Edmund Colin - SA / Lead Developer

Edmund Colin

4.9

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Edmund Colin

4.9

Gender

Male

Address

Hanoi, Vietnam

Main expertise

Software Java PHP Python JavaScript DevOps AWS AWS Cloud Data .NET Software Architects Full-stack

Introduction

Edmund Colin possesses extensive experience in the software development process and has been a core team member on large projects. He is eager to gain more experience working with English-speaking customers and is focused on acquiring technical skills to prepare for roles such as bridge engineer, development-operations engineer, or management positions.

Project list

Data Warehouse Infrastructure Development - null

Responsible for developing and maintaining the platforms and frameworks that support a data-driven culture. This includes data ingestion pipelines and the Spark ecosystem. Key components involve building the company-wide data lake and query execution systems such as Presto, Trino, and Redash. In addition, the role requires modeling data streams into various formats like Parquet and cubes and storing them in fast-access systems like Elasticsearch, MySQL, and PostgreSQL to enable data analysts to generate statistical reports. An observer system is implemented for data accuracy and consistency, and collaboration with the microservices team is essential for loading data into the warehouse.

Designing the architecture and data pipelines. Researching and implementing best practices for a data lake.

Technologies: K8s, Unix, S3, Spark, Jupyter, Hive, Docker/Kubernetes, Airflow, Kafka, Debezium and ElasticSearch, Java & python.

Efficient Data Storage and Pipeline Design - null

Designed, implemented, and maintained data models using Ralph Kimball methodology. Developed data pipelines utilizing Airflow and NIFI. Optimized and enhanced data warehouse performance. Defined KPIs to monitor data quality. Collaborated closely with data analysts to derive actionable insights from data.

Researching methods to store data efficiently and cost-effectively. Conducting experiments and laboratory work to improve data storage solutions. Designing robust data pipelines.

Technologies: k8s, Unix, S3/ Spark/ Jupyter/ Hive (big data), Java & Python.

SaaS Market - null

Developed a marketplace that allows all ERP applications for SMEs to integrate easily. It serves as a platform for apps to cross-sell, similar to an app store. Production link: https://saas-market.teko.vn

Designing architecture Creating APIs Training cross-functional teams to adapt to this architecture

Technologies: Docker, k8s, golang/grpc, react (admin_panel), Redis, mysql, Golang/grpc, reactjs

Dino Loyalty Program - null

Developed both on-chain (Node.js) and off-chain (Spring Boot) components along with a React-based frontend for a smart loyalty point system. This system facilitates loyalty point accumulation across multiple merchants and partners, including VNShop, PhongVu, MeatDeli, and SoiBien. It is part of a larger CRM module within an ERP system. Production URLs include: https://vnpoint.vn/ and https://loyalty.teko.vn

Designing the architecture, creating mockup modules, and managing tasks. Training team members and overseeing their activities. Identifying problems within software systems and resolving issues, especially concerning the blockchain stack, including Ethereum V2 and FluxDB.

Technologies: Docker, k8s, Onchain (node), offchain (Springboot), admin_panel (react), Elastic search, fluxdb, ethereum v2, mysql, Java, nodejs, reactjs

Promotion Engine System Version 2 - null

Developed a promotion engine for cross-domain applications such as banking and e-commerce. This system enables customers to use vouchers and coupons, supporting various scenarios like receiving a coupon upon registration and obtaining an additional coupon after using two. Production URLs: https://pes.vnpay.vn, https://pes.teko.vn.

Design architecture. Create mockup modules. Manage tasks.

Technologies: Docker, k8s, golang/grpc, react (admin_panel), Redis, mysql, Golang/grpc, reactjs

ERP Module for Supply Chain and Order Management - null

Developed various modules including supply chain, order management, and accounting. The project is deployed in production and can be accessed at: https://erp-admin.teko.vn

Design a mono-repository architecture for microservices. Train cross-functional teams to adapt to this architecture.

Technologies: Docker, k8s, golang/grpc, react (admin_panel), Redis, mysql, Golang/grpc, reactjs

Front-End Monorepo Development for Multiple Websites - null

Developed a unified UI framework and frontend applications for multiple websites. Key production deployments included phongvu.vn, vnshop.vn, landingpage.teko.vn, and spov2.teko.vn.

Design the monorepo architecture for multiple websites and web applications. Train cross-functional teams to adopt and integrate this architecture.

Technologies: Docker, k8s, Nextjs, UI/UX architect.

Promotion and Price Management System Version 1 - null

System for managing prices and coupons.

Design architecture. Create module mockups. Manage tasks. Train team members. Oversee team activities.

Technologies: Docker, k8s, golang/grpc, react (admin_panel), Redis, mysql, Golang/grpc, reactjs

GitLab CI/CD Implementation for DevOps - null

DevOps/SRE responsibilities for Teko ERP, focusing on continuous integration and delivery.

Design the architecture and automate tools for CI/CD. Train team members and oversee their activities.

Technologies: Docker, k8s, Go tools

Pet Projects: SafeWeb and BDS NFT - null

SafeWeb: A platform for monitoring and controlling internet and app usage. BDS NFT: A blockchain platform for NFTs related to real estate.

Develop modules for SafeWeb. Develop modules for BDS NFT.

Technologies: VM/Linux, Gin FW (go web fw), Revel FW (go web fw)

Dialing Version 2 - null

Developed a web application using PHP to communicate with an Asterisk app (VOIP). The app enables agents to perform telesales and telemarketing through VOIP, functions as a CRM and POS, and offers reporting features. Production URLs: http://login01.dialing.se, http://1login.loandialer.com. Additionally, developed a Perl-based Asterisk application to automatically dial customers and transfer calls to agents.

Business analysis Make recommendations for business adjustments to increase the feasibility of the software Design architecture Mockup module Manage tasks

Technologies: PHP, Asterisk (Perl), DHTML, PHP for web app., Perl for asterisk app.

Healint Migraine Buddy - null

A platform to manage migraines and facilitate communication between patients and doctors. Features a RESTful web service built using the Play Framework in Java.

Get requirements and analyze the business model. Design architecture, conduct coding, and perform code reviews. Train members and oversee their activities. Identify and resolve issues within software systems.

Technologies: Android app / Play webservice, Android app, offline/online, Java ws, amazone elastic cache, google cloud messenging

Electricity Monitoring and OCR System - null

Developed an iOS application for recording electricity consumption and created a C/C++ library for image recognition to convert scanned images to numerical data (OCR application). Also developed a web service (API) and web application for monitoring and displaying metrics.

Architect the system. Gather and analyze business requirements and models. Deliver packages and documentation. Manage tasks using the Scrum methodology. Train and oversee team members' activities. Identify and resolve software system issues.

Technologies: iOS / Phalcon PHP fw, Objective C / Phalcon PHP

EPICSOFT - null

Developed a desktop application named EPICSOFT to analyze food and research cancer. Created a gateway (web application) to populate a database for EPICSOFT, which also serves as a management platform for EPICSOFT projects globally.

Training members and overseeing their activities. Identifying and resolving issues within software systems.

Technologies: Silverlight, dotNET 4, Windows, HTML, asp.NET 4 (MVC2), silverlight for web app., dotNET C# for epicsoft desktop.

Web and Mobile Applications, SMS Gateway - null

Develop web and mobile applications for selling ringtones, images, and games. Develop an SMS Gateway for SMS applications.

Architect, gather requirements and analyze the business model. Design, code, test, and deliver software packages along with related documentation to customers. Train team members and oversee their activities. Identify and resolve issues within software systems.

Technologies: LAMP, Tomcat, Cross-platform, PHP, Linux, MySQL, Jquery1.4 for web app. + C/C++, HTML5 (phoneGap, moSync, Itanium, Sencha) for cross-platform mobile app. Also some J2ME .app, IOS and Android app (reading news of vietnamnet, tuantintuc, ...) + Java, Tomcat, Oracle (SMS Gateway).

Online Shipping Service (OSS) - null

Developed an online web application for shipping services, enabling users to register shipments and track them online. Live version available at: http://www.singpost.com/

Get requirements and analyze the business model. Architecting, coding, testing, and deployment of the application. Training team members and overseeing their activities. Identifying and resolving issues within software systems.

Technologies: iOS / Phalcon PHP fw, Zend Framework 1.10, Sun Solaris 5, Mysql Server 5.2

TomatoCMS and Related Projects - null

Developed a new web application using the Zend framework, based on an existing Joomla database, for the website thethaovietnam.com.vn. The project included implementing high-traffic capabilities, integrating modern features, and leveraging cloud computing. Additionally, further enhancements were made to create TomatoCMS, which includes many advanced features to compete with Joomla and Drupal. TomatoCMS has powered several websites, including thethaovietnam.com.vn, tig.com.vn, and tekciz.com.

Manage a team of 10 members over 1.5 years using Scrum methodology. Architectural design and application pattern development. Gather customer requirements and perform business analysis. Prepare necessary documentation. Deliver the final product.

Technologies: Zend FW, MySQL Server 5.2, DHTML, PHP, Zendfw 1.9, jquery 1.42, CentOS, MySQL server.

TheGioiDieuKy Social Network - null

Developed a social network specifically for children, providing a playful environment where they can engage in games, read stories, and learn subjects like physics and mathematics through interactive experiences. The platform emphasizes performance, maintainability, and supports multiple languages.

Internal project. Need quick implementation. Ensure reliability and stability.

Technologies: Symfony fw, MySQL 5.2, Flash/flex, ajax (RIA app), DHTML, symphony fw 1.4, jquery 1.42, Shell scripting for CentOS.

Mobile Applications: mPlay, mSafe, and GPRS3 - null

Developed several mobile applications including: - mPlay: Allows users to preview demo songs, download them, and set them as ringtones without needing to remember SMS syntax. - mSafe: Provides secure storage for SMS and phonebook entries. - GPRS3: Facilitates automatic installation of 2G configuration files. Additionally, developed a web service (API) to enable mobile apps to connect and retrieve data.

Coding Design Maintain

Technologies: J2ME, LWUIT, Stringfw, Oracle 8, J2ME, LWUIT for mobile app., String fw and Oracle database for web service.

Vinaanh.com - null

Developed a social network for sharing images, featuring functionalities similar to other image hosting sites like Flickr and Picasa. Focused on performance, maintainability, and multi-language support.

Architecture Coding new features Maintaining community

Technologies: Zend FW, MySQL 5.2, Flash/flex, Script.ac.lous, CentOS, MySQL server.

Vimua Online Marketplace - null

Developed a social networking platform for e-commerce with a focus on performance, maintainability, and multi-language support.

Coding Testing Conducting security and performance analysis

Technologies: B2e platform, jquery, real time chat, DHTML, B2e, jquery, Shell scripting for CentOS.

Vihd Streaming Platform - null

Developed a platform for high-quality peer-to-peer video streaming, including a web application and a desktop application utilizing the .NET framework for enhanced video streaming capabilities.

Coding Testing Conducting security and performance analysis

Technologies: IIS, dotnet fw, DHTML, aspx for webapp., C# for desktop app.

ViChat and ViMap - null

A mobile application for chatting, viewing maps, and making friends. Additionally, it includes a web service on the Visky platform.

Coding Design Maintain

Technologies: Visky platform, J2ME, dotNET fw (aspx), J2ME, DHTML, Visky platform.

Visky Social Network for Teachers - null

Developed a social network platform for teachers to share slides, books, and teaching methods, providing support for e-learning.

Testing performance and security of the web application. Coding using Flex for the online slide editor.

Technologies: Symphony FW, MySQL 5.2, Flash/flex, Dojo, DHTML, PHP, Symfony FW 1.4, Dojo

OpenCart Development for HD360.vn (Freelance, 2nd Shift) - null

HD360.vn is an e-commerce platform specializing in the sale of projectors. It supports approximately 500 concurrent users and is integrated with payment gateways including Onepay, Nganluong, and VNPay.

Coding Testing Checking performance and security

Technologies: CentOS, OpenCart 3, PHP 6, PHP, JQuery, CentOS, MySQL server.

OpenCart Freelance Developer (2nd Shift) – thegioidochoi.vn - null

Thegioidochoi.vn is an ecommerce platform focused on selling toys. It supports approximately 1000 concurrent users and integrates with WordPress for blogging. The platform is also integrated with a payment gateway, and the theme is designed to be fast and mobile-friendly.

Coding Testing Checking performance and security

Technologies: CentOS, OpenCart 4, PHP 7, PHP, JQuery, CentOS, MySQL server.

OpenCart Developer (Freelance, 2nd Shift) – Phongvu.vn - null

Phongvu.vn is an e-commerce platform specializing in the sale of computer hardware. It supports approximately 50,000 concurrent users and utilizes Opencart as a headless CMS with a Vue.js frontend.

Project list

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