Backend Engineer | Mid-Senior | Transition to Go | Saily

Nord Security

United States

November 04, 2025

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Backend Engineer | Mid-Senior | Transition to Go | Saily

Vilnius / Kaunas
Saily – Backend - Saily /
Full Time /
Hybrid
At , we’re removing the hassle from getting secure data plans while traveling.

No roaming charges, no plastic SIM cards. Just fast, secure mobile data in 200+ countries. Join the team behind Lonely Planet’s #1 eSIM—built for explorers, powered by NordVPN.

Your impact? Helping people stay securely connected, wherever they go.

Main Responsibilities

    • Enhancing the Saily product by developing and maintaining new features.
    • Create features to support layers of multi-dimensional personalization, A/B experimentation, and analytics.
    • Develop and maintain a high-quality codebase.
    • Seek to improve code and performance constantly.
    • Mentor colleagues on development best practices & provide technical guidance.
    • Exercise influence on the overall vision and long-range goals of your team.
    • Perform R&D operations whenever required.
    • Work as part of a cross-functional team and help to ensure smooth communication between all team members.
    • Collaborate with engineering, product, and design professionals from other teams.

    • Please keep in mind that this position requires office attendance 3 times a week!

Core Requirements

    • Over 4 years of experience in backend development.
    • Preferably with a background in Python, PHP, or Ruby languages.
    • System design is nothing new to you, and you know what patterns to use, when, and why.
    • Previous experience in working with K8s and microservice architecture is a plus.
    • Previous experience with SQL (MySQL, PostgreSQL) and NoSQL (Cassandra, Redis) solutions.
    • Previous experience with Kafka.
    • Passionate about building APIs that are easy to use and simple to understand.
    • A collaborative mindset where you love to discuss, rethink, and redesign your ideas that create shared success within your team and the company.

Tools You Will Use

    • Go.
    • MySQL.
    • Kafka.
    • Kubernetes.
    • AWS.
    • Redis.

Salary Range

    • Gross Salary - 3500 - 7200 EUR / month
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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