VibeCodeCareers 
Fully remote, mid-level position at Genki, a startup offering health insurance for digital nomads worldwide. The role involves developing and evolving the core backend systems using Kotlin and event sourcing.
Skills / Requirements
- AI-agentic Development
- Backend Development
- Claude Code
- Code Quality
- Codex
- Complex Product Domains
- Event Sourcing
- GraphQL
- Heroku
- Kotlin
- Railway
- Stripe
- Vibe Coding
Why Apply
This role is ideal for developers familiar with AI-agentic tools like Claude Code, as Genki is integrating these into their fast-paced development process. The custom framework built around event sourcing offers a unique challenge for those comfortable with reading and adapting to undocumented code.
What You'll Be Doing
You'll work closely with the Lead Backend Developer to build new features and enhance the reliability of Genki's backend systems. Your day-to-day will involve understanding complex product domains, improving system architecture, and making informed decisions in a fast-moving environment.
Working in Remote
- Enjoy the flexibility of working from anywhere in the world, perfect for digital nomads.
- Fully remote setup encourages a work-life balance tailored to your personal schedule.
- Async-first communication allows for minimal meetings and more focused work time.
Pay and Career Growth
The role offers up to 5,000 EUR/month based on experience, with equity participation through a vesting program. Genki's startup atmosphere provides a dynamic environment with flexible hours and opportunities for professional growth.
Benefits and Perks
- 25 days paid leave
- co-working space
- Employee equity
- Flexible Hours
- fully remote
- MacBook
- team off-sites
Is This Role Right for You?
Good fit if you...
- You have experience with AI-agentic development tools and want to deepen your skills.
- You're comfortable with event-driven architectures and have worked on complex backend systems.
- You thrive in a remote, async-first environment and are self-driven.
May not be for you if...
- You prefer highly structured environments with fully documented systems.
- You're not comfortable making decisions with incomplete information.
- You lack experience in event sourcing or similar architectural patterns.
Original Job Description
🌱 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
Job Overview
🌱 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