Senior Backend Engineer
Company Overview
At Seedworld Studios, we are dedicated to transforming the gaming experience through our innovative AAA metaverse game, Seedworld. This game uniquely merges elements of Fantasy and Steampunk to create an enchanting world. Seedworld Studios is currently looking for a skilled and enthusiastic Senior Backend Engineer to join our Product Engineering team. As a valuable team member, you will have a pivotal role in developing the application for one of the largest metaverse projects in the industry, reporting to the Head of Engineering and collaborating closely with various teams to bring our vision to fruition.
Responsibilities:
Goal Ownership & Delivery: Take charge of team objectives, ensuring timely and impactful delivery, and addressing inefficiencies or risks promptly to meet both technical and business demands.
Backend Development: Lead the creation and sustenance of scalable and efficient backend services using Node.js and TypeScript, producing clean, high-performance, and maintainable code.
System Design & Architecture: Spearhead the design and development of intricate systems, making significant architectural decisions to align systems with technical and business requirements.
API Design & Integration: Develop and manage RESTful APIs, incorporating third-party APIs for seamless business processes and data exchange.
Database Management: Design, optimize, and maintain MongoDB databases to ensure data integrity, security, and scalability.
Monitoring & Optimization: Establish and enhance monitoring and alerting strategies, analyze complex system data, and maintain high availability and performance.
Code Quality & Reviews: Oversee the quality and reliability of codebases, conduct code reviews, implement best practices, and guide team members to ensure consistency and scalability.
Security Integration: Integrate security best practices into development procedures, proactively identifying vulnerabilities and mitigating risks within applications.
Collaboration & Mentorship: Provide mentorship to team members to cultivate a culture of continuous improvement, and collaborate with various teams to align development with business objectives.
Adaptability & Innovation: Collaborate with stakeholders to adapt to changing priorities, drive innovations, and balance multiple perspectives in line with business goals.
DevOps Practices: Collaborate on DevOps processes, including continuous integration, deployment, and the management of cloud infrastructure.
User-Centric Focus: Ensure team strategies prioritize customers, balancing technical execution with user-centric design principles.
Documentation: Maintain updated documentation for backend systems to ensure accessibility and clarity for team members.
Team Structure
You will work within a multi-disciplinary product development team consisting of frontend/backend engineers, test engineers, UI/UX designers, product owners, and Web3 subject matter experts.
Company Culture:
Fully remote, with a global presence.
Operating within an agile and inclusive work environment.
Strong focus on user-centric development and continuous improvement.
Passionate about creating impactful products and nurturing team growth.
Requirements:
Experience: 6+ years in backend development or as a Senior Software Engineer.
Technical Expertise: Proficiency in Node.js, TypeScript, MongoDB, and REST API design, with experience in frameworks like Express or NestJS.
Leadership & Mentorship: Demonstrated ability to mentor team members, promote inclusivity, and uphold team culture.
Web3 Interest: Understanding or interest in the Web3 ecosystem, covering wallets, transactions, IDOs/ICOs, and DeFi concepts.
User-Centric Development: Experience working in customer-focused environments, balancing technical requirements with user needs.
Adaptability: Capable of managing changing priorities and delivering high-quality work in fast-paced environments.
Desirable
Advanced knowledge of the Web3 ecosystem and blockchain technology.
Experience with high-risk environments like payment platforms.
Proficiency in AWS and infrastructure as code such as Terraform.
Bachelor’s degree in computer science or related field.
Location
Fully remote position
Flexible timezone, with working hours between 9AM and 10PM (UTC time).
Benefits:
21 days of holidays per year with local bank holidays included.
Sick days provided.
Budget allocated for training/courses.
Budget for purchasing work equipment like laptops.
Salary:
Monthly salary paid in stablecoins (USDC)
Senior iOS developer for GameDev startup
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)
Game Studio Hiring: Full-Stack, Mobile & 3D Web Developers
We are an established game studio developing HeroWarrior, a Unity-based web battle game that has been in active development for three years. Our project is supported by GameWorld (Netherlands) and we're currently preparing for version 2.0 with an expanded development team.
Following strategic restructuring in 2022, we're now building a distributed team across Europe and seeking talented developers to join our long-term project.
Open Positions
We are actively recruiting for the following roles:
UI/UX Designer
Specialization in gaming interface design
Experience with Unity UI systems preferred
Full-Stack Developers
Backend and frontend development for web platform
Experience with game-related web services preferred
Mobile Developers
Native mobile app development
Cross-platform experience valued
Unity Developers
Gameplay mechanics implementation
3+ years Unity experience required
3D Web Developers
WebGL and Three.js expertise
Browser-based 3D rendering experience
hat We Offer
Project Commitment: We're seeking long-term partnerships, not short-term contractors. This is an opportunity to grow with an established project backed by industry partners.
Compensation Structure:
Flexible payment options: hourly rates, monthly retainers, or milestone-based compensation
Rates negotiable based on experience and role
Initial evaluation period followed by standard employment terms
Work Environment:
Remote-friendly distributed team
Collaborative development process
Opportunity to work on a commercially-backed game project
Application Requirements
Please submit the following:
Portfolio/Resume - Detailed work history and relevant projects
Rate Expectations - Your preferred compensation structure and rates
Code Samples - GitHub repository, portfolio links, or previous work examples
Availability - Expected start date and commitment level
Evaluation Process Acknowledgment - Confirmation of willingness to complete a brief technical assessment
Ideal Candidates
Demonstrated passion for game development
Strong technical skills in relevant technologies
Experience working on long-term projects
Collaborative mindset and professional communication
Interest in building innovative gaming experiences
Next Steps
We are moving quickly to fill these positions. Qualified candidates will be contacted within one week for initial discussions and technical evaluation.
To apply, please send your complete application materials to vlad@gameworldcompany.com
Social Media Executive
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
AIエンジニア
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.