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 effective solutions
What you will bring
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 experienceBabel experience
VM experience
What you will be working with
NodeJS
TypeScript
JavaScript VMs
Buildkite
AWS
Docker
The Benefits of Being a Kasadian
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
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.
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).
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📌 Senior Software Engineer Sydney Melbourne
🏢 Kasada
📍 Melbourne