Staff Software Engineer, Backend (Bucharest)

About this role

<div class="content-intro"><p>Cresta unlocks the true potential of the customer experience, turning every conversation into a competitive advantage. Cresta’s unified AI platform combines conversational AI agents, real-time human agent augmentation, and comprehensive conversation intelligence to drive revenue and efficiency gains across every channel. The world’s leading companies, including United Airlines, Cox Communications, and Marriott, use Cresta to power world-class customer experiences every day. </p> <p>Born from the Stanford AI Lab, Cresta has raised more than $270 million from the world’s leading investors, including a16z, Greylock, and Sequoia. Cresta’s leadership includes some of the leading minds in AI today. Our CEO, <a href="https://www.linkedin.com/in/pingwu/">Ping Wu</a>, founded and led Google's Contact Center AI and Vertex AI platforms before joining Cresta to build the future of AI-driven customer experiences.</p> <p>Over the next few years, AI is going to redefine how people all over the world interact with businesses every day. Come build that future at Cresta.</p></div><div class="section page-centered" data-qa="job-description"> <div> <div> </div> <div> <div class="job__description body"> <p>Cresta is excited to expand our operations to Romania and build a tech hub in the region. These early joiners will play a key role in establishing our engineering team in Romania, helping to shape the future of the site. We are a remote-first environment, offering opportunities to work with a global team across Europe, the US, and Canada. Over time, we aim to create a co-working space in Romania, moving towards a hybrid environment.</p> </div> </div> </div> <div class="section page-centered" data-qa="job-description"> <h4><strong>About the role:</strong></h4> <p>Cresta Insights: As a Staff full-stack engineer, with a backend focus, you will be at the forefront of shaping the future of customer engagement! As we work towards our vision, you'll be instrumental in delivering timely, actionable insights that drive business growth from day one. We're building a state-of-the-art Customer Data Platform, visualizing relevant insights for businesses post-onboarding and guiding customer engagement across all touch-points. Be part of the team that's redefining the way businesses connect with their customers!</p> </div> <h4>Responsibilities:</h4> <ul> <li data-stringify-indent="0" data-stringify-border="0">Design, implement, and maintain backend services and APIs to support applications.</li> <li data-stringify-indent="0" data-stringify-border="0">Build and optimize data storage solutions using <strong data-stringify-type="bold">Postgres</strong>, <strong data-stringify-type="bold">ClickHouse</strong> and <strong data-stringify-type="bold">Elasticsearch</strong> to ensure high performance and scalability.</li> <li data-stringify-indent="0" data-stringify-border="0">Collaborate with cross-functional teams, including frontend engineers, data scientists, and machine learning engineers, to deliver end-to-end solutions.</li> <li data-stringify-indent="0" data-stringify-border="0">Monitor and troubleshoot performance issues in distributed systems and databases.</li> <li data-stringify-indent="0" data-stringify-border="0">Write clean, maintainable, and efficient code following best practices for backend development.</li> <li data-stringify-indent="0" data-stringify-border="0">Participate in code reviews, testing, and continuous integration efforts.</li> <li data-stringify-indent="0" data-stringify-border="0">Ensure security, scalability, and reliability of backend services.</li> <li data-stringify-indent="0" data-stringify-border="0">Analyze and improve system architecture, focusing on performance bottlenecks, scaling, and security.</li> </ul> <h4>Qualifications We Value:</h4> <div class="section page-centered"> <ul> <li data-stringify-indent="0" data-stringify-border="0">Proven experience as a <strong data-stringify-type="bold">Backend Engineer</strong> with a focus on database design and system architecture.</li> <li data-stringify-indent="0" data-stringify-border="0">Strong expertise in <strong data-stringify-type="bold">ClickHouse</strong> or similar columnar databases for managing large-scale, real-time analytical queries.</li> <li data-stringify-indent="0" data-stringify-border="0">Hands-on experience with <strong data-stringify-type="bold">Elasticsearch</strong> for indexing and searching large datasets.</li> <li data-stringify-indent="0" data-stringify-border="0">Proficient in backend programming languages such as <strong data-stringify-type="bold">Python</strong>, <strong data-stringify-type="bold">Go</strong>.</li> <li data-stringify-indent="0" data-stringify-border="0">Experience with RESTful API design and development.</li> <li data-stringify-indent="0" data-stringify-border="0">Solid understanding of distributed systems,…