Experteer Overview In this role you will be a senior member of a self-managed delivery team focused on the high-throughput connectivity layer that drives our search and supplier traffic.

You will shape technical direction, build in C# and Go, and make data-driven decisions to improve performance and reliability.

You'll ship safely in a high-volume environment with feature flags and incremental rollouts, while mentoring others and contributing to a culture of trust and collaboration.

This opportunity lets you influence core platform stability and scalability at a general, growth-focused company.

Compensaciones / Beneficios • Shape technical direction within a self-managed engineering team and uphold standards • Build and evolve the connectivity layer behind search and supplier traffic in C# and Go (native hot-path component) • Benchmark, profile in production, and make data-driven decisions with experiments • Ship changes safely at high volume using feature flags, incremental rollout, rollback and parity checks • Write clean, maintainable,



and secure code following design patterns and SOLID principles • Collaborate with QA to enable automated testing and reliable deployments • Lead by example, mentoring peers through code reviews, pairing, and knowledge sharing • Raise technical debt with data-backed improvement ideas • Document work (specs, decisions, recommendations) to prevent single points of failure Responsabilidades • 5+ years of backend software development with production experience in C# (.NET) and/or Go (ideally both) • Strong .

NET performance knowledge (async/await internals, garbage collector, Span and pooling) • Solid understanding of concurrency and multithreading (thread safety, locking, race conditions, deadlocks) • Working knowledge of Linux and clients ( connection pooling, TLS, DNS, timeouts, cancellation) • Hands-on experience benchmarking and profiling; diagnosing CPU/memory/GC issues with real tooling • Experience shipping safely in high-traffic production systems using feature flags, incremental rollout, rollback, metrics and tracing • Effective everyday use of AI coding tools • Fluent English communication (written and spoken) Requisitos principales •

📌 Senior .NET Developer (English speaker) (Islas Baleares)
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📍 Islas Baleares