Senior Back-End Engineer, Institutional OTC

As a Senior Back-End Engineer at Blockchain.com, your primary responsibilities include building low latency trading services, maintaining and enhancing the Order Management Systems (OMS), and collaborating with a fast-paced engineering team focused on high-performance architecture in cryptocurrency exchanges. Additionally, you'll be involved in ensuring security protocols are in place and optimizing the performance of our systems.

To excel as a Senior Back-End Engineer at Blockchain.com, you need extensive experience in programming languages such as C++ and Rust, along with expertise in Python and SQL. Familiarity with trading systems architecture, particularly in high-frequency trading, is crucial, as is a solid understanding of algorithms, multithreading, and network programming.

Candidates for the Senior Back-End Engineer role at Blockchain.com should be well-versed in Rust and C++, with additional familiarity in Python and SQL. Knowledge in performance benchmarking, testing strategies, and the architecture of trading systems, especially Order Management Systems (OMS) and market data processing, will significantly enhance your candidacy.

At Blockchain.com, the work culture is vibrant and dynamic. As a Senior Back-End Engineer, you'll experience a hybrid model of working that combines in-office collaboration with remote work flexibility. The organization encourages continuous learning and offers unlimited vacation, creating an environment that balances hard work with the well-being of its team members.

Blockchain.com prioritizes the professional development of its Senior Back-End Engineers by providing budgets for learning opportunities and growth initiatives. They encourage ongoing education and skill enhancement to help engineers stay at the forefront of the technology landscape within the blockchain and financial services sectors.

In answering this question, focus on specific projects where you designed or improved systems with low latency requirements. Provide examples of techniques you employed, such as asynchronous processing or optimized data structures, and the impact your contributions had on system performance.

When responding, discuss the best practices you follow for benchmarking performance, such as identifying key metrics, using profiling tools, and analyzing results. Mention specific instances where you successfully tuned a system, detailing the methods and outcomes achieved to optimize performance.

For this question, highlight the security practices you adopt in the software development lifecycle, such as employing encryption, conducting thorough code reviews, and regular testing for vulnerabilities. Provide examples from previous roles where your security enhancements made a measurable difference.

Discuss your understanding of multi-threading, including challenges faced and methods utilized in past projects. Emphasize your ability to manage shared resources and avoid deadlocks, with specific examples showcasing successful implementations.

When answering this question, detail the various components of an OMS, including order execution speed, system reliability, and user experience. Mention how you would ensure performance tuning and responsiveness while handling high throughput transactions.

Explain your philosophy around testing, including the types of testing you integrate into your development process—unit tests, integration tests, and load testing. Provide examples of how involving quality assurance early helped ensure project success in your previous roles.

Illustrate how you effectively communicate and collaborate with various technical and non-technical teams. Share specific instances where this collaboration led to the successful delivery of projects, emphasizing teamwork and synergy.

Discuss your familiarity with different database types, both SQL and NoSQL, and how you decide on which to use based on project requirements. Provide examples of how you've optimized queries and managed data integrity in previous projects.

For this question, share your commitment to personal and professional growth. Mention resources like conferences, online courses, or communities you engage with to keep up-to-date, emphasizing how staying current benefits your contributions as a Senior Back-End Engineer.

Express your genuine interest in the cryptocurrency sector and blockchain technology. Share personal insights or experiences that have shaped this passion and discuss your excitement about contributing to Blockchain.com's vision for an accessible financial future.