Senior Backend Engineer - Replo

As a Senior Backend Engineer at Replo, your responsibilities will include architecting and implementing backend systems using Typescript and Node, designing high-uptime data ingestion pipelines with Kafka and Clickhouse, developing an A/B testing platform on Cloudflare, and enhancing our CI platform stability. You will also have the opportunity to mentor junior engineers, ensuring best practices are followed throughout the development process.

To qualify for the Senior Backend Engineer position at Replo, you should have 4+ years of experience working with production distributed systems and service-oriented architecture. A solid understanding of our tech stack including Typescript, Node, Kafka, Clickhouse, Redis, and Cloudflare is essential. Unfortunately, we do not offer visa sponsorship for this role, so applicants must be eligible to work in the United States.

Replo fosters a collaborative and innovative work environment, particularly for our Senior Backend Engineers. You will be part of a small, dynamic team of just 20 talented individuals, working closely with your peers to create powerful solutions. We value mentorship and growth, offering the chance to guide junior engineers while also encouraging continuous professional development within the fast-paced AI and Ecommerce industries.

At Replo, you will be immersed in a diverse tech stack that includes Typescript, Node, Kafka, Clickhouse, Redis, and Cloudflare. Experience with NextJS and React is also beneficial as you will be deploying multi-tenant applications. This role is perfect for those who enjoy working with cutting-edge technology in a rapidly evolving industry.

The salary range for a Senior Backend Engineer at Replo is competitive, falling between $180k and $250k. This range is based on your experience and expertise, making it an attractive opportunity for skilled professionals eager to contribute to a growing company focused on automating performance marketing.

When addressing your experience with distributed systems, focus on specific projects where you designed or contributed to scalability and fault tolerance. Use metrics to showcase how your solutions improved performance or reliability, and relate these directly to how they align with Replo's mission of high uptime systems.

Discuss your methodologies for monitoring and maintaining system performance. You might mention using logging, metrics, and alerting to track system health. Highlight any specific tools or technologies you have employed, such as Kafka or database management systems like Clickhouse, to ensure that you can meet Replo's high uptime requirements.

Explain your previous roles where you designed data ingestion pipelines, focusing on the technologies you used (like Kafka) and the challenges you faced. Emphasize your strategies for ensuring quality and performance, especially when working towards a goal of 99.99% uptime.

Share examples of your mentoring style, whether you prefer hands-on training, pair programming, or structured learning paths. Highlight the importance of knowledge-sharing in a small team like Replo's and how you create a supportive learning environment.

Discuss any previous experience you have in building A/B testing solutions, including the challenges and decisions you had to make during development. Connect this back to how it would benefit Replo by helping clients optimize their online presence.

Talk about your approach to diagnosing performance issues, such as profiling applications, analyzing logs for slow queries, or integrating application performance monitoring (APM) tools. Be sure to mention how addressing these bottlenecks can improve user experience, particularly for a company focused on performance like Replo.

Share specific instances where you implemented or improved CI/CD practices. Discuss the tools and processes you used, and how these enhancements contributed to a more efficient development lifecycle, which is a priority for Replo.

Discuss your strategies for keeping up with industry trends, whether through online courses, tech blogs, or engaging with the developer community. Highlight the importance of this knowledge in innovating your approach to backend solutions at Replo.

Select a project that involved significant technical challenges and explain your problem-solving process. Detail how your experience is relevant to challenges faced when working with the systems and architecture at Replo, emphasizing resilience and adaptability.

Share what drives your passion for backend engineering, whether it’s solving complex problems, building systems that scale, or the satisfaction of seeing real-world impacts of your work. Align your motivations with Replo’s mission to automate performance marketing efficiently.