Build secure blockchain services for crypto lending, borrowing, and trading flows across Bitcoin (BTC), Ethereum (ETH), and USDT operations.
Tech stack: TypeScript, Node.js, Solidity, Hardhat or Foundry, PostgreSQL, Redis, Docker, AWS
Required experience: 4+ years in backend or blockchain engineering, including 2+ years delivering production smart contracts, wallet integrations, or exchange infrastructure.
Key responsibilities and knowledge
- Design and maintain blockchain-aware backend services with strong observability and rollback safety.
- Write and review smart-contract logic with security-first practices and clear test coverage.
- Understand custody patterns, withdrawal pipelines, signing flows, and chain confirmation handling.
- Work with product and compliance teams on risk controls relevant to Vauld Crypto platform operations.
Build performant interfaces with strong UX quality and a sharp focus on reliability.
Tech stack: React, Next.js, TypeScript, styled-components, Playwright, Sentry
Required experience: 3+ years building production web apps, with proven delivery in performance-sensitive products such as fintech, crypto exchange, or wallet dashboards.
Key responsibilities and knowledge
- Ship responsive interfaces for account, portfolio, and crypto trading surfaces.
- Maintain accessibility, error handling, and resilient data-fetch states at scale.
- Collaborate closely with design and backend teams to keep UX consistent and conversion-focused.
- Optimize Core Web Vitals and loading behavior for high-traffic financial pages.
Own end-to-end quality validation for wallet, KYC, distribution, and withdrawal journeys across the Vauld platform.
Tech stack: Playwright, Cypress, Postman, SQL, Jira, GitHub Actions, k6
Required experience: 3+ years in web/API QA, including automated test coverage and regression strategy for fintech, crypto, or payment products.
Key responsibilities and knowledge
- Build and maintain automated UI/API suites for high-risk user actions and critical business paths.
- Validate release quality for vauld withdrawal update flows, KYC checkpoints, and transaction status transitions.
- Partner with engineering to isolate root causes, improve test data quality, and reduce escaped defects.
- Run performance and reliability checks before release windows and incident-prone changes.
Support KYC, monitoring, and control frameworks while scaling compliance quality for a global crypto product.
Tech stack: KYC tooling, AML monitoring systems, Google Sheets, SQL (basic), Notion, Jira
Required experience: 2+ years in compliance, risk, or financial operations, preferably in crypto, digital assets, or payment institutions.
Key responsibilities and knowledge
- Review onboarding and account activity against internal policy and jurisdictional requirements.
- Document escalation outcomes clearly for audit readiness and operational traceability.
- Coordinate with legal, support, and product teams on process updates and user communications.
- Contribute to policy hygiene and control design relevant to Vauld Restructuring and ongoing platform operations.