Agentic Product Engineer | Senior | 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 through Saily at any given moment.

To build the best product for our customers, we foster an 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 Senior Engineer who is not an AI-user

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

Comfortable operating with minimal guidance and with no initial acceptance criteria

Proven experience designing, building, and deploying AI-native tools or applications within an organization, which has seen measurable, successful adoption

Strong product mindset : focuses on problems, outcomes, and impact—not just tickets or tasks

7+ years of development experience building something real (product, system, tool, startup, side project, meaningful feature)

Strong experience with backend, ideally with Go

Tools We 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.

Own your fitness: in-house gyms, sport cards, online workouts, and personal guidance — on us.

Pack your bags for workation: experience our company-wide trip abroad to the fullest.

Work from anywhere: work from wherever keeps you in the zone.

Celebrate your milestones: birthdays, weddings, and new family members — all deserve a gift.

Parent with ease: children’s summer camps and flexibility around the schedule — because parenting never pauses.

Join the party: team building and company events people talk about for months.

Unlock Cyber City: coffee bar, open gyms, kids’ room, music room, massage chairs — our Vilnius HQ is yours to enjoy.

Kindly refer to our Privacy Notice for Recruitment Candidates for comprehensive information regarding our data handling procedures throughout recruitment processes.

We expect all candidates to provide accurate and complete information during the recruitment process. While limited use of AI tools to refine application materials is acceptable, candidates remain fully responsible for ensuring that their submissions reflect their own qualifications, skills, and experience. Any failure to do so may negatively affect participation in the recruitment process. If broader AI assistance is allowed for a particular role or stage, we’ll let you know in advance.

By submitting your application, you acknowledge that it may be processed using automated tools for evaluation purposes. As part of our recruitment process, we may use an AI-based application review tool to help assess applications based on skills and experience relevant to the role. This technology is used to support - not replace - human decision-making, and every application is ultimately reviewed by a recruiter.

If you would like more information about how AI is used in this process or wish to exercise your rights under applicable data privacy laws, please contact us at [email protected] . Should you prefer to opt out of the automated evaluation, please submit your application directly to [email protected] .