At Saily, we’re removing the hassle of staying connected while traveling — no roaming fees, no plastic SIM cards, just lightning-fast, secure mobile data in 200+ destinations. Saily has millions of paying customers and hundreds of thousands travelers browsing through Saily at any given moment.
To build the best product for our customers we foster AI-native Product Engineering culture, where:
- The Engineer is the builder, who is responsible for solving customer problems end-to-end (idea to production)
- AI Agents are the enablers who write most of the code and solve repeatable tasks to help the Engineers maximize their impact
- Everyone contributes to making Saily effective by suggesting new areas for improvement to delegate to agents and then implementing the changes
- Curiosity, learning and sharing are everyone's responsibility
- Customer, having a comfortable, connected, hassle-free journey is never lost from the focus
We value growth over comfort, contribution over hierarchy, and impact over process. At Saily, we believe in giving sharp people context, autonomy, and AI as their multiplier to allow them to just do their best work.
Main Responsibilities
Own problems end-to-end—from idea to production
Deliver features without relying on fully defined or perfect specifications
Work directly with product, design, data, and other engineers
Operate in small, highly autonomous teams
Use AI agents for specifications, coding, analysis, testing, and iteration
Deliver 2x the output of a non-AI using Senior Engineer
Improve our internal agent network and development workflows
Move across the stack when needed
Focus on user and business outcomes, not output
Core Requirements
Proven experience designing, building, and deploying AI-native tools or applications within an organization, which has seen measurable, successful adoption
Comfortable operating with minimal guidance and with no initial acceptance criteria
Strong product mindset: focus on problems, outcomes, and impact—not just tickets or tasks
5+ years of development experience building something real (product, system, tool, startup, side project, meaningful feature)
Strong expertise in native IOS or Android development, desire to work cross functionally / as full-stack
Nice to Have
Proven experience building full-stack features across mobile or web applications (frontend + backend)
Tools You Will Use
Backend: Go, MySQL, Kafka, Docker, Kubernetes, AWS, Redis
Frontend: Next.js, React.js, TypeScript, GraphQL, Tailwind CSS, Cloudflare Workers
IOS: SwiftUI, Xcode, Combine, SPM, MVVM Architecture
Android: Kotlin, Android Studio, Hilt, Coroutines, Jetpack Compose, MVVM Architecture
AI tools: Claude Code, OpenAI Codex, OpenCode, Cursor with Composer
Salary Range
Gross salary: 27,000 — 37,500 PLN/month
