We’re looking for a skilled Senior Backend Engineer to design, build, and scale critical infrastructure for a product serving hundreds of thousands of users. You'll be part of a cross-functional product team and will collaborate closely with client engineers to develop robust APIs, scalable systems, and seamless backend solutions that directly enhance user experiences.

What you will do

Write well-structured, and efficient code contributing to the development of new services and features.
Identify bottlenecks and optimize existing infrastructure.
Shape the direction of the platform and the product, making architectural decisions and driving innovation and improvement.
Participate in the planning of technical tasks and code reviews.
Be an integral part of a dynamic team, willing to take the initiative and contribute to the continuous improvement and growth of the Zerion platform.
Work as part of an autonomous cross-functional team, and collaborate closely with frontend and mobile engineers on product development.

What we are looking for

5+ years of experience in designing & building distributed backend systems.
Solid knowledge of basic algorithms, data structures, and design patterns.
Familiarity with Blockchain systems, dApps, and smart contracts.
Willingness to work in a fast-paced startup environment.
Desire to take an active part in our product evolution.

You're likely to succeed if you have

Excellent knowledge of Golang.
Experience with containerized systems: Docker & Kubernetes.
Experience with SQL / NoSQL databases: Postgres, MongoDB, Cassandra.
Experience with monitoring tools: Sentry, Prometheus, and Grafana.
Experience with AWS (Amazon Web Services).
Experience with Python3.
Experience working in a startup environment, that encourages trust and autonomy.

Bonus Points

You are an active Web3 user.
You have worked with time-series data and specialized databases: ClickHouse, TimescaleDB, etc.
You have pet projects, blog articles and/or open-source contributions.
You have participated in the industry conferences.

Interview Process

Screening Call (30 minutes): A brief conversation to discuss your expectations, motivation and interest in the role.
Hiring Manager Call (45 minutes): A deeper discussion with the hiring manager to assess your fit for the position and the team.
Coding Interview (60 minutes): A technical assessment to evaluate your problem-solving and coding skills.
Systems Design Interview (90 minutes): A technical interview focusing on your ability to design and architect systems.
Team Interview (60 minutes): Meet key team members and assess how the candidate’s values, perspectives, and work style can enrich the team and contribute to its dynamic.
Founders Interview (60 minutes): A discussion with the founders to align on values, vision, and cultural fit.
Reference Check: Verifying your professional background through feedback from your previous colleagues and managers.

Why You Should Join

Company Overview

We’re experiencing phenomenal growth, with key metrics showing remarkable year-over-year progress compared to 2023:

Daily Active Users (DAW): Increased by 1.6x

Number of Transactions: Surged by 5x

Transacting Wallets: Doubled (2x)

Total Fee Revenue: Tripled (3x)

API Performance

Our API is scaling rapidly, showcasing its critical role in the ecosystem:

3.3 billion requests processed in 2024

Achieved a steady monthly revenue

Culture: Our culture shines through in our strong team engagement and impressive retention, showing just how much we value creating a workplace where people truly want to stay and thrive.

People: Collaborate with some of the most driven and intelligent individuals in the crypto space.

Salary & Benefits: Receive a competitive salary, medical insurance, coworking membership, and additional benefits.

Unlimited Days Off and Flexible Work Schedule: Recharge and explore life outside the office with our flexible time-off policy and work schedule.

Remote Work Essentials: We provide all the necessary software and equipment to ensure you're fully equipped to work from home comfortably and efficiently.

Stock Options: Contribute to Zerion's success and watch your stock options become valuable.

Relocation: We support relocation for you and your family.

Travel: Join your colleagues on trips to industry festivals and events.

Distributed Team: Zerion is a fully remote team with members worldwide. Embrace asynchronous collaboration, find your own work rhythm, and enjoy a healthy work-life balance.

To ALL recruitment agencies and individual recruiters: Zerion only accepts resumes from its partners, with whom Zerion has contractual relations. Zerion is not responsible for any fees or charges associated with unsolicited resumes.

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