Principal Engineer
Status
Sydney, Australia
Full time
Hybrid
Compensation is not specified
Role
Software Architect
Description
** About Us**
Immutable is a global technology company revolutionizing the gaming industry on Ethereum by providing a leading platform for game development. Incorporated in 2018, Immutable has swiftly achieved unicorn status in Australia, raising over AUD $300M+ with a valuation of AUD $3.5 billion.
The Immutable Group includes the Immutable Platform, known for successful games like RavenQuest and Immortal Rising 2, and Immutable Games, a key player in web3 game development with titles such as Gods Unchained and Guild of Guardians.
The goal is to make digital worlds a reality, with significant growth plans positioning Immutable as the fastest-growing gaming chain by 2024, with 250+ games signed.
About The Role
Immutable aims to support the successful launch of games utilizing cutting-edge monetization and growth tools. They are seeking a Principal Engineer to drive the future of player onboarding, discovery, and engagement. This role requires expertise at the confluence of product, data, and platform engineering.
The Principal Engineer will be pivotal in advancing the play.immutable.com platform, where players discover and engage with Web3 and Web2 games. Working closely with multiple teams, this role involves architecting systems, enhancing product velocity, and shaping a premier growth and game discovery platform. The position offers an opportunity to shape how games launch, grow, and retain players within the ecosystem through technical leadership.
Responsibilities
- Design and optimize Immutable Play's technical foundation, encompassing onboarding systems, personalized game discovery, and smart matchmaking.
- Collaborate with Product to drive the roadmap through data, user insights, and technical expertise to solve real challenges for studios and players.
- Influence long-term technical strategies while accelerating short-term product development.
- Drive the end-to-end delivery of core product features, prioritizing durability, scalability, and exceptional user experience.
- Develop systems supporting player acquisition, activation, and retention for both Web2 and Web3 games.
- Lead in experimentation frameworks, scoring systems, and targeting engines for rapid product-driven growth.
- Establish engineering best practices to boost performance, reliability, and operational efficiency across the team.
- Mentor engineers and enhance their skills through technical guidance, collaboration, and architectural coaching.
- Serve as a facilitator, streamlining processes, simplifying complexities, and enabling agile decision-making.
- Leverage product analytics, experimentation, and customer insights to refine features for optimal outcomes.
- Work closely with Data Science to devise models, define telemetry, and evaluate effectiveness.
- Translate intricate product requirements into clear actionable engineering decisions.
- Collaborate with various teams to understand studio workflows and identify avenues to aid game launches and progression.
- Communicate effectively to align engineering and product teams on trade-offs, risks, and strategies.
Requirements
- Over 8 years of experience in building scalable consumer or SaaS platforms with a focus on full-stack or backend development.
- Proficiency in technologies like TypeScript, React, Go, Node.js, AWS, or similar cloud-native stacks.
- Demonstrated track record in developing resilient distributed systems, experimentation frameworks, and high-performance user-facing products.
- A problem-solving mindset with the ability to link technical decisions to user outcomes.
- Background in contributing to product discovery, shaping problem definitions, and driving product-driven experiments.
- Excellent communication and collaboration capabilities, aligning teams towards common goals.
- Strong mentoring experience, leading architecture conversations, and enhancing engineering standards within a team.
- Disciplined in delivery, balancing prototyping, speed, and long-term quality.
- Comfortable in a fast-paced startup or scale-up environment emphasizing pace, ownership, and autonomy.
Preferred Qualifications
- Experience in growth engineering, experimentation platforms, or consumer discovery mechanisms.
- Background in gaming, game technology, or player lifecycle systems.
- Familiarity with Web3 technologies or digital asset ecosystems.
- History in developing or integrating AI-driven features, recommendation systems, or personalization engines.
Benefits
At Immutable, employee well-being is paramount, offering a range of benefits to support global team members:
- Competitive salaries, stock options, and insurance benefits for US employees.
- Flexible working arrangements to cater to varied preferences.
- Allowances for personal development courses and events.
- Health and wellness support, including counseling services.
- Parental leave policies, birthday leave, and additional annual leave days.
- Commitment to diversity and inclusion in the workplace.
Immutable is devoted to fostering an inclusive work environment, appreciating all outlooks for continued success. Applicants can expect a response through the 2025 Circle Back Initiative.
Kindly note, recruitment agencies are not required to submit unsolicited resumes for this role. Thank you for understanding.
Embark on shaping the future of web3 gaming with us!
Skills Required
Immutable
Website
www.immutable.comCompany size
Not specified
Location
United States
Description
Not specified
Status
Ismail Ahmad
Senior iOS developer for GameDev startup
Full time
Remote
Game Concept: “Reflex Arena”
Genre
Real-time competitive 1v1 / 2v2 skill-based action game
Platform
iOS (iPhone first, iPad optional)
Core Idea
A pure skill game where players compete in short, intense arena matches using precision timing, reflexes, and positioning — no RNG, no pay-to-win.
Each match lasts 60–90 seconds, making it ideal for mobile sessions while supporting competitive depth.
Core Gameplay Loop
Matchmaking
Skill-based MMR
Ranked & unranked queues
Arena Match
Small symmetrical arena
Players control a single character
Objective: score points by outplaying, not overpowering
Score & Progress
Win → rank up
Lose → learn (clear replay & stats)
Cosmetics only progression
Controls (Mobile-First, High Precision)
Left thumb: Movement (virtual joystick)
Right thumb: Aim + action swipe
Tap: Ability activation
Perfect timing windows reward precision (parries, counters)
👉 Designed to feel closer to a fighting game than a casual mobile title.
Mechanics (Skill > Stats)
Core Mechanics
Dash with cooldown (positioning skill)
Timed parry (frame-perfect defense)
Charged shots (risk vs reward)
Combo chaining (execution mastery)
No Randomness
Fixed damage
Fixed cooldowns
No crit chance
No loot boxes
Competitive Depth
Skill Expression
Reaction time
Prediction & mind games
Spacing & arena control
Cooldown tracking
Skill Ceiling
Easy to learn (1 minute)
Hard to master (1000+ matches)
Game Modes
Ranked Duel (Main Mode)
1v1
Best of 3 rounds
Seasonal leaderboard
Team Arena
2v2 coordinated play
Shared objectives
Training / Practice
Frame timing visualizer
Ghost replays of top players
Visual Style
Clean, minimalistic sci-fi arenas
High contrast for readability
60–120 FPS target (ProMotion)
👉 Performance clarity > visual noise.
Monetization (Fair & Competitive)
Skins (characters, arenas, effects)
Emotes / victory poses
Battle pass (cosmetic only)
🚫 No power boosts
🚫 No energy timers
🚫 No loot RNG
Technical Design (iOS-Optimized)
Native Swift
Metal / SpriteKit
Deterministic simulation
Server-authoritative logic
Rollback netcode (if real-time PvP)
Genre
Real-time competitive 1v1 / 2v2 skill-based action game
Platform
iOS (iPhone first, iPad optional)
Core Idea
A pure skill game where players compete in short, intense arena matches using precision timing, reflexes, and positioning — no RNG, no pay-to-win.
Each match lasts 60–90 seconds, making it ideal for mobile sessions while supporting competitive depth.
Core Gameplay Loop
Matchmaking
Skill-based MMR
Ranked & unranked queues
Arena Match
Small symmetrical arena
Players control a single character
Objective: score points by outplaying, not overpowering
Score & Progress
Win → rank up
Lose → learn (clear replay & stats)
Cosmetics only progression
Controls (Mobile-First, High Precision)
Left thumb: Movement (virtual joystick)
Right thumb: Aim + action swipe
Tap: Ability activation
Perfect timing windows reward precision (parries, counters)
👉 Designed to feel closer to a fighting game than a casual mobile title.
Mechanics (Skill > Stats)
Core Mechanics
Dash with cooldown (positioning skill)
Timed parry (frame-perfect defense)
Charged shots (risk vs reward)
Combo chaining (execution mastery)
No Randomness
Fixed damage
Fixed cooldowns
No crit chance
No loot boxes
Competitive Depth
Skill Expression
Reaction time
Prediction & mind games
Spacing & arena control
Cooldown tracking
Skill Ceiling
Easy to learn (1 minute)
Hard to master (1000+ matches)
Game Modes
Ranked Duel (Main Mode)
1v1
Best of 3 rounds
Seasonal leaderboard
Team Arena
2v2 coordinated play
Shared objectives
Training / Practice
Frame timing visualizer
Ghost replays of top players
Visual Style
Clean, minimalistic sci-fi arenas
High contrast for readability
60–120 FPS target (ProMotion)
👉 Performance clarity > visual noise.
Monetization (Fair & Competitive)
Skins (characters, arenas, effects)
Emotes / victory poses
Battle pass (cosmetic only)
🚫 No power boosts
🚫 No energy timers
🚫 No loot RNG
Technical Design (iOS-Optimized)
Native Swift
Metal / SpriteKit
Deterministic simulation
Server-authoritative logic
Rollback netcode (if real-time PvP)
Payment in Crypto
bitcastle .
Social Media Executive
Bangalore, India
Bangalore, India
Full time
Remote
About the Company:
Bitcastle is a cryptocurrency exchange and Forex (FX)platform which aims to create a new age of exchange where everyone can use it safely and have fun. As we expand and take a more active approach to global expansion, bitcastle is looking to hire a Full-TimeSocial Networking Service (SNS) Executive to join our team.
About the Role:
We are looking for a Social Networking Service Executive to join the Bitcastle team. In this role, you will lead and execute our social media strategy to grow our brand presence across various platforms. You will manage content creation, community engagement, and campaign execution to strengthen our position in the crypto industry. This is a full-time, fully remote position.
Manage and maintain a strong presence across social media platforms, including X, Instagram, Facebook, LinkedIn, and TikTok, ensuring consistent messaging and tone
Conduct social listening to identify trending topics and emerging content within the cryptocurrency space
Monitor community feedback and collaborate with sponsorship, product, operations, content, and PR teams to deliver timely and relevant content
Create, curate, and manage engaging content tailored to each social media platform
Build and nurture a strong online presence by actively engaging with users, responding to inquiries, and fostering a positive community environment
Partner with communities and brands to boost visibility and establish meaningful collaborations
Track and analyze metrics such as engagement, reach, and growth across social accounts
Plan, execute, and manage social media campaigns, including product launches, contests, promotions, and events
Optimize campaigns to maximize user engagement and overall impact
Requirements:
At least 2 years of experience in social media content creation and management
Proven ability to develop and execute successful content strategies
Experience using social media analytics tools
Preferred Qualification:
Prior experience in social media management within the crypto industry
Deep interest in Web3, blockchain, and cryptocurrency developments
Understanding of social media SEO principles and platform algorithms
Bitcastle is a cryptocurrency exchange and Forex (FX)platform which aims to create a new age of exchange where everyone can use it safely and have fun. As we expand and take a more active approach to global expansion, bitcastle is looking to hire a Full-TimeSocial Networking Service (SNS) Executive to join our team.
About the Role:
We are looking for a Social Networking Service Executive to join the Bitcastle team. In this role, you will lead and execute our social media strategy to grow our brand presence across various platforms. You will manage content creation, community engagement, and campaign execution to strengthen our position in the crypto industry. This is a full-time, fully remote position.
Manage and maintain a strong presence across social media platforms, including X, Instagram, Facebook, LinkedIn, and TikTok, ensuring consistent messaging and tone
Conduct social listening to identify trending topics and emerging content within the cryptocurrency space
Monitor community feedback and collaborate with sponsorship, product, operations, content, and PR teams to deliver timely and relevant content
Create, curate, and manage engaging content tailored to each social media platform
Build and nurture a strong online presence by actively engaging with users, responding to inquiries, and fostering a positive community environment
Partner with communities and brands to boost visibility and establish meaningful collaborations
Track and analyze metrics such as engagement, reach, and growth across social accounts
Plan, execute, and manage social media campaigns, including product launches, contests, promotions, and events
Optimize campaigns to maximize user engagement and overall impact
Requirements:
At least 2 years of experience in social media content creation and management
Proven ability to develop and execute successful content strategies
Experience using social media analytics tools
Preferred Qualification:
Prior experience in social media management within the crypto industry
Deep interest in Web3, blockchain, and cryptocurrency developments
Understanding of social media SEO principles and platform algorithms
Nahclimited
Software Engineer (Unity Frontend)
Hong Kong
Hong Kong
Full time
Office
Our client, an innovative tech company that is transforming family entertainment with interactive, movement-based experiences, is in need of a Software Engineer to improve developer workflows and empower software teams in developing cutting-edge games.
They are looking for a skilled Unity Game Engineer to join their dynamic game development team in creating presentation layers within the Unity engine. The candidate will play a key role in designing the UI layer for a global game library in Unity, focusing on scalable systems that deliver intuitive user interfaces, seamless user experiences, and optimal performance across various game titles.
Responsibilities:
Lead the development of foundational UI frameworks utilized in multiple game titles.
Implement high-quality Unity C# code based on UI/UX designs.
Create shared UI component libraries to ensure consistency and reusability.
Design and optimize localization systems to support multilingual releases.
Develop custom Unity editor tools and workflows for designers and developers.
Improve UI performance metrics on target platforms such as draw calls, memory usage, and responsiveness.
Engage in code reviews and collaborate on technical planning across different teams.
Requirements:
Minimum of 3 years of professional software development experience.
Proficient in C# and Unity, with a focus on UI concepts like uGUI or UI Toolkit.
Strong grasp of asset pipelines, asynchronous programming patterns, and performance enhancement techniques within Unity.
Experience implementing scalable UI architectures such as MVVM/MVC/MVP.
Familiarity with localization strategies and tools.
They are looking for a skilled Unity Game Engineer to join their dynamic game development team in creating presentation layers within the Unity engine. The candidate will play a key role in designing the UI layer for a global game library in Unity, focusing on scalable systems that deliver intuitive user interfaces, seamless user experiences, and optimal performance across various game titles.
Responsibilities:
Lead the development of foundational UI frameworks utilized in multiple game titles.
Implement high-quality Unity C# code based on UI/UX designs.
Create shared UI component libraries to ensure consistency and reusability.
Design and optimize localization systems to support multilingual releases.
Develop custom Unity editor tools and workflows for designers and developers.
Improve UI performance metrics on target platforms such as draw calls, memory usage, and responsiveness.
Engage in code reviews and collaborate on technical planning across different teams.
Requirements:
Minimum of 3 years of professional software development experience.
Proficient in C# and Unity, with a focus on UI concepts like uGUI or UI Toolkit.
Strong grasp of asset pipelines, asynchronous programming patterns, and performance enhancement techniques within Unity.
Experience implementing scalable UI architectures such as MVVM/MVC/MVP.
Familiarity with localization strategies and tools.
Nahclimited
Software Engineer (Machine Learning)
Hong Kong
Hong Kong
Full time
Office
Our client operates as a top innovator in body motion video games on their proprietary gaming device. They are currently in search of a capable ML Engineer to join their adept engineering team. The team focuses on cutting-edge technology blending research with practical applications, particularly in developing indoor motion tracking technology using readily available consumer hardware.
The ideal candidate will be pivotal in supporting researchers and scientists through designing and constructing critical infrastructure. This infrastructure enhances ML workflows and the speed of model iteration, aiding in the acceleration of research endeavors.
Responsibilities include:
Designing and implementing training pipelines, automated data workflows, and integration tools that can meet the increasing demands of research.
Establishing robust systems for large-scale data collection, preprocessing, and curation to fortify experimentation processes.
Developing tools that streamline experiment cycles, reduce time-to-completion, and facilitate model transition to production.
Close collaboration with ML researchers to tackle technical challenges, enhancing the overall developer experience.
Supporting model deployment processes and seamlessly integrating ML aspects with broader platform systems.
Requirements:
Minimum of 3 years of experience in constructing high-quality machine learning systems, data infrastructure, or research platforms.
Proficiency in Python along with expertise in at least one systems programming language (e.g., C++, Go, Rust, Java).
Demonstrated experience in working with PyTorch or TensorFlow within production or research environments.
Strong track record in designing ML training pipelines, data workflows, and integration tools.
Understanding of model deployment and optimization for inference (MLOps practices).
Preferred Skills:
Knowledge in GPU-accelerated computing, distributed training systems, and data versioning or experiment tracking tools.
Exposure to Docker and Kubernetes platforms.
Contributions made to open-source ML projects.
Feel free to reach out if you have any questions or need further clarification on the role.
The ideal candidate will be pivotal in supporting researchers and scientists through designing and constructing critical infrastructure. This infrastructure enhances ML workflows and the speed of model iteration, aiding in the acceleration of research endeavors.
Responsibilities include:
Designing and implementing training pipelines, automated data workflows, and integration tools that can meet the increasing demands of research.
Establishing robust systems for large-scale data collection, preprocessing, and curation to fortify experimentation processes.
Developing tools that streamline experiment cycles, reduce time-to-completion, and facilitate model transition to production.
Close collaboration with ML researchers to tackle technical challenges, enhancing the overall developer experience.
Supporting model deployment processes and seamlessly integrating ML aspects with broader platform systems.
Requirements:
Minimum of 3 years of experience in constructing high-quality machine learning systems, data infrastructure, or research platforms.
Proficiency in Python along with expertise in at least one systems programming language (e.g., C++, Go, Rust, Java).
Demonstrated experience in working with PyTorch or TensorFlow within production or research environments.
Strong track record in designing ML training pipelines, data workflows, and integration tools.
Understanding of model deployment and optimization for inference (MLOps practices).
Preferred Skills:
Knowledge in GPU-accelerated computing, distributed training systems, and data versioning or experiment tracking tools.
Exposure to Docker and Kubernetes platforms.
Contributions made to open-source ML projects.
Feel free to reach out if you have any questions or need further clarification on the role.
Nahclimited
Software Engineer (Unity Multiplayer)
Hong Kong
Hong Kong
Full time
Office
Our hiring partner is a forward-looking technology company that is transforming family entertainment with interactive, movement-based activities. They are currently looking for a Software Engineer to optimize developer processes and support their software teams in creating innovative gaming experiences.
They seek a skilled Unity Game Engineer who will play a pivotal role in defining cutting-edge multiplayer gaming interactions. The role involves constructing real-time networked systems that enable players to engage in competitive and cooperative gameplay seamlessly across different devices, ensuring smooth gameplay and interactive social engagement.
Responsibilities:
Spearhead the development of real-time multiplayer gaming systems to ensure synchronized physics, actions, and scores on a global scale.
Design and enhance secure, tailored matchmaking and network features that cater to family-friendly gaming experiences.
Modify and enhance existing single-player codebases to seamlessly integrate multiplayer elements while maintaining game dynamics.
Address complex technical issues such as jitter compensation, bandwidth efficiency, and server-client coherence.
Collaborate closely with artists, designers, and core platform teams to deliver immersive connected gaming experiences.
Requirements:
3+ years of professional software development experience.
Proficiency in C# and Unity development.
In-depth knowledge of networking principles such as RPCs, state synchronization, and authority models.
Hands-on experience with Unity networking solutions like Photon Fusion, Mirror, or Netcode.
Strong grasp of asynchronous programming techniques.
They seek a skilled Unity Game Engineer who will play a pivotal role in defining cutting-edge multiplayer gaming interactions. The role involves constructing real-time networked systems that enable players to engage in competitive and cooperative gameplay seamlessly across different devices, ensuring smooth gameplay and interactive social engagement.
Responsibilities:
Spearhead the development of real-time multiplayer gaming systems to ensure synchronized physics, actions, and scores on a global scale.
Design and enhance secure, tailored matchmaking and network features that cater to family-friendly gaming experiences.
Modify and enhance existing single-player codebases to seamlessly integrate multiplayer elements while maintaining game dynamics.
Address complex technical issues such as jitter compensation, bandwidth efficiency, and server-client coherence.
Collaborate closely with artists, designers, and core platform teams to deliver immersive connected gaming experiences.
Requirements:
3+ years of professional software development experience.
Proficiency in C# and Unity development.
In-depth knowledge of networking principles such as RPCs, state synchronization, and authority models.
Hands-on experience with Unity networking solutions like Photon Fusion, Mirror, or Netcode.
Strong grasp of asynchronous programming techniques.