Sr. Staff Software Development Engineer at Zscaler

Bengaluru, Karnataka, India

Apply Now

Not SpecifiedCompensation

Senior (5 to 8 years), Expert & Leadership (9+ years)Experience Level

Full TimeJob Type

UnknownVisa

Cybersecurity, Cloud Computing, TechnologyIndustries

Requirements

8+ years of experience specialising in systems performance engineering, with a foundational understanding of operating system internals (Linux) and core resource management (CPU, Memory, Disk, Network)
Hands-on experience with advanced Linux performance tools, including perf, DTrace, or eBPF/BPF Performance Tools, capable of conducting in-depth kernel-level analysis
In-depth knowledge of k8s performance considerations, including cluster capacity planning, CNI overhead, resource limits (requests and limits), and efficient pod scheduling
Expertise in utilising advanced profiling features in Chrome Developer Tools (Lighthouse, Performance tab) to diagnose rendering jank, JavaScript execution time, and core web vitals
Experience tuning cloud provider infrastructure and services (e.g., AWS EC2/EKS, GCP GKE) for optimal price-performance ratios (Preferred)
Familiarity with the concepts and principles of proactive performance management and capacity planning (Preferred)
Experience generating and interpreting advanced performance visualisations such as Flame Graphs and Heat Maps (Preferred)

Responsibilities

Conducting comprehensive performance investigations across production and pre-production environments, network stack, microservices, and client-side browser performance
Advocating for and implement "shift-left" performance strategies, focusing on systemic fixes and architectural improvements to prevent performance regressions and minimise reactive "firefighting"
Analysing and optimising front-end application performance using advanced browser tools, focusing on critical metrics such as Time to First Byte (TTFB), Largest Contentful Paint (LCP), and Total Blocking Time (TBT)
Developing and maintaining specialised performance tooling, tracing scripts (e.g., EBPF), and advanced visualisations like Flame Graphs to identify and communicate complex bottlenecks
Collaborating closely with development and infrastructure teams, providing expert guidance on performance design, code optimisation, and efficient utilisation of operating system and network resources

Skills

Performance Analysis

Microservices

Network Stack

Browser Performance

Shift-Left

Cloud Security

Zero Trust

SASE

SSE

Zscaler

Cloud-based cybersecurity and secure gateway services

About Zscaler

Zscaler provides cloud-based information security services, focusing on internet, web, and cloud security. Its platform functions as a secure gateway that inspects all internet traffic between users and applications, ensuring that threats are identified and stopped before they can access a client's network. This service is offered through a subscription model, allowing large enterprises and government organizations to select the level of security that meets their needs. Zscaler differentiates itself from competitors by offering a strong partner program that enhances market reach and provides partners with training and resources. The company's goal is to support secure digital transformation for its clients by delivering reliable security solutions.

San Jose, CaliforniaHeadquarters

2008Year Founded

$148.8MTotal Funding

IPOCompany Stage

Enterprise Software, CybersecurityIndustries

5,001-10,000Employees

Benefits

Comprehensive health plans

Supportive parental & family leave

On-demand learning & development

Company-sponsored volunteering

Global tuition assistance program

Guilt-free paid time off

Risks

Emerging cybersecurity firms may erode Zscaler's market share.

Economic downturns could impact Zscaler's subscription-based revenue model.

The retirement of CFO Mr. Canessa may lead to financial instability.

Differentiation

Zscaler offers a 100% cloud-based security platform, eliminating on-premise hardware needs.

The company is a Gartner magic quadrant leader for secure web gateways.

Zscaler's platform inspects all internet traffic, ensuring threats are neutralized pre-network.

Upsides

Zscaler's FY/25 guidance was revised upward, indicating strong financial performance.

The partnership with Bharti Airtel enhances Zscaler's zero-trust architecture offerings.

Zscaler's hiring of government experts strengthens its position in the public sector.

Land your dream remote job 3x faster with AI

Try Jobo Free