Senior Fullstack Engineer

We're looking for a Senior Software Engineer who can move fluidly across the stack — frontend and backend — and who uses AI-native tools (Claude Code, Cursor, Codex, and similar) as a part of how they build, not as an afterthought.

Whichever side of the stack you're strongest in today, we expect depth there and genuine curiosity about the other side:

• Deep skills in TypeScript and React (Hooks, Context); you understand how React works under the hood (re-rendering, virtual DOM).
• Comfortable with modern build tools (Vite, Turbo) and monorepos.
• Strong foundation in performance optimization and code-splitting.

• Strong computer science foundation and problem-solving skills.
• Experience with SOA architecture (Golang/Node.js preferred), MongoDB/PostgreSQL, and AWS services.
• Comfortable designing systems that stay fast even as traffic scales 10x.

• You use AI tools (Claude Code, Cursor, Codex, etc.) as a genuine engineering practice — not just autocomplete. You know what to delegate to AI and what requires your own judgment, and you remain fully responsible for the code you ship.

This is what we screen for most carefully:

• Why & What before How. When you receive a request, your first instinct is to ask why it needs to exist and what problem it actually solves — not to jump straight into implementation.
• You build for the user, not just the ticket. Whether it's an external customer or an internal ops teammate, you think about whether what you're building actually helps them, and you're not satisfied shipping something no one asked for or no one uses.
• You see the big picture. You think about downstream impact, maintainability, and business consequences — not just your feature or module in isolation.
• You've built things because you saw they were needed — not only because you were assigned to. Personal projects, internal tools, or improvements you drove yourself are all strong signals here.

• High responsibility. You work independently. You don't wait for detailed instructions — you talk to the PM, understand the requirement, and deliver the solution.
• Ships to production. You take things all the way, not just to prototype or demo stage.
• Clear async communication. You can explain technical problems to non-technical stakeholders clearly and respectfully, and you document assumptions rather than blocking on answers.
• Teamwork. You believe in code reviews and knowledge sharing, and you help the team get better every day.

• Experience shipping AI or conversational UI features that improved real user outcomes.
• Experience with SaaS-specific problems (fair usage, noisy neighbor), large-scale databases (sharding, partitioning, no-downtime migration), Martech, or Fintech domains.
• Experience building internal tools for non-technical teams (ops, CS, support).
• Experience leading an engineering team or mentoring other engineers.

• Design-First Culture. We don't treat design as an afterthought — you'll work on a product famous for being beautiful.
• Impact & Scale. Your work directly empowers 600,000+ users, and you'll get to work with billion-scale data — a rare opportunity at most startups.
• Culture. We're a lean, fast-growing team that values Clarity, Craft, Curiosity and Care.