Company
Crypto made easy 🚀
We are the bridge between your crypto world and everyday life; trade pairs, book flights and hotels, and purchase gift cards with your favourite currencies. All in one best-in-class digital experience. It's not rocket science.
🔗Apply link at the bottom of this post — don’t miss it!
Why Join?
By joining CryptoXpress, you'll be at the cutting edge of merging digital currency with real-world services and products. We offer a stimulating work environment where innovation and creativity are highly valued. This remote role provides the flexibility to work from any location, promoting a healthy work-life balance. We are dedicated to fostering growth and learning, offering ample opportunities for professional development in the rapidly expanding fields of AI, blockchain technology, cryptocurrency, digital marketing and e-commerce.
Role Description
We are seeking a Blockchain Engineer for a full-time remote position at CryptoXpress. This role focuses on building secure and scalable blockchain integrations and developing internal tools that enhance transparency, monitoring, and transaction insights across our crypto platform.
The ideal candidate will have experience working with Web3 technologies and an interest in creating advanced tools such as wallet tracking systems, funds flow visualization, and smart contract evaluation frameworks.
Key Responsibilities
- Design and build internal blockchain intelligence tools — such as wallet activity monitors, transaction flow visualizers, and wallet-to-wallet linkage maps — to support compliance, analytics, and user trust.
- Develop and optimize secure Web3 integrations, including wallet connection layers, on-chain transaction monitoring, and real-time balance syncing.
- Perform technical assessments and smart contract audits for third-party integrations to ensure operational security and platform integrity.
- Collaborate with engineering and product teams to transform raw blockchain data into meaningful features, dashboards, or automated alerts within the app ecosystem.
- Monitor and maintain blockchain infrastructure, including RPC endpoints, data feeds, and API reliability — ensuring uptime and responsiveness across chains.
- Contribute to the long-term scalability and security architecture for all blockchain-related components of the CryptoXpress platform.
Qualifications
- Proven experience as a Blockchain Engineer or similar role.
- Strong proficiency with Web3.js, Ethers.js, and blockchain data extraction techniques.
- Experience building blockchain dashboards, wallet explorers, or transaction monitoring tools.
- Familiarity with smart contract standards (ERC-20, ERC-721, etc.) and EVM-based chains.
- Understanding of blockchain security principles and transaction validation.
- Ability to work independently and collaboratively in a fast-paced environment.
- Bachelor’s degree in Computer Science, Engineering, or a related field (preferred but not mandatory).
How to Apply:
Interested candidates must complete the application form at
https://forms.gle/aRj3iqyS5MdhWmFH9
Join us and become a driving force behind CryptoXpress’s content strategy, helping to shape the conversation in the cryptocurrency space! 🚀
💡Pro Tip: Tips for Application Success
- Show your enthusiasm for crypto, travel, and digital innovation
- Mention any self-learning initiatives or personal crypto experiments
- Be honest about what you don’t know — we value growth mindsets
- Explore CryptoXpress before applying — take 2 minutes to download and try the app so you understand what we’re building

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2. Roll out and advocate for new engineering principles and processes while supporting, maintaining, and updating existing ones.
3. With the help of your team members, educate and execute on Software Engineering best practices for testing, deploying, and developing code.
4. Be ready to roll up sleeves to assist your team when there are most urgent, difficult or critical developments to produce
5. Drive the apt technology choices (e.g. languages, libraries, frameworks)
6. Layout the technology architecture for both immediate and long term growth
7. Take appropriate risks for technical debt to develop prototypes in a short timescale
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1. Mentor and guide the professional and technical development of your team members.
2. Hire and build a Software development team
3. Represent the Technology progress on the company vision to the Board/CXOs
4. Participate with Core-team in making key Product and tech roadmap related decisions
*Experience*
1. You have 7+ years of relevant engineering work experience.
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3. You have experience architecting enterprise Blockcahin applications (Any Blockchain framework is fine but Hyperledger will be preferred)
4. You have a strong technical background and are able to contribute to design and development across the software product lifecycle
5. You are familiar with our tech stack (Hyperledger/Nodejs / ReactJs / PostgreSQL / AWS / Linux)
6. You are familiar with implementing organizational processes using tools like Jira / Git / Slack etc.
7. You've worked on large-scale SaaS products and can rapidly familiarize yourself with complex products.
8. You have a strong focus on metrics and know how to measure the health of engineering teams.
9. Strong organizational skills and a focus on developing processes support the long term growth of the product engineering group.
10. You have experience running Agile teams.
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- Extensive knowledge of blockchain architectural concepts and the development of storage solutions.
- He shall have a solid understanding of Blockchain foundations, consensus algorithms, and smart contracts
- Excellent knowledge of blockchain frameworks, for example, Hyperledger Fabric, R3 Corda, and Ethereum
- Good command over the several consensus algorithms used for the Bitcoin Blockchain, Ethereum, Byzantine fault-tolerant algorithms
- Strong understanding of cryptography, in order to provide greater security and immutability to the system
-
Drive high-level decisions about Sperax Protocol architecture, incentive structures and features in collaboration with the Product and Economics Research team
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- Research on multiple blockchain protocols
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- 4+ years of development experience and at least 1 year of smart contract developer experience in solidity
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- Knowledge and experience of the test-driven development
- Very good understanding of the Blockchain technologies, especially Ethereum
- Familiar with the common Smart Contract vulnerabilities
- Solid understanding about Ethereum infrastructure, e.g. like Gnosis, TheGraph
What we offer:

- Expert with DeFi, NFT and latest Crypto Concepts. Should have working experience on these concepts
- Strong knowledge with Smart Contract best practices
- Experience with React JS & Node JS Required (We prefer MERN Stack). Having TypeScript experience would be an advantage
- If you have understanding of AWS and how setup and deployment of Project elements work, would be an advantage.
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- Handle the solidity
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https://electronlabs.org/">Electron Labs is building a new protocol to make various blockchains interoperable. Our goal is to enable cross-chain contracts to connect with each other in the same way as same-chain contracts connect i.e., via function calls. We have developed a new in-house tech called https://garvitgoel.medium.com/what-is-bdlc-and-how-it-works-5716fbbacde8">Bi-Directional Light Client that allows a smart contract to independently verify whether the cross-chain transactions submitted to it are valid. We further use ZK-SNARKS to reduce the gas cost of running the light client on-chain.
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- A good grasp of blockchain fundamentals, various consensus algorithms, and detailed knowledge of at least one major blockchain.
- Previous work (demonstrable) in blockchain technology, web3, or protocol development
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- Write go-lang based networking relayers that enable communication between blockchains and zk-provers.
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- Write kickass documentation.
Location: Delhi NCR, India | Remote

Responsibilities:-
Ø Research, design, develop, and test blockchain technologies.
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Ø Document new solutions as well as maintaining that of existing ones.
Skills:-
Ø Strong software development background.
Ø Experience working with large codebases.
Ø Experience working with open-source projects.
Ø Proficiency in one of the following languages: C++, Java, JavaScript ( Depending on the project ).
Ø Strong knowledge of common algorithms and data structures.
Ø Familiarity with basic cryptography.
Ø Familiarity with P2P networks.
Ø Strong knowledge of bitcoin-like blockchains.
Ø Strong knowledge of concurrency and writing efficient and safe multithreaded code.
Ø Strong knowledge of STL, C++11 ( In the case of a blockchain-based on C++ ).
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About Mastercard
We are the global technology company behind the world’s fastest payments processing network.
We are a vehicle for commerce, a connection to financial systems for the previously excluded, a technology innovation lab, and the home of Priceless.
We ensure every employee has the opportunity to be a part of something bigger and to change lives.
We believe as our company grows, so should you.
We believe in connecting everyone to endless, priceless possibilities.
Overview Services and Data is helping to shape the future of data insights by leveraging billions of anonymized, aggregated transactions in a 10 petabyte date warehouse to help financial institutions, merchants, media, and governments manage their businesses more effectively.
Advanced Analytics is charged with servicing clients by centralizing and optimizing the world class analytical, modeling, software coding, data sourcing, product development, product management, econometrics, and associated delivery capabilities of the MasterCard Advisors organization.
It focuses on creating innovative technology solutions which leverage technology in the data science, artificial intelligence and analytics arenas; on enabling the field with industrialized, repeatable products and on researching and incubating emerging technology to determine how they might apply to our customers and facilitate positive outcomes.
What we are re looking for
- Are you motivated by developing new Analytical skills, leading to insights into issues and developing recommendations that add real value to clients?
- Have you managed the client independently and effectively?
- Do you want to play a key role in driving a world beyond cash?
- Leading the formulation of artificial intelligence and machine learning solution objectives. Working on technical requirements based on user need.
- Responsible for creating the framework of solutions that take data intensive and complex business challenges and provide easily consumed and automated outcomes
- Using unique visualization techniques, condenses large volumes of complex ideas into elegant and simple visual models
- Determine opportunities to exploit new data sources or leverage new outcomes from existing data sources, by applying new models and algorithms to create business value
- Influences a client's strategic decisions by using deep industry expertise and deploying innovative Deep Learning analytics solutions in the operational systems Leadership Skills
- Works closely with clients/internal stakeholders to understand their business needs and design a technical solution
- Proving viability of the solution through mechanisms like proof-of-concepts
- Thought Leadership in AI – Developing compelling audience-specific messages and tools. Capture and share best practices and insights internally and with partners and customers.
- Self-driven, energetic, creative with ability to work in global teams.
- Excellent communication skills and a wide knowledge base, to convince the Stakeholders on application of AI/ML
- Provide technical leadership to the team members in relevant topics on AI/ML
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- Curious - our key contributors are always seeking to grow their knowledge, to gain new perspectives, and to find better ways forward by researching and showcasing latest AI tools, techniques and applications
- Tenacious - self-starters who will take ownership of projects and bring them to completion despite difficulties or setbacks
- Consulting and Project Management Experience preferred
Functional and Technical Skills
- Experience in building and implementing AI application in any of the two domains - Fraud, risk, marketing, finance, operations for Banks, Fintech, Ecommerce, merchants or retailers
- Has a deep understanding of business value industry requirements and advanced analytic models (statistical, operations research, computing process)
- Responsible for building applications using artificial intelligence/machine learning technology, applying latest industrial and academic developments, prefer Kaggle hackathon participant
- Expertise in deep learning frameworks for Production Systems like Tensorflow, Keras (for RPD and neural net architecture evaluation), PyTorch and Xgboost, Caffe, Theono
- Proficient in Deep Learning algorithm techniques like Random Forest, GBM, KNN, SVM, Bayesian, Text Mining techniques, Multilayer Perceptron, Neural Networks – Feedforward, CNN, LSTM’s GRU’s.
- Optimization techniques – Activity regularization (L1 and L2), Adam, Adagrad, Adadelta concepts; Cost Functions in Neural Nets – Contrastive Loss, Hinge Loss, Binary Cross entropy, Categorical Cross entropy; developed applications in KRR, NLP, Speech and Image processing
- Expertise in classical Machine Learning algorithms like Logistic Regression, Decision trees, Clustering (K-means, Hierarchical and Self-organizing Maps), TSNE, PCA, Bayesian models, Time Series ARIMA/ARMA, Recommender Systems - Collaborative Filtering, FPMC, FISM, Fossil etc
- Extensive experience in statistical tools and programming environments like Python, R, SAS, SQL
- Experience with BIG DATA platforms - Hadoop, Hive, Spark, GPU Clusters for deep learning
Qualifications
- Minimum Graduate degree in Mathematics/Computer Science/Engineering

