Agentic Product Engineer | Mid - Senior | Full-stack | 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.

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

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

• 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)

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

What We Offer

• Sharpen your edge: training, mentorship, and room to grow — always.

• Take the time you need: extra vacation days, sick days, and time off when life calls.

• Get premium healthcare: private health insurance in Lithuania and Poland — fully covered.

• Protect your peace: enjoy free subscriptions to Calm, Headspace, and Mindletic, and our own resilience and mindfulness trainings.