Staff Android Engineer | Staff | Kotlin | Saily

Staff Android Engineer | Staff | Kotlin | Saily

Full Time

hybrid

Mobile

Vilnius / Kaunas

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 the architectural direction of Saily for Android, spot existing and future bottlenecks in the codebase, build pipeline, and development workflow before they slow the team down.
Drive decisions on modularization, dependency management and platform-level patterns (navigation, DI, networking, etc.) that keep the codebase scalable as the team and product grow.
Continuously identify, prioritize and plan reduction of technical debt. Make the cost of inaction visible to Product Owners so it gets scheduled, not just acknowledged.
Champion app startup time, animation smoothness, memory/battery usage and crash-free rates. Establish performance budgets and automated guardrails.
Elevate testing practices (unit, integration, UI), prioritize security and work with QA Team to ensure Saily consistently meets a high quality standard.
Coordinate with all the necessary teams to align on priorities, unblock delivery and ensure mobile needs are represented in platform-wide decisions.
Hands-on contribution to Saily Android development: building features, interacting with backend REST APIs (providing feedback based on mobile-specific needs) and collaborating with Web, Backend, and UX teams to ship new functionality and raise the bar on existing features.
Debug and resolve issues surfaced by users, internal testing, and production monitoring.
Mentor Android engineers and help QA Team through code reviews, pairing, architecture discussions and knowledge-sharing; help individuals grow technically without formal management authority.
Champion AI usage across the Android platform and beyond. Evaluate and integrate AI tooling into the Android development workflow. Prepare devtools, project structure and documentation for effective agentic coding.
Evaluate cutting-edge tools, libraries, and Android platform changes. Recommend adoption of new tools when the ROI is clear.

Core competencies:

5+ years of professional Android development experience, with deep expertise in Kotlin, modern Android architecture (Compose, coroutines, multi-module projects) and the Android platform internals.
Proven records of driving architecture decisions, leading large cross-cutting initiatives and raising quality across a team or organization without relying on positional authority.
Proven ability to identify systemic issues (build times, flaky tests, architectural coupling, slow release cycles) and drive pragmatic solutions.
Ability to translate technical complexity for non-technical and cross-platform stakeholders (POs, designers, backend, web) and build alignment around technical direction.
Actively unblock others, break down complex problems, foster collaborative relationships across teams and platforms and use failure as a blameless learning opportunity.
Proficiency with CI/CD pipelines, release automation, and mobile-specific observability/monitoring.

Nice to have:

Experience scaling a mobile codebase and team in a fast-paced startup environment. (fast-paced startup is the main subject here)
Contributions to the broader Android community (open source, talks, writing).

Salary Range

5,900-7,500 EUR gross/month

Perks we offer

Our global mission fuels our drive. But when you need that extra push - here’s a list of things to look forward to.

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Vilnius / Kaunas

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