Backend Engineer

• Design, 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.

• 3+ 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 haves

• Background 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).

• Generous 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 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.