Staff Android Engineer | Staff | Kotlin | Saily

Saily Android Engineer

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

What We Offer

Innovate with industry leaders

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

Learn & grow

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.

Work in a next-gen Cyber City office

Thrive in our bustling office, featuring ergonomic workspaces, modern meeting rooms, engaging events, and specialty coffee to fuel your day.

Hybrid work

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

Work from anywhere

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

Physical well-being

Boost your health with free-of-charge 24/7 gym access, onsite and online workouts, and consultations led by in-house Physical Well-Being experts.

Mental & emotional health

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

Premium healthcare

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

Extra days off

Enjoy additional vacation days off as you grow with us. Plus, get extra days for sick leave, special occasions, or parenting needs.

Joyful moments – special treats

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.

Company events & team-building

Experience iconic Nord Security celebrations, team-buildings, and knowledge-sharing events, nurturing bonds that fuel our success.

Workation

Embark on a legendary company getaway abroad, filled with exciting activities, live concerts, engaging workshops, and epic time together.