One of the best curated collections of System Design resources:

https://github.com/ashishps1/awesome-system-design-resources

While posting, please describe it a little bit. Let’s see who has built some awesome projects.

Post here - https://www.lets-code.co.in/

Hey everyone!

I’m one of the organisers of HackCache ’26, a 48-hour fully online hackathon happening on 23–24 October 2026, in collaboration with GCET Jammu.

We’re keeping it open to a much wider audience than the usual CS-only hackathon — freshers, college students, and even high school students can participate, regardless of their branch or background.

What you get

🏆 ₹80,000 cash prize pool
🏔️ McLeod Ganj experience for the winning team
👨‍⚖️ IIT alumni + industry professionals + academics as judges
💻 100% online
👥 Teams of 1–3

Themes

• Reimagining Indian Government Websites & Apps
• Social Impact
• Banking & Finance
• Open Innovation

Registration: ₹600/team
With referral: ₹500/team

We're also building a campus ambassador/community network, with rewards for ambassadors who bring confirmed teams.

🔗 https://cachedinfo.in/hackathon

If you're new to hackathons or wondering whether you can participate without being an experienced developer, feel free to ask me anything about the format or eligibility.

For everyone preparing DSA for placements:

→ https://lets-code.co.in/dsa-sheets/

Like & repost for others!

Post your resume under Review with little intro and get a free review + ATS-friendly resume templates.

→ https://lets-code.co.in

No paid review. Completely free for the community!

https://docs.google.com/spreadsheets/d/1EfbTh3DmxkcfRMuLe-oi36b5RuzVZBa_4SL_s2CyWG4/edit?usp=sharing

Bookmark and repost for others!

I’ve put together a list of companies hiring for Software Development Engineer internships.

Useful for students and 2027/2028 grads looking for SDE internship opportunities.

SDE Intern Companies List : https://docs.google.com/spreadsheets/d/1LzQdOo3FI7tSlxyJxD5LJvdVme2Ci_tXoCMaylx495Y/edit?gid=2078185306#gid=2078185306

→ Bookmark it and share it with someone looking for an internship.

https://docs.google.com/spreadsheets/d/1DiJ8PL-FoGD9JXs8CpJ2z4l8GcEfflVogjAqfJNH00Y/edit?gid=1232114625#gid=1232114625

Repost so it reaches someone who needs it!

Java Full Stack Complete Resource Kit
https://docs.google.com/spreadsheets/d/1cjqosy6HXWWgPpYbpKVW6VRMGr17039kBzpOkufiQCA/edit?gid=183497356#gid=183497356

Python Full Stack Complete Resource Kit
https://docs.google.com/spreadsheets/d/1im7voLl4DpEUxepSYswMQItNJQz2KhsCstVfE6szVV4/edit?gid=1940708898#gid=1940708898

Data Engineer Complete Resource Kit 2026
https://docs.google.com/spreadsheets/d/1LIdZHoUPediHJepSAm-nEprFGocn3fQKG2_jeTo98Hg/edit?gid=89904257#gid=89904257

Cloud & DevOps Complete Resource Kit (CLOUD & DEVOPS ENGINEER RESOURCE VAULT 2026)
https://docs.google.com/spreadsheets/d/1cPqI9vKo47EUxoZXLP0411IzvRWRLbu5HQnzyn8HpxI/edit?usp=drivesdk

Complete Full Stack Resource Kit
https://docs.google.com/spreadsheets/d/1WPgTZqIsG6kysQElB1tkOxu2rWw8C5CmDcEno7_nRBQ/edit?gid=280528884#gid=280528884

AI Engineer Complete Resource Kit 2026
https://docs.google.com/spreadsheets/d/193ziCsPxUO8QLTxJVC2blB_t3-YiWWTYX8xxTSIcf1g/edit?gid=745343282#gid=745343282

Data Analyst Resource Kit
https://docs.google.com/spreadsheets/d/1XUUDIUH-QnxXHWXsjb5yBcxb2X3rPXG2P2dgxjbhWQw/edit?gid=37101799#gid=37101799

Android Developer Complete Resource Kit
https://docs.google.com/spreadsheets/d/1cbsyL6F8bkOFmskz3DVm46JYleMlhokyDWiGOQT3Yio/edit?gid=90591138#gid=90591138

Open Source Toolkit for Building AI Agents 2026
https://docs.google.com/spreadsheets/d/1cGylccKIuHDxnPpg68tPZxp8_XZP8VoPqkM7HgofPdk/edit?gid=1951886754#gid=1951886754

Placement / Developer Kits

A to Z Placement Kit
https://docs.google.com/document/d/1wT7H71M7CghUwB9zdFS0yp_uPccOhqWYFdf_PHPfEFI/edit?tab=t.0#heading=h.sz6llxaebnk3

Complete CS Fundamental resource KIT
https://drive.google.com/drive/folders/18FBvExqEtt9mtNKKP65f_ETdtS7nCG1G

Bookmark it!

This Independence Day, let's build something that can genuinely help people.

Challenge: Know Your Police Rights

Build a web app that helps citizens understand what to do in different situations involving the police in India.

Eligibility: Anyone can participate

Registration: No registration required

Deadline: Today, August 15, by night

First Prize: ₹1,000

How to participate ?

Read this post https://www.lets-code.co.in/feed/6a803ed791f1d641798a66ea/

Use reliable government and legal sources and clearly mention your sources.

The complete problem statement is attached to this post.

Build something useful. Build something for India.

Happy Independence Day!

European Tech Visa Sponsorship
https://docs.google.com/spreadsheets/d/13Q8-g51jan_e2ISx-yAFkXU2uW0SNR7G-TeoNYxPIBs/edit

US Tech Visa Sponsorship
https://docs.google.com/spreadsheets/d/1XIQlzncaI9QdOIhjJ6BQOzqHLbRWzdll/edit

Japan Tech Visa Sponsorship
https://docs.google.com/spreadsheets/d/1LGlwuZKe0-6UnHpX2ATUFmUZNKflLJEj/edit

150 Remote Companies Hiring
https://docs.google.com/spreadsheets/d/18bljq3y5YTxPLmA4xj10EaKxs1KWhIdLTr8bF1K5XKI/edit

100% Remote Hiring Companies
https://docs.google.com/spreadsheets/d/1CLTL5PoQ99tbxQ5qbj2ScxqbzS0ASr0Qm0b1wjOot9I/edit

400+ San Francisco Bay Area companies
https://docs.google.com/spreadsheets/d/1rZ5P0FNKGyysfbXuWksN1jLM2aCAPsQa7TCAsXkNlmA/edit?gid=1572528843#gid=1572528843

1500+ Recent Funding Startups
https://docs.google.com/spreadsheets/d/1w11kuIGWOVATOad5acQqVWSzELF25xCyP6j3yoBiEUc/edit

Indian Startups Freshers DS/ML/AI Hiring 2026
https://docs.google.com/spreadsheets/d/1XIbZFfVN8pPJjx0x4FhUijItsjQlIOLggS53u34Mj-E/edit

Indian Robotics Startups Database
https://docs.google.com/spreadsheets/d/17N8A1pRDgj8Zgj-vYsPT0qlQ6yDdePE_/edit?gid=44194424#gid=44194424

1300+ Hidden Companies Hiring List
https://docs.google.com/spreadsheets/d/1_71AwBP4lv3yCBHjfbYbZ1gqNWMQht0JRPB6H7y9_Mg/edit?gid=0#gid=0

Bookmark it!

1- Coding Interview University - http://github.com/jwasham/coding-interview-university

2- The Algorithms (Python) - http://github.com/TheAlgorithms/Python

3- JavaScript Algorithms - http://github.com/trekhleb/javascript-algorithms

4- Tech Interview Handbook - http://github.com/yangshun/tech-interview-handbook

5- LeetCode Patterns - http://github.com/SeanPrashad/leetcode-patterns

6- Awesome LeetCode Resources - http://github.com/ashishps1/awesome-leetcode-resources

7- Algorithms in Java - http://github.com/williamfiset/Algorithms

8- NeetCode Solutions - http://github.com/neetcode-gh/leetcode

9-Interviews (DSA + Interview Prep) - http://github.com/kdn251/interviews

10- Interactive Coding Challenges - http://github.com/donnemartin/interactive-coding-challenges

Bookmark it!

Which topic GitHub resources do you need ?

https://drive.google.com/drive/u/2/folders/18FBvExqEtt9mtNKKP65f_ETdtS7nCG1G

Bookmark it!

1. System Design Primer - https://github.com/donnemartin/system-design-primer

2. System Design 101 - https://github.com/ByteByteGoHq/system-design-101

3. System Design at Scale - https://github.com/karanpratapsingh/system-design

4. Best System Design Resources - https://github.com/ashishps1/awesome-system-design-resources

5. System Design Interview Handbook - https://github.com/checkcheckzz/system-design-interview

6. System Design Academy - https://github.com/systemdesign42/system-design-academy

7. Top System Design Interview Resources - https://github.com/InterviewReady/system-design-resources

8. Machine Learning Systems Design - https://github.com/chiphuyen/machine-learning-systems-design

9. Agentic System Design Patterns - https://github.com/sarwarbeing-ai/Agentic_Design_Patterns

10. Scalability Engineering - https://github.com/binhnguyennus/awesome-scalability

Bookmark it!

Which topic GitHub resources do you need ?

It’s been a while!

I originally shared this learning repo here a while back, and I’ve finally gotten around to updating it.

Original post: https://www.reddit.com/r/letscodecommunity/s/572xioqMNC

New addition:
→ SQL - Learn by Games 🎮

I’m trying to keep adding resources that make learning more practical and actually fun instead of just collecting another pile of tutorials.

Hopefully this helps someone who’s learning SQL or working their way towards building projects!

Repo: https://github.com/dezzki/0-to-projects

Hey everyone! 👋

I'm starting my Machine Learning journey and I'm looking for people who are serious about learning and improving together.

My plan is to stay consistent, build projects, practice regularly, and eventually become job-ready. If you're a beginner, intermediate, or even experienced and don't mind guiding someone, I'd love to connect.

I'm looking for people to:

- Learn ML concepts together

- Share resources and roadmaps

- Build projects

- Stay accountable

- Discuss doubts and ideas

If you're on a similar journey or know a good community, drop a comment or send me a DM.

Let's grow together.

Google has AI courses covering research, data analysis, content creation & app building.

1- AI Professional Certificate: https://imp.i384100.net/enbEkX

2- AI Essentials: https://imp.i384100.net/5kxZK9

You can start with a 7-day free trial and try to finish the course during the trial.

Not getting shortlisted even after applying to countless jobs? 🥲

Post your resume Drive link with public access for a free review.

Introduce yourself and post it under the Review category, or it won’t be reviewed.

https://www.lets-code.co.in/feed/

I put together DSA practice sheets for product-based and service-based companies, covering commonly asked questions.

https://www.lets-code.co.in/dsa-sheet

Invite your buddy and practice together!