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)
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
Software Engineer (Unity Frontend)
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.
Software Engineer (Machine Learning)
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.
Software Engineer (Unity Multiplayer)
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.