Experience

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  Epal solution

  Aug 2017 - Jun 2020

  Software developer

  𝗣𝗿𝗼𝗷𝗲𝗰𝘁: 𝗦𝗸𝗲𝗳𝗹𝗲𝘅 (𝗢𝗰𝘁. 𝟮𝟬𝟭𝟵 – 𝗢𝗰𝘁. 𝟮𝟬𝟮𝟬) Developed an app to help airlines manage their flights. 📌 Technologies: React Native, TypeScript📌 Responsibilities:• Built mobile app frontend UI• Coded, reviewed, and optimize code 𝗣𝗿𝗼𝗷𝗲𝗰𝘁: 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗪𝗲𝗯𝘀𝗶𝘁𝗲 (𝗢𝗰𝘁. 𝟮𝟬𝟭𝟴 – 𝗢𝗰𝘁.𝟮𝟬𝟭𝟵)(Sep 2017 – Oct 2020)Developed an app to help businesses manage products, orders, customers, and C2C selling.📌 Technologies: Laravel Framework, ReactJS, Webpack, Redis, Docker📌 Responsibilities:• Designed the database structure• Built RESTful APIs• Designed and built frontend UI• Conducted system analysis and design𝗣𝗿𝗼𝗷𝗲𝗰𝘁: 𝗧𝗿𝗮𝘃𝗲𝗹 𝗕𝗼𝗼𝗸𝗶𝗻𝗴 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 (𝗠𝗮𝗿. 𝟮𝟬𝟭𝟴 – 𝗢𝗰𝘁. 𝟮𝟬𝟭𝟴)Develop an application for travelers to help them plan their trip from A to Z, including booking flights, hotels, and scheduling detailed sightseeing itineraries. 📌 Technologies: React Native, TypeScript, NodeJS (AdonisJS)📌 Responsibilities:• Built mobile app UI and Backend for Frontend API• Meet and discuss features with customers. 𝗣𝗿𝗼𝗷𝗲𝗰𝘁: 𝗛𝗮𝗹𝗼𝘇𝗲𝗻𝗱 𝗖𝗥𝗠/𝗘𝗥𝗣 (𝗦𝗲𝗽. 𝟮𝟬𝟭𝟳 – 𝗠𝗮𝗿. 𝟮𝟬𝟭𝟴)Developed an app to help businesses manage internal processes and customer care.📌 Technologies: Angular 2+, Laravel Framework, Docker📌 Responsibilities:• Designed the database structure• Built RESTful APIs• Designed and built frontend UI• Conducted system analysis and design• Coded, reviewed, and optimize code Show less

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  Prinful copy

  Jul 2019 - Oct 2020

  Freelance project

  Developed a B2B e-commerce website using the drop-shipping model.📌 Technologies: ReactJS, NodeJS (AdonisJS)📌 Responsibilities:• Working as Team leader and Backend developer.• Plan and guide the development direction for the team.• Designed the database structure• Coded, reviewed, and optimize code

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  Fpt software

  Aug 2020 - Jun 2022

  Senior software engineer

  Developed an information system to exchange and provide services about vehicles.Project: Car Sales and Auction (Oct 2020 – Jun 2022) 📌 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: NodeJS (NestJS), ReactJS, WebDriverIO📌 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀:• Maintained, added new features, and fixed bugs in various applications.• Reviewed and optimized code, and enhanced E2E testing.• Interviewed and mentored over 10 team members, led the delivery of new features, and achieved recognition as one of the top 10 performers in the 2022 Business Unit.• Developed an interactive React UI library hosted on an S3 bucket, integrated across 10+ host sites, enabling users to search and purchase over 100,000 vehicles.• Integrated 5+ microservices using both RESTful APIs and GraphQL, with Redux and Redux Saga.• Managed the Node.js backend using AWS CDK.• Implemented a tool with the Electron framework, leveraging Regex patterns to update 70% of old Enzyme test cases to React Testing Library, reducing manual effort by 50%.• Addressed issues with E2E tests running on mismatched Chrome driver versions on local machines/runners by creating a Docker container to execute the GridHub image with the correct Chrome driver.• Optimized production build efficiency using Webpack's minimize feature and Babel optimization.• Transitioned CI/CD pipelines from Jenkins to GitHub Actions with in-house runners, significantly reducing costs. Show less

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  Freelancer

  Jun 2022 - Jun 2023

  Freelance project

  Develop a website selling products for men.📌 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: NodeJS (NestJS, MongoDB) 📌 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀:• Maintained, coded new features, and fixed bugs.• Reviewed and optimized code and improved E2E testing.• Collected system/user data to support others in their work.• Developed an anti-fraud feature for the company's payment gateway, significantly reducing the number of invalid transactions.• Created a portal app for efficient management of orders and staff (OMS), eliminating the need for third-party services and reducing costs for the company.• Developed a customizable discount/promotion system, allowing tailored promotions for different types of offers. Show less

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  Merchstack

  Aug 2023 - Jun 2024

  Backend developer

  Developed SaaS platform for e-commerce businesses, boosting customer SEO and revenue. 📌 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: NodeJS (NestJS, GraphQL, Postgres, AWS, OpenSearch, MongoDB) 📌 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀:• Developed a new feature, Search Terms, delivering a Google-like search experience for client websites. This feature significantly improved the search experience for thousands of customers, increased client revenue by an average of 15% per month, and reduced system operating costs by 10% through the use of resource-efficient technologies.• Implemented new CI/CD processes into development workflows and product releases, ensuring smooth operations and minimizing development and release times.• Migrated the database from OpenSearch to ElasticSearch.• Integrated health checks to monitor scheduled jobs for timely detection of downtime.• Implemented BetterStack for tracking errors and performance.• Integrated Cloudflare to enhance security and prevent DDoS attacks.• Wrote unit tests and end-to-end (E2E) tests following the Test-Driven Development (TDD) approach, achieving coverage exceeding 80%.• Used Docker in both development and production environments.• Utilized cache locks along with transactions to prevent 100% of data conflicts between concurrent workers/tasks. Show less

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  Accelerator app

  Sept 2024 - now

  Back end developer