Note: The job is a remote job and is open to candidates in USA. Zerion is a company building backend systems and customer-facing solutions for its products and API. The Senior Backend Engineer will design, build, and operate scalable distributed systems, develop Web3 infrastructure integrations, collaborate with product teams and API clients, and uphold strong standards for reliability, security, observability, and code quality.
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
- Work closely with product and engineering peers to actively shape product decisions — not just execute specs
- Scope solutions with the clients building on our API: turn a vague request into a concrete proposal, and the proposal into a plan the team can build
- 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
- Use AI as a core part of your engineering workflow — designing, reviewing, debugging and shipping with it. This is how the team works day to day, not an experiment we're running
- Contribute to technical discussions, reviews, and mentorship within the engineering team
Skills
- **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**
- Strong desire to **actively contribute to product evolution**, not just implementation
- Comfortable **working directly with customers** — hearing a vague problem and coming back with a concrete proposal
- Hands-on, **daily use of AI in your engineering work**. You should be able to talk concretely about where it has changed how you build, and where you've learned not to trust it
- High standards for **code quality, system reliability, and user experience** — you care about getting it right, not just getting it done
- Strong **ownership mindset** — you take responsibility for outcomes, not just tasks
- Clear and proactive **communication** in a distributed team
- Pragmatic decision-making: knowing when to **move fast vs. go deep**
- Ability to **learn quickly and adapt**
- Experience with **containerized systems**: Docker & Kubernetes
- Experience with **databases**:
- SQL: Postgres
- NoSQL: MongoDB, Cassandra
- Experience with **monitoring and observability tools**: Sentry, Prometheus, Grafana
- Hands-on experience with **AWS (Amazon Web Services)**
- Experience with **Python 3**
- Comfort experimenting with and integrating **AI-assisted workflows** into daily engineering work
- Excellent knowledge of **Golang is a plus, not a blocker.**
- **Hands-on Web3 experience:** Blockchain systems, dApps, Smart contracts
- Prior experience in a **startup environment** that emphasizes **trust and autonomy**
- Located in **time zones close to Europe** for smoother collaboration
- **Collaborative mindset** and respect for different perspectives
- Curiosity and willingness to **challenge existing solutions** when better ones exist
Benefits
- Medical insurance
- Coworking membership
- Unlimited days off and flexible work schedule
- All necessary software and equipment to work from home
- Stock options
- Travel to industry events and an annual team offsite
- Fully remote work
- Asynchronous collaboration and the ability to find your own work rhythm
Company Overview
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