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Senior Backend Engineer at Zerion. Location Information: United States. Smart & Social Web3 Wallet. Explore, build & track your DeFi & NFT portfolios - on any chain, dApp, and wallet.. Design, build, and maintain scalable distributed backend systems powering platform and product capabilities.. Own backend services end-to-end: from architecture and implementation to monitoring and long-term reliability.. Work closely with product and engineering peers to actively shape product decisions — not just execute specs.. Build and evolve Web3 platform backend components, including protocol integrations, support for newly emerging blockchain networks, and reliable interactions with smart contracts.. Ensure high standards of code quality, performance, security, and observability.. Operate comfortably in a fast-paced startup environment, balancing speed and correctness.. Leverage AI-assisted tools to improve development velocity, code quality, and personal productivity.. Contribute to technical discussions, reviews, and mentorship within the engineering team.. 5+ years of experience designing and building distributed backend systems.. Strong foundation in algorithms, data structures, and software design patterns.. Hands-on Web3 experience: Blockchain systems, dApps, Smart contracts.. Strong ownership mindset — responsibility for outcomes, not just tasks.. Clear, proactive communication in a distributed, async-first team.. Ability to make pragmatic decisions: knowing when to move fast vs. go deep.. High learning velocity and adaptability, especially with new tools or approaches.. Excellent knowledge of Golang.. Experience with containerized systems: Docker & Kubernetes.. Databases: Postgres (SQL), MongoDB, Cassandra (NoSQL).. Monitoring & observability: Sentry, Prometheus, Grafana.. Hands-on experience with AWS.. Experience with Python 3.. Competitive salary. Medical insurance. Coworking membership. Unlimited days off. Flexible work schedule. Remote work essentials. Stock options. Relocation support for you and your family. Travel opportunities to industry festivals and events. Distributed team: fully remote with asynchronous collaboration