
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:

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- Must be well versed with software design and development methodologies for web application development using Java/Java EE/Open Source or Microsoft .NET technologies.
- Mandatory experience in implementing Blockchain applications/projects using MEAN/MERN/Java/Go technology stack, Git, Linux/ Ubuntu/ MacOs/ Windows/ Virtual machines.
- Understanding of smart contracts and experience in developing smart contracts (Node/ JavaScript/ Go/ Java) for at least 2 live projects.
- Knowledge of design considerations, best practices, and standards for designing smart contract-based solutions for decentralized applications.
- Understanding of common tools/ frameworks/ libraries used for quality software development and Blockchain implementation, including those for Hyperledger.
- Knowledge of common architecture patterns for applications (MVC, SPA), cloud, data storage, security, API/Integration, serverless architectures, etc.
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- Experience in leading small development teams (3-5 people) and should have worked in Agile/Scrum teams.
- Strong verbal and written communication skills; must be comfortable with client and stakeholder interactions.
- Good understanding of IPFS and IPNS protocols.
- Interest to learn and apply learning to design and implement blockchain solutions
- Record of publication of good quality blogs and papers.
- Completion of relevant certifications: Blockchain developer, Java EE / Web Application Developer, Cloud Certification, etc.
About us:
Zemoso Technologies is a Software Product Market Fit Studio that brings silicon valley style rapid prototyping and rapid application builds to Entrepreneurs and Corporate innovation. We offer Innovation as a service and work on ideas from scratch and take it to the Product Market Fit stage using Design Thinking->Lean Execution->Agile Methodology.
We were featured as one of Deloitte Fastest 50 growing tech companies from India thrice (2016, 2018 and 2019). We were also featured in Deloitte Technology Fast 500 Asia Pacific both in 2016 and 2018.
We are located in Hyderabad, India, and Dallas, US. We have recently incorporated another office in Waterloo, Canada.
Our founders have had past successes - founded a decision management company acquired by SAP AG (now part of Hana Big data stack & NetWeaver BPM), early engineering team of Zoho (leading billion $ SaaS player) & some Private Equity experience.
Marquee customers along with some exciting start-ups are part of our clientele.
Responsibilities:
- Develop application functionality using various coding languages.
- Setting security measures against various types of cybercrimes.
- Maintain client and server-side applications.
- Train the fellow team members on blockchain technology.
- Attend meetings, brainstorm sessions, and daily standup for enhancing your knowledge of new technologies.
- Adhering to all the rules and regulations of data protection for digital payments.
- Staying updated with the latest crypto technologies for data protection.
Required Skills:
- 6+ years of exp in Designing, developing, and testing blockchain systems.
- Ability to write efficient and modular code.
- Good exp in preparing documentation on the blockchain development processes.
- Securing the blockchain network with new technologies.
- Utilize cryptography techniques to protect against hackers and other cyber attacks.
Rejolut is among the fastest-growing and award winning Tech companies working on leading technologies namely Blockchain, Machine Learning & Artificial Intelligence, Complex mobile & Web Apps, IoT, etc.Rejolut is a venture-backed company with clients in over several countries namely Malaysia Airlines,gba global,my-earth,biomes, Dlg-hub,etc.
We are looking for Tech geeks having hands-on experience and in love with building scalable, distributed and large web/mobile products and tech solutions. He/She must be an excellent problem solver with passion to self-learn and implement web technologies (frontend + backend). He/She would be responsible for the architecture design, code review, and technology build and deployment activities of the product.
website: https://rejolut.com/" target="_blank">https://rejolut.com/
Job Description
1. Good knowledge of Rust & Solidity
2. Should have a deep understanding & knowledge of blockchain architecture & use cases.
3. Experience in writing smart contracts for large-scale production blockchain applications.
4. Should have good analytical & problem-solving skills.
5. Should have ability to design database and back-end development to communicate with blockchain.
6. Candidates with research aptitude will be preferred.
7. Experience in cryptocurrencies would be preferred
8. Must have a minimum 2+ years of experience.
Benefits :
> Health Insurance
> Work from Home
> Fast growth and more visibility into the company
> Experience to work on the latest technology
> Competitive Learning Environment with supportive co-workers
> Employee friendly HR Policies
> Paid leaves up to certain limits
> Competitive salaries & Bonuses
> Liberal working atmosphere
> Get mentored by the best in the industry
Work Schedule:
Day Shift/Flexible working hours
Monday to Friday
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.
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Desire to work in a startup environment, fun@work culture and able to self-manage.
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In Depth understanding of at-least two blockchain network like Rust, Substrate, Polkadot Solana, Hedera Hashgraph, Tezos, BlockApps, Algorand, Corda, Lambda, Cargo etc
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Familiarity with basic cryptography to understand the essentials of blockchain systems.
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Hands on in Rust
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Designing and writing well-structured APIs in Node.js and MongoDb to connect to Blockchain infrastructure
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Staying up to date with new developments and news in integrated chains.
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Past experience with Wallets or Crypto Exchanges would be a major plus.
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Experience with third-party libraries and APIs.
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Experience working in an agile development process.
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Documenting architecture and guidelines.
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Be proficient in using version control and continuous integration, with tools such as Gitlab, Git and Jenkins.
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Write clear, maintainable and testable code that you are proud of.
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Attend training and education where necessary to up-skill themselves.
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Experience in writing smart contracts for large-scale production blockchain applications.
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Cross-team contribution whenever required.
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Familiarity with basic cryptography.
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Should have a deep understanding of the blockchain and cryptocurrency space and smart contract systems, specifically having a deep understanding of Rust.
-understanding with Javascript and Node.js + TypeScript , Express JS
-Familiar with JS tools
-Experience writing code from scratch
-Thrive in a fast-paced working environment, owning deadlines and striving for efficiency
-Familiarity with GIT, Jira, Redmine, or similar project management and issue tracking software
-Working knowledge of design principles, typography, user interfaces, Web standards and usability
-Familiar with interaction design and information architecture methods and principles
**~Job requirements~**
- good in data structure and algorithm
- willing to learn solidity web3 and blockchain technologies
- Handson with Node js and express.js
- working in a young, ambitious, and international team
- good to have experience building an API from scratch
- Are interested in security and its best practices
Our client uses protected methodologies to invert valuation of novel cryptographic assets during private DLT secured, varied contractual based, real-world exchange. It offers access to over 30 unique digital tools and solutions. With both Business-to-Business (B2B), and Direct-To-Consumer (DTC) models active, the company is a Blockchain, Software, Platform and Security as-a-service solution (B/S/P/SaaS).
The company has clients from all over the world and is boosting the independent economy by empowering members with private digital ownership of IP. Headquartered in the UK, the company has its offices in Hong Kong, USA, Thailand and India.
What you will do:
- 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
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
- Build and deploy architecture for complex blockchain solutions.
- 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
- Build cross-chain bridges.
- Building on-chain governance
Skills
- Strong software development background.
- Experience in Solidity.
- Worked with Defi offerings such as staking, farming, flash loans, etc.
- Experience with building on Ethereum & Matic.
- Strong knowledge of concurrency and writing efficient and safe multithreaded code
- Strong knowledge of common algorithms and data structures
- Familiarity with basic cryptography
- Familiarity with P2P networks
- Strong knowledge of bitcoin-like blockchains
Scope
- building an ERC-20 token with an in-built unlock schedule.
- building a smart contract to accept a certain ERC-20 token and take actions based on it
- farming/staking system
- collateral-based lending
- cross chain development
- on-chain governance
- Deploying NFTs
Benefits/Perks
- Remote first company
- Quarterly appraisal and bonus
- Health insurance Benefits of INR 5,00,000
- Employee professional development - Each employee has 5% of their monthly remuneration, annually to spend on educational activities or material
- Flexible working hour
And much more...









