Guide on Acing Ruby on Rails Technical Interviews
This post presents critical areas that have been carefully selected to have at your fingertips before approaching your next Ruby on Rails Technical interview.
2
Nsikan Sylvester
Mentor
(354 reviews)
US$15.00
For every 15 mins
665
Sessions/Jobs
ABOUT ME
Senior Full Stack & AI Engineer
Senior Full Stack & AI Engineer
Detail-oriented professional with 8+ years of experience in Software Engineering and AI Engineering. Seeking to contribute to high-impact teams by bridging robust system architecture with cutting-edge AI implementation.
I have a proven track record in architecting high-concurrency systems across Ruby on Rails, MERN, and Rust.
Currently deep-diving into the AI Development Track, with a focused expertise in AI Model Development, Agentic Workflows, Retrieval-Augmented Generation (RAG), Machine Learning (ML), and fine-tuning AI models (using techniques such as LoRA and Parameter-Efficient Fine-Tuning (PEFT) techniques), and working with vector databases.
I am passionate about the Strategic application of AI to solve complex architectural challenges and achieve core business goals.
English
West Central Africa (+01:00)
Joined April 2018
EXPERTISE
8 years experience | 61 endorsements
I've built several React app for large-scale clients deploying to Google App Engine, Heroku and...
I've built several React app for large-scale clients deploying to Google App Engine, Heroku and...
6 years experience | 41 endorsements
I have built back-end services with Node. Specifically Nest.js and Express JS.
I've been part of team that built and deployed an EMR(Elec...
I have built back-end services with Node. Specifically Nest.js and Express JS.
I've been part of team that built and deployed an EMR(Electronic Medical Record) with Nest.js Backend, TypeScript, Postgres and React/Redux.
6 years experience | 86 endorsements
I have built a lot of projects with React and related technologies.
I have built a lot of projects with React and related technologies.
8 years experience | 80 endorsements
I have grounded experience building websites and webservices with rails.
I have grounded experience building websites and webservices with rails.
3 years experience
I have built an impressive project with Angular.
I have built an impressive project with Angular.
5 years experience | 19 endorsements
I mentored extensively on C++ Data Structures and Algorithm, writing games and AR solutions.
I mentored extensively on C++ Data Structures and Algorithm, writing games and AR solutions.
7 years experience | 28 endorsements
I have built several rails app and rails api services. deployed to heroku, nginx servers etc.
I have built several rails app and rails api services. deployed to heroku, nginx servers etc.
REVIEWS FROM CLIENTS
(354 reviews)
Sherri Vogel
September 2025
he was incredibly patient with my questions and was able to help me super efficiently and solve my coding issue. i'm really grateful to Nsikan!
Ernie Brown
August 2025
A+
A real pro.
Easy to work with.
Excellent experience.
Peter Crawford
February 2025
Very knowledgable and patient. Got the issue straight away and proceeded to the solution.
Richard Harrison
November 2024
I have had him work on my saas app, and this time, he worked on my Wordpress site! thanks!
Richard Harrison
November 2024
great to work with again!
Richard Harrison
November 2024
Will work with again!
Joseph Mai
October 2024
Nsikan is awsome! he is very patient and determined in helping! I am very pleased with his trouble shooting! I Highly recommend and I will be using him again when the problem arises!
Christoph Rehage
August 2024
Hired Nsikan for a job creating a complex Photoshop Javascript. It turned out to be rather difficult, and it took a while, but with the help of some people on Adobe Forums, we were able to complete the script. Nsikan was patient and hard-working and never gave up. Recommended!
mia
August 2024
helpful to me and with mentor you can talk through your understanding with support and effective help
Christoph Rehage
June 2024
I gave Nsikan a very hard task, and he worked quickly and diligently on it and made sure we got a result that was satisfactory. I will definitely hire him again. Thanks, Nsikan
SOCIAL PRESENCE
626 Reputation
0
7
17
Best way to Validate HTTP parameters in Rails
This post exposes what is considered as the most elegant way to handle complex HTTP parameters in rails.
Best ways to resolve programming issues
In this post, we state the best behavioral and actionable ways to resolve programming issues. This is just the basic but foundational pattern to resolving your code-related issue professionally.
1
EMPLOYMENTS
FULL-STACK ENGINEER/MENTOR
ZEDEK INC,
2022-10-01-Present
Full-Stack Engineer and Community Mentor using JavaScript, Typescript, React, and Redux toolkit.
Accomplishments</strong...
Full-Stack Engineer and Community Mentor using JavaScript, Typescript, React, and Redux toolkit.
Accomplishments
- Built an e-commerce marketplace front-end using Typescript, React, and Redux toolkit.
- Conduct live lectures to the students in the Zedek Ed learning community weekly.
- Manage distributed teams located in my country.
Python
TypeScript
React
View more
Python
TypeScript
React
Redux
View more
Mentor
Codementor.io
2021-05-01-Present
Mentoring on C++, Ruby, JavaScript, JavaScript, NodeJS, Ruby on Rails, ReactJS, HTML/CSS, Relational Databases, and Code Review.
<p...Mentoring on C++, Ruby, JavaScript, JavaScript, NodeJS, Ruby on Rails, ReactJS, HTML/CSS, Relational Databases, and Code Review.
Accomplishments
● Provide extensive mentorship to mentees on the following technologies: ● C++, Ruby, JavaScript, TypeScript, NodeJS, Ruby on Rails, React, HTML/CSS, Relational Databases, Code Review ● Game Development using C++, React, etc. ● Contracted to firms on projects revolving around my area of expertise: namely, Ruby/Rails, C++, NodeJS, React, HTML/CSS, Vanilla JavaScript, TypeScript, AWS, AJURE, Heroku, Data Integration, etc.
Ruby
HTML/CSS
C++
View more
Ruby
HTML/CSS
C++
SQL
Ruby on Rails
Node.js
jQuery
Database
TypeScript
React
JavaScript
View more
Full-Stack Developer
WajuSoft
2022-07-01-2022-08-01
- Implement and test backend API endpoints.
- Integrate APIs into the front end.
- Implement and test backend API endpoints.
- Integrate APIs into the front end.
SQL
Node.js
PostgreSQL
View more
SQL
Node.js
PostgreSQL
TypeScript
React
Redux
NestJS
View more
PROJECTS
SmartUp AppView Project
2020
Leaning Management System and School management system, allowing school to automate all their day to day activities including virtual cla...
Leaning Management System and School management system, allowing school to automate all their day to day activities including virtual classes, automated quizz, tests and exam grading and report card compilation. etc.. Helps students to learn by watching course videos, solving practice questions, taking tests and exams created by their schools. Allows schools to manage their entire learning process, creating classes, assigning educators, and students. Allows parents to track the activities of their kids. I built the back-end API with ruby on rails and front-end with React
Ruby
Ruby on Rails
Git
View more
Ruby
Ruby on Rails
Git
PostgreSQL
Heroku
React
Redux
Electron.js
Materialize css
View more
Crest NGView Project
2020
Ecommerce service for Lokoja City, Nigeria.
Ecommerce service for Lokoja City, Nigeria.
HTML/CSS
WordPress
WooCommerce
View more
HTML/CSS
WordPress
WooCommerce
JavaScript
View more