
Context for the Candidates:
Blockchain engineers are tasked with building secure, scalable, and high-performance decentralized applications. This discussion focuses on how to utilize key technologies—Node.js, Rust, Go, TypeScript, Ethers.js, viem, and Hardhat—in smart contract and blockchain system development, while addressing the practical challenges that arise in such projects.
Key Discussion Points:
• How do you integrate Node.js, Rust, Go, and TypeScript in blockchain-backed applications?
• Discuss the trade-offs between using Rust or Go for performance-critical blockchain services.
• What are the key challenges in ensuring the security and scalability of smart contracts using tools like Ethers.js, viem, and Hardhat?
• How do you approach testing, debugging, and deploying smart contracts in a decentralized environment?
• Share best practices for gas optimization, contract upgradability, and backend scalability.
Evaluation Criteria:
1. Technical Knowledge:
• Strong knowledge of Node.js, Rust, Go, and TypeScript with practical experience in blockchain development.
• Proficiency in Ethers.js, viem, Hardhat, and smart contract lifecycle (development, testing, deployment).
• Understanding of security best practices, performance optimizations, and scalability in decentralized systems.
2. Problem-Solving and Integration Skills:
• How candidates approach integrating smart contract solutions with backend services using Node.js, Rust, Go, and TypeScript.
• Solutions proposed for common challenges in blockchain projects such as gas fees, security vulnerabilities, and system bottlenecks.
3. Experience and Expertise:
• Minimum of 2 years of IT experience, including hands-on development with the specified technologies.
• Practical knowledge of blockchain architecture, consensus mechanisms, and decentralized application deployment.
4. Innovation and Critical Thinking:
• Candidates’ ability to think creatively about system architecture, proposing scalable and secure solutions for blockchain-based applications.
• Discussion on the future potential of blockchain technology and how the tech stack can evolve.
5. Communication and Team Collaboration:
• Clear articulation of technical challenges and how to address them in a team setting.
• Ability to lead or contribute to discussions in a way that encourages collaboration and team-driven problem-solving.

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Location: Bengaluru
Experience Required: 2+ Year
Employment Type: Full-time
About the Role
We are looking for a passionate and motivated ** Software Engineer** with hands-on experience in the Software development (MongoDB, Express.js, React.js, Node.js,sql)**. The ideal candidate should have strong coding skills, a good grasp of modern web development practices, and excellent communication and work ethics.
Key Responsibilities
- Develop and maintain scalable web applications using the (javascript,MongoDB, Express.js, React.js, Node.js,sql)
- Collaborate with cross-functional teams to define, design, and ship new features
- Write clean, efficient, and well-documented code
- Debug and resolve technical issues across the stack
- Participate in code reviews and contribute to team knowledge sharing
- Stay up to date with industry trends and emerging technologies
Required Skills & Qualifications
- 2+ year of professional experience as a Software Developer
- Proficiency in JavaScript, ES6+, and TypeScript (optional but a plus)
- Solid understanding of MongoDB, Express.js, React.js, and Node.js
- Experience with RESTful APIs and third-party integrations
- Familiarity with version control systems like Git
- Strong problem-solving and debugging skills
- Good communication skills and a team-player mindset
- Strong sense of ownership and work ethics
Preferred Skills
- Experience with cloud platforms like AWS, GCP, or Azure
- Familiarity with CI/CD pipelines and DevOps practices
- Exposure to testing frameworks like Jest, Mocha, or Cypress
-Prior experience working in a fintech company is a strong advantage.
How to Apply ?
Fill in the form below or
You can directly walk-in to our office in Bangalore
Date: 29-03-2025
Time: 10 Am to 12 Pm
Form link: https://forms.gle/PMJMUvz48pTPZeUu5
Location: Paywize Technologies Pvt. Ltd.
M.R Complex, 7th Cross, 6th Main Rd, BTM 2nd Stage, Bengaluru, Karnataka 560076
Join us and be part of the fintech revolution!
As a Node.js Developer, you will be responsible for:
Designing, developing, and maintaining server-side applications and systems using Node.js, a JavaScript runtime environment. Your expertise in backend development, JavaScript, TypeScript, and REST APIs will play an essential role in creating efficient and powerful server-side applications.
Responsibilities:
● Design and implement efficient, secure, and maintainable server-side code using Node.js.
● Collaborate with the front-end development team to integrate user-facing elements with server-side logic.
● Develop APIs for seamless data flow between the front-end and back-end.
● Optimize application performance and ensure high availability and scalability.
To succeed in this role – you should have the following:
● Minimum of 3-4 years of experience as a backend developer.
● Must have proven experience as a Back-End Developer, with a focus on Node.js.
● Proficiency in JavaScript, TypeScript, and related frameworks (Express.js, Hapi.js, etc.).
● Experience with RESTful API design principles.
● Experience with agile development methodologies.
● Familiarity with working with at least one of PostgreSQL or MongoDB.
● Familiarity with version control systems (Git)
● Strong communication skills and ability to work collaboratively in a team.
● Strong problem-solving skills and attention to detail.
Added bonus:
● Familiarity with frontend development technologies like HTML and CSS.
● Experience working with Docker, Github Actions, and other common CI/CD pipelines
● Knowledge about AWS components (S3, EC2, Cloudfront, Redis Clusters, etc.)
Education:
Bachelor's degree in Computer Science, Information Technology, or a related field
- Key Skills:
- Expert Proficiency in anyone the below programming language - Node JS, PHP or GoLang
- Expert Computer Science fundamentals like Data Structures, Algorithms, Time Complexity, and others
- Strong Microservices, REST API, Git source control, CI/CD, and other latest technology trends
- Strong System Design, DB Design proficiency
- Strong knowledge in Design Patterns, best software development practices
- Good exposure to working in Open Source stack, E-Commerce, or Fintech domain.
Job Description
Title - Lead Snowflake Developer
Location - Chennai/Hyderabad/Bangalore
Role - Fulltime
Notice Period/Availability - Immediate
Years of Experience - 6+
Job Description:
- Overall 6 years of experience in IT/Software development
- Minimum 3 years of experience working with Snowflake.
- Designing, implementing and testing cloud computing solutions using Snowflake technology.
- Creating, monitoring and optimization of ETL/ELT processes.
- Migrating solutions from on-premises to public cloud platforms.
- Experience in SQL language and data warehousing concepts.
- Experience in Cloud technologies: AWS, Azure or GCP.
- Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement.
- Collaborating with the front-end developers and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience.
- Developing ideas for new programs, products, or features by monitoring industry developments and trends.
- Recording data and reporting it to proper parties, such as clients or leadership.
- Participating in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members.
- Taking lead on projects, as needed.
- PHP Developer Exp 6 + Years Openings:
- Candidate should have excellent communication skill.
- Object-oriented programming in PHP.
- Front-end technologies such as JavaScript, HTML, and CSS.
- Complex SQL queries and database schema design.
- MVC frameworks (Laravel, Yii2, Any Framework).
- Working in a collaborative team environment using tools like JIRA and Git.
- Consuming and creating web services.
- Stable work history and an ability to collaborate effectively.
- Demonstrable knowledge of web technologies including HTML, CSS, Javascript, AJAX, MYSQL,JQuery,Bootstrap ,Web services etc..
- Consuming and creating web services.
- Stable work history and an ability to collaborate effectively. ,

1 to 3 years’ experience in .Net + MVC
• Experience in AngularJS, NodeJS or ReactJS will give an edge
• Database technologies -MySQL/PostgreSQL
• API design & development
• CSS frameworks like Bootstrap or similar
• Write reusable, efficient code
• Added Advantage - AWS
Candidate should be able to join within 15-30 days, is willing to work with a startup, has experience of 2-5 years, and are from Pune.






