Senior Software Developer - Ruby on Rails

BingX is a leading global crypto exchange founded in 2018, serving over 20 million users with spot, futures, copy trading, and asset management services. We’re looking for a Business Development Manager to grow and manage KOLs, agents, and project partnerships, driving user acquisition and trading volume across global markets. Requirement: experience in crypto, influencer partnerships, and market development, with strong communication skills in English (Chinese or additional local languages are a plus). Note: Please include key achievements/past performance data in your resume (e.g., trading volume, regions managed, languages spoken, KOLs region). Apply here or check my profile for more information.

About Us
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
 

Description
About Target Mafia
Target Mafia is a performance-first syndicate of media buyers, data scientists, and creative masterminds running high-stakes operations in gambling, crypto, nutra, and adult industries. We operate with precision and confidence, scaling projects with ROI-driven execution.
In the crypto world, code is law — and one bug can bring down an empire. That’s why we’re searching for a Smart Contract Auditor, our Consigliere of Code, who will safeguard our operations and keep our digital vaults secure.
Working at Target Mafia
This role is for a detail-obsessed professional who thrives in high-pressure environments. You’ll work with our developers and strategists to audit smart contracts, identify vulnerabilities, and ensure flawless execution. Your insights will be the difference between fortune and failure.
Role
As a Smart Contract Auditor at Target Mafia, you will be the trusted advisor who ensures our blockchain infrastructure remains bulletproof. You will analyze code line by line, uncover hidden risks, and provide the security foundation for our Web3 empire.
Responsibilities
Audit Solidity-based smart contracts for vulnerabilities and inefficiencies.
Deliver detailed audit reports with actionable recommendations.
Collaborate with our developers during deployment and testing phases.
Stay ahead of new DeFi exploits and attack vectors.
Provide security-focused consulting to optimize our blockchain operations.
Skills Required
Advanced Solidity & Ethereum Virtual Machine (EVM) knowledge
Proven experience in smart contract auditing
Familiarity with audit tools (Slither, MythX, Echidna, etc.)
Strong understanding of DeFi protocols and attack vectors
Ability to write clear and structured security reports
GitHub or portfolio with past audit experience
Reasons to Join Our Team
Work on high-profile projects in the crypto underworld
Play a crucial role in securing multi-million-dollar operations
Competitive compensation in stablecoins or ETH
Bonuses for detecting critical vulnerabilities pre-launch
Join a mafia where loyalty and skill are rewarded with growth

Position: Web3 Analyst
Location: Remote (Worldwide)
Employment Type: Full-time
About Solus
Solus is a revolutionary decentralized and encrypted super-app that integrates chat, socializing, and trade, giving users complete control over their social interactions and digital assets. Our mission is to empower individuals by combining robust privacy features with versatile social and economic functionalities.
Role Overview
As a Web3 Analyst at Solus, you will play a key role in analyzing and researching the fast-evolving Web3 space. You will be responsible for deep market analysis, project and trend evaluation, and providing insights that will help strengthen Solus's position in the Web3 ecosystem. This is a strategic role for someone who understands blockchain, DeFi, decentralized applications, and thrives in a dynamic environment.
What You'll Do:
Conduct research and analysis on Web3 technologies, trends, and market dynamics.
Evaluate blockchain projects and decentralized applications (dApps) to identify investment opportunities and risks.
Monitor industry developments and regulatory changes that may impact the Web3 ecosystem.
Create reports and presentations to communicate findings and recommendations to stakeholders.
Engage with the Web3 community to gather insights and build relationships with key players.
Assist in developing strategies to enhance Solus’s position within the Web3 landscape.
Analyze competitors, products, and monetization models in the niche.
Collaborate closely with product and development teams to provide data on user needs and market demands.
What We Expect From You:
Strong understanding of Web3 technologies, blockchain, and decentralized finance (DeFi).
Excellent analytical skills with experience in data analysis and market research.
Ability to present complex information clearly and effectively (both written and verbal).
Proficiency in data visualization tools (e.g., Tableau, Power BI) and reporting software.
Self-motivated, proactive, and able to work effectively in a remote setting.
Bonus Points For:
Previous experience in an analytical role within a Web3 or crypto project.
Understanding of tokenomics, staking mechanisms, liquidity, and other DeFi aspects.
Familiarity with automation tools (Zapier, n8n, Make.com) or AI tools for analysis.
Key Performance Indicators (KPIs):
Quality and depth of research
Timeliness and usefulness of reports
Impact of recommendations on decision-making
Activity and engagement within the Web3 community
What We Offer:
Competitive Salary: $6,000 to $8,000 per month (depending on experience).
Crypto Payments: Salaries paid in USDT or ETH through our partner, P2B Exchange.
Solus Token Allocation: Allocation of Solus tokens following the official project launch.
Performance Bonuses: Eligibility for bonuses based on performance and KPIs.
Remote Work: Flexible hours and the ability to work from anywhere in the world.
Health Insurance: Comprehensive health insurance package.
Note on Employment:
All employees undergo an official onboarding process, including KYC verification, signing an NDA, and an employment contract compliant with the laws of your country of residence. After successfully completing a 3-month probationary period, you will become a full-fledged member of the Solus team.

Description
We are offering an opportunity to join our team and learn about cross-market trading strategies, focusing on identifying price differences of assets across multiple platforms. This role provides hands-on experience in financial technology, data analysis, and trading support.
As part of this position, you will:
Gain practical knowledge of market analysis and trading workflows
Learn how to recognize and evaluate opportunities across different platforms
Develop your skills in risk management and decision-making
Work with a mentor who will guide you step by step through the learning process
What we provide:
Comprehensive training program designed for beginners
Ongoing mentorship and professional support
Flexible schedule (approx. 1 hour a day required for study and practice)
Remote work setup with the possibility to grow into a larger role over time
This is a part-time, entry-level opportunity suitable for candidates with little or no prior experience. What matters most is your willingness to learn and apply new knowledge in practice.
Compensation: Competitive monthly pay structure with opportunities for progression as skills develop