Backend Engineer
PLN 24,000 – PLN 33,500 / mth base salary
Posted 7 Oct 2026
Advertised as “Backend Engineer | Senior | Go | Product & Startup Experience | Saily”
BranchFactor Summary
The original posting with the fluff stripped out
- Management level
- Individual contributor
- Employment
- Hybrid
- Contract
- Full-time
| Base salary | PLN 24,000 – PLN 33,500 / mth |
|---|
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
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The Engineer is the builder — responsible for solving customer problems end-to-end, from idea to production
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AI Agents are the enablers — they write most of the code and handle repeatable tasks, so you maximize your impact
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Everyone makes Saily more effective — you suggest what to delegate to agents, then implement the changes
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Curiosity, learning, and sharing are everyone's job
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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
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Own product features end-to-end: from shaping the idea with Product and Design to shipping, measuring, and iterating
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Build features supporting multi-dimensional personalization, A/B experimentation, and analytics
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Make technical decisions with a product lens — you'll know the "why" behind every "what"
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Develop and maintain a high-quality, high-performance codebase in Go
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Mentor colleagues and raise the bar on engineering best practices
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Influence your team's vision and long-range goals — your opinion on what we build matters as much as how
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Run R&D spikes when the path forward isn't obvious
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Collaborate across engineering, product, and design in a cross-functional team
Requirements
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5+ years of backend development experience, with strong skills in Python, PHP, Ruby, or similar — and readiness to work in Go daily