Who can apply for the Principal Software Development Engineer - Rust role at Zscaler?

The listing asks for Bachelor's degree; 14-14 years of experience.

What is the salary for this role?

Zscaler has not stated compensation in the listing. Check the original posting or ask during the application process.

Is the Principal Software Development Engineer - Rust position remote, hybrid or onsite?

The listing marks this role as hybrid, with Bangalore, IND as the location.

What is the application deadline?

Zscaler has not listed a fixed deadline, so apply early in case the opening is filled.

How do I apply for the Principal Software Development Engineer - Rust role?

Use the Apply button on this page. It opens the original listing on job-boards.greenhouse.io, where you submit your application with the company.

Greenhouse · Posted 20 Oct 2026

full-time

Principal Software Development Engineer - Rust

Zscaler · Bangalore, IND

Zscaler operates a global cloud security platform focused on zero trust architecture and digital transformation. As a Principal Software Development Engineer, you will work within the Platform Convergence department to design and scale high-performance backend services. Your primary responsibility involves building a low-latency, high-throughput data forwarding plane using Rust and asynchronous programming models. You will develop distributed systems that emphasize concurrency, fault tolerance, and effective messaging, while implementing gRPC-based APIs to integrate with orchestration layers. The role requires deep system-level optimization, including profiling interactions between kernel-space and user-space to ensure maximum performance. Beyond hands-on development, you will drive architectural strategy, conduct code reviews, and mentor junior engineers to maintain high technical standards. This position is suited for an experienced systems engineer who thrives in ambiguous environments and possesses a strong background in Linux fundamentals, networking, and containerized infrastructure. You should be comfortable navigating both high-level system design and granular code execution while collaborating across teams to solve complex security challenges.

rustdistributed systemsbackend engineeringsystems programmingzero trustcloud securitytokiolinux internalsgrpcprincipal engineer

Education

Level: Bachelor's degree

Software DevelopmentHybrid14-14 yrs experience

Key Skills

RustTokioasync-stdgRPCLinuxNetworkingContainersCI/CDDistributed SystemsConcurrencyFault ToleranceProfiling

Notes

['Hybrid work model', '14+ years of experience required']

Experience required

14-14 years experience

0 yrs10+ yrs

About the Role We are looking for a Principal Software Engineer to design and scale high‑performance backend services in the Platform Convergence department. Responsibilities Design and build a low‑latency, high‑throughput data forwarding plane using Rust and async/await models. Develop distributed, scalable systems with focus on concurrency, fault tolerance, and messaging. Implement and maintain gRPC‑based APIs to integrate forwarding plane capabilities. Optimize system performance through deep profiling across kernel‑space and user‑space. Drive technical excellence via code reviews, architectural discussions, documentation, and mentoring. Requirements 14+ years of software development experience, especially in systems programming with Rust. Extensive experience with async frameworks such as Tokio or async‑std. Proven track record building resilient, observable, horizontally scalable distributed systems. Deep understanding of Linux fundamentals, networking, container environments, CI/CD, and kernel‑user space interaction. Foundational understanding of AI/ML technologies and experience leveraging AI‑driven solutions.

Skills for this role

RustTokioasync-stdgRPCLinuxNetworkingContainersCI/CDDistributed SystemsConcurrencyFault ToleranceProfiling

Required skills

RustTokioasync-stdgRPCLinuxNetworkingContainersCI/CDDistributed SystemsConcurrencyFault ToleranceProfiling

Also mentioned in the listing

backend engineeringsystems programmingzero trustcloud securitylinux internalsprincipal engineer

Role	Principal Software Development Engineer - Rust
Company	Zscaler
Location	Bangalore, IND
Type	full-time
Compensation	Not disclosed
Posted	2026-10-20
Deadline	Rolling

Typical process for this type of role

A general guide — the exact steps for this specific listing may vary; check the original posting for details.

1ApplicationSubmit your resume through the apply link.
2ScreeningRecruiter reviews your background against the role.
3AssessmentA technical test, assignment, or coding round, depending on the role.
4Interview(s)One or more rounds with the hiring team.
5OfferOffer letter with compensation and start date.

Before you apply

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Notice period and expected compensation, in case it comes up

Principal Software Development Engineer - Rust at Zscaler: frequently asked questions

Who can apply for the Principal Software Development Engineer - Rust role at Zscaler?: The listing asks for Bachelor's degree; 14-14 years of experience.
What skills does the Principal Software Development Engineer - Rust role require?: The listing highlights Rust, Tokio, async-std, gRPC, Linux, Networking, Containers, CI/CD, Distributed Systems, Concurrency. Show each of these in a project or past role on your resume.
What is the salary for this role?: Zscaler has not stated compensation in the listing. Check the original posting or ask during the application process.
Is the Principal Software Development Engineer - Rust position remote, hybrid or onsite?: The listing marks this role as hybrid, with Bangalore, IND as the location.
What is the application deadline?: Zscaler has not listed a fixed deadline, so apply early in case the opening is filled.
How do I apply for the Principal Software Development Engineer - Rust role?: Use the Apply button on this page. It opens the original listing on job-boards.greenhouse.io, where you submit your application with the company.

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