
- Handled dozens of data transfers between Microsoft SQL Server to MySQL and vice-versa during my assignment.
Technologies: ASP.NET Core, ASP.NET Core MVC, ASP.NET Web Forms, ASP.NET, PHP, Laravel, CodeIgniter, C#, MySQL, Microsoft SQL Server, SQL, Stored Procedure, SQL Stored Procedures, Full-stack, React, JavaScript, HTML, CSS, jQuery, Git, GitHub, Git Repo, .NET, .NET 5, MVC Design, C#.NET, Technical Leadership, Source Code Review, Technical Hiring, Task Analysis, Interviewing, Material UI, .NET Core, Ajax, DataTables, jQuery DataTables, Web Development, Database Design, Leadership, Cloud
Senior Web Developer
2018 - 2021
Dawat University
- Developed an attendance module that monitors the students' attendance daily and automates students' enrollment for exam and attendance scores, reducing hours of work to seconds.
- Checked Git pull requests for code quality, performance, and algorithm, which minimized errors and performance issues in production.
- Integrated video conferencing to the system for online classes, which helped the university keep the classes going during the pandemic.
- Transferred the old system (MS Excel) based data to MySQL with 100% accuracy and integrity.
- Tracked and fixed bugs using GitHub Issues and GitHub projects.
- Guided and technically coached the newly recruited developers in the app's application technologies and coding standards. All module code is 100% identical and can be easily debugged.
Technologies: Vue, Vuex, PHP, Laravel, JavaScript, TypeScript, HTML, CSS, PHP 7, PHP 5, MySQL, MariaDB, Amazon EC2, Amazon S3 (AWS S3), REST APIs, Git, GitHub, Git Repo, jQuery, Back-end, Front-end, Technical Leadership, Amazon Web Services (AWS), LAMP, XAMPP, MAMP, Source Code Review, Task Analysis, HTML5, DataTables, jQuery DataTables, Web Development, MySQLi, Architecture, REST API Architecture, Database Design, Amazon Route 53, Leadership, Webhooks, Cloud, Blade Templates
Full-stack Web Developer
2015 - 2021
Freelance
- Built 10+ CMS websites with full admin dashboard and analytics.
- Developed more than five portfolio websites in different domains.
- Made an app for warehouse stock and sales and helped the management of the business save costs and time.
Technologies: Node.js, React, Vue, Angular, ASP.NET Core, ASP.NET, ASP.NET Core MVC, ASP.NET MVC, REST, REST APIs, C#, PHP, Laravel, CodeIgniter, JavaScript, HTML, CSS, jQuery, TypeScript, Bootstrap, Bootstrap 3+, Amazon Web Services (AWS), cPanel, Plesk, Parallels Plesk Panel, Front-end, Back-end, Azure, .NET, Microservices, HTML5, MySQLi, Architecture, Database Design
Database Developer
2015 - 2018
Dawat University
- Developed a management system with five modules to cover the functions of all departments in the university.
- Transferred all old format physical data to the newly developed system with 99% accuracy and integrity.
- Automated the gradings and result announcements, which reduced the time from more than a week to one day.
- Integrated MikroTik RouterBOARD with the system for better security and access control.
Technologies: PHP, Laravel, Vue, jQuery, MySQL, HTML, CSS, JavaScript, Amazon Web Services (AWS), Full-stack, APIs, JSON API, JSON REST APIs, Front-end, Back-end, HTML5, SDKs, PHP 4, MySQLi, Architecture, Database Design, Microsoft Access
Experience
Banking App for a Currency Exchange Business
A Laravel-based app for currency exchange business. Bank account opening and transactions like deposit, withdrawal, transfer, and currency exchange are the main parts of this application. This app is developed to calculate profit and loss at the end of the day and record the transactions.
Tourism Package Booking App
A Laravel-Vue-based application for booking POS and management is a custom interface for Rezdy (an online booking system for tours and activity) platform. Agents of the company can book a tourism package, send invoices, charge the customer, and prepare required analytical reports using this application.
University Learning Management System
Developed a Vue- and Laravel-based app, which helps the university to connect 200+ teachers with 2,500+ students during the lockdown and they shared educational materials and resources through this application and held video conferences.
API Web App for ODK
An ASP.NET Core web API enables users to receive the survey data from ODK. It uses its endpoint set in ODK server API services and adds received JSON-type data to Microsoft SQL Server to be processed and used for report generation and analysis.
Project MIS for Citizens' Charter Nationality Program
This project is an ASP.NET Web Forms and ASP.NET Core MVC web application. All project activities are processed through this application. Data gathering from the field, analyzing data, and generating analytical reports are done in every project activity. My contribution was the development of dozens of new modules and serving as the technical guide for teammates.
Booking App for a Wedding Hall
A Laravel-based app that provides easy booking management for wedding halls with payment records, guest log, and estimation generating for cooks based on food menu selected by guests. It also provides analytical reports based on various data.
Education
2014 - 2018
Bachelor's Degree in Computer Science
Rana University - Kabul, Afghanistan
Certifications
DECEMBER 2021 - DECEMBER 2023
HIPAA Awareness for Business Associates
HIPAATraining.com
Skills
Libraries/APIs
jQuery, Vue, React, JSON API, Vuex, REST APIs, Stripe, jQuery DataTables, Stripe API, Salesforce API, Node.js
Tools
PhpStorm, MAMP, Microsoft Visual Studio, Android Studio, Git, GitHub, Plesk, Parallels Plesk Panel, Vue CLI, Bitbucket, GitLab, DataTables, Microsoft Access, Amazon Elastic Block Store (EBS), Cron, Jira, Stripe Checkout, AWS CloudFormation, AWS IAM, Figma
Languages
PHP, C#, HTML, CSS, JavaScript, SQL, HTML5, PHP 7, PHP 5, Stored Procedure, C#.NET, PHP 4, PHP 8, TypeScript, GraphQL, Java
Frameworks
ASP.NET Core MVC, ASP.NET Web Forms, Laravel, Bootstrap, ASP.NET Core, Angular, ASP.NET, CodeIgniter, ASP.NET MVC, Bootstrap 3+, Vuetify, .NET, .NET 5, .NET Core, Vanilla JS, Laravel Livewire, Material UI, OAuth 2, Tailwind CSS
Paradigms
Object-oriented Programming (OOP), REST, MVC Design, REST API Architecture, Database Design, Microservices, ETL, DevOps, Unit Testing, HIPAA Compliance, Design Patterns
Platforms
MacOS, Windows, Linux, XAMPP, Google Chrome, Amazon EC2, cPanel, Amazon Web Services (AWS), LAMP, Twilio, Heroku, Azure, Ubuntu, WordPress, Docker
Storage
Databases, Microsoft SQL Server, MySQL, Database Administration (DBA), MariaDB, Amazon S3 (AWS S3), SQL Stored Procedures, JSON, MySQLi, Relational Databases, Redis
Other
Software Engineering, Data Structures, Management Information Systems (MIS), REST API Clients, ODK, Full-stack, APIs, JSON REST APIs, Git Repo, Back-end, Front-end, Technical Leadership, Source Code Review, Technical Hiring, Interviewing, Ajax, API Design, Integration, API Integration, Amazon Route 53, Web Development, Background Jobs, Webhooks, DocuSign, Startups, Blade Templates, Full-stack Development, Software Requirements Specifications (SRS), Software Project Management, User Experience (UX), Task Analysis, Headless Software, SDKs, OAuth, Architecture, Leadership, Singer ETL, ETL Tools, Cloud, Containers, HIPAA Electronic Data Interchange (EDI), CI/CD Pipelines, AWS DevOps, eCommerce
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