CashKaro logo
CashKaro

45 open roles

RUST API Developer

Chennai, Tamil Nadu Full TimePosted Aug 4, 2026

Job description

Company Overview:**

CashKaro is India’s #1 cashback platform, trusted by over 25 million users! We drive more sales for Amazon, Flipkart, Myntra, and Ajio than any other paid channel, including Google and Meta. Backed by legendary investor Ratan Tata and a recent $16 million boost from Affle, we’re on a rocket ship journey—already surpassing ₹300 crore in revenue and racing towards ₹500 crore.

EarnKaro, our influencer referral platform, is trusted by over 500,000 influencers and sends more traffic to leading online retailers than any other platform. Whether it’s micro-influencers or top-tier creators, they choose EarnKaro to monetize their networks.BankKaro, our latest venture, is rapidly becoming India’s go-to FinTech aggregator, similar to Paisabazaar.

Join our dynamic team and help shape the future of online shopping, influencer marketing, and financial technology in India!

Role Overview:**

We are looking for a highly skilled Rust API Developerwith at least3****years of experiencein developing and maintaining APIs usingRust. The ideal candidate will play a critical role in building scalable, fast, and reliable API solutions to support the growing infrastructure of CashKaro & EarnKaro.

Key Responsibilities:**

Develop and maintain backend APIs using Rust, ensuring performance, security, and scalability.

Collaborate with frontend, product, and DevOps teams to build efficient systems that integrate seamlessly with other platforms.

Write clean, modular, and well-tested code that follows industry best practices.

Design efficient data structures and algorithms to support API development.

Debug, troubleshoot, and resolve performance issues, ensuring fast response times and availability.

Stay updated on Rust best practices and bring innovative approaches to solve complex backend challenges.

Document API features and ensure they are well-communicated to internal teams and external partners.

Must-Have Skills:**

Proficiency in Rust Programming

Strong skills in developing RESTful APIs and experience with Actix or Rocket frameworks.

Mandatory expertise in the Actix or Rocket framework.

Experience with async programming and Rust’s ownership model to manage concurrency.

Should be working on high-performance and large scale applications.

Deep understanding of Rust, including performance optimization techniques, with an excellent grasp of memory management

API Security Best Practices:

Should have a strong understanding of OAuth2 and JWT and how to implement the same when building APIs

Should be able to talk about role based access control

Should have a strong understanding on input validation to prevent SQL injection, XSS etc

Rate limiting and throttling. Should be able to demonstrate these in their current work also.

Database Integration

Experience with integrating databases (SQL or NoSQL) into API systems.

Version Control & Team Collaboration

Familiarity with Git and collaboration in a team environment using CI/CD pipelines..

Strict adherence to Coding Standards

Should have a strong process for adherence to coding standards.

Commitment to Continuous Learning:

Should be constantly learning and keeping up with new technologies

Description copied from CashKaro's careers page. Read the full posting before you apply.

More jobs at CashKaro

See all openings at CashKaro

More jobs in Chennai

See all jobs in Chennai