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Mercer Mettl I/O: Our Unique Platform To Hire And Develop Best Coders

Project-Based Programming Skills Test - Hire Programmers For Any Role and Technology


Role-based Coding Assessment Platform With Unmatched Capabilities

All-In-One Solution

All-in-one solution for all major roles and technologies

Insightful Reports

Real-time, in-depth code analytics with a wide array of parameters

Fully Auto-Graded

Evaluated using fully auto-graded pre-built test-cases

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Innovative Digital Tools to Hire and Develop Top Coders


Build Quality Coding Teams


Save Time and Cost

We Support All Major Roles And All Major Technologies

Comprehensive Coding Environment For Programmers, QA Engineers, Data Scientists, And Many More Roles

Hire Front End Developer

A front-end developer is assessed on his/her ability to:

  • Design web pages using HTML, CSS and JavaScript
  • Use CSS libraries like BootStrap and preprocessors like Sass, LESS and Stylus
  • Work with JavaScript frameworks like Angular, React and Vue
  • Implement responsive design according to the given requirement
  • Test and debug front-end code so that all the elements are in place
  • Use RESTful Services/APIs

Project Environment : Theia IDE

We support all major front-end technologies:

Hire Back End Developer

A back-end developer is assessed on his/her ability to:

  • Develop and code back-end business logic
  • Create functional APIs
  • Implement and use different algorithms and data structures
  • Design and optimize database queries
  • Implement different programming paradigms
  • Work with advanced language-based frameworks

Project Environment : Theia IDE

We support all major back-end technologies:

Hire Full Stack Developer

A full-stack developer is assessed on her/his ability to:

  • Combine front-end and back-end code
  • Work on both client as well as server applications
  • Create and consume APIs
  • Work with SQL/NoSQL databases
  • Implement various architectures such as MVC
  • Write unit test for all tiers of the applications

Project Environment : Eclipse Theia

We support all major technologies for full-stack developers:

Hire Data Scientist

A data scientist is assessed on his/her ability to:

  • Extract, clean, transform and load data sets
  • Wrangle and explore data
  • Identify the underlying relationships or dependencies
  • Visualize data for easier understanding
  • Predict future trend or forecast a drift based on the previous data trends
  • Determine patterns or motive of the data
  • Uncover anomalies in data

Project Environment: JupyterLab

We support all major technologies for data scientists:

Hire DevOps Engineer

A DevOps Engineer is assessed on his/her ability to:

  • Work with Linux systems and perform Linux scripting
  • Automate infrastructure using configuration management tools
  • Manage and maintain source codes
  • Perform continuous integration and testing
  • Virtualize and work with containers

Project Environment: A web-based terminal

We support all major technologies for DevOps Engineers:

Quality Assurance Engineer

Quality Assurance Engineers are assessed on their ability to:

  • Generate test cases to test applications on multiple aspects
  • Program and write scripts to automate the testing process
  • Use different software testing techniques
  • Attain a high degree of test coverage of the source code
  • Co-relate real-time scenarios to software testing

Project Environment: A hackable cloud-based IDE

We support all major technologies for DevOps Engineers:


Database Developer

Database Developers are assessed on their ability to:

  • Write DDL and DML queries based on the requirements
  • Create stored procedures, functions and triggers
  • Identify the errors in the database and correct then
  • Optimize queries to boost performance of applications and db engine
  • Test the data from the databases to ensure it is not corrupted

Project Environment: A cloud-based database design tool

We support all major technologies for Database Developers:


Assess Hands-on Project Building Capabilities With Our Role-based Skills Assessment Platform

We Have Years Of Experience In Hiring, Testing, And Reskilling Coders For Major Clients

Assess All Major Coding Skills Through Our Technical Questions And Simulators

Explore Coding Skills Tests

Why Are We Considered the Best?

Universal coverage of technical skills

Support for Front-end, Back-end, Database, Data science, and all major coding roles

Fully auto-graded

Evaluated using fully auto-graded pre-built test-cases

Robust architecture

A robust and scalable cloud-based platform

Detailed reporting

In-depth code analytics with wide parameters covered in the reports

Code Completion

Faster coding enabled by contextual code completion and parameter information


Easier debugging with visibility of the state of code variables

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