backend developer for Web3 platform systems

Zerion builds products and customer-facing solutions powered by its backend systems. Its API serves crypto and fintech brands and clients, while its wallet has over 1.7 million active funded wallets.

• 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
• Shape product decisions with product and engineering peers
• Scope solutions with API clients, turning vague requests into concrete proposals and buildable plans
• Build and evolve Web3 platform backend components, including protocol integrations, support for emerging blockchain networks, and reliable smart contract interactions
• Ensure high standards of code quality, performance, security, and observability
• Balance speed and correctness in a fast-paced startup environment
• Use AI throughout the engineering workflow, including designing, reviewing, debugging, and shipping
• Contribute to technical discussions, reviews, and mentorship within the engineering team

• 5+ Years of experience designing and building distributed backend systems
• Strong knowledge of algorithms, data structures, and software design patterns
• Comfortable working in a fast-paced startup environment and directly with customers
• Able to turn vague customer problems into concrete proposals
• Hands-on, daily use of AI in engineering, with concrete examples of its impact and limitations
• High standards for code quality, system reliability, and user experience
• Strong ownership, proactive communication in a distributed team, pragmatic decision-making, and ability to learn and adapt quickly
• Experience with Docker, Kubernetes, Postgres, MongoDB, Cassandra, Sentry, Prometheus, Grafana, AWS, and Python 3
• Будет плюсом: Excellent knowledge of Golang, hands-on Web3 experience with blockchain systems, dApps, or smart contracts, prior experience in a startup emphasizing trust and autonomy, time zones close to Europe, collaborative mindset, respect for different perspectives, curiosity, and willingness to challenge existing solutions

• Competitive salary, medical insurance, coworking membership, and additional benefits
• Unlimited days off and a flexible work schedule
• Software and equipment for working from home
• Stock options
• Travel to industry events and an annual team offsite
• Fully remote, distributed team with asynchronous collaboration and flexible work rhythms