Principal Engineer
Immutable Systems
Software Engineering
Sydney, NSW, Australia
Posted on Nov 25, 2025
About Us 🚀
Immutable is the world’s fastest-growing game platform, built to power the next generation of games. We aim to drive the next evolution of gaming, combining performance, digital ownership and cutting-edge technology to help games grow and succeed. At the intersection of AI-driven analytics, high-performance growth tools, and seamless digital ownership, our technology helps studios attract, engage, and scale player communities across both Web2 and Web3.
Founded in 2018, Immutable is one of Australia’s fastest companies to reach unicorn status, raising more than AUD $400M+ with a valuation of AUD $3.5B. Today, more than 700 games are building on Immutable, and industry leaders like Ubisoft have chosen us as their partner for the future of gaming.
Over 6 million players use Immutable Passport, our unified identity enabling frictionless cross-game experiences, and our Immutable Audience platform has become the fastest-growing SaaS product line in our history. We're scaling rapidly, backed by a global team of creators, engineers, and gamers united by one mission: to build the most valuable growth layer in gaming and redefine how games launch, scale, and succeed. 🚀
About The Role 🤔:
Immutable is building the future of player onboarding, discovery, and engagement, and we are looking for a Principal Engineer to help define that future. Our goal is to help more games launch successfully using our next-generation monetisation and growth products.
As a Principal Engineer for our marketing and growth automation products, you will be a pivotal technical force behind our product, the primary destination where millions of players will discover, onboard to, and engage with Web3 and Web2 games. This is a high-impact, highly autonomous role designed for an engineer who thrives at the intersection of product, data, and platform engineering.
You will work closely with Engineering, Product, Design, Data, and Go-To-Market partners to architect systems, accelerate product velocity, and shape the evolution of a world-class growth and game discovery platform. Your work will directly influence how games launch, scale, and retain players across the ecosystem. This is not a people-management role. It is a technical leadership position for someone who wants to build, influence, and change the trajectory of a product through world-class engineering.
You'll Be Empowered To 🎮:
- Architect and evolve the technical foundation of Immutable Play, including onboarding systems, personalized game discovery, and smart matchmaking.
- Partner with Product to shape the roadmap using data, customer insights, and technical intuition to ensure we are solving real problems for studios and players.
- Experience in AdTech, MarTech, GameTech space with exposure to product analytics and experimentation tools such as Applovin, Mixpanel, Amplitude, AppsFlyer, Looker or LaunchDarkly
- Influence long-term technical decisions while also accelerating short-term product iteration.
- Own end-to-end delivery of core product features with a focus on durability, scalability, and exceptional user experience.
- Design and implement systems that power player acquisition, activation, and retention for Web2 and Web3 games.
- Lead experimentation frameworks, scoring systems, and targeting engines that enable faster product-led growth.
- Lead with your deep experience building, integrating, or scaling AI-powered systems, with the ability to evaluate models, design intelligent features, and leverage AI tooling to improve product performance and developer velocity.
- Establish engineering best practices that improve performance, reliability, and speed of execution across the team.
- Mentor and level up engineers through deep technical guidance, pairing, and architectural coaching.
- Act as a multiplier by unblocking teams, simplifying complexity, and enabling faster decision-making.
- Use product analytics, experimentation, and customer feedback to validate assumptions and improve feature outcomes.
- Collaborate closely with Data Science to design models, define telemetry, and evaluate impact.
- Translate complex product requirements into clear, actionable engineering decisions.
- Work with GTM, BD, and Commercial to understand studio workflows and identify new opportunities to help games launch and grow.
- Communicate trade-offs, risks, and options clearly to ensure alignment across engineering and product groups.
We'd Love You To Bring 🤝:
- 8+ years of experience building scalable consumer or SaaS platforms with strong full-stack or backend depth.
- Experience in growth engineering, experimentation platforms, or consumer discovery engines.
- Background in gaming, game technology, or player lifecycle systems.
- Experience building or integrating AI-driven features, recommendation systems, or personalization engines.
- Fluency in technologies such as TypeScript, React, Go, Node.js, AWS, or equivalent cloud-native stacks.
- A track record of designing resilient distributed systems, experimentation frameworks, or high-performance user-facing products.
- Familiarity with Web3 technologies or digital asset ecosystems.
- A builder’s mindset with the ability to connect technical choices directly to user outcomes.
- Experience contributing to product discovery, shaping problem definitions, or driving product-led experimentation.
- Ability to simplify complexity and find elegant solutions in ambiguous or fast-moving environments.
- Exceptional communication and collaboration skills that align engineers, designers, PMs, and commercial partners around shared outcomes.
- Proven experience providing technical mentorship, leading architecture discussions, and elevating engineering standards across a team.
- Strong delivery discipline with the ability to balance prototyping, velocity, and long-term quality.
- Comfort working in a startup or scale-up environment where pace, ownership, and autonomy are essential.
Bonus Points For ✅:
- Curiosity about how games acquire, retain, and monetise players across both Web2 and Web3 contexts
- Understanding of the gaming or marketing technology ecosystem, or experience in a high-growth B2B SaaS environment
We are proud of the benefits that we offer for all of our employees globally.
Here is a snapshot 😊
Attracting the best global talent
💸 We commit to paying globally competitive base salaries and contributions to a long-term fund
📊 Sharing our products' success through Employee Stock Options ESOP
🌟 Our flexible working model blends the best of both worlds: Sydney-based employees enjoy hybrid 3 days a week in our vibrant head office, while remote team members can work from home or utilise access to global office hubs via a WeWork All-Access pass
🥘 Lunch is ordered fresh every day in our friendly office in Sydney CBD
🎉 Quarterly End of Cycle Celebration Awards and Dinner
💻 USD $500 WFH allowance to set up your home office
☎️ USD $600 per annum to put toward your internet and phone usage.
🥳 USD $75 per quarter for remote employees to celebrate with local team members
⛑️ We also support our US Employees with Medical and 401K Insurance
🚘 Our Australian Employees can avail of Novated Leasing, save money by paying for your car using pre & post-tax dollars
Levelling up your growth
🌱 We offer up to USD $1,350 per annum for any classes, courses or events to support your growth and development
📚 Enjoy access to free online courses via Udemy
Helping you thrive
💆🏽♀️ Enjoy USD $800 per year to put toward your health and wellbeing
🤗 Get 24/7 access to unlimited counselling for you and your family when you need it through our EAP Service
🎁 Monthly subsidy and discounted rate with ClassPass, including a 1-year free membership to Breethe
Leave when you need it the most:
👨👧👦 New parents receive 12 weeks of paid leave in our gender-neutral offer. The birthing parent also gets an additional 6 weeks of leave for rest and recovery leading up to and after birth. We also offer Miscarriage Leave and extra leave for IVF treatments
🌟 Enjoy 2 additional paid annual leave days at the end of the year
🎂 Birthday you get a paid day off
Additional Information:
Immutable is committed to building and fostering an inclusive, diverse workplace. We believe in incorporating everyone's perspectives and experiences as this has been a significant driver of our success so far.
We are a 2026 Circle Back Initiative Employer. This means a human reviews every application and we commit to responding to every applicant.
*A note to recruitment agencies: Our internal team has this role covered, so there is no need to reach out - We don't accept unsolicited agency resumes and are not responsible for any fees related to unsolicited resumes. Thank you!
Join us in shaping the future of gaming!