Senior Software Engineer, Payments

As a Senior Software Engineer, Payments at Blockchain.com, you will play a pivotal role in developing and integrating APIs to connect payment providers and enhance user experiences. You’ll collaborate closely with teams like FinOps to tackle customer challenges while pushing for technical excellence and best practices in your work. This position also expects you to optimize systems for performance and security, making significant contributions to our financial and crypto-native products.

To apply for the Senior Software Engineer, Payments position at Blockchain.com, you should have at least 7 years of experience in building production-ready distributed backend systems. Proficiency in JVM-based languages, particularly Kotlin, Scala, or Java is essential. Additionally, a strong understanding of microservices architecture and a focus on customer experience are crucial elements for applicants. Familiarity with technologies such as Kafka, PostgreSQL, and Redis will also be advantageous.

In the Senior Software Engineer, Payments role at Blockchain.com, you will work with a variety of modern technologies designed for scalability and performance. Our tech stack includes Kotlin for programming, PostgreSQL for database management, and tools like Kafka for event streaming. Additionally, you will use Datadog for monitoring, Amplitude and Grafana for analytics, and Apache Spark for processing big data, among others.

Blockchain.com offers substantial growth opportunities for Senior Software Engineers in the Payments team. You will lead significant projects, influence technical decisions, and mentor junior engineers. Additionally, your role in advocating best practices will not only shape the team's direction but also facilitate your own professional development within a rapidly expanding company in the exciting fintech sector.

Blockchain.com strongly believes in work-life balance for all its employees, including Senior Software Engineers. This is reflected in their unlimited vacation policy, which encourages staff to take time off as needed. The company's 'Work from Anywhere' policy adds another layer of flexibility, enabling you to harmonize your professional responsibilities with personal well-being.

When explaining your experience with distributed backend systems, focus on specific projects that highlight your technical leadership and problem-solving skills. Share details about the architectures you’ve built, the tools and technologies used, and how those systems performed. Discuss the challenges you faced and how you overcame them, which will showcase your depth of experience relevant to the Senior Software Engineer role.

To ensure code quality, highlight your commitment to best practices, including writing unit and integration tests to maintain high test coverage. Discuss how you employ code reviews, automated tests, and continuous integration to identify issues early. Sharing specific methodologies you follow, like TDD or pair programming, can show your understanding of quality assurance in software development.

When discussing a technical challenge, be candid about the situation, your thought process, and the steps you took to find a solution. It's helpful to use the STAR method (Situation, Task, Action, Result) to structure your response. Your answer should demonstrate your analytical skills, creativity in problem-solving, and how you effectively collaborated with others in your past roles.

Be prepared to discuss your proficiency in programming languages relevant to the Senior Software Engineer position, such as Kotlin or Java. Provide specific examples of how you applied these languages to solve problems or build features in your past projects. Mention any frameworks or best practices you’ve used, which will underline your capabilities and readiness for the role at Blockchain.com.

Addressing security in software development is crucial, especially in the fintech space. Discuss the importance of employing best practices, such as secure coding standards, regular audits, and using encryption. Mention any specific security frameworks or tools you have experience with, and be prepared to share an example of how you addressed security in one of your projects.

When answering this question, focus on a specific instance where your backend development efforts positively impacted customer experience. Discuss how you identified pain points, implemented features or optimizations, and measured customer feedback. This showcases your understanding of the customer perspective and commitment to enhancing their experience through technology.

Collaboration with cross-functional teams is essential for a Senior Software Engineer. Share how you communicate effectively with product managers, designers, and other developers to align on goals. Provide examples of successful projects where you facilitated discussions, shared insights, and integrated diverse inputs, illustrating your ability to work well in a team-oriented environment.

Express your enthusiasm for the crypto industry by discussing its transformational capacity and your passion for innovative technologies. Share any projects or personal experiences that fostered your interest in blockchain, and elaborate on how you see your skills contributing to this evolving field. Your genuine interest will resonate with the interviewers at Blockchain.com.

Staying abreast of technology trends is crucial in a fast-paced environment. Describe your methods, such as following industry blogs, participating in tech forums, attending conferences, or engaging in online courses. Mention specific resources you utilize to keep informed about advancements, particularly those relevant to software engineering and fintech, showcasing your desire for continuous learning.

When discussing your career goals, align them with the opportunities at Blockchain.com. Talk about your aspiration to take on more leadership roles, mentor junior engineers, or explore new technologies in fintech. Show your readiness to contribute to the team's growth while advancing your own career within a dynamic industry, illustrating your long-term commitment to your professional path.