About Saily
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 of travelers browsing our service at any given moment.
Engineering Culture Highlights
- The Engineer is the builder, 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, helping Engineers maximize 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 comfort, a connected, hassle‑free journey, is never lost from focus
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, with 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
Benefits
- Innovate with industry leaders: Work alongside global experts to build world‑leading cybersecurity tools, impacting millions of users worldwide.
- Learn & grow: Boost your skills via extensive training programs (online and offline) and other resources. Benefit from mentorship and career‑switch opportunities.
- Hybrid work: Enjoy flexibility with 3 office days and 2 days working from home.
- Work from anywhere: Choose any location when you need a change of scenery.
- Physical well‑being: Access online workouts led by experts and a Multisport card for gyms, swimming pools, and fitness classes.
- Mental & emotional health: Free psychologist consultations, dedicated mental health events, and premium access to wellness apps.
- Premium healthcare: Private health insurance.
- Joyful moments – special treats: Celebrate life’s big moments with gifts on birthdays, anniversaries, and other major events.
- Company events & team‑building: Iconic celebrations, team‑buildings, and knowledge‑sharing events.
- Workation: A legendary company getaway abroad with exciting activities, live concerts, workshops, and quality time together.