Principal Engineer

About Us 🚀

Immutable is a global technology company, powering the leading platform for building games on Ethereum. We are on a mission to build the future of gaming by redefining how games are played and discovered. Founded in 2018, Immutable is one of the fastest Australian companies to hit unicorn status, having raised more than AUD $300M and a valuation of AUD $3.5 billion.

Currently, the Immutable Group consists of the Immutable Platform, the leading platform for building games on Ethereum powering successful games like RavenQuest and Immortal Rising 2, and Immutable Games, a global leader in web3 game development and publishing with leading titles Gods Unchained and Guild of Guardians.

Our ambition is to make digital worlds real; we have incredible global growth plans as the fastest growing gaming chain in 2024 with 250 games signed, more than in all previous years combined. 🚀

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.

• 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 MarTech, GameTech, AdTech space with exposure to product analytics and experimentation tools such as Mixpanel, Amplitude, Looker, AppsFlyer, 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.

• 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.

• 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 salaries and contributions & we share our products' success through Employee Stock Options. We also support our US Employees with Medical and 401K Insurance

💻 Our flexible working model blends the best of both worlds: Sydney-based employees enjoy three 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

📲 We offer USD $500 WFH allowance to set up your home office and USD $600 per annum to put toward your internet and phone usage.

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 six 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 and a paid day off for your birthday

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 2025 Circle Back Initiative Employer – 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 web3 gaming!

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