Fullstack Engineer

Responsibilities:

• Own end-to-end development of product features spanning frontend and backend, supporting wallet marketing campaigns, growth tools, and user acquisition features
  Integrate mainstream AI coding tools (e.g., Cursor, Copilot, Claude Code) as a core part of your daily workflow to maximize development efficiency
• Translate product/marketing/BD requirements into working implementations with minimal handoff friction between frontend and backend
• Own the quality of what you ship: define the test approach for each feature, write automated tests (unit, API, E2E), and deliver campaign features that are release-ready without relying on a long, separate QA cycle
• Take part in requirement reviews to clarify acceptance criteria and edge cases early (campaign time windows, reward rules, eligibility, multi-region / multi-language)
• Ship safely: use feature flags and gray releases, verify behavior after release through logs and monitoring, and keep a clear rollback plan
• Act as a full stack "seed" within your team — champion full stack practices, mentor peers, and help scale AI-augmented development across the organization
• Proactively identify efficiency bottlenecks in cross-team collaboration and propose improvements to product, design, and engineering processes
• Contribute to the full product lifecycle — from ideation and design to deployment and iteration

Requirements:

• Bachelor's degree or above; Computer Science or AI-related major preferred
• 3–8 years of professional experience
• Solid foundation in at least one backend language: Java or Golang
• Proficiency in Node.js and React
• Experience owning end-to-end projects in production — not just personal side projects
• Familiarity with database design, data modeling, and core backend concepts
• Highly proficient with mainstream AI coding tools (Cursor, Copilot, Claude Code, or similar)
• Ability to clearly articulate requirements and constraints to AI tools; strong enough fundamentals to review, validate, and correct AI-generated code
• Solid testing fundamentals: the test pyramid, test design techniques (boundary values, equivalence classes, state transitions), and writing code that is easy to test
• Hands-on experience with testing frameworks, for example Jest / Vitest, React Testing Library, Playwright / Cypress, JUnit / Mockito or Go testing, and API testing tools
• Familiarity with CI/CD quality gates (required checks, coverage, lint) and with troubleshooting production issues through logs, metrics, and tracing
• Security awareness for user-facing pages: input validation, XSS, authentication / authorization basics (OWASP Top 10)
• Self-driven and boundaryless — you don't wait for tasks to be assigned; you proactively identify what needs to be done
• Product and operational mindset — you can turn vague ideas into clear specs
• Curious observer — you pay attention to how other teams work and actively suggest improvements
• Strong logical thinking and communication skills; passionate about learning new technologies
• Bilingual English/Mandarin is required to be able to coordinate with overseas partners and stakeholders.
• Creative and opinionated — willing to propose and stand by your own ideas, comfortable experimenting, with a sharp sense for market/growth scenarios
  
  

Nice to Have:

• Knowledge of Web3/blockchain fundamentals
• Experience with crypto wallets, DApps, or financial products
• Experience building marketing pages, growth tools, or campaign features
• Creative/growth-oriented projects
• Performance / load testing experience (e.g., k6, JMeter) for peak traffic at campaign launch
• Web3 testing experience: testnets, verifying on-chain transactions, multi-chain scenarios, wallet connection and signature flows
• Experience with data reconciliation or testing financial-grade features (balances, rewards, settlement)