Senior Software Engineer (Blockchain) $200K - $350K Remote US Join a fast-growing software company on a mission to redefine blockchain infrastructure. We're building a high-performance, open-source, proof-of-stake blockchain platform—engineered for speed, security, and enterprise-scale Web3 adoption. Our EVM-compatible network is governed by a council of global organizations and trusted by leading developers building the future of decentralized applications. About the Role We’re looking for a Senior Backend Engineer to join our Mirror Node team. You'll be working on one of the most critical components of our ecosystem—indexing massive datasets, designing efficient data structures, and building scalable APIs that power everything from wallets to explorers. If you're passionate about performance, love solving hard technical problems, and want to make an impact in Web3 infrastructure, we’d love to chat. What You’ll Do Own the end-to-end backend lifecycle: from design to development, deployment, and ops. Build robust and performant APIs (REST, GraphQL, gRPC) to serve hundreds of millions of users. Optimize queries and scale data infrastructure to handle 100s of TBs of on-chain data. Enhance system performance, reduce latency, and improve reliability and cost-efficiency. Participate in GitOps-based CI/CD and manage release cycles. What We’re Looking For 4+ years of backend development experience in Java . 3+ years working with relational databases (PostgreSQL preferred). Solid experience with Spring Boot , REST APIs, and modern backend architecture. 1+ years of experience with Kubernetes in production environments. Prior experience at a top-tier crypto company , FAANG , or high-growth startup . Strong fundamentals in data structures , system design, and performance tuning. Excellent communication skills and a collaborative, get-things-done mindset. Bonus Points Background in blockchain or distributed ledger technology. Familiarity with sharded databases (Citus, Spanner, Vitess, Cassandra, etc.). Experience with GraphQL , gRPC , Protobuf , and GitOps workflows. Proven track record of scaling systems handling massive datasets . Compensation & Perks Competitive equity & token incentives Performance-based bonuses Full health insurance + 401k (for US-based employees) Work with a world-class engineering team shaping the future of decentralized tech. Interview Process Intro Call – Get to know us and tackle a brief technical problem. Hiring Manager Interview – Deep-dive into your technical experience and challenges. Technical Interview – Live coding + system design assessment. Final Round – Meet with our VP of Engineering. Seniority level Mid-Senior level Employment type Full-time Job function Engineering and Information Technology Industries Software Development #J-18808-Ljbffr GroRapid Labs
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