Checkatrade is seeking a Senior Software Engineer in Trust & Safety in Barcelona. You will own systems for verifying tradespeople, processing reviews, and content moderation, shaping a scalable, trustworthy marketplace.You’ll respond to production incidents, design robust event-driven workflows, and collaborate with vetting and reviews teams to translate trust needs into reliable software. You will work with TypeScript, Fastify/Node.js, and Next.js, with strong emphasis on observability,