Backend Engineer, Data Foundations

We are looking for an Experienced Backend Engineer to join our Data Foundations team. Dive into the heart of Similarweb’s engineering core as a pivotal member of our team, dedicated to constructing the internal tools and services that are the cornerstone of our data-centric universe.

Responsibilities

Design and build backend systems that power customer signup, trials, purchases, subscriptions, and account lifecycle across Similarweb’s product suite; Own revenue-critical flows end to end, from first signup through billing, upgrades, renewals, cancellations, and payment recovery, with high reliability and clear error handling; Integrate with external billing, payment, and CRM platforms, building and maintaining robust API integrations, webhooks, and async processing for third-party systems; Evolve a large legacy platform into modern services, decompose monolithic components into focused microservices while keeping production stable and minimizing risk to customer-facing flows; Build event-driven and asynchronous workflows, process inbound callbacks, domain events, and background jobs that keep subscription and account data consistent across systems; Collaborate cross-functionally with frontend, product, and growth teams on features that directly impact conversion, retention, and customer experience; Ship with quality: write tests, participate in code reviews, investigate production issues, and improve monitoring for business-critical paths; Effectively use the latest AI technologies and in-house AI tools to accelerate development while maintaining high engineering standards; Work in a modern .NET backend stack — ASP.NET Core, relational databases, message queues, caching, and service-to-service communication

Requirements

A BSc in Computer Science, Mathematics, or related fields; 4+ years of hands-on coding experience in C# and .NET; A knack for understanding and solving complex data management challenges; Experience improving stability of large-scale systems using monitoring, solving bottlenecks and making appropriate changes; High coding standards, working independently and experience leading long term tech tasks involving many teams and stakeholders; Exceptional communication skills; Good understanding of CI/CD pipelines; An approachable, fun, and positive demeanor

Benefits

Competitive compensation packages; Regular team outings and happy hours; Career Week; Personalized coaching; Ongoing learning solutions; Inclusive workplace