Backend 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. Millions of paying customers trust us, and hundreds of thousands of travelers browse Saily at any given moment.

We're not looking for someone to close tickets. We're looking for a builder — someone who has shipped products real people use, felt the pain of a 2 AM incident on something they care about, and gets a kick out of seeing a metric move because of something they built.

Our Culture: AI-native Product Engineering

• The Engineer is the builder — responsible for solving customer problems end-to-end, from idea to production
• AI Agents are the enablers — they write most of the code and handle repeatable tasks, so you maximize your impact
• Everyone makes Saily more effective — you suggest what to delegate to agents, then implement the changes
• Curiosity, learning, and sharing are everyone's job
• The customer — a traveler on a comfortable, connected, hassle-free journey — never leaves our focus
• We value growth over comfort, contribution over hierarchy, and impact over process. We give sharp people context, autonomy, and AI as their multiplier — and expect their best work in return.
• Main Responsibilities
• Own product features end-to-end: from shaping the idea with Product and Design to shipping, measuring, and iterating
• Build features supporting multi-dimensional personalization, A/B experimentation, and analytics
• Make technical decisions with a product lens — you'll know the "why" behind every "what"
• Develop and maintain a high-quality, high-performance codebase in Go
• Mentor colleagues and raise the bar on engineering best practices
• Influence your team's vision and long-range goals — your opinion on what we build matters as much as how
• Run R&D spikes when the path forward isn't obvious
• Collaborate across engineering, product, and design in a cross-functional team

You've built your own product — a side project, a startup (successful or not), an indie app, anything you took from zero to real users. We find that people who've carried a product themselves think differently: they obsess over the user, they ship, they own outcomes. If that's you, tell us about it — it matters more to us than logos on your CV

Our technical bar is high, but we’d rather help you reach it than lose a great person over it. If your mindset and technical potential make an impression, but your Go skills aren’t quite there yet, we may invite you to the GO Masterclass: fully funded access to the Three Dots Labs’ Golang training platform. Level up, come back, and interview again — we’d love to see you grow into this role!

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 privacy@nordaccount.com. Should you prefer to opt out of the automated evaluation, please submit your application directly to career@nordsec.com.