Senior AI Software Engineer (Node.js)

WE ARE LOOKING for a skilled and driven Senior Software Engineer to join our squad at Kilo Health, working on our fast-growing e-commerce brands. You’ll help build and scale the AI infrastructure behind our global health and wellness marketplace that powers millions of users worldwide. This is your chance to take ownership and build top tier, impactful AI driven products! GET READY TO * Design and build innovative AI infrastructure with security and observability in mind * Play a key role in shaping next-generation agentic AI business solutions * Provide technical leadership and inspire others through hands-on excellence * Contribute to building a world class product and engineering community WE EXPECT YOU TO * Have at least 3+ years of experience working with backend systems (preferably JS) * Have a good understanding of how infrastructure and code work together * Have proven examples of introducing improvements to the past teams and organization * Advantage: experience with building frontend, distributed systems, event-driven system design, performance optimization and monitoring SALARY Gross salary range is 5 500 - 7 000 EUR/month. LOCATION We have plenty of amazing workspaces you can choose from: our awesome headquarters in Vilnius, and super cool hubs in Kaunas, Klaipėda, and Riga! For this specific role, we are also open to candidates who would be working remotely. SPEAKING OF PERKS: Own your wellness Stay sharp and well in your own way – health insurance (after probation), on-site physiotherapist, office gym, and fitness classes keep you moving. Plus 7 extra days off, 3 for weddings, hybrid work, and the freedom to work 2 months from anywhere in the world. Boost your daily life  Every breakthrough needs a spark and our daily setup reflects that. Pet-friendly office, fresh breakfasts, hot lunches, drawers and fridges stocked with snacks and food – for a quick bite or even a team-cooked meal together. Rooftop and cellar events keep things lively, while 10 social clubs give space to dive into passions and try new things. Add a public transport card for Vilnius and Perks.lt perks for smoother days Shape your growth path Builders never stop learning. Coaching, mentorship, training, conferences, online courses, subscriptions, books – you’ve got a €1000 yearly budget to fuel personal or team growth. You pick the path – we’ll back you all the way. Drive global impact This is where ambition scales. Build impact across 30+ brands worldwide. Launch bold projects. Even step in as a co-founder – we reward those who push further. And if you bring in more great people, you get €1500 for every successful referral. *additional conditions apply based on your residence location.