Head of Custody Security

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 syndicate of elite media buyers, data scientists, and creative capos dominating gambling, crypto, nutra, and adult niches. We operate on pure performance: if our partners win, we win.
We are expanding our crypto empire and need a Web3 Growth Hacker, our Enforcer of Expansion, to scale projects, grow communities, and execute high-ROI campaigns across Web3 ecosystems.
Working at Target Mafia
This is a fast-paced, results-driven role where strategy meets execution. You’ll identify growth opportunities, implement viral campaigns, and optimize channels to maximize performance. Your work will directly impact revenue and user acquisition across multiple projects.
Role
As a Web3 Growth Hacker, you will drive user acquisition, scale communities, and execute growth strategies that expand Target Mafia’s influence in the crypto space. You’ll combine creative tactics, data analysis, and guerrilla marketing to deliver measurable results.
Responsibilities
Plan and execute growth campaigns across Telegram, Discord, Twitter, and other Web3 channels.
Build partnerships and collaborations with crypto communities and influencers.
Track, analyze, and optimize campaigns for maximum ROI.
Identify viral trends and implement them to boost engagement and user acquisition.
Work closely with media buyer dons and creative capos to align growth efforts with marketing strategies.
Skills Required
Growth Hacking & Performance Marketing
Social Media Strategy & Community Building
Crypto & Web3 Knowledge
Influencer & Partnership Management
Data Analysis & Campaign Optimization
Guerrilla Marketing & Viral Campaign Execution
Creativity & Fast Problem Solving
Reasons to Join Our Team
Lead high-impact campaigns in trending Web3 and crypto markets
Work with an elite, performance-driven mafia of media buyers
Performance-based compensation in stablecoins, with bonuses for growth wins
Hands-on experience scaling high-stakes projects
Flexible, dynamic, and rewarding environment for top-tier talent

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

Responsibilities

Conduct, create, and execute testing of security controls across identity management, key management, and infrastructure (network and cloud) setups.

Assist with client assurance tasks, including addressing Requests for Proposals (RFPs), Requests for Information (RFIs), and Due Diligence Questionnaires (DDQs).

Recognize and assess trends in client inquiries and offer feedback to internal teams for enhancing documentation and control readiness.

Perform security due diligence and continuous monitoring for Web3/blockchain vendors, by evaluating their control maturity, reviewing SOC reports and security documents, and identifying any remaining risks.

Coordinate external audit activities, such as walkthroughs, gathering evidence, and tracking responses.

Pinpoint and study gaps in current and new processes, and then create and monitor remediation suggestions to completion (e.g., onboarding processes).

Develop and sustain knowledge of pertinent financial regulatory security requirements and guarantee control alignment.

Investigate and distribute details on information security best practices, emerging risks, and mitigation approaches with internal teams.

Evaluate and suggest next-generation security tools, automation, and technologies to enhance overall security stance.

Review potential security impacts on the platform resulting from blockchain network or protocol upgrades.

Requirements

Minimum of 8 years of suitable experience in security assurance, audit, compliance, or cloud security engineering.

Demonstrated proficiency in testing and affirming security controls within IAM, key management, and network/cloud environments.

Deep comprehension of Identity and Access Management (IAM) principles.

Familiarity with cryptographic key management, HSMs, and KMS systems.

Strong understanding of cloud and network security architecture and configuration.

Proven track record supporting SOC 1, SOC 2, ISO 27001, PCI DSS, or similar external audits and evaluations.

Exposure to leading cloud platforms (AWS, GCP, Azure) and infrastructure-as-code practices.

Experience in preparing client assurance materials, RFP/RFI/DDQ responses, and evidence documentation.

Knowledge of blockchain platforms or digital asset custody systems is advantageous.

Ability to work autonomously and handle demanding situations effectively.

Outstanding verbal and written communication skills.

Pragmatic and solution-driven mindset, capable of harmonizing security requirements with operational viability and business demands.

Who We Are:

Ethena Labs is a pioneering company in the realm of DeFi, dedicated to developing cutting-edge financial products. Ethena is the creator of a synthetic dollar protocol on the Ethereum platform, providing a crypto-focused solution for money known as USDe, alongside a globally accessible dollar savings asset called sUSDe.

Our primary objective is to offer truly crypto-native financial solutions that are universally accessible, bridging the gap between traditional finance (TradFi) and the digital asset economy. Transparency, efficiency, and empowerment of both individuals and institutions are at the core of our values.

What we are Doing:

Ethena Labs is actively progressing in the creation and deployment of a range of innovative products designed to tackle significant challenges and open up new opportunities within the digital finance sphere.

Our main product, USDe, is a synthetic dollar collateralized by digital assets and adopts a unique delta-neutral hedging strategy to maintain its peg – offering a scalable and censorship-resistant digital dollar.

In addition to USDe, we offer sUSDe, which generates crypto-native rewards from funding rates in derivatives markets, providing an alternative to traditional finance-tethered products.

Moreover, we are continuously developing solutions geared towards fostering institutional adoption of digital assets. Our partnership with Securitize and Blackrock's BUIDL fund gave rise to USDtb, which serves as a more conventional, asset-backed stablecoin, utilizing established financial infrastructure to cater to institutional clientele. Additionally, iUSDe is crafted specifically for traditional financial institutions, integrating necessary compliance features to enable access to the crypto-native rewards our protocol generates in an institutional-friendly manner.

Our most ambitious project to date is Converge, a joint blockchain initiative with Securitize. This hybrid blockchain platform operates as a nexus where DeFi aligns with the needs of CeFi and TradFi, providing an issuance layer for tokenized assets that seamlessly integrates with existing DeFi protocols to offer institutions a space to engage in the decentralized economy.

Through these offerings, Ethena Labs is not solely introducing new financial products but establishing the fundamental infrastructure for a more open, efficient, and interconnected global financial system.

The Role

As the Head of Security, your role will involve leading and owning the comprehensive security strategy for Ethena. You will be responsible for all security aspects, ensuring the safeguarding of assets, infrastructure, data, personnel, and facilities. This includes cybersecurity, blockchain security, physical security, and operational security.

This pivotal role offers the opportunity to instill a security-first culture in a dynamic, high-stakes environment where DeFi innovations intersect with real-world risks. You will collaborate closely with various teams, such as Product Engineering, DeFi Engineering, Security Engineering, DevOps, and non-engineering teams, to embed security across all operations, from smart contract development to physical site protection. By spearheading compliance, incident response, and proactive threat mitigation efforts, you will secure users' funds, maintain regulatory compliance, and position the company for scalable growth in the evolving crypto landscape.

What You'll Do

Develop and implement a comprehensive security strategy covering cybersecurity, blockchain security, physical security, and operational security in alignment with industry standards and DeFi-specific risks.

Oversee blockchain and smart contract security, including audits, formal verification, secure key management, and protections against exploits.

Establish a robust cybersecurity framework encompassing threat detection systems, secure DevOps practices, penetration testing, and vulnerability assessments.

Manage physical security operations, including access controls, surveillance, executive protection programs, and site audits.

Drive compliance and regulatory alignment, prepare for audits, and liaise with regulators.

Establish incident response and crisis management plans, conduct simulations and drills for cyber, physical, or hybrid threats.

Promote a security-first culture through training, workshops, and integration of security-by-design principles.

Lead and scale the security team, overseeing Security Engineers and potential physical security specialists.

Implement real-time monitoring, threat intelligence, and performance metrics for digital and physical assets.

Manage security budgets, vendor relationships, and resources.

Anticipate emerging threats in DeFi, adapting systems for new products, integrations, and expanded operations.

What We're Looking For

Over 10 years of experience in security leadership roles with expertise in cybersecurity, physical security, and risk management.

Demonstrated track record in developing and implementing security strategies, including blockchain/DeFi security and physical protections.

Strong leadership skills, experience building high-performing teams, and oversight of engineers.

Expertise in incident response, crisis management, threat intelligence, and compliance frameworks.

Proficiency in secure software development, infrastructure security, and relevant tools.

Excellent communication and collaboration abilities.

Strategic thinking, adaptability, problem-solving skills, and a proactive approach to risk management.

Experience in budget and vendor management for security operations.

Bachelor’s or Master’s degree in a related field; advanced certifications are a plus.

Familiarity with DeFi-specific risks and technologies highly desirable.

Why Ethena Labs?

Join a forward-thinking company revolutionizing decentralized finance.

Work with a collaborative and innovative team.

Enjoy a flexible, remote-friendly work environment with growth opportunities.

Share our mission of separating the dollar from the state.

We welcome your application and will be in touch after review. We look forward to potentially working together.