Senior UI Engineer (Unreal Engine)

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)

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

About Us

Limit Break is a company that values deep expertise, individual and industry growth, and outstanding technology. As a global leader in the mobile gaming industry, we are dedicated to transforming the digital market beyond gaming boundaries and building a vibrant community. We leverage cutting-edge technology and cryptocurrency to provide a creative vision that connects people worldwide.

Limit Break is supported by renowned investors like Buckley Ventures and Paradigm Ventures. We are seeking talented individuals to shape the future of the gaming industry together.

Join Limit Break as part of our team and bring your creativity and passion to take on challenges that push boundaries.

Responsibilities

Develop image-generating AI supporting art creation in games using large-scale language models (natural language processing and machine learning technology)

Design prompts, optimize UX, evaluate system performance

Enhance visual quality and streamline production pipelines using AI tools

Requirements

Experience in game production as an engineer or relevant coding skills in TA roles

Basic understanding of natural language processing and machine learning

Experience working with large datasets

Preferred Skills

Experience in developing interactive AI systems

Experience with cloud services (AWS, GCP, RunPod, Azure, etc.)

Experience with FWs such as TensorFlow, Keras, PyTorch, etc.

Desired Traits (Abilities)

Curiosity spanning across various areas of game production

A focused and diligent approach to tasks

High energy level towards deadlines

Self-control ability

Quick understanding for exchanging ideas on challenges

Ability to propose solutions for problem-solving

Apply now if you are enthusiastic, motivated, and seeking an exciting opportunity.

This is an international blockchain gaming company with regional operations and expanding offices globally.

We value diversity in our company and provide equal employment opportunities without considering race, color, religion, gender, sexual orientation, gender identity, national origin, or any other legally protected characteristics.

** Mobile Live Operations Producer**

About the Company:

Deep expertise, personal and industry evolution, and impeccable craft are the foundational principles of Limit Break. We are led by global industry experts in mobile gaming, unlocking its potential beyond games to shape digital markets into real-world economies and vibrant communities. Our focus on technology, cryptocurrency, and creative vision aims to connect individuals worldwide.

Limit Break is backed by prominent investors including Buckley Ventures & Paradigm Ventures, as the crypto market continues to grow. Gaming stands at the forefront of this tech revolution.

About the Role:

We are in search of an experienced Mobile LiveOps Producer to join our team and contribute to shaping the future of web3 gaming. This position offers the opportunity for a knowledgeable professional to impact engineering in blockchain technologies.

Responsibilities:

Live Operations Management:

Strategically plan and oversee live events, promotions, and content updates to boost player engagement and retention.

Analyze key performance indicators to make data-driven decisions that optimize live operations strategies.

Coordinate with various teams to ensure successful implementation of live events and features.

Implement continuous process improvements to enhance operational efficiency.

Integration:

Collaborate with the development team to integrate features such as NFTs and game mechanics into live operations planning.

Stay updated on trends in web3 & Free to Play gaming and leverage these for enhancing the game experience.

Ensure seamless integration of web3 elements with a focus on player experience and data security.

Monetization and Retention:

Develop and execute monetization strategies including in-game purchases and NFT sales.

Utilize player behavior data for designing retention strategies tailored to different player segments.

Support marketing efforts for player acquisition and re-engagement campaigns.

Requirements:

Possess a minimum of 8 years of experience in mobile game live operations with a successful track record in managing live events.

Previous experience in Free to Play, web3, blockchain, and gaming integration is preferred.

Strong understanding of mobile gaming market dynamics, player behavior, and monetization strategies.

Proficient in project management, handling multiple projects concurrently.

Skilled in analytics tools and problem-solving with a data-driven approach.

Excellent communication and teamwork skills.

Passion for gaming, innovation, and the potential of web3 technologies in the gaming industry.

What’s Offered:

Competitive U.S. salary ranging from $95,000 to $180,000 USD depending on skills and experience. Limited Break, an international blockchain gaming company, is expanding globally, thereby valuing diversity in its workforce. All qualified applicants will be considered.

If you are a motivated professional seeking an exciting opportunity, apply to explore this new role at Limit Break.

🌟 About Us 🚀

Immutable is a rapidly growing game platform driving the future of gaming with a focus on combining performance, digital ownership, and cutting-edge technology to support game development. Our technology leverages AI-driven analytics and high-performance tools to help studios grow and succeed in the competitive gaming industry. Immutable has quickly become a unicorn company since its founding in 2018, raising significant funding to support its mission. With over 700 games already building on our platform, industry leaders like Ubisoft have chosen us as their partner for the future of gaming.

Our Innovative Reagan history, we provide a unified identity solution through Immutable Passport, used by over 6 million players, can create frictionless cross-game experiences. Additionally, our Immutable Audience platform is rapidly growing and has become a leading SaaS product line within our business. With a dedicated global team united by our shared vision to redefine how games are launched, scaled, and succeed, we are focused on transforming the gaming industry. 🚀

🤔 About The Role 🤔

As the Lead Recruiter, GTM at Immutable, you will play a crucial role in revolutionizing player onboarding, discovery, and engagement, facilitating successful game launches through advanced monetization and growth products. Your primary responsibility will revolve around managing and expanding the recruitment process for GTM and commercial functions at Immutable, overseeing key roles within Sales, Marketing, Growth, Partnerships, Customer, and Strategy with the flexibility to support other hiring needs across the organization.

Working closely with senior leadership, you will have the opportunity to shape the recruitment strategy and workforce planning, ensuring high-quality outcomes in a dynamic and fast-paced environment. This role requires a combination of hands-on, strategic recruitment expertise and offers exceptional visibility and measurable impact across the business.

You'll Be Empowered To 🎮:

Drive Talent Strategy & Sourcing initiatives within GTM and commercial functions, establishing active talent pipelines through strategic sourcing techniques.

Manage the full recruitment process for critical roles across Sales, Business Development, Partnerships, Marketing, Growth, Customer, and Commercial Strategy, from sourcing to offer negotiation and closure.

Enhance Candidate Experience for senior commercial talent, ensuring a high-quality, personalized recruitment journey while bolstering Immutable's reputation in the competitive GTM talent landscape.

Implement Innovative Recruitment Practices by exploring new sourcing methods, tools, and industry insights to optimize recruitment speed, quality, and scalability.

Collaborate closely with Hiring Teams by partnering with senior leaders to shape hiring strategies, workforce plans, and role priorities, providing guidance on market conditions and talent acquisition.

Support Employer Branding efforts specifically focusing on GTM roles, working with internal teams to effectively position roles in the market and craft compelling narratives for senior commercial talent.

Make Data-Driven Decisions utilizing hiring data and reporting tools to provide actionable insights, track recruitment performance, and continuously refine recruitment strategies.

We'd Love You To Bring 🤝:

7+ years of recruiting experience, with a strong track record of managing complex hiring portfolios primarily in an in-house capacity.

Recent experience (2+ years) in a startup or scale-up environment, collaborating directly with founders and executive leadership.

Profound expertise in recruiting for GTM and revenue-generating positions, with a keen eye for identifying high-performing commercial talent.

Proven ability to act as a trusted advisor, influencing hiring decisions and workforce strategy beyond executing requests.

Advanced end-to-end recruitment skills, encompassing intake, sourcing, assessment, offer strategy, and closing.

Proficient in sourcing difficult-to-find commercial profiles in highly competitive markets.

Data-centric approach to hiring, leveraging metrics and funnel insights to enhance recruitment quality, speed, and outcomes.

Comfortable operating in ambiguous settings, managing shifting priorities and tight timelines within fast-paced, high-growth environments.

Strong communication and stakeholder management capabilities, with the capacity to effectively prioritize amidst competing demands.

Background in high-growth tech, SaaS, or platform businesses with experience in scaling GTM teams.

Experience in global hiring or recruiting across multiple regions, such as APAC, EMEA, and the Americas.

Prior experience in developing or expanding recruitment processes at scale, not limited to one-off hires.

Skilled in evaluating talent quality beyond resumes, assessing potential impact, execution capabilities, and commercial acumen.

Well-versed in modern recruitment tools and dashboards for tracking pipeline health and performance.

Bonus Points For ✅:

Experience with Lever or a similar Applicant Tracking System (ATS).

A genuine passion for or interest in the gaming industry and the exciting opportunities within Web3.

Join us in shaping the future of gaming at Immutable!

Immutable emphasizes creating an inclusive and diverse workplace and holds firm on its commitment to review and respond to every applicant as a part of its 2026 Circle Back Initiative Employer. Immutable is not accepting unsolicited resumes from recruitment agencies.