中级后端开发工程师
Mid-Level Backend Developer
🌱 Genki 意味着“健康、充满活力、精神饱满”。这就是我们。
🚀 我们是一家完全远程、盈利的初创公司，约有25名员工，成立五年，正在稳步增长。
🌍 我们为长期旅行者（如数字游民）提供定制的健康保险，在200个国家服务了超过75,000人。
💚 我们的愿景是帮助他们在任何地方保持健康，远不止于保险。
我们正在寻找一位中高级后端开发人员，协助构建和演进支撑我们产品和运营的核心系统。你将成为我们后端团队的第二位开发人员，向我们的首席后端开发人员汇报。
我们的后端使用 Kotlin，并基于事件溯源构建了一个自定义框架。目前尚未完全文档化，因此你需要习惯阅读代码、提问，并在仍在塑造的系统中找到自己的方向。你将开发新功能，提高可测试性和可靠性，并随时间推移帮助演进架构。
产品复杂，涵盖多个领域。你需要快速建立深入理解，并能处理信息不完整的情况做出决策。
我们发展迅速，越来越多地使用 AI 代理开发工具。你应该对这些工具有一定的实践经验，并有深入探索的真实动力。
向我们展示你的实力。请发送你的 GitHub 个人资料链接、代码示例、提示词、用 vibe 编码的求职申请，或任何最能表达你经验的方式！
**经验**
- 你在生产环境中参与过大型后端系统，并理解它们带来的复杂性。
- 你在复杂的业务领域工作过，能够快速掌握那些并不总是显而易见的业务逻辑。
- 你熟悉事件溯源、事件驱动架构或类似模式。
- 你重视代码质量：可读性强的代码、有意义的测试和干净的 API。
- 你对 AI 代理开发工具（如 Claude Code、Codex 或类似工具）有一定实践经验，并希望进一步深入。
**我们当前的技术栈**
- 语言：Kotlin 与协程
- 框架：自定义，围绕事件溯源构建
- 计费：Stripe
- 基础设施：Heroku（正在迁移到 Railway）
- AI 代理开发：Claude Code 配合自定义插件
- APIs：GraphQL
**工作风格**
- 你注重细节，并以正确完成它们为荣。
- 你充满好奇心且自我驱动。你会深入研究不熟悉的代码，提出好问题并解决问题。
- 你更倾向于理解为什么某件事有效，而不是仅仅让它运行起来。
- 你习惯于在远程环境中工作，适应灵活的时间安排。
查看英文原文
🌱 Genki means "healthy, energetic, and full of spirit". That's us.
🚀 We're a fully remote, profitable startup of about 25 people, five years in and growing steadily.
🌍 We build tailored health insurance for long-term travelers like digital nomads, serving over 75,000 people in 200 countries.
💚 Our vision is to help them stay healthy wherever they go, far beyond insurance.
We're looking for a Mid-Level Backend Developer to help build and evolve the core system that powers our products and operations. You'll join as the second developer in our backend team, reporting to our Lead Backend Developer.
Our backend runs on Kotlin with a custom framework built around event sourcing. It's not yet fully documented, so you'll need to be comfortable reading code, asking questions, and finding your way through a system that's still being shaped. You'll build new features, improve testability and reliability, and help evolve the architecture over time.
The product is complex and spans multiple domains. You'll need to build deep understanding quickly and be comfortable making decisions with incomplete information.
We're moving fast, increasingly with AI-agentic development tools. You should have some hands-on experience with these tools and a genuine drive to go deeper.
Show us what you've got. Send us a link to your GitHub profile, code samples, prompts, a vibe-coded job application, or whatever expresses your experience best!
**Experience**
- You've worked on larger backend systems in production and understand the complexity they bring.
- You've worked in complex product domains and can ramp up quickly on business logic that isn't always obvious.
- You're comfortable with event sourcing, event-driven architecture, or similar patterns.
- You care about code quality: readable code, meaningful tests, and clean APIs.
- You have some experience with AI-agentic development tools (Claude Code, Codex, or similar) and want to go deeper.
**Our current tech stack**
- Language: Kotlin with coroutines
- Framework: Custom, built around event sourcing
- Billing: Stripe
- Infrastructure: Heroku (migrating to Railway)
- AI-agentic development: Claude Code with custom plugin
- APIs: GraphQL
**Working style**
- You pay close attention to the details and take pride in getting them right.
- You're curious and self-driven. You dig into unfamiliar code, ask good questions, and figure things out.
- You'd rather understand why something works than just make it work.
- You're comfortable making decisions when not all the information is there yet.
- You've worked in a startup or scaleup and know what that pace and ambiguity feels like.
- You thrive in a fully remote, async-first team and know how to communicate clearly without meetings for everything.
- You're as open to different ideas, opinions, and to people with different cultures, backgrounds, and interests as we are.
💰 Up to 5,000 EUR/month (depending on experience) with employee equity participation through a vesting program
🏝 Fully remote, from anywhere in the world & live as a digital nomad if you want to (the country list above are just examples)
🕗 Flexible hours, startup atmosphere
🌍 Most of the team is in Europe and Southeast Asia, with a few hours of daily overlap around German business hours
💻 Company-issued and managed MacBook, plus a desk in your favorite co-working space
✈️ 25 days paid annual leave
🤝 Regular team off-sites to connect in person