Learn to code.
Build real projects.
Get hired immediately.
Industry-led online and offline classes in Java, React, MERN, and Python. Stop watching isolated tutorials and start building production-ready applications.
Top Companies Our Graduates Work At
Our graduates are making an impact at leading tech companies worldwide.
See Substring Technologies in Action
Discover how we build cutting-edge software solutions and shape the future of technology through our expert training programs.
Technologies We Master
We use the latest and most robust technologies to build scalable solutions.
From Learning to Placement
A clear path from day one to your dream job. Here's how we get you there.
Enroll & Onboard
Pick the right course for your goals. We help you choose whether you're a beginner or looking to level up.
Learn from Experts
Live classes, recorded sessions, and 1-on-1 doubt support from engineers who work in the industry.
Build Real Projects
No toy apps. You build production-grade projects that go straight into your portfolio and GitHub.
Interview Preparation
Resume reviews, mock interviews, DSA practice, and system design prep — everything you need to crack interviews.
Get Placed
Our placement cell connects you with 50+ hiring partners. We don't stop until you land your offer.
Why Choose
Substring?
We don't just teach coding; we shape careers. Our holistic approach combines technical depth with professional grooming to create complete software engineers.
Industry-Level Mentorship
Learn directly from senior engineers and architects from top tech companies.
Real-World Projects
Work on live projects and build a portfolio that stands out to recruiters.
Career Support
Resume building, mock interviews, and job referrals to help you get hired.
Modern Tech Stack
Master the latest tools and technologies used by top startups and enterprises.
High-Quality Code
Learn best practices, clean code architecture, and scalable design patterns.
1:1 Support System
Personalized guidance and doubt clearing sessions to ensure your success.
Solutions We Deliver
We offer a comprehensive range of software services to help your business grow and succeed in the digital age.
Web Development
Custom websites and web applications built with modern technologies like React, Next.js, and Node.js.
App Development
Native and cross-platform mobile applications for iOS and Android using Flutter and React Native.
Backend Systems
Scalable and secure backend architectures using Microservices, Spring Boot, and Cloud technologies.
Cloud Solutions
Cloud infrastructure setup, migration, and management on AWS, Azure, and Google Cloud Platform.
AI & ML Integration
Integrating Artificial Intelligence and Machine Learning models to make your applications smarter.
DevOps Services
Streamlining development and operations with CI/CD pipelines, containerization, and automation.
Our Impact in Numbers
Real results that speak louder than words.
Real Stories from Our Students
Join thousands of successful graduates who have transformed their careers with Substring.
"You are really doing a very good work for the uplifment of professionals and students like me. I cracked interviews in MNC after learning many things from your video only."
Prince Khan
Student
"Excellent Spring Boot course! Durgesh sir's mentorship is top-notch. Concise, clear, and highly informative. A must for anyone looking to master Spring Boot quickly."
Kumar Shanu
Spring Boot Student
"Big fan sir. Aap ne mera future bana diya. Aapke course buy kar k Aaj bohot knowledge mili hai. #future save. Love from Gujarat."
Shivam Pawar
Student
"You are the One of the best Teacher Sir. I really think Docker is hard But Now After Completed your Docker Tutorial my concept is Crystal Clear."
SNxGamingG
Docker Student
"I can't express enough how transformative this React tutorial has been for me. It's engaging, thorough, and practical. Don't miss out on this opportunity to master React!"
Gulshan Kumar
React Student
More than just a training institute. A community.
We bridge the gap between academic learning and industry expectations. Through rigorous hands-on training, live projects, and dedicated mentorship, we turn passionate learners into professional software engineers.
Meet The Founder
Durgesh Kumar Tiwari
Software Engineer & Educator
Frequently Asked Questions
Everything you need to know about our courses and mentorship.
Join Our Community
Be part of a growing network of developers. Learn, share, and grow together across all our platforms.
Get in Touch
Have a question or want to discuss a project? We'd love to hear from you. Reach out to us directly or visit us.
Visit Us
Substring Technologies,
633/D/P256 B R Dubey Enclave,
Dhanwa Deva Road Matiyari Chinhat,
Lucknow, UP, INDIA 226028
Email Us
contact@substringtechnologies.com
tech.substring@gmail.com
Call Us
+91-9839466732
Send us a Message
Fill out the form below and we'll get back to you on WhatsApp.
Ready to level up your engineering career?
Join thousands of developers who have transformed their careers through our industry-leading curriculums and mentorship.