Front-End Development Intern (Web Interface and User Experience)
We are seeking ambitious students specializing in computer science to join us in revolutionizing the cloud, data, AI, and web3 sectors. As part of Openmesh, a global initiative dedicated to creating open data and infrastructures, you will contribute to the development of a large-scale open data cloud and analytics engine. This unique opportunity will shape the next generation of technology and offers a platform for you to unlock your career potential.
This internship will count towards your industry experience requirement, where you can gain valuable on-the-job training for up to 12 weeks. The position is fully paid and based in our Sydney George St. Office. By joining our world-class team, you not only have the chance to secure a permanent job placement but also receive competitive salaries and can participate in exciting cash prize competitions.
About Openmesh and Xnode:
Currently, a few corporations control the majority of the world's data and IT infrastructure, leading to information asymmetry and various social issues. Openmesh is a cutting-edge open-source cloud infrastructure and global data network that aims to store important global data without intermediaries. It is the largest open web3 data platform, covering a significant portion of the crypto and web3 ecosystem. In the future, our goal is to expand data coverage to include public health and scientific research.
One of our core products, Xnode, empowers developers to effortlessly create decentralized data clouds with data connectivity, APIs, and analytics engines. The platform provides significant cost reductions and simplified deployment processes. Additionally, Pythia, our powerful analytics and query engine, enables users to transform raw data into actionable insights. Unified APIs offer universal access to crypto and web3 data without requiring licenses or setup fees.
Our Vision:
At Openmesh, we believe in democratizing data and addressing the issue of information asymmetry on a global scale. High-quality and reliable data is essential for the proper functioning of the internet and digital applications. We consider access to unaltered information as a fundamental right. Openmesh is open-source and governed by an open-source community, ensuring that no single authority can manipulate data or control access.
The Opportunity:
As an intern, this paid position can count towards fulfilling the industry experience requirement of PEP 40H. You will have the opportunity to learn from experts in the fields of Data, Cloud, Blockchain, AI, and Web3 Infrastructure, including visionaries, senior engineers, and product owners. Access to open-source technology, hackathons, virtual conferences, mentoring sessions, R&D infrastructure, workshops, and the chance to work in-person or remotely will be provided. Additionally, top-performing candidates may receive a full-time offer, providing a clear path for career progression.
By participating in this program, you will gain practical experience through working on a project that challenges your problem-solving skills, boosts your ability to present ideas, cultivates teamwork, and instills a professional mindset. The specialized knowledge and skills acquired during the internship will equip you for a successful career at Openmesh.
Why Join Us:
By joining Openmesh, you will have the opportunity to lead a groundbreaking product that reshapes the landscape of data management and accessibility. Collaborate with a global community of innovators and thought leaders in the decentralized space, making a significant impact on the worldwide accessibility and utilization of data, promoting transparency, efficiency, and democratization. Our work environment is dynamic, challenging, and rewarding, and we offer competitive compensation and benefits.
In addition to academic skills, we value what makes you unique - your personal qualities, outside interests, and achievements beyond university that demonstrate the kind of person you are and the value you can bring to our team.
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.
Senior Software Engineer
Senior Full-Stack Developer (Web & APK) - Partnership Role
About the Role:
I am Sadr B, founder of a private development agency. I am currently building a dedicated team of elite developers to handle high-value web and mobile (APK) projects. I am not just looking for a freelancer; I am seeking a long-term partner to grow this agency with me.
The Partnership Structure:
Team Spirit: We work as a unified team. You handle the technical execution (Web/App), and I manage agency growth, strategy, and client relations.
Negotiated Rates: We do not post fixed budgets upfront. Every project is discussed in DM based on the specific client quote and requirements.
50/50 Milestone Payment: Security is our priority. Once the client pays the initial deposit, 50% of your fee is funded into LaborX Escrow immediately. The final 50% is released upon delivery and client approval.
Payment: All transactions are handled in Crypto (USDT/Polygon) for speed and transparency.
Requirements:
Expertise in Full-Stack development (React, Node.js, Flutter preferred).
Strong experience in delivering high-quality Android APKs.
A portfolio demonstrating your ability to handle professional-grade projects.
How to Apply:
Please DM me with your portfolio and a brief introduction of your experience. Let’s discuss how we can build this agency together.
Looking for a Full Stack and Blockchain Developer
Junior / Middle Metaverse Developer (Unity / Web3 / VR)
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.