Zack Siri

Rising Codementor

US$25.00

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First 15 mins free for your first session

ABOUT ME

Building towards a Fair and Open World

One of the things I love waking up to in the morning is fresh ideas for solving business problems. I've been hired to solve many kinds of problems from building small internal tools for companies all the way up to real time car-rental platforms to custom video streaming solutions, to building entire fintech platforms from scratch.

I consider myself a polygot. I work with multiple types of languages and platforms on a daily basis and continue to gain deep understanding of their strengths / weaknesses. I have coached / helped many non-technical founders all the way to helping them build platforms that generate real revenue.

My favorite technologies for development are Elixir, Ruby and Javascript. I currently run a platform that enables people to deploy apps to their own servers easily https://instellar.app

I have also learned to embrace DevOps and have helped companies setup their own deployment pipeline that other developers use to deploy their apps. Some of the technologies I swear by for DevOps are LXD / Terraform / Ubuntu and Alpine Linux

English

Bangkok (+07:00)

Joined February 2019

EXPERTISE

Elixir

5 years experience

I currently run an online school that has it's own video streaming capability. This is all built in Elixir, everything from uploading vid...

I currently run an online school that has it's own video streaming capability. This is all built in Elixir, everything from uploading videos to the actual fast delivery of high resolutin videos is powered by the tech built using Elixir and Phoenix Web Framework and Plug Library. I adopted Elixir since it was version 1.4 and Phoenix was version 1.2. Elixir's true strenght is in it's concurrency / parallelism capability using the Actor Model. Instead of thinking about concurrency in primitives like Threads, Mutexes and Semaphores I can think about everything in terms of processes. If I need something to run concurrently I just use Elixir's processes and I don't have to worry about how all that is managed since the BEAM VM takes care of everything.

Ruby on Rails

7 years experience

I've built many business applications for clients in the past. Things from internal tools that have a few users to online e-commerce plat...

I've built many business applications for clients in the past. Things from internal tools that have a few users to online e-commerce platforms that have 100s of thousans of users generating real revenue. Having a deep level of understanding of Ruby on Rails is why I can build Rails apps that are clean, well tested and performant. I've also been hired by companies to train their employees to learn Ruby on Rails. One of the major reasons businesses love rails is the quick turn-around time to providing a business solution. Rails app have the advantage that developers don't need to make nonsensical decisions that are irrelevant to the project. Decisions like project structure and which libraries to use are generally not important. This allows Rails developer to focus on solving real business problems with real bottom-lines. This is one reason why I would still recommend Rails to most businesses that need something tailor made and quick.

Ruby Ruby on Rails

React

3 years experience

I picked up React since version 14. Once I could harness the power of React building front-end apps was never the same again. I fell in l...

I picked up React since version 14. Once I could harness the power of React building front-end apps was never the same again. I fell in love with React because of what I could do with it. If you would like to take a look at an example react app I've built you can head over to www.codemy.net. This is a feature rich learning platform with things like animation, video streaming, complex nested routing, complex state management. With React you can build extremely rich user-friendly experiences that is difficult to achieve with server rendered solutions. If you have a problem that needs a rich user-interface React is the way to go. The ability to import other people's public components can help businesses launch their product quickly which can be crucial to the life of the product.

JavaScript MobXRouter5

JavaScript

6 years experience

Built many rich single page applications using react / webpack. I currently maintain an open-source template https://github.com/frontojs/...

Built many rich single page applications using react / webpack. I currently maintain an open-source template https://github.com/frontojs/template for launching JavaScript projects. JavaScript ecosystem is extremely fast moving. Things change very quickly and as a result it's difficult to keep up. This is why I maintain my own boilerplate repo so my clients don't have to pay me to 'configure' a javascript project, I can boot up a project in a couple of minutes and focus on building whats truly essential to solving real business problems. I also built an abstraction layer on top of MobX to make it easy for building single page applications that retrieve data from Restful endpoints https://github.com/frontojs/connect

Es6 React Babel

Es6 React Babel Webpack HTML/CSS

Phoenix Framework

2 years experience

Phoenix is the Web Framework to use when working with Elixir Language. It's the equivalent of Rails in Ruby. It can help businesses get s...

Phoenix is the Web Framework to use when working with Elixir Language. It's the equivalent of Rails in Ruby. It can help businesses get started building performant real-time applications. If a business requires a lot of idle connections (chat applications). Or applications that have a lot of soft-realtime features (IoT, presence tracking, real-time notifications). I would recommend Phoenix any day of the week.

Elixir

DevOps

3 years experience

I've built continuous integration / continous deployment workflows for companies that need an automated deployment workflow. Having a f...

I've built continuous integration / continous deployment workflows for companies that need an automated deployment workflow. Having a fully automated and easy to maintain infrastructure is critical to companies that want to ship features to their users fast. I've helped companies reduce the time to market by using things like LXD / Terraform to power the deployments of multiple apps and microservices.

AWS Lxd Terraform

AWS Lxd Terraform Google Cloud Platform Alpine linux Ubuntu

Heroku

1 year experience

I've worked with many clients who use Heroku. Everything from already having an existing application all the way to setting everything up...

I've worked with many clients who use Heroku. Everything from already having an existing application all the way to setting everything up from scratch. I know the ins and outs of heroku so I can help my clients get the most from it. Having a single unified interface for maintaining the lifecycle of an application can help reduce overhead. When clients are starting out and have a small team I generally recommend they use Heroku since it allows them to get more done with less head count. Once the team grows having a nice strategy to switch away from Heroku can also be crucial.

Continuous Deployment Continuous Integration Configuration management

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE

GitHub

eventful

🎟 Powerful event tracking library for Ecto

Elixir

docker-ruby-node

Dockerfile for building ruby and node base image using alpine

Stack Overflow

151 Reputation

Community Posts

Ruby on Rails API Authentication

If you are building any kind of API with Ruby on Rails you are going to have to handle authentication if you want to secure your endpoints.

JavaScript Promise API Basics

Promise object represent a task that will eventually be completed. It offers many wonderful features and api that make it easy to deal with tasks that will take an indefinite amount of time to complete. Things like network calls, querying the database, or doing anything that might be intensive like rendering lots of items, should use promise.

EMPLOYMENTS

CTO

DeeMoney

2019-04-01-2022-11-01

I'm currently the CTO at DeeMoney. My responsibility was to build the platform that powers all of DeeMoney's suite of produc...

I'm currently the CTO at DeeMoney. My responsibility was to build the platform that powers all of DeeMoney's suite of products. This includes a core banking layer, KYC engine and various other modules that enable the Money Transfer Business. DeeMoney is a licensed entity which means our technology is constantly audited and is compliant with the highest standards. I also built the tech team that develop, maintains and operates the platform that powers DeeMoney.

React

Elixir

Phoenix Framework

React

Elixir

Phoenix Framework

Interim CTO

Drivehub Company Limited

2017-01-01-2018-07-01

Helped client build existing Platform powered by Ruby on Rails and React, and setup hiring pipeline.

Ruby on Rails

React

Ruby on Rails

React

Senior Developer

Oozou

2016-07-01-2016-12-01

Helped client build Ruby on Rails Backend with React Front-End

Ruby on Rails

React

Ruby on Rails

React

PROJECTS

Codemy.netView Project

Codemy.net

2019

Online video streaming platform and forum system for anyone who wan'ts to learn to code.

React

Elixir

Phoenix Framework

React

Elixir

Phoenix Framework

DriveHubView Project

Drivehub Co., Ltd.

2018

Online car-rental marketplace.

Ruby on Rails

React

Ruby on Rails

React