Blockchain Developer

Job Title : Lead Blockchain Developer

Experience : 5+ Years

Location : Indore (WFO/Remote)

Employment Type : Contractual

Job Summary :

We’re seeking a Lead Blockchain Developer with 5+ Years of experience in building scalable, decentralized applications. The ideal candidate has expertise in Rust, Golang, Solidity, and Node.js, with hands-on experience in Geth, Docker, and blockchain infrastructure.

Mandatory Skills : Rust, Golang, Solidity, Node.js, Geth, Docker, Ethereum architecture, Smart Contracts, Blockchain Protocols.

Key Responsibilities :

• Design and develop core blockchain protocols and infrastructure.
• Build and deploy secure smart contracts using Solidity.
• Develop tools/services for Ethereum and related networks.
• Work on performant node-level development using Rust and Golang.
• Build APIs and backend services in Node.js.
• Manage containerized environments using Docker.
• Collaborate on system architecture and conduct code reviews.
• Stay updated on blockchain trends and implement best practices.

Key Requirements :

• Strong skills in Rust, Golang, Solidity, Node.js.
• Deep understanding of Ethereum, Geth, and blockchain concepts.
• Experience with Docker, API development, and smart contract security.
• Knowledge of consensus algorithms, cryptography, and performance tuning.
• Familiarity with CI/CD pipelines and DevOps tools is a plus.

Preferred Qualifications :

• Bachelor's/Master’s in CS or related field.
• Prior contributions to open-source or Web3 projects.

As a Quantitative R&D Engineer, you’ll join the team responsible for designing, validating, and scaling trading strategies that interact directly with crypto markets.

You’ll work at the intersection of statistics, code, and markets — exploring data, prototyping logic, and building tools that convert ideas into capital allocation engines.

🔍 What You’ll Work On

• Analyze on-chain and market data to identify inefficiencies and behavioural patterns.
• Develop and prototype systematic trading strategies using statistical and ML-based techniques.
• Contribute to signal research, backtesting infrastructure, and strategy evaluation frameworks.
• Monitor and interpret DeFi protocol mechanics (AMMs, perps, lending markets) for alpha generation.
• Collaborate with engineers to turn research into production-grade, automated trading systems.
• Explore MEV, cross-chain arbitrage, and predictive modelling for on-chain behaviour.

✅ Who You Are

• You’re curious, analytical, and eager to work where code meets markets.
• You enjoy designing systems that act autonomously and uncover edge in complex, noisy data.
• You’re comfortable working in an experimental, high-ownership environment.

Ideal Traits

• Proficiency in Python and experience working with data (Pandas, NumPy, etc.)
• Understanding of probability, statistics, or ML concepts.
• Strong interest in markets, trading, or algorithmic systems.
• Self-driven and comfortable with ambiguity, iteration, and fast learning cycles.

📚 Bonus Points For

• Experience with backtesting, feature engineering, or strategy evaluation.
• Familiarity with crypto primitives (AMMs, perps, mempools, MEV, etc.)
• Projects or research involving trading bots, alpha signals, or data modelling.
• Use of on-chain analytics tools (Dune, The Graph, Nansen, etc.)
• Participation in hackathons, quant competitions, or open-source work.

🎁 What You’ll Gain

• Work on live systems that deploy real capital in 24/7 crypto markets.
• Access to proprietary infrastructure, backtesting tools, and strategy libraries.
• Mentorship from experienced quants, traders, and DeFi engineers.
• Freedom to explore, test, and scale your ideas into real-world performance.
• A high-trust, fast-moving team focused on pushing boundaries.

Who we are

CoinCROWD is building the future of crypto spending with CROWD Wallet, a secure, user- friendly wallet designed for seamless cryptocurrency transactions in the real world. As the crypto landscape continues to evolve, CoinCROWD is at the forefront, enabling everyday consumers to use digital currencies like never before.

We’re not just another blockchain startup—we’re a team of innovators, dreamers, and tech geeks who believe in making crypto fun, easy, and accessible to everyone. If you love solving complex problems and cracking blockchain puzzles while sharing memes with your team, you’ll fit right in!

What you’ll be doing

As a key member of our engineering team, you will be responsible for designing, developing, and maintaining robust, scalable, and high-performance backend systems that support CoinCrowd’s

innovative products.

You will be responsible for...

• Designing and implementing blockchain-based applications using QuickNode, Web3Auth, and Python or Node.js.

• Developing and maintaining smart contracts and decentralized applications (dApps) with a focus on security and scalability.

• Integrating blockchain solutions with CROWD Wallet and other financial systems.

• Collaborating with frontend developers, product managers, and other stakeholders to deliver seamless crypto transactions.

• Ensuring high availability and performance of blockchain infrastructure.

• Managing on-chain and off-chain data synchronization.

• Researching and implementing emerging blockchain technologies to improve CoinCROWD’s ecosystem.

• Troubleshooting and resolving blockchain-related issues in a timely manner.

• Ensuring compliance with blockchain security best practices and industry regulations.

• Contributing to architectural decisions and best practices for blockchain development.

What we need from you

We're looking for dynamic, self-motivated individuals who are excited about shaping the future of crypto spending;

• This will be a Full-time role.

• May require occasional travel for conferences or team meetups (Yes, we love those!).

• Bonus points if you can beat our CTO in a game of chess or share an awesome crypto meme!

• Location - WFH initially

What skills & experience you’ll bring to us

• 3 to 10 years of experience in software development, with at least 3+ years in blockchain development.

• Strong knowledge of QuickNode and Web3Auth for blockchain infrastructure and authentication.

• Proficiency in Python or Node.js for backend development.

• Experience in developing, deploying, and auditing smart contracts (Solidity, Rust, orequivalent).

• Hands-on experience with Ethereum, Polygon, or other EVM-compatible blockchains.

• Familiarity with DeFi protocols, NFT standards (ERC-721, ERC-1155), and Web3.js/ Ethers.js.

• Understanding of blockchain security best practices and cryptographic principles.

• Experience working with RESTful APIs, GraphQL, and microservices architecture.

• Strong problem-solving skills and ability to work in a fast-paced startup environment.

• Excellent communication skills and ability to collaborate effectively with cross-functional teams.

• 4+ years of development experience and at least 1 year of smart contract developer experience in solidity
• Solid experience in delivering resilient and secure code in Solidity
• 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

Responsibilities:

·      Search, design, develop, and test blockchain technologies.

·      Brainstorm and help evaluate applications for new tools and

technologies as they continually evolve.

·      Maintain and extend current client- and server-side applications

responsible for integration and business logic

·      Be involved in the global blockchain community—work on

implementing and integrating the latest improvement proposals.

·  Document new solutions as well as maintain that of existing ones. 

Requirements:

·      Total 3 Years of experience required,Ethereum, Blockchain

·      Knowledge in any one of the programming languages: NodeJS,

Java, GoLang,C, C++,PHP

·      Basic understanding of blockchain technology: Bitcoin, Smart

Contracts, Solidity, Cryptography

·Knowledge in private blockchains such as Hyper Ledger, Corda is

a plus

· Basic understanding of HTML, CSS, JS, Bootstrap and knowledge

in front-end technologies such as Angular/ React/ Vue is a plus.

·      Knowledge in databases and database modelling: MySQL,

PostgreSQL, MongoDB

·      Understanding of Software Development Lifecycle (SDLC)

·      Experience using Git for version control

We are looking for a Blockchain Developer who has around 2-3 years of experience, and has past experience with working on blockchain-based systems and scenarios. The ideal candidate would be someone who understands the concepts of Blockchain technology and having working experience on Rust and Solana.

• Desire to work in a startup environment, fun@work culture and able to self-manage.

• In Depth understanding of at-least two blockchain network like Rust, Substrate, Polkadot Solana, Hedera Hashgraph, Tezos, BlockApps, Algorand, Corda, Lambda, Cargo etc

• Familiarity with basic cryptography to understand the essentials of blockchain systems.

• Hands on in Rust

• Designing and writing well-structured APIs in Node.js and MongoDb to connect to Blockchain infrastructure

• Staying up to date with new developments and news in integrated chains.

• Past experience with Wallets or Crypto Exchanges would be a major plus.

• Experience with third-party libraries and APIs.

• Experience working in an agile development process.

• Documenting architecture and guidelines.

• Be proficient in using version control and continuous integration, with tools such as Gitlab, Git and Jenkins.

• Write clear, maintainable and testable code that you are proud of.

• Attend training and education where necessary to up-skill themselves.

• Experience in writing smart contracts for large-scale production blockchain applications.

• Cross-team contribution whenever required.

• Familiarity with basic cryptography.

• Should have a deep understanding of the blockchain and cryptocurrency space and smart contract systems, specifically having a deep understanding of Rust.

• Working with various departments to coordinate and develop digital CRM solutions including bespoke in-house software
• Writing clean, manageable code and maintaining proper documentation
• Writing smart contract integration in JS using web3 like libraries

What you need to have:

• Minimum 2 years of hands-on experience with Solidity and Ethereum like Blockchains
• Experience in deploying smart contracts
• Experience in MEAN stack
• Understanding of blockchain concepts
• Experience with distributed storage is plus
• Ability to work within the team and independently
• Strong organizational, time management and analytical skills