Developer training
Learn the stack from the people shipping it
Structured programmes in full-stack development — taught live, built around real projects, with code review and interview preparation throughout.
Formats
Four ways to learn with us
Same material and the same instructors — the difference is where and how you attend.
Online live batches
Live, interactive sessions on a fixed weekly schedule. Every session is recorded, so a missed class is never a lost class.
Nationwide · Evening schedules
Classroom batches
In-person teaching and lab sessions at our Lucknow centre, with desk-side mentoring and peer groups.
Lucknow · Weekday and weekend
College programmes
Summer training and internship programmes delivered on campus, shaped around the department's syllabus and placement timelines.
On campus · Cohort-based
Corporate upskilling
Focused programmes for engineering teams moving onto a new stack, built around your codebase rather than generic examples.
On site or remote · Custom scope
Programmes
Current batches
Live online batches run nationwide. Classroom batches run at our Lucknow centre.
15 programmes match the current filters.
Online batches
Live and interactive, with every session recorded.
- (opens in a new tab)Cloud & DevOpsPremium
Microservices, DevOps & Cloud Masterclass
Comprehensive program covering microservices design, containerization with Docker & Kubernetes, CI/CD automation, Terraform (IaC), and advanced AWS cloud architecture deployment.
Microservices · Docker · Kubernetes · AWS · +2
(opens in a new tab)BackendPremiumAI-Powered Java Backend Batch
Cover core java revision, servlet, filters, spring framework, spring boot, generative ai, agentic ai, spring ai and 4 projects.
Java · Spring Boot · Generative AI · Spring AI
(opens in a new tab)Full StackPremiumWebX Batch
Learn HTML, CSS, React, Appwrite, Strapi & AI Integration and deployment by building 8 real-world projects.
HTML · CSS · React · Appwrite · +2
(opens in a new tab)BackendPremiumMaster Spring Boot with Real time Project
Master Spring Boot through this course and build powerful microservices and web apps with ease!
Spring Boot · Microservices · REST APIs · Security
- (opens in a new tab)BackendFree
Spring AI
Learn how to integrate Artificial Intelligence, LLMs, and Generative AI into your Spring Boot applications.
Spring AI · OpenAI · RAG · Chatbots
(opens in a new tab)BackendPremiumBackendX Batch
Complete Java backend program that covers Spring, Spring Boot, Microservices, Event-Driven Microservices (Kafka & RabbitMQ), OAuth, Kubernetes, Docker & Deployment.
Java · Spring Boot · Microservices · Kafka · +1
(opens in a new tab)FrontendPremiumCode NGX Batch
Master Angular from scratch! Includes HTML, CSS & JS revision, in-depth Angular concepts, hands-on coding, and a major project.
Angular · HTML · CSS · JS
(opens in a new tab)BackendPremiumMaster Java Fundamentals With Logic Building
This beginner-friendly course covers the basics of Java programming alongside essential problem-solving skills.
DSA · Arrays · Trees · Graphs
Classroom batches — Lucknow
In-person lab sessions at our training centre.
- BackendPremium
Java Foundation & Logic Building
Beginner-friendly classroom course covering the basics of Java programming alongside essential problem-solving skills.
Java · Variables · Loops · OOPs
BackendPremiumPython Foundation
Start your coding journey with Python. Learn the basics and build a strong foundation in programming.
Python · Variables · Loops · OOPs
- FrontendPremium
JS Foundation
Master the language of the web. Learn JavaScript from scratch and build interactive websites.
JavaScript · ES6+ · DOM · Async/Await
BackendPremiumSpring Boot
Deep dive into Spring Boot for building production-ready applications in a classroom setting.
Spring Boot · Microservices · REST APIs
- BackendPremium
Django Framework
Learn to build robust web applications using Python and the Django framework.
Python · Django · ORM · MVC
- Data SciencePremium
Machine Learning
Step into the world of AI. Learn Machine Learning algorithms and data analysis techniques.
Python · ML Algorithms · Pandas · Scikit-learn
- Data SciencePremium
Data Science
Become a Data Scientist. Learn to analyze, visualize, and interpret complex data.
Data Analysis · Visualization · Statistics
Curriculum
How a programme progresses
Five phases from first principles to interview-ready, with something built at the end of each one.
- Phase 01
Foundations
Language fundamentals, logic building, data structures, Git and the everyday development workflow.
- Phase 02
Core engineering
Object-oriented design, database modelling in MySQL and PostgreSQL, and server-side architecture.
- Phase 03
Full stack
Connecting React and Next.js front ends to Spring Boot or Node.js services, with authentication and real data.
- Phase 04
Production projects
Building and deploying a complete application to cloud hosting, with a CI pipeline and a public repository.
- Phase 05
Interview preparation
Resume and portfolio review, mock technical interviews, and referrals to companies hiring through our network.
Why Substring
What actually makes the difference
Five things we can point at, rather than five adjectives.
The people teaching are the people shipping
Our trainers write production code for client projects. Course material follows the decisions we actually make on delivery work — not a syllabus written once and left alone.
A public track record you can check
Learn Code With Durgesh has published over 1,300 free tutorials to an audience of 400,000+. The teaching is open, reviewable, and has been for years before you contact us.
Online reach, local presence
Live online batches run nationwide, and our Lucknow centre runs classroom batches, college training and internships in person. You can visit us.
Direct access to senior engineers
Small team, no account-manager layer. The person who scopes your project is one of the people who builds it, and answers when something breaks after launch.
Work that outlives the handover
We build on mainstream, well-supported stacks — Java and Spring Boot, React and Next.js, standard cloud tooling — so another team can pick it up without a rewrite.
Alumni
Where our learners have gone on to work
Companies our graduates have joined after completing a programme with us.
- TCS
- Infosys
- Wipro
- HCL
- Accenture
- Capgemini
- Deloitte
- IBM
- Oracle
- Samsung
- Adobe
- Salesforce
- Amazon
- Microsoft
- Flipkart
- Paytm
- Zomato
- Swiggy
- Atlassian
Feedback
In their words
Comments left publicly on our courses and tutorials, quoted as written.
You are really doing a very good work for the upliftment of professionals and students like me. I cracked interviews in MNC after learning many things from your video only.
Prince KhanCourse 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 ShanuSpring Boot programme 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 KumarReact programme You are one of the best teachers sir. I really thought Docker is hard, but now after completing your Docker tutorial my concept is crystal clear.
SNxGamingGDocker tutorial, YouTube Big fan sir. Aap ne mera future bana diya. Aapke course buy kar ke aaj bohot knowledge mili hai. Love from Gujarat.
Shivam PawarCourse student
Admissions
Before you enrol
The questions we are asked most often by prospective students.
Who teaches the programmes?
Engineers from our own delivery team, led by Durgesh Kumar Tiwari. The people teaching a stack are the people building on it for clients.
Do I need prior coding experience?
Not for the foundation programmes — they start from the basics and assume nothing. Advanced full-stack and backend tracks expect you to be comfortable writing code already.
What if I miss a live session?
Every session is recorded and published to your dashboard along with the code, resources and notes, so you can catch up before the next class.
Is there a difference between online and classroom batches?
The syllabus and the projects are identical. Classroom batches add in-person lab time and desk-side mentoring at our Lucknow centre; online batches run live with recordings.
Do you provide a certificate?
Yes — a completion certificate from Substring Technologies, issued alongside the projects you built during the programme.
What does placement support include?
Resume and portfolio reviews, mock technical interviews, interview preparation and referrals to companies hiring through our network. We do not guarantee a job offer.
Not sure which programme fits?
Tell us where you are — student, career switcher, or working developer — and we will point you at the right batch. If none of ours fits, we will say so.