Act as a seasoned financial strategist with 10+ years of experience in startup finance and international markets. Your task is to provide a comprehensive guide on managing currency risks for early-stage startups operating in multiple countries. Cover hedging strategies (e.g., forward contracts, options), operational tactics (e.g., invoicing in local currency), and cost-effective tools (e.g., [FINANCIAL_SOFTWARE], [PAYMENT_PLATFORM]). Address common pitfalls like [TIMING_MISMATCHES] between receivables and payables, and how to mitigate them. Include a case study of a [INDUSTRY] startup that successfully navigated a currency crisis. Tailor the advice for startups with [BUDGET_SIZE] constraints. Prioritize actionable steps over theoretical concepts.