Manish Das, Developer in Kirkland, WA, United States
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Manish Das

Verified Expert  in Engineering

Software Developer

Kirkland, WA, United States
Toptal Member Since
January 16, 2017

Manish has been working for startups since his own "startup" as a graduate of computer science. He's very passionate about new tech and innovation, and is a quick and enthusiastic learner. To date, he has ten years of experience building scalable microservices and web apps and has a good command of all the usual tools and platforms.


Docker, Metabase, Group Policy Management, APIs, CircleCI, Heroku...
Amazon Web Services (AWS), Slim, Sass, Haml, HTML, CSS, Jira, Bitbucket, Git...
Amazon Web Services (AWS), Slim, Sass, Haml, HTML, CSS, GitHub, Git, TeamCity...




Preferred Environment

Jira, Bitbucket, GitHub, Git, Sublime Text, MacOS

The most amazing...

...things he's built are scalable microservice architecture and web app back ends.

Work Experience

Lead Software Engineer

2018 - 2020
  • Joined the startup as a founding engineer and built two services in Ruby on Rails, which helped the company to raise Series A and grow the company from 6 people to 50+ people.
  • Hired, mentored, and provided technical direction and leadership to the engineers.
  • Built a service to monitor Airbnb activities consuming Airbnb's API, which helped boost the company's revenue.
  • Built API authentication system using JWT, authorization, and user policy management.
  • Dockerized a Rails application.
  • Implemented service-level communication using SQS and SNS.
  • Built the entire infrastructure of the engineering leveraging Heroku, PostgreSQL, REST API, CircleCI, Datadog, ScoutAPM, AWS, GitHub, Jira, Metabase, etc.
  • Upgraded two Rails 5 applications to Rails 6.
Technologies: Docker, Metabase, Group Policy Management, APIs, CircleCI, Heroku, Amazon S3 (AWS S3), AWS Simple Notification Service (SNS), Amazon Simple Queue Service (SQS), Datadog, CSS, HTML, JavaScript, React, Ruby on Rails (RoR), Ruby

Technical Lead

2013 - 2018
  • Converted a monolithic app into microservices.
  • Created a REST API for two services.
  • Owned and integrated two back-end Rails services to front-end using EmberJS framework.
  • Led a team of nine developers and conducted sprint planning for the team.
  • Built and maintained the architecture of two back-end services.
Technologies: Amazon Web Services (AWS), Slim, Sass, Haml, HTML, CSS, Jira, Bitbucket, Git, TeamCity, Cucumber, RSpec, CoffeeScript, JavaScript, REST APIs, PostgreSQL, Redis, RabbitMQ, Ember.js, Ruby on Rails (RoR), Ruby

Software Engineer

2011 - 2013
  • Built the initial MVP web app in Ruby on Rails.
  • Managed a team of nine developers and ran sprint planning for the team.
  • Built the architecture for the entire application.
  • Built an admin tool to perform admin-related tasks.
  • Set up the integration build tool using TeamCity.
Technologies: Amazon Web Services (AWS), Slim, Sass, Haml, HTML, CSS, GitHub, Git, TeamCity, Cucumber, RSpec, CoffeeScript, JavaScript, Ruby on Rails (RoR), Ruby

Software Developer

2011 - 2011
  • Designed and implemented a Ruby Gem API wrapper for CloudFactory.
  • Learned TDD and BDD testing and implemented in the API wrapper gem.
Technologies: HTML, CSS, Git, JavaScript, Ruby on Rails (RoR), Ruby


- Built two scalable microservice back-ends in Rails
- Built a RESTful API for them
- Integrated them into an Ember.js front-end stack.


Ruby, SQL, CoffeeScript, JavaScript, CSS, HTML, Haml, Sass, JavaScript 6


Ruby on Rails 4, Ruby on Rails (RoR), JavaScript MVC, Ember.js, Slim


AMQP, ActiveRecord, Sidekiq, Ember Data, Ruby on Rails API, REST APIs, Pundit, API Development, Rails Engines, React


TeamCity, RSpec, Postman, Sublime Text 3, RabbitMQ, Cucumber, Sublime Text, Git, GitHub, Bitbucket, Jira, Amazon Simple Queue Service (SQS), AWS Simple Notification Service (SNS), CircleCI


Component-based Rails Architecture (CBRA), Service-oriented Architecture (SOA), Agile Software Development, Test-driven Development (TDD), Behavior-driven Development (BDD)


MacOS, Unix, Linux, Heroku, Docker, Amazon Web Services (AWS)


MySQL, Redis, PostgreSQL, Amazon S3 (AWS S3), RDBMS, Elasticsearch, PostGIS, Datadog


Ruby Gems, Ruby Performance, Micro SOA, Optimization, Ember CLI, Enterprise Architecture, APIs, Group Policy Management, Metabase

2006 - 2010

Bachelor's Degree in Computer Engineering

Institute of Engineering - Kathmandu, Nepal

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