Agentic Mobile Engineer | Senior | IOS | Android | 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 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.

• 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

• 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

• Proven experience building full-stack features across mobile or web applications (frontend + backend)

• Backend: Go, MySQL, Kafka, Docker, Kubernetes, AWS, Redis
• Frontend: Next.js, React.js, Type Script, Graph
  
  QL, Tailwind CSS, Cloudflare Workers
• IOS:Swift
  
  UI, Xcode, Combine, SPM, MVVM Architecture
• Android:Kotlin, Android Studio, Hilt, Coroutines, Jetpack Compose, MVVM Architecture
• AI tools: Claude Code, OpenAI Codex, Open Code, Cursor with Composer

• Gross salary: 27,000 — 37,500 PLN/month

Work alongside global experts to build world-leading cybersecurity tools, impacting millions of users around the world.

Boost your skills via our extensive training programs (online and offline) & other resources. Benefit from mentorship and career-switch opportunities to grow within the company.

Enjoy the flexibility with 3 office days and working from home for the remaining 2.

Recharge with a change of scenery – choose work from any location when you feel a need to power your creativity and drive.

Fuel your active lifestyle with online workouts led by our Physical Well-Being experts. Unlock a variety of sports and wellness facilities, like gyms, swimming pools, and fitness classes, with the Multisport card.

Nurture your mind with free psychologist consultations, dedicated mental health events, and premium access to top-rated wellness apps like Calm, Headspace, and Mindletic.

Receive private health insurance giving you peace of mind for your health needs.

Celebrate life’s big moments with special gifts from us on your birthday, anniversary, and other major events, such as weddings or the arrival of a new family member.

Experience iconic Nord Security celebrations, team-buildings, and…