Backend Engineer/Node.js, AWS, Solana, Ethereum

As a Backend Engineer at our company, you'll be responsible for developing and maintaining RESTful and GraphQL APIs, designing system architecture for scalability, and automating processes. You'll also ensure the stability of production backend systems and integrate with Solana and Ethereum blockchains, all while collaborating with product teams and other engineers.

A Backend Engineer in our company should have a solid grounding in Node.js, experience with AWS services like Lambda and RDS, and familiarity with both relational and NoSQL databases such as PostgreSQL and DynamoDB. Knowledge of Solana blockchain integrations and experience with microservices architecture are also crucial.

To qualify for the Backend Engineer position at our company, candidates should have at least 3 years of backend development experience, strong proficiency in Node.js, and hands-on experience with AWS. Knowledge of testing best practices and experience with Solana integrations are essential, and familiarity with Bitcoin and Ethereum blockchain would be a bonus.

While we didn’t specify a location for the Backend Engineer role, we are open to remote work options. We believe in flexibility and finding the right talent, regardless of location, as long as you can collaborate effectively with our teams.

Our company culture revolves around innovation, collaboration, and agility. As a Backend Engineer, you’ll work in a supportive environment where teamwork is emphasized, and your contributions will be valued. We foster a culture of continuous learning, encouraging you to explore new technologies and share ideas freely.

When asked about designing RESTful APIs, your answer should cover defining resource URIs, implementing appropriate HTTP methods, ensuring stateless interactions, and handling responses correctly. Mention your understanding of CRUD operations and how you ensure API security and versioning.

You should provide a detailed response, discussing how microservices allow for decoupling of services, improved scalability, and easier maintenance. Highlight your experience in building, deploying, and managing microservices, and any specific projects where you've successfully employed this architecture.

Discuss the tools and methodologies you've used for monitoring systems, such as AWS CloudWatch for logs and metrics. Explain how you analyze performance issues, maintain system reliability, and the key performance indicators you focus on.

In your response, highlight that SQL databases are relational, use structured query language, and support ACID properties, while NoSQL databases provide more flexibility, horizontal scaling, and are often better suited for big data applications. Share your experience in using these database types.

Talk about the importance of unit testing in backend development, your preferred frameworks like Jest, and how you ensure coverage for different code paths. Emphasize your strategy for writing effective tests and their contribution to maintaining code quality.

Explain your philosophy on error handling, such as utilizing try-catch blocks, logging errors for monitoring, and designing user-friendly error messages. Stress the importance of graceful degradation in user experience.

Highlight specific AWS services you've utilized, such as Lambda or RDS. Explain how you've leveraged these services to build scalable applications and your strategy for using AWS to optimize costs and performance.

Discuss any specific projects or tasks where you've integrated with Solana or Ethereum. Talk about technical challenges you faced and how you overcame them, as well as the libraries or tools you used, such as Helius or Metaplex Core.

Share your experiences with effective communication tools and practices, such as regular stand-ups and shared documentation. Emphasize the importance of aligning on API designs and ensuring seamless integration between backend and frontend.

Use this as an opportunity to narrate a situation where you faced significant challenges, the steps you took to troubleshoot, and the impact of the solution on the project outcome. Highlight your problem-solving approach and any collaboration with team members.