Senior Content Marketing Manager
KeyValue
We are a group of innovators and researchers dedicated to enabling businesses and developers globally to leverage and create on decentralized platforms.
Our proficiency spans various areas including Ethereum and Starknet protocol development, layer-2 solutions, cryptography research, DeFi, security assessments, formal verification, real-time monitoring, smart contract deployment, and dapps and enterprise solutions.
Engaged in addressing complex challenges in the blockchain sector, we frequently partner with leading organizations like Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and more.
Currently, we are a remote team of over 350 professionals spread across 66+ countries.
About the Role
We are in search of an initiative-driven Content Marketing Lead to lead our content projects at a fast-growing, remote-first company deeply integrated in the Ethereum and blockchain communities. This opportunity suits an independent individual well-versed in blockchain culture and Ethereum's core ideals, thriving in a global team environment. As a hands-on leader, you will initially focus on creating and managing content across various platforms, with the potential for growth into a strategic position overseeing broader content marketing strategies.
The ideal candidate is passionate about storytelling, attentive to details, and possesses a mix of creative, project management, and analytical skills necessary to ensure our content resonates with our audience and reflects our brand values.
This role presents a distinctive chance to contribute to technological advancements, generating compelling content that promotes awareness and usage of blockchain tools and infrastructure. You will operate in a dynamic setting where you can explore your ideas and play a significant role in shaping our marketing efforts.
Primary Responsibilities
Content Strategy and Implementation:
Devise and execute targeted content strategies aligned with brand objectives.
Collaborate with Engineering and Design teams to develop and launch campaigns enhancing visibility and engagement with our products.
Supervise the creation of diverse content forms such as technical blog posts, social media updates, video scripts, design briefs, etc.
Produce engaging posts on various platforms like Twitter, LinkedIn, and others.
Content Management:
Coordinate collaboration among marketing, engineering, design, sales, and legal departments for cohesive brand promotion.
Maintain a content calendar to ensure consistent delivery and engagement across platforms.
SEO and Analytics:
Implement SEO strategies to boost content visibility and organic growth.
Utilize campaign reports and insights to optimize content strategies in partnership with Marketing Data Analyst.
Community Engagement and Market Research:
Engage with Ethereum and blockchain communities to track trends and hot topics.
Conduct market and competitor research to inform content decisions.
Leadership and Team Management:
- Support in team building, mentoring, and management within the content marketing department.
Essential Qualifications
5+ years of content marketing experience in the blockchain industry, showcasing successful content strategy execution.
Background in B2B, B2D, B2C marketing within blockchain.
Deep understanding and alignment with onchain marketing principles and Ethereum ecosystem.
Superior English language skills with excellent writing and editing abilities.
Proficient project management skills to handle multiple initiatives and meet deadlines in a fast-paced environment.
Strong leadership capabilities to inspire and guide team members.
Creative and strategic mindset with ability to collaborate across departments.
Eagerness to understand complex technologies with a proactive work ethic.
Knowledge of basic SEO and its social media applications.
Familiarity with various social media platforms like Twitter, LinkedIn, TikTok, and more.
Experience using CRM software and social scheduling tools.
Desired Qualifications
Advanced degree in Marketing, Communications, or related field.
Proficiency in advanced SEO practices and tools.
Familiarity with content management systems (CMS).
Experience with specific tools like Notion, Hubspot, Salesforce, Apollo.
Bachelor's degree in marketing, communications, journalism, or a related field.
Note: Your personal information provided to Demerzel Solutions Limited (dba Nethermind) is processed as per UK GDPR guidelines for recruitment purposes. For more information on data handling, refer to the privacy policy.
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UI/UX Designer
DeGameVerse is building a next-generation Web3 gaming ecosystem where developers create games and players explore, play, and earn through a unified platform experience.
We are focused on:
Walletless onboarding
Mobile-first gaming experience
AI-assisted game creation
Clean and accessible Web3 UX
This is an early-stage startup currently building its core founding team.
Role Overview
We are looking for a creative UI/UX Designer who can help shape the visual identity and user experience of DeGameVerse.
You will work closely with the founder and development team to design a smooth, modern, and engaging platform experience for both players and developers.
This is a startup builder role with high creative ownership.
Responsibilities
Design user-friendly interfaces for web and mobile
Create UI flows for player dashboard, developer dashboard, and game hub
Build consistent design systems and reusable components
Improve user onboarding and overall UX experience
Design wireframes, mockups, and interactive prototypes
Collaborate closely with developers during implementation
Ensure responsive and modern UI standards
Requirements
Experience with Figma or similar design tools
Strong understanding of UI/UX principles
Ability to create clean, modern, and intuitive interfaces
Good communication and collaboration skills
Startup mindset and problem-solving ability
Bonus Skills
Experience designing gaming or Web3 products
Motion UI / animation knowledge
Basic frontend understanding (HTML/CSS/React concepts)
Experience with mobile-first design systems
What We Offer
Early core team opportunity
Equity-based contribution model
High creative freedom and ownership
Opportunity to help shape a new Web3 gaming ecosystem
Portfolio-level product design experience
⚠️ Important Note
This is an early-stage startup role.
No fixed salary initially. Compensation is equity-based until funding or revenue is secured.
Game Developer / AI Integration Developer — Startup
DeGameVerse is building a next-generation Web3 gaming ecosystem where developers create games and players play, progress, and earn within a unified platform.
We are building:
▫️ AI-assisted game creation tools
▫️ Web-based casual & idle games
▫️ Player-first reward economy
▫️ Walletless onboarding experience
This is an early-stage startup forming its core founding team.
Role Overview
We are looking for a creative and technically strong Game Developer who can also explore AI-driven game generation and integration.
You will help build engaging web-based games and connect them to the DeGameVerse ecosystem.
This is a builder role, not a traditional employment position.
Responsibilities
Develop simple to mid-level web games (JavaScript / Phaser / Unity WebGL)
Design core gameplay mechanics (progression, rewards, loops)
Integrate games into DeGameVerse platform ecosystem
Work on AI-assisted game creation concepts and prototypes
Handle game logic, scoring, and interaction systems
Collaborate with full-stack developer for platform integration
Optimize games for mobile-first web experience
Requirements
Strong understanding of JavaScript or game development frameworks
Experience building browser-based or mobile-friendly games
Good grasp of game mechanics and player engagement loops
Creative mindset for designing fun and scalable gameplay
Bonus Skills
Experience with Phaser / Unity WebGL / Three.js
Exposure to AI tools (GPT APIs, procedural generation, etc.)
Interest in Web3 gaming or digital economies
Experience with casual or idle game development
What We Offer
Early founding team position in DeGameVerse ecosystem
Equity-based contribution model
Opportunity to publish games under a shared ecosystem
High creative freedom in game design and experimentation
Direct collaboration with core product founder
Important Note
This is an early-stage startup role.
There is no fixed salary at this stage. Compensation is based on equity and long-term ecosystem growth.
How to Apply
Send:
Portfolio / GitHub / game demos
Short intro about your experience
Why you want to build Web3 games
Any previous projects (if available)
Full Stack Developer (Core Builder) — Startup
DeGameVerse is building a next-generation Web3 gaming platform where developers can create games and players can play, progress, and earn inside a unified ecosystem.
We are focused on:
Walletless onboarding
AI-assisted game creation
Player-first game economy
Mobile-friendly gaming experiencesexperiences
This is an early-stage startup currently building its core founding team.
Role Overview
We are looking for a passionate Full Stack Developer to help build the core infrastructure of DeGameVerse.
You will work directly with the founder to develop the platform architecture, user systems, game hub, and Web3 integrations.
This is not a traditional job position. We are building with a startup mindset and long-term vision.
Responsibilities
Build responsive frontend interfaces using React / Next.js
Develop backend APIs and database systems
Implement authentication and user management
Integrate MPC wallet / Web3 onboarding systems
Create scalable game hub architecture
Optimize platform performance and security
Collaborate on product decisions and feature planning
Requirements
Strong knowledge of React / Next.js
Experience with backend development (Node.js, Firebase, Supabase, etc.)
Understanding of REST APIs and databases
Basic understanding of Web3 concepts
Strong problem-solving skills
Ability to work independently in a startup environment
Bonus Skills
Wallet integration experience
Web3 or blockchain project experience
Multiplayer or gaming platform experience
AI tool integration experience
What We Offer
Early core team position
Equity-based opportunity
Direct impact on product direction
Opportunity to help build a large-scale Web3 gaming ecosystem from the ground up
Important
This is an early-stage startup role.
No fixed salary initially. Compensation will be equity-based until funding or revenue is secured.
Senior Data Scientist / ML Engineer – Crypto Payments & Lightning Network
Bitrefill is the world's leading crypto lifestyle platform. We enable millions of users globally to pay for gift cards, mobile phone refills, and everyday goods using Bitcoin, Lightning Network, and other digital assets. Our long-term goal is to provide everyone with the tools to use crypto as real "digital money" daily — without needing to register for additional services or log into a web platform.
We are now actively building a new product: the Bitrefill crypto card for paying for goods and services in everyday life.
The Role
We are looking for a Senior DS/ML Engineer to help us make data-driven decisions across fraud detection, Lightning Network liquidity optimization, user behavior modeling, and risk scoring for the crypto card.
You won't just build models — you'll help shape the ML infrastructure of a fast-growing crypto-payments startup.
What You'll Do
Fraud & Risk ML — Develop anomaly detection models, transaction scoring for withdrawals, and real-time predictive rules to flag suspicious activity.
Lightning Network optimization — Build models to optimize payment routing, channel liquidity management, and predict channel health.
Crypto card infrastructure — Create credit risk models and user scoring for card issuance without traditional credit history.
LTV & churn prediction — Forecast user behavior to improve retention and conversion, especially in low-crypto-adoption countries.
Product & growth analytics — Develop ML-driven hypotheses for A/B testing and recommendation systems (e.g., which gift cards to offer).
Data pipeline & MLOps — Help build pipelines for training and deploying models to production (alongside engineers).
Requirements
5+ years of experience in Data Science / Machine Learning, ideally in fintech, payments, crypto, or high-throughput transactional systems.
Strong experience building anti-fraud models, time series forecasting (for transactions), LTV predictions, or classification/clustering models.
Python — solid proficiency (pandas, scikit-learn, xgboost/lightgbm; PyTorch/TensorFlow is a plus).
SQL — advanced level.
Experience with Airflow, dbt, or similar ETL/ML pipeline tools.
Understanding of Lightning Network basics (or strong willingness to dive deep within 1–2 weeks).
English — sufficient to discuss ML metrics and business problems fluently.
Big Pluses
Experience with graph models (Node2Vec, GNNs) for transaction chain detection.
Familiarity with blockchain analytics (on-chain data, addresses, transactions).
Experience in credit scoring without traditional credit history.
MLOps skills (Docker, Kubeflow, MLflow, or at least deploying models via FastAPI).
Personal experience using Bitrefill or crypto as a payment tool.
We Offer
Fully remote work from anywhere in the world (with ~4–6 hours overlap with Stockholm time zone).
Opportunity to build an ML system from scratch in a startup that is truly changing how people use crypto.
Competitive salary + equity (tokens) or profit-sharing.
Minimal bureaucracy — maximum responsibility and freedom.
Work with cutting-edge technologies: Lightning Network and crypto cards.
How to Apply
Send your resume and a link to your GitHub / Kaggle / project where you solved a fraud, time series, or risk modeling problem. Mention if you have experience with Lightning or blockchain analytics — if not, just tell us how quickly you can learn new domains.
