SDE-2 Full-Stack Engineer

About Xybit
Xybit Inc. builds fintech and trading products for a global audience of traders and crypto-native users. Our platforms include The Funded Room, a proprietary trading evaluation program offering funded accounts, and Xento, a quest-to-earn platform where users earn points for social, onchain, learning and trading quests.

We are a small, senior team. One engineer here ships features that touch real money flows, real-time data and thousands of users, with no layers of process between you and production.

What you'll do

• Design, build and ship full-stack features across our web apps, APIs and admin tools, owning each from spec through release and monitoring.
• Model data and write performant Postgres queries, migrations and row-level security policies.
• Build and harden backend services, background jobs and webhooks that handle payments, payouts, KYC and trading-account events.
• Integrate third-party providers (payments, exchanges, email, analytics, onchain data) with retries, idempotency and clear failure handling.
• Build fast, accessible, responsive interfaces with strong state management.
• Write tests, add observability, and run safe rollouts.
• Review code, mentor junior engineers, and write clear design notes.
• Work directly with product, compliance, marketing and support to turn ambiguous problems into shippable work.

What you'll bring

• 3 to 5 years of professional experience shipping production full-stack applications.
• Strong TypeScript and JavaScript, with solid React (or Next.js) on the front end and Node.js on the back end.
• Deep working knowledge of PostgreSQL: schema design, indexing, query tuning, transactions and migrations.
• Experience designing REST or GraphQL APIs, including authentication, authorization and rate limiting.
• Comfort with cloud and serverless deployment, CI/CD, and debugging production issues.
• A habit of writing tests and handling edge cases, especially around money, concurrency and third-party failures.
• Clear written and spoken communication.
• Evidence of ownership: a feature or service you took from zero to production and kept running.

Nice to have

• Fintech, trading or prop-firm experience (ledgers, payouts, risk rules, reconciliation).
• Supabase experience: RLS, Edge Functions, Auth.
• Web3 exposure: wallets, onchain data, EVM chains, exchange APIs.
• Real-time systems: WebSockets, queues, pub/sub.
• KYC/AML flows, audit logging, PII handling.

Hiring process

• Application review
• First round with the tech team
• Take-home or live exercise (about 2 hours)
• Technical deep dive
• Offer and references

Compensation
USD 1,000+ per month, depending on experience and interview performance, plus performance-based bonus. Remote-first, flexible hours, learning budget.

Xybit Inc. is an equal opportunity employer. We hire on skill and potential, and welcome applicants of every background.