Principal Tech Lead (Backend oriented)

At Similarweb, we are revolutionizing the way businesses interact with the digital world by revealing to them everything that happens online. We are looking for a Principal Tech Lead to join our team. The Principal Tech Lead will serve as the premier architectural authority within the group, directly shaping the high-scale backend engines that power Similarweb’s Intelligence products. This role demands a unique combination of elite software craftsmanship, visionary systems design, and hands-on execution velocity.

Responsibilities

Architectural Governance: Own the end-to-end design, scalability, and performance of complex backend distributed systems. Ensure architectures are resilient, modular, and optimized for intensive data workloads; Agentic Engineering Innovation: Champion and embed Agentic SDLC paradigms, tools and solutions into the engineering lifecycle. Design frameworks that enable autonomous AI agents to build, test, and deploy features end-to-end, while enforcing rigorous quality gates and deterministic production guardrails; Cross-Project Orchestration: Maintain an exceptionally large context window to actively guide and facilitate multiple highly technical streams and parallel projects simultaneously without losing focus or delivery speed; Guild Leadership & Mentorship: Act as the primary technical sounding board for the engineering community. Lead backend guild sessions, introduce emerging technologies, and actively mentor senior and staff engineers to elevate the group's collective capabilities; High-Velocity Execution: Lead by example. When taking on critical path, hands-on tasks, execute with unmatched speed and quality, demonstrating what peak operational efficiency looks like

Requirements

Seasoned Architect: Proven track record of designing and scaling complex, large-scale distributed production systems under heavy load; Deep-Dive Problem Solver: Innate curiosity and technical depth that makes you the go-to expert with whom peers across the organization want to collaborate and bounce architectural ideas; AI & Agentic Pioneer: Deep, practical familiarity with Agentic Engineering concepts, tools, LLM APIs, orchestration frameworks, and prompt-to-production paradigms; Natural Mentor: Passionate about cultivating talent, active community engagement, and driving internal knowledge-sharing frameworks

Benefits

Competitive compensation packages; Regular team outings; Happy hours; Career development opportunities; Inclusive workplace