About
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.
Responsibilities
•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
Requirements
•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
Nice to have
•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
Conditions
•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
