
Smart Contracts Engineer
at headquartered in NYC.After envisioning a Layer 1 blockchain
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Drive high-level decisions about Sperax Protocol architecture, incentive structures and features in collaboration with the Product and Economics Research team
Roles and Responsibilities
- Design/implement secure and reliable smart contracts in Solidity
- Architect, implement, test, and audit protocol upgrades and additions
- Research on multiple blockchain protocols
- Work in a fast-paced team to develop and iterate on new features
Our Requirements/ Qualification and Skills
- 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
What we offer:

Similar jobs
We are looking for a skilled Blockchain Developer to work on developing decentralized applications and smart contracts.
If you're passionate about blockchain technology and want to work on cutting-edge projects, this is the role for you!.
Key Responsibilities:.
Design and develop smart contracts and decentralized applications (dApps).
Work with Ethereum, Solana, or other blockchain platforms.
Write secure, optimized, and efficient code for blockchain-based applications.
Experience in MLM & Matrix Plan logic.
Collaborate with cross-functional teams to implement blockchain solutions.
Required Qualifications:.
Experience in blockchain development.
Proficiency in Solidity, smart contracts, and blockchain platforms like Ethereum or Hyperledger.
Familiarity with cryptographic principles and consensus algorithms.
Job Description:
We are seeking a skilled and experienced Blockchain Developer to join our dynamic team. As a Blockchain Developer, you will be responsible for designing, implementing, and maintaining blockchain-based applications and solutions. You will collaborate with cross-functional teams to develop innovative blockchain solutions that meet our business requirements. The ideal candidate should have a strong background in blockchain technology, solid programming skills, and a passion for staying updated with the latest trends and developments in the blockchain space.
Responsibilities:
- Design, develop, and implement blockchain solutions based on business requirements.
- Collaborate with cross-functional teams to integrate blockchain technology into existing systems and applications.
- Research and evaluate blockchain frameworks, platforms, and tools to identify the most suitable solutions for our projects.
- Write clean, efficient, and maintainable code for blockchain applications.
- Implement smart contracts and decentralized applications (DApps) using Solidity or other relevant programming languages.
- Ensure the security, scalability, and performance of blockchain solutions.
- Conduct code reviews, testing, and debugging to ensure the quality of deliverables.
- Stay updated with the latest developments, standards, and best practices in blockchain technology.
- Provide technical guidance and support to team members and stakeholders.
- Document technical specifications, architecture, and processes related to blockchain development projects.
Requirements:
- Bachelor's or Master's degree in Computer Science, Engineering, or related field.
- Proven experience as a Blockchain Developer or related role.
- Strong understanding of blockchain technology, cryptocurrencies, and decentralized systems.
- Proficiency in programming languages such as Solidity, JavaScript, Python, or C++.
- Experience with blockchain platforms such as Ethereum, Hyperledger, Corda, or EOS.
- Familiarity with smart contract development and deployment.
- Knowledge of cryptographic principles and security protocols.
- Experience with blockchain development tools, libraries, and frameworks.
- Excellent problem-solving skills and attention to detail.
- Strong communication and teamwork skills.
- Ability to work effectively in a fast-paced environment and manage multiple tasks simultaneously.
- Certification in blockchain development (e.g., Certified Blockchain Developer) is a plus.
Join our team and be part of exciting projects at the forefront of blockchain technology innovation!
We are a Research and Development firm focusing on building DeFi products revolving around Decentralized Liquidity Provision and active LP management.
We are a high-output research team of 5 from a variety of backgrounds, spanning from Machine Learning and System Engineering, all the way to fintech and business.
We are looking for a DeFi Software Engineer who has a deep understanding of Ethereum and tons of curiosity!
What are we Building:
We are building an Ethereum-based Protocol for structured yield and synths. The protocol leverages permissionless-ness and transparency of DeFi to create predictable yield and increase capital efficiency of capital deployed over various products in the DeFi ecosystem.
Our first product focuses on liquidity management on Uniswap V3.
Responsibilities
- Designing, building and testing smart contracts and related infrastructure
- Researching new DeFi protocols and its connectors and building on them
- Building real-time monitoring tools and working with our team on latency-sensitive operations
- Ethereum Node Infrastructure
- R&D at a protocol level
Qualifications
- Deep technical and practical understanding of DeFi protocols and DevOps practices for interfacing with them (both Ethereum and any other relevant one) Must have extensive knowledge of Solidity, smart contract development (web3js or ethersjs), testing and deployed a functioning smart contract on ETH mainnet.
- Knowledge of Javascript (knowledge of Golang/Python programming is nice to have).
- Must be comfortable working with either hardhat or truffle.
- Comfortable working in a dynamic, research-oriented team with several ongoing concurrent projects
- You look forward to working with an interdisciplinary team that longs to find solutions together.
- Knowledge of DeFi isn't a must but is a big plus!
The number of years of experience does not matter as long as you have built complex projects from scratch, a burning desire to learn more, constantly improve yourself and solving tricky problems on a daily basis. We're a small team so you can assure yourself that whatever you contribute - in terms of engineering, or otherwise - is always heard and discussed.
Benefits
- Competitive salary and performance-based bonuses
- A young startup work environment, where your initiatives and ideas count and are rewarded
- A unique open research environment, where everybody contributes and sees the full spectrum of our work, from inception to production
- The chance to shape our firm's legacy and exchange knowledge with the team on every part of what we do.
The role is remote. Please share github profiles and details of previous projects worked on (both commercial and personal).
- Working on various blockchain technologies like DeFi, Ethereum, Web3, etc.
- Being ready to get a deep dive into new technology as per business use-case.
- Demonstrating thought leadership and understanding of various Blockchain platforms and capabilities.
- Designing and building industry-specific solutions using Blockchain technology
- Leading solution development in Blockchain and related technologies such asEthereum, cryptocurrencies, and smart contracts.
- Understanding functional requirements as applicable to various industries and converting them into system specifications for development.
- Defining architecture and best practices to implement the solutions.
Desired Candidate Profile
What you need to have:- Deep understanding of blockchain fundamentals (smart contracts, web3, DAOs)
- 3-5 years experience in web development using MERN stack is mandatory
- Knowledgeable about smart contract security and best practices (design patterns)
- Familiarity with Git and Version Control
- Proficiency in writing modular and well-tested code
- Hands-on experience in the latest DeFi applications and an appreciation of use cases like AMM and decentralized lending and borrowing
- 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.
- Knowledge of GitHub is must
- Handle the solidity
- Should be able to write smart contracts
- Education: Not specific
- Skills: Exp. In working polkadot & binance smart chains will be an advantage.
Rejolut is one of the award winning fastest growing emerging tech company which is working on leading technology like Blockchian, ML & AI, Complex mobile & web apps, IoT etc.
The ideal candidate will be responsible for developing highly scalable and secure code.
Responsibilities:-
-Able to take the Extreme Ownership of modules/product/projects
-Able to learn & implement new technology/framework/library/networks at God Speed
-Able to come with optimal solution for the business problem
-Can handle calls with the client & customer to know their feedback
-Writing clean code & able to dig into other's code or open source code
-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
Desired Candidate Profile:-
- Setting up and configuring Full node clients for various Blockchains.
- In Depth understanding of atleast two blockchain network like Ethereum, Hedera Hashgraph, Tezos, Hyperledger, BlockApps, Algorand, Corda etc
- Working closely with DevOps to make blockchain infrastructure robust and scalable.
- Designing and writing well-structured APIs in Node.js to connect to Blockchain infrastructure.
- Develop and manage various applications to integrate Blockchain infrastructure into the main product.
- Staying up to date with new developments and news in integrated chains, like forks, main net launches, migration.
- Documenting architecture and guidelines.
- Always being on the lookout to enhance technology, by finding and making new tools, utilities, and libraries.
- Managing and enhancing a cutting edge tech stack, comprising of Node.js, ES2016/17 (Javascript), AWS, MongoDB, SQL
- Cross-team contribution whenever required.
- Familiarity with basic cryptography
- Familiarity with P2P networks
Culture
- Fast-paced, intellectually stimulating, steep learning, and growth
- Close-knit, hardworking, supportive colleagues
- Challenging work
- Flat organization with no hierarchy
- If you like problem solving, and love latest technology, there are very few better places
How we are different
-We are young and dynamic team who are obsessed with solving business problem at scale -We are a technology agnostic company who focus more on finding the optimal solution to business problem rather than technology
Why to join us
-We provide huge learning curve. Spending 1.5-2 years with us will put you 3 years ahead in the career
-We work only on cutting edge technology like React, React Native, Flutter, NodeJS, Python, Go, Svelte, ELM
-There are two technology Co-founder in the company who are pretty much hands-on and have earlier bult the Consumer application which is downloaded millions of time and are in leadership position in copanies like Samsung, Purplle, Loylty Rewardz
-Get mentored by the best in the industry
-Flexible working hours
-Perks best in the industry
Responsibilities:
- Quickly test & evaluate the hyperledger Besu vs GoQuorum to arrive at the best platform which fits our use-case
- Focus on core-blockchain infrastructure as viewed through the privacy aspects, scalability & deployment challenges in the real world
- Designing, coding, testing as well as deployment, documentation & support
- Solve interesting technical & business challenges
- Collaborate with our mobile/web team to integrate & promote best practices
We are a Quantitative Trading firm building proprietary trading products and infrastructure for crypto markets (both DeFi and CeFi). We are focusing heavily on building up our DeFi capabilities and are looking for a hungry DeFi native engineer to help us conceptualize and build our DeFi strategies and infrastructure.
We are a high-output research team of 5 from a variety of backgrounds, spanning from Machine Learning and System Engineering, all the way to fintech and business.
We build products for both internal and external use to uncover alpha opportunities in different areas of crypto markets, including trading both on centralized and decentralized exchanges (DeFi) and building systems to streamline order execution, gather and digest complex timeseries data streams.
We are looking for a DeFi Software Engineer who has a deep understanding of blockchain and is curious about algorithmic trading. You should be excited about making sense of large quantities of data, and decision modelling on time series, real-time data.
Responsibilities
- Designing, building and testing smart contracts and related infrastructure
- Researching new DeFi protocols and its connectors and building on them
- Building real-time monitoring tools and working with our team on latency-sensitive operations
- Ethereum Node Infrastructure setup and maintenance
- Work with the team on devising new trading strategies and uncovering opportunities
Qualifications
- Deep technical and practical understanding of DeFi protocols and DevOps practices for interfacing with them (both Ethereum and any other relevant one) - Must have extensive knowledge of Solidity, smart contract development (web3js or ethersjs) and testing.
- Knowledge of Javascript (knowledge of Golang/Python programming is nice to have).
- Must be comfortable working with either hardhat or truffle.
- Comfortable working in a dynamic, research-oriented team with several ongoing concurrent projects
- You look forward to working with an interdisciplinary team that longs to find solutions together.
- Knowledge of trading isn't required but interest in the field is paramount. If you are a self-taught wiz who has tried its hands at DeFi trading and AMM, even better!
The number of years of experience does not matter as long as you have built complex projects from scratch, a burning desire to learn more, constantly improve yourself and solving tricky problems on a daily basis. We're a small team so you can assure yourself that whatever you contribute - in terms of an engineer, or otherwise - is always heard and discussed.
Benefits
- Competitive salary and performance-based bonuses
- A young startup work environment, where your initiatives and ideas count and are rewarded
- A unique open research environment, where everybody contributes and sees the full spectrum of our work, from inception to production
- The chance to shape our firm's legacy and exchange knowledge with the team on every part of what we do.
The role location is preferably Hyderabad with to be able to brainstorm in person with the R&D team, but remote in India is also possible.
Please share github profiles and details of previous projects worked on (both commercial and personal).
2.front end work on React js
3.Backend work on Nodejs for api and scheduler part
4.Database Mysql/Mongodb
5.Should be worked on *Cryptocurrency Exchange* Bitcoin,Ethereum,Tron,etc
6.cryptocurrency core node setup
7.who worked on *mlm plan smart contract on tron network like direct referral income, level income and daily return roi* - advantage for








