Worked on the discord/opentelemetry-erlang repository to deliver a performance-oriented feature focused on Span Context Hex ID precomputation and storage. This involved implementing a dedicated hex encoding function in Erlang to precompute and store hexadecimal representations of trace and span IDs within the span context, replacing the previous approach of on-the-fly string formatting. By making hex IDs readily available to downstream components, the change reduced hot-path overhead and improved traceability and reliability in distributed systems. The work aligned with upstream OpenTelemetry changes and demonstrated backend development and performance optimization skills, contributing to more efficient observability infrastructure.