---
title: 'Senior Software Engineer (compiler focused) at Kasada'
canonical: 'https://feeny.ai/job/senior-software-engineer-compiler-focused-kasada-sydney-4dwekjtssrth'
type: 'job'
last_seen: '2026-09-08'
---

# Senior Software Engineer (compiler focused) at Kasada

- **Company:** Kasada
- **Location:** Sydney, Australia
- **Work type:** hybrid
- **Posted:** 2026-08-19
- **Last confirmed live:** 2026-09-08
- **Apply:** https://jobs.lever.co/kasada/0b29a8a3-4fa6-487a-901d-f4637deefba5

## Job description

## About Kasada

Join us in stopping bad bots, for good! Kasada protects millions of online users everyday. Founded to stop automated bot attacks, we believe the internet should be a safe place for everyone. Bad bots are highly destructive. They take over accounts, steal content, overload systems and infrastructure and cause billions of dollars in damages every year. Seeking to restore trust in the internet, Kasada stops bots at the very first request including those that have never been seen before.

We’ve grown from a few friends working out of a shipping container under the Sydney Harbour Bridge to now operating globally, we’re spread across the world protecting some of the most well-known brands on the face of the earth.

We’re an innately curious team that’s not afraid to bring bold ideas to create better ways of solving problems. We’re looking for people who are passionate about solving some of the most difficult and pressing cybersecurity issues, while having fun doing it!

## About the role

Kasada has an exciting opportunity to join our team responsible for defending our customers against automation.

This is a role where you will get the opportunity to apply your apply your knowledge in compiler theory. Kasada uses novel obfuscation techniques that involve custom languages and virtual machines. You will be researching ways to leverage these and invent new ones to prevent attachers from getting the upper hand. As a member of our Engineering team, you will be able develop new creative innovations to our Virtual Machine and compiler and establish yourself as a leader in the growing field of cyber security.

As a Senior Software Engineer (compiler focused) you will get to work deeply within our VM compiler working on all aspects of the compiler chain.

## What you will be doing

- Building and enhancing our Kasada Virtual Machine
- Building and optimising different stages of our compiler chain
- Using proof-of-concept work from our security research and turning it into practical solutions that enhance our bot defences
- Perform research in collaboration with product and engineering teams
- Contributes to architecture design discussions in how we can build efficient solutions

## What you will bring

We don’t expect you to meet everything below, but we do look for candidates eager to develop in areas where they have less experience

- At least 3 years experience working in a Senior Software Engineering role
- Understanding of compiler architecture
- Experience working with compilers
- Experience with ASTs
- TypeScript / JavaScript experience
- A great ability to communicate highly technical concepts to non-technical audiences
- Strong debugging skills and willingness to delve into unknowns
- Understanding of writing user based tests

Highly desirable

- Knowledge of browsers including backwards compatibility
- Cybersecurity experience
- Client based testing experience
- Babel experience
- VM experience

## What you will be working with

- NodeJS
- TypeScript
- JavaScript VMs
- Buildkite
- AWS
- Docker

The Benefits of Being a Kasadian We’re committed to making Kasada a place where you can do the best work of your career — and feel supported while doing it. We foster an inclusive, highly collaborative environment grounded in our core values, and we’ve built our benefits to help you thrive both inside and outside of work.

- A stake in Kasada’s global success through equity/stock options
- Support for growing families, including generous parental leave and resources before, during, and after leave
- Wellbeing support to help you grow and recharge, including access to our EAP with confidential counselling for you and your loved ones
- Birthday leave
- Wellness leave
- Annual company offsites to connect, collaborate, and celebrate together
- A dog-friendly HQ in Sydney

What’s Next? If this sounds interesting, hit the Apply button and one of our team will be in touch for an exploratory, confidential conversation. Our hiring process is designed to be thoughtful, efficient, and transparent — so everyone can make an informed decision about whether Kasada is the right next step.

When applying, you’re welcome to share the pronouns you use and any adjustments you may need during the interview process — we want you to feel set up for success in every conversation.

One Last Thing… Research shows that women and individuals from underrepresented backgrounds are less likely to apply unless they meet every requirement. If this role excites you and you think you could add value, we’d love to hear from you — even if you don’t tick every box. We value diverse perspectives and welcome different paths and experiences.

Please note: Kasada is an E-Verify employer (US-based applicants only).

## About Kasada

## Company Overview
- **One-liner**: Kasada provides a radical bot management platform that uses behavioral analysis and dynamic defenses to protect web, mobile, and API channels from automated threats and online fraud.
- **Entity Type**: Private (Series B; total funding $65.9M)
- **Headquarters**: Sydney, Australia (with hubs in New York, Boston, Melbourne, and San Francisco)
- **Founded**: 2015
- **Founders**: Sam Crowther

## Core Business
- **Primary industry/industries**: Cybersecurity (bot mitigation, online fraud prevention)
- **Target customers**: B2B, Enterprise (e-commerce, financial services, airlines, any organization with customer-facing web/mobile apps)
- **Mission or purpose**: To seamlessly protect brands and their customers from automated attacks through expertise in both the tools and human minds behind evolving threats, and to transform the Internet into a more authentic community where each user is a real person.

## Products & Services
- **Kasada Platform**: An invisible, dynamic defense that defeats automated threats on web, mobile, and API channels without requiring CAPTCHAs. It uses behavioral analysis to distinguish humans from bots in real time. [kasada.io/about-us](https://www.kasada.io/about-us)
- **KasadaIQ**: A suite of attack prediction services that gives defenders visibility into threats before they strike. [kasada.io/life-at-kasada](https://www.kasada.io/life-at-kasada)
- **AI Agent Trust**: A new offering to manage and verify AI-driven agents, launched as part of Kasada’s leadership in the “agentic era.” [kasada.io/life-at-kasada](https://www.kasada.io/life-at-kasada)

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Annual Revenue of $27.5M (LinkedIn estimate); Total Funding of $65.9M across 5 rounds [linkedin.com/company/kasada](https://linkedin.com/company/kasada)
- **Notable Investors/Partners**: Ten Eleven Ventures (led Series B), other undisclosed investors. [kasada.io/life-at-kasada](https://www.kasada.io/life-at-kasada)
- **Growth Signals**: 
  - Headcount of ~75 employees (+7% YoY) [linkedin.com/company/kasada](https://linkedin.com/company/kasada)
  - Named a Leader in The Forrester Wave™: Bot and Agent Trust Management (2025) [kasada.io/life-at-kasada](https://www.kasada.io/life-at-kasada)
  - Raised $20M in 2025 to accelerate global expansion [kasada.io/life-at-kasada](https://www.kasada.io/life-at-kasada)
  - Certified Great Place to Work in both the US and Australia (2024-2025) [kasada.io/about-us](https://www.kasada.io/about-us)

## Competitive Advantages
- **Behavior-first approach**: Kasada’s unique insight comes from understanding the human minds behind attacks (founder Sam Crowther was a red teamer), not just the code.
- **No CAPTCHAs**: Invisible, dynamic defenses eliminate user friction while stopping bots – a key differentiator from legacy bot management solutions.
- **Continuous adaptation**: The platform evolves with attacker tactics, providing “enduring protection” rather than static rules.
- **Dual red/blue team DNA**: The company blends offensive and defensive security expertise, leading to more effective detection.

## Strategic Focus
- **Leading the agentic era**: Kasada is investing in AI Agent Trust to manage the new wave of AI-driven traffic, positioning itself as the authority on bot and agent trust management. [kasada.io/life-at-kasada](https://www.kasada.io/life-at-kasada)
- **Global expansion**: The recent $20M funding round is earmarked for scaling sales, marketing, and engineering teams globally, especially in North America.
- **Deepening platform capabilities**: Continued investment in predictive analytics (KasadaIQ) and behavioral modeling to stay ahead of attackers.

## Why Work Here
- **Culture & Values**: Kasada emphasizes curiosity, creativity, compassion, and a “unique be yourself” ethos. 100% of employees are proud to tell others they work at Kasada, and 97% feel their manager cares about their career. [kasada.io/careers](https://www.kasada.io/careers)
- **Flexible Work**: Employees are encouraged to work where they feel most productive – remote or in-office. The company has a quarterly team connection budget. [kasada.io/careers](https://www.kasada.io/careers)
- **Benefits**: 
  - 12 weeks gender-neutral parental leave + parenting bonus + return-to-work coaching.
  - Equity for all employees (everyone becomes an owner).
  - Wellness reimbursements, birthday leave, and EAP support.
  - Annual Hackhaus: a 4-day offsite where teams collaborate on real business challenges. [kasada.io/careers](https://www.kasada.io/careers)
- **Engineering Culture**: Domain interviews focus on real scenarios; no “culture fit” assessments – instead they evaluate value alignment. The company is SOC 2 and PCI DSS compliant, and has won multiple cybersecurity awards. [kasada.io/careers](https://www.kasada.io/careers)

## Sources
1. [kasada.io/careers](https://www.kasada.io/careers)
2. [kasada.io/about-us](https://www.kasada.io/about-us)
3. [kasada.io/life-at-kasada](https://www.kasada.io/life-at-kasada)
4. [linkedin.com/company/kasada](https://linkedin.com/company/kasada)
5. [cbinsights.com/company/kasada](https://www.cbinsights.com/company/kasada)

## Other roles at Kasada

- [Senior Software Engineer](https://feeny.ai/job/senior-software-engineer-kasada-sydney-6h9hpnn1ygy0) — Sydney, Australia