Ruby on Rails Developer

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.

• Overall 2+ years’ experience developing web applications
• Experience with
  • C#
  • NET Core
  • Entity Framework
  • At least one of the following two databases
    • Microsoft SQL Server
    • PostgreSQL Server
  • Docker
  • Google Cloud

• Hands on coding, systems analysis, design and delivery of projects assigned.
• Completes assigned projects in a timely manner.
• Keeps management informed of project progress and problems, particularly as to needed changes in schedule, resources, or product.
• Responds to problems in a timely, effective manner.

• Familiar with CI/CD pipeline
• Experience working with something other than the Microsoft stack (Python, Java, Scala, Go etc.)

• Rewrite existing APIs in NodeJS. 
• Remodel the APIs into Micro services-based architecture. 
• Implement a caching layer wherever possible. 
• Optimize the API for high performance and scalability. 
• Write unit tests for API Testing.
• Automate the code testing and deployment process.

Skills Required: 

• At least 2 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds. 
• Excellent hands-on experience using MySQL or any other SQL Database. 
• Good knowledge of MongoDB or any other NoSQL Database. 
• Good knowledge in postgre
• Good knowledge of Redis, its data types, and their use cases. 
• Experience with graph-based databases like GraphQL and Neo4j. 
• Experience developing and deploying REST APIs. 
• Good knowledge of Unit Testing and available Test Frameworks. 
• Good understanding of advanced JS libraries and frameworks. 
• Experience with Web sockets, Service Workers, and Web Push Notifications. 
• Familiar with NodeJS profiling tools. 
• Proficient understanding of code versioning tools such as Git. 
• Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms. 
• Should be a fast learner and a go-getter — without any fear of trying out new things Preferences. 
• Experience building a large scale social or location-based app

Responsibilities:

• Hand on experience in Golang/Python/Ruby on Rails /Node.Js
• Must have at least 1+ years of experience in Team Handling

• Strong proficiency with JavaScript and TypeScript
• Knowledge of Node.js and loopback 4 frameworks
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Basic understanding of front-end technologies, such as React
• User authentication and authorization between multiple systems, servers, and environments
• Integration of multiple data sources and databases into one system
• Understanding fundamental design principles behind a scalable application
• Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform
• Creating database schemas that represent and support business processes
• Implementing automated testing platforms and unit tests
• Proficient understanding of code versioning tools, such as Git

Responsibilities:

• Build scalable, service oriented web applications from scratch for technology products for European market.
• Maintain these applications for accuracy and high availability.
• Continuously identify opportunities to improve system designs, architecture and implementation standards
• Participate with founding, business and product teams in discussions on how to build and launch new modules.
• Collaborate across functions and own the planning, estimation and execution for parts of the product.
• Start as an individual contributor but stay ready to build and mentor a small team of up to 5 engineers over the coming months and years.
• Contribute in hiring highly ambitious engineers as the team grows.
• Being among the first people on the engineering team, be a culture driver.

Requirements:

• Experience of architecting and building products/business critical backend applications using different MVC frameworks.
• Experience with microservices.
• Experience of building and maintaining scalable applications using Node.js/MEAN stack.
• Experience of deploying and maintaining web applications.
• Experience with non relational databases like MongoDB.
• Understanding of relational databases like MySQL.
• Familiarity with REST APIs and stress testing tools.
• Good communication skills.

• Exposure in building polyglot applications.
• Exposure for devops and related processes, preferably GCP.
• Knowledge of components in scalable solutions i. e. database partitions, message brokers, background processing.
• Exposure to basic frontend technologies to speed up collaboration with the frontend team.

Experience: 2.5 to 4 years

Location: Pune

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Qualifications

• 2+ years' of experience in web development using NodeJs technologies.
• B.E., B. Tech., Msc IT, MCA etc in Software engineering/ Information technology.

Responsibilities

• Write reusable, testable, and efficient code following best practices (unit testing, source control, continuous integration, automation, design patterns, etc)
• Debug and refactoring of existing code, troubleshoot problems
• Collaborate with other developers, testers and other leads to enhance to quality product enhancements
• Take full responsibility for the quality of the code and test cases that are developed.
• Integration of user-facing elements developed by front-end developers with server-side logic.
• Provide task estimations and deliver quality code on time.
• Participate in architectural, design, and product sessions.
• Interact with different stakeholders to gather feedback and clarification.
• Research and apply new technologies and best practices.
• Should enjoy the experience of mentoring new hires on technical and process areas.
• Must have hands-on experience in building Microservices based software architecture. Must have Unix /Docker /Kubernetes /NOSQL experience

Requirements

• Knowledge of ReactJS is preferable.
• Extensive knowledge of JavaScript.
• Thorough understanding of databases such as MySQL, MongoDB or similar technologies
• In depth knowledge of working with Git.
• Experience with Restful APIs, Postman etc.
• Understanding of AWS/EC2, or other cloud services.
• Object-oriented application building experience in a professional Agile/Scrum environment. 
• Good to have Unix /Docker/Kubernetes/NOSQL experience.

Skills

• Node.js
• AWS services
• Deployment 
• Unix /Docker/Kubernetes/NOSQL