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Cresta Logo Cresta · IT - Software Development

Staff Software Engineer, Backend

Romania, Cluj-Napoca · Job Posted January 31, 2026
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Job Description

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. 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!

Job Responsibility

  • 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

Requirements

  • 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
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