Web3 Insights is proud to represent a well-funded fast-growing company redefining how developers build secure, seamless, and scalable wallet infrastructure. Their platform provides open-source, programmable, and gasless wallet infrastructure that lets developers focus on building great products instead of managing complex crypto tooling.We're hiring a Backend Engineer - someone who’ll own the backend systems that power our crypto and self‑custody platform. You’ll bring deep expertise in Go, and TypeScript.What you’ll doDesign, implement, and operate scalable, resilient backend services handling millions of API requests per month.Author high‑performance microservices in Go and TypeScript, ensuring clean, maintainable code and robust test coverage.Architect messaging workflows using RabbitMQ (or similar), optimizing for throughput, latency, and fault tolerance.Manage and evolve our cloud infrastructure on GCP - VMs, Kubernetes clusters, CI/CD pipelines, networking, and monitoring.Drive technical decisions: from database schema design to distributed cache strategies and sharding approaches.Your profile3+ years of backend experience building production systems in Go and TypeScript .Hands‑on expertise with GCP services (Compute Engine, GKE, Pub/Sub, Cloud SQL/Spanner, IAM).Proven track record designing message‑driven architectures with RabbitMQ, Kafka, or similar.Strong knowledge of Kubernetes: deploying, scaling, and troubleshooting at scale.Solid understanding of distributed systems principles: consensus, leader election, partition tolerance.Familiarity with cryptographic concepts (key management, signatures, encryption) and a curiosity to dig deeper.Nice to havesBackground in Rust, or systems programming.Experience with Infrastructure as Code (Terraform, Cloud Deployment Manager).Open‑source contributions or side projects showcasing your distributed systems chops.Familiarity with observability tools (Prometheus, Grafana, OpenTelemetry).BenefitsGenerous pay & developer-first culture: Work with a high-impact, well-compensated team in Barcelona building next-generation wallet infrastructure.High-ownership engineering team: Ship code that powers millions of wallets and transactions, with autonomy and real influence on architecture and product decisions.Learning and growth mindset: Collaborate with experts in distributed systems, cryptography, and cloud infrastructure - grow your skills through open-source and real-world scale challenges.Web3 Insights and our client are proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all team members. All qualified applicants will receive consideration for employment without regard to race, colour, religion, gender, gender identity, sexual orientation, age, disability, or any other protected status.