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Build 2.139 · 05 Nov 2026, 10:27 UTC

Hackathons News Internships Skills Growth Pro Perks

Backend hackathons and builders | HackIndia

Backend

APIs, databases and the parts of a product nobody sees until they break.

1
hackathon

Backend hackathons1

MIET Kumaon

HackIndia Spark 10, Uttarakhand

Registration open

Prize: ₹1 Lakh
Builders: Be the first to register

AI ML AI Agents

Prove Backend14

REST APIsDesign a small REST API with clear URLs, methods, responses, pagination, errors, versioning, and docs. Prove it with a public repo a teammate can run and call.+100 XP · 8 lessons
SQLDesign tables, write useful queries, debug slow lookups, and protect inputs with parameters. You will ship a small feature with a public repo that recruiters can inspect.+100 XP · 8 lessons
AuthenticationAdd authentication to a web app without inventing your own crypto. You will use hashing, sessions or tokens, cookie flags, OAuth, and route protection in a project a recruiter can inspect.+100 XP · 7 lessons
ExpressBuild a Node.js 24 LTS and Express 5 API that handles routes, middleware, bodies, queries, env variables, errors, and a clean project structure. Finish with a public repo a recruiter can run.+100 XP · 8 lessons
Data StructuresBuild a public repo that shows how to pick arrays, maps, stacks, queues, linked lists, trees, heaps, and graphs for interview problems. You will include costs, code, tests, and explanations.

+100 XP · 8 lessons

AlgorithmsPractice common placement-round patterns and package your work into a public repo a recruiter can inspect. You will solve, explain, test, and document your approach.+100 XP · 8 lessons

OOPBuild a small feature using object-oriented code that a recruiter can read. You will model classes, interfaces, composition, and SOLID choices in a public repo.+100 XP · 7 lessons

Design PatternsLearn when common design patterns solve real code pain, and when they add noise. You will refactor a small app and publish a repo recruiters can inspect.+100 XP · 8 lessons

System DesignLearn to sketch a practical system design, explain trade-offs, and submit a hackathon project that shows clients, APIs, data, caching, queues, and scaling choices.+100 XP · 8 lessons

TestingLearn what to test, how to write your first unit and API tests, and how to run them on every push. Finish with a public repo that shows a working test suite.+100 XP · 7 lessons

JavaBuild a small Java command-line app that reads data, uses clean classes, handles errors, and can be built by someone else from your public repo.+100 XP · 8 lessons

C++Use modern C++ to solve problems and ship a small project with a clean public repo. You will practise STL, strings, classes, RAII, move semantics, compiling, debugging, and avoiding undefined behaviour.+100 XP · 8 lessons

GoBuild a small Go HTTP service with clean types, errors, concurrency, modules, and a shippable binary. Finish with a public repo a recruiter can run.+100 XP · 7 lessons

RustBuild a small Rust command-line tool and publish it in a public repo. You will use ownership, Result, pattern matching, traits, crates, and compiler errors without getting stuck.+100 XP · 7 lessons