lead blockchain developer

Job Title : Python Developer - Web3 (Mandatory) & Trading Bot Creation (Optional)

Experience : 2+ Years

Location : Noida (On-site)

Working Days : 6 Days WFO (Monday to Friday - WFO & Saturday - WFH)

Job Type : Full-time

Mandatory Skills : Python, Web3 (web3.py/ethers), smart contract interaction, real-time APIs/WebSockets, Git/Docker, security handling.

Responsibilities :

• Build and optimize Web3-based applications & integrations using Python.
• Interact with smart contracts and manage on-chain/off-chain data flows.
• Ensure secure key management, scalability, and performance.
• (Optional) Develop and enhance automated trading bots & strategies.

Required Skills :

• Strong experience in Python development.
• Proficiency in Web3 (web3.py/ethers) and smart contract interaction.
• Hands-on with real-time APIs, WebSockets, Git/Docker.
• Knowledge of security handling & key management.
• (Optional) Trading bot development, CEX/DEX APIs, backtesting (pandas/numpy).

Job Title : Full Stack TypeScript Developer (Web3)

Location : Remote

Experience Level : 3+ Years

Role Overview :

Join our innovative, funded Web3 startup as a Full Stack TypeScript Developer and play a key role in building a wallet-to-wallet audio calling platform. You’ll collaborate with cross-functional teams to deliver a seamless user experience by integrating real-time communication, blockchain payments, and advanced analytics into our platform.

Key Responsibilities:

Development & Blockchain Integration :

• Design and develop a responsive React + TypeScript frontend using Vite.
• Build a scalable TypeScript, Express.js backend to manage wallets and on-chain transactions.
• Integrate wallet connection frameworks like RainbowKit and Wagmi.
• Implement blockchain payment systems using Superfluid Finance and on-chain revenue sharing with 0xSplits.

Real-Time Communication :

• Develop and optimize real-time audio streaming for calls and Spaces using Jitsi or 100ms.
• Ensure low-latency performance, scalability, and smooth user interactions for high-concurrency scenarios.

Data Management & Analytics :

• Manage relational data with Drizzle ORM and Neon Postgres.
• Develop analytics features using The Graph or custom indexers to query blockchain data effectively.

Collaboration & Documentation :

• Collaborate closely with product, design, and blockchain teams to align on technical solutions and goals.
• Document APIs, workflows, and architectural decisions to ensure clarity and smooth handoffs.

Required Skills:

• Strong proficiency in React, TypeScript, and Express.js.
• Hands-on experience with blockchain tools such as ethers.js, Superfluid, 0xSplits, and The Graph.
• Familiarity with real-time audio communication systems like Jitsi or 100ms.
• Expertise in relational databases like Postgres and scalable storage solutions.
• Excellent debugging, optimization, and problem-solving skills.

Preferred Qualifications:

• Prior experience in Web3 or blockchain-based applications.
• Knowledge of decentralized systems and protocols.
• Understanding of agile development processes and CI/CD pipelines.
• Strong attention to detail with the ability to write clean, maintainable code.

What We Offer:

• A chance to work at the forefront of Web3 innovation.
• Fully remote, flexible work environment.
• Competitive salary and equity options.
• Opportunity to make a significant impact in a growing startup.

CoinCROWD

Full Stack Engineer,

Full time- remote

In a rapidly evolving technological landscape, cryptocurrencies are transforming the global financial system. At CoinCrowd, we’re not just keeping pace—we’re at the forefront! Our cutting-edge platform is redefining the digital economy by offering advanced payment solutions, optimizing wallet portfolio management, and enhancing security measures.

Your Role:

As a Full stack Developer, you will be central to our mission. This is a full-time, remote position.

What You’ll Do:

● Strategic Vision: Develop and implement the technical vision, strategy, and roadmap for CoinCrowd's cryptocurrency platform.

● Platform Excellence: Lead the design, development, and maintenance of our platform, ensuring it is secure, performant, and scalable.

● Collaborate: Work with product managers and stakeholders to define and prioritize engineering projects.

● Stay Cutting-Edge: Keep up with industry trends and emerging technologies to ensure our platform remains at the forefront.

● Best Practices: Promote and implement best practices, coding standards, and efficient development processes.

● Resource Management: Oversee budgets, resources, and timelines for engineering projects.

● Focus on Security: Ensure strong security, compliance, and data protection practices.

About You:

● Experience: 5+ years in technology.

● Technical Skills: Proficient in node.js or Python, React, Flutter, PostgreSQL, Elastic, and GCP.

● Industry Knowledge: Experience in fintech or crypto, with a strong understanding of blockchain and cryptocurrency.

● Problem Solver: Excellent technical and problem-solving abilities.

● Agile Expert: Skilled in agile development methodologies. Your Superpowers:

● Blockchain Expert: Strong knowledge of blockchain platforms, wallets, and distributed ledger technologies.

● Framework Proficiency: Experience with Ethereum, Hyperledger, or Corda.

● Security Knowledge: In-depth understanding of cryptographic principles and secure coding practices.

● Excellent Communicator: Ability to work effectively with stakeholders at all levels.

● Integration Skills: Experience integrating blockchain solutions with external systems and APIs.

● Educational Background: Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.

What's in It for You:

This role offers equity-only compensation, giving you a stake in CoinCrowd's success. It’s a unique opportunity to be part of something significant and see your efforts directly impact our growth!

Join us at CoinCrowd and be part of the crypto revolution!

Astra Technologies Inc is a US-based startup with a wholly-owned subsidiary in Chennai, India. We are building cryptocurrency trading infrastructure for financial institutions and other businesses. We are seeking candidates with the following skills:

1.   Strong software engineering skills

2.   Proficiency in the Rust programming language

3.   Familiarity with blockchain technology

4.   Excellent communication skills.

We are seeking candidates with varying levels of experience, from developers to senior developers and architects. The company will provide a joining bonus for candidates who join within two weeks of receiving it.

The selected candidates will have the following job responsibilities:

• Build unified API for crypto trading
• Develop products, applications and systems that meet client requirements and are scalable, maintainable, and robust.
• Work with other members of the development team to identify and resolve technical issues.
• Participate in design and code reviews to ensure that best practices are followed.
• Collaborate with other departments, such as marketing and quality assurance, to ensure that our products meet the needs of our customers.
• Stay up-to-date with emerging technologies and industry trends to ensure that our products remain competitive in the marketplace.

Job Title : Senior MERN Stack Developer with Blockchain Expertise

Location : Indore, MP

Experience : 5-7 years

Job Type : Full-time, On-site

We're seeking a seasoned Senior MERN Stack Developer with a strong focus on blockchain technology to join our innovative team in Indore. As a Senior MERN Stack Developer, you'll play a pivotal role in crafting and implementing cutting-edge blockchain solutions using the MERN stack. Your expertise will contribute to the development of secure, scalable, and decentralized applications. If you're passionate about blockchain technology, possess extensive MERN stack experience, and thrive in a collaborative environment, we encourage you to apply and be a key player in our transformative projects.

Requirements :

• Proven experience as a Full Stack Developer with a specialization in blockchain technology.
• Proficiency in the MERN stack (MongoDB, Express.js, React, Node.js).
• Experience with major blockchain platforms such as Ethereum, Hyperledger, or similar.
• Solid understanding of smart contract development and implementation.
• Knowledge of decentralized application (dApp) development.
• Familiarity with cryptography and principles of blockchain security.
• Strong problem-solving and analytical skills.
• Excellent collaboration and communication skills.

Skills :

• MongoDB, Express, Node.js, React.js
• Next.js (knowledge preferred but not mandatory)
• WordPress/Shopify experience (preferred)
• Real-time communication using Socket.IO or WebRTC (preferred)
• GraphQL API development
• Experience with integrating payment gateways

If you're ready to take on exciting challenges and contribute to groundbreaking projects, apply now and join us in shaping the future of blockchain technology.

Who We Are Looking For:

We are looking for a driven Blockchain & Solidity Developer who learns fast, who is humble and values teamwork. The ideal candidate will be technical, data-driven, creative, and efficient. The kind of person who joins our Team is passionate and willing to think outside of the box and execute on it. We are committed to helping you grow, challenging you with hard, meaningful work and celebrating our successes and failures together.

Preferred Experience:

• 3+ years of software experience ( Full stack) , 1+ years of Solidity development experience
• Presently leading as CTO, Tech Lead or Technical Project manager at established crypto project

Technical Skills

• Experience in development of solidity smart contracts and operating mechanism of blockchain encryption algorithms, consensus mechanism, security protocols etc.
• Proven work experience of deployments on ETH/BSC/MATIC networks and other EVM Chains
• Understanding of virtual machine architecture, memory, and stack.
• Familiar with Truffle, Waffle, and Hardhat, and the pros and cons of each framework.
• Familiarity with code versioning tools (git) and repo management.
• (Plus) Understanding of mainstream DeFi ecosystems like Uniswap, Compound, Curve etc.

Soft Skills

• Proficiency in English & Communication
• Team Collaboration and task management

What You Will Be Doing:

• Collaborates with the team on conceptualizing and developing new applications. Write high-quality, pragmatic code as part of a multidisciplinary agile team.
• Participate in design, development and code reviews.
• Take accountability for end-to-end production, testing, and shipping of code.

Our Offering:

• Purpose: You’ll be part of something bigger, working towards building a decentralized financial ecosystem.
• Culture: You’ll work in a thriving, friendly, and fun environment that promotes open discussions, jokes, learning, video games, and lots of fun.
• People: You’ll work with some of the most driven and intelligent people in the crypto space, engaging with a network of diverse talent team members & advisors.
• Flexible vacation policy: work with your manager to take time off when you need it

At Cypherock, We are disrupting the current financial system by increasing the adoption of Blockchain-based digital assets through better key management solutions. We build "Worlds' first products" from India, work at the intersection of Blockchain, Security, Embedded Hardware and Cryptography, and have worked with companies like Google, Blockgeeks, Samsung, Lockheed Martin, Apollo Munich, Bank of America amongst others.

As the primary person responsible for everything Blockchain in the company, we think it will be a great fit if -

1. You love everything Crypto and are passionate to create the World's safest Crypto wallet.
2. You have MERN stack & DevOps experience on AWS.
3. You have reasonable open-source development experience and have shipped production-ready code.
4. You can commit for at least 6 months and you are ideally in your 4th year of college and willing to join full time after the internship if mutually agreed.

If we decide to work together, we believe you would be a key team member who helps in the mass adoption of Crypto for the first billion users.