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Staff Software Engineer, Backend (Cluj)

Cresta· Engineering
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Hybrid (Cluj)full-timePosted 3mo ago

About the role

Staff full-stack engineer with a backend focus at Cresta, building a state-of-the-art Customer Data Platform and driving insights for customer engagement. Hybrid role based in Cluj, Romania, with global collaboration and potential move towards hybrid/co-working in Romania.

Responsibilities

  • Design, implement, and maintain backend services and APIs to support applications.
  • Build and optimize data storage solutions using Postgres, ClickHouse and Elasticsearch to ensure high performance and scalability.
  • Collaborate with cross-functional teams, including frontend engineers, data scientists, and machine learning engineers, to deliver end-to-end solutions.
  • Monitor and troubleshoot performance issues in distributed systems and databases.
  • Write clean, maintainable, and efficient code following best practices for backend development.
  • Participate in code reviews, testing, and continuous integration efforts.
  • Ensure security, scalability, and reliability of backend services.
  • Analyze and improve system architecture, focusing on performance bottlenecks, scaling, and security.

Qualifications

  • Proven experience as a Backend Engineer with a focus on database design and system architecture.
  • Strong expertise in ClickHouse or similar columnar databases for managing large-scale, real-time analytical queries.
  • Hands-on experience with Elasticsearch for indexing and searching large datasets.
  • Proficient in backend programming languages such as Python, Go.
  • Experience with RESTful API design and development.
  • Solid understanding of distributed systems, microservices architecture, and cloud infrastructure.
  • Experience with performance tuning, data modeling, and query optimization.
  • Strong problem-solving skills and attention to detail.
  • Excellent communication and teamwork abilities.

Skills

Required:Backend engineeringPostgresClickHouseElasticsearchPythonGoRESTful API designDistributed systemsCloud infrastructure

Benefits

  • Base salary, equity, and a variety of benefits.
Last updated Sep 17, 2026. Interested? Apply on the company site.

About Cresta

AI Agents for Every Customer Conversation | Cresta

AI Agents for Every Customer Conversation | Cresta

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