Senior Backend Developer - NodeJS

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.

Job Description:

We are seeking a talented and experienced Backend Developer with a strong proficiency in Node.js and expertise in database management. As a Backend Developer, you will play a crucial role in the development and maintenance of our software systems, ensuring their high performance and responsiveness.

Responsibilities:

·      Design, develop, and maintain backend services using Node.js.

·      Collaborate with cross-functional teams to define software requirements and specifications.

·      Optimize and scale applications for maximum speed and scalability.

·      Implement security and data protection measures.

·      Troubleshoot and resolve issues in a timely manner.

·      Collaborate with front-end developers to integrate user-facing elements with server-side logic.

·      Stay up-to-date with emerging technologies and best practices in backend development.

Requirements:

·      Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent work experience).

·      Minimum of 2 years of professional experience in Node.js development.

·      Proficiency with databases, preferably MongoDB or DynamoDB.

·      Strong understanding of RESTful API design and development.

·      Experience with version control systems, such as Git.

·      Familiarity with cloud platforms in AWS is a plus.

·      Excellent problem-solving and debugging skills.

·      Strong communication and teamwork skills.

·      Ability to work independently and manage multiple tasks efficiently.

·      Proven track record of delivering high-quality code on schedule.

• Ability to work in an existing codebase and collaborate with a diverse team
• Experience in building enterprise-scale backend REST APIs with frameworks such as Nest.js & Express.js using an API-first paradigm
• Intimate knowledge of crafting highly performant database queries
• Hands-on experience implementing relational database structures, including tables, indexes, views, etc.
• A mindset towards building systems for the cloud and DevOps fundamentals
• Working knowledge of cloud infrastructure services is good to have. If not then willingness to learn should be there.
• Focus towards building security, performance, and scalability into services from the beginning
• Experience with debugging code and troubleshooting technical issues in order to craft appropriate solutions

Company: Runo – https://runo.in

Location: Hyderabad, India

Who We Are:

Runo is a product based funded company incubated at T-Hub (IIITH Campus) and currently operating from Cyber Towers, HiTec City. We offer Call Management CRM for sales teams across the world. We are currently scaling up the engineering team to support the continued growth of the user acquisition in the global market, after a steady success in the Indian market.

The Role:

Runo is looking for a Lead Backend Developer to join our team. The lead backend developer is responsible for scaling up the existing architecture to handle billions of requests every month (We are currently at a scale of 100 million requests per month). You will be contributing in architecting the database/reporting layer to support complex queries and data exports of millions of records. You will be a lead developer responsible for development of new software products and enhancements to existing products.

Our Ideal candidate:

• Proficiency in NodeJS.
• Expert knowledge of NoSQL Databases (MongoDB is preferred)
• Hands on experience of working on products handling more than a million requests per month
• 4-8 years of relevant professional work experience 
• Self-motivated, able to work independently. Commitment to high quality.

Responsibilities:

• Contribute to the product architecture in handling millions of requests per day.
• Optimizing the architecture for regional data zones.
• Develop high performance, reusable & bug free APIs
• Optimize the existing APIs for performance (by data denormalization/ decoupling the long running APIs using queues)
• Get familiar with the AWS Services like API Gateway, Lambdas, SNS, SQS, SES

What We Offer: 

• Competitive Salary
• ESOPs
• Medical Insurance

We want a MEAN stack developer who is definitely not mean but is enthusiastic, quick at grasping, and has experience in handling multiple projects and codebases.

You should be energetic, authoritative, focused, and experimental at work.

We are looking for experienced backend engineers only.

Apply only if you have 8 YES out of the following 10 qualifying criteria :

-Strong grip over HTML, CSS, and Angular 9+

-Good with CSS styling and theming

-Expert at API development using NodeJS

-Experienced with MongoDB DB

-Self-starter with good communication skills

-At least 2+ years of experience

-Must be willing to work from Bangalore (HSR)

-Have than 2 years of experience with multiple frontend projects in MEAN Stack?

-HAVE worked in a B2C Startup for at least a year?

-CAN join in within 30-45 days?

• 6+ years of experience working with MongoDB or other NoSQL databases.
• Maintain and configure MongoDB (developer)
• Keep clear documentation of the database setup and architecture.
• Backup and Disaster Recovery management.
• Adept with all the best practices and design patterns in MongoDB for designing document schemas.
• Good grasp of MongoDB’s aggregation framework.
• Ensure that the databases achieve maximum performance and availability.
• Design indexing strategies.
• Configure, monitor, and deploy replica sets.
• Should have experience with MongoDB Atlas.
• Should have minimum experience with development and performance tuning.
• Create roles and users and set their permissions.
• Excellent written, verbal communication skills and critical thinking skills

Experience: 9 to 16 Yrs

Notice Period: Immediate to 15 days

Job Description:

- The Lead Engineer is responsible for deriving the technical architecture, detailed design, implementation, Performance, and Scalability of the developed system.

- The individual should be capable of single-handedly understanding the requirement, liaison with the product owner and external teams; produce the technical output required.

- Strong Leadership skills to contradict, produce a new design to current trends is required.

- Should be an avid technology enthusiast with strong views on technical architecture.

Technical Skills:

1) Strong Python and Mongo DB is mandatory

2) Web Application Architecture - One Large Project Experience of Development & Maintenance

3) Knowledge in one or more frameworks like WSGI(uwsgi), Django, Flask, Web Application development

4) Exposure to Databases like MongoDB, BigQuery, Elastic Search, Redis, etc.,

5) Knowledge of Code Quality Process and Discipline (Git, Jenkins, etc)

Build reusable APIs for our client-facing apps in Node.js

Create and maintain scalable infrastructure leveraging modern cloud platforms Write tests and documentation as you implement features with your team Maintain expertise in current and emerging technologies and tools

4+ years’ Experience with NodeJS

BS degree or higher in Computer Science or Engineering Experience documenting and testing RESTful APIs

Experience working with databases in PostgreSQL, MongoDB or Redis

Experience and enthusiasm for working collaboratively with others in an Agile environment