Senior Full Stack Engineer (Next.js/React)
We usually respond within a week
About the team
Kiloverse is the operational force that helps ventures grow — building the systems, teams, and infrastructure that turn ideas into scalable businesses. Behind every fast-growing product, there’s a group of people who think like owners, act fast, and execute with precision.
Here, you’ll find people who want to break big in their careers — working side by side with entrepreneurs and founders to build ventures that redefine the health, wellness, beauty, or travel industries.
Get ready to
Contribute to full-stack development, owning features across the stack using React and Next.js, with a strong focus on architecture and complex business logic
Dive deep into complex domain logic, third-party integrations, and performance challenges across the stack
Take ownership, make architectural decisions, and influence how our platform evolves end-to-end
Design clean, well-documented APIs and collaborate closely with frontend engineers using React / Next.js
Optimize application performance, security, and infrastructure reliability
Collaborate with product, operations, and engineering teams to deliver impactful features
Mentor other engineers, delegate tasks, and help grow a strong, senior-level engineering team
Improve development processes, code quality, and engineering standards across the platform
We expect you to
Bring strong full-stack engineering fundamentals with a solid backend foundation (clean architecture, design patterns, testing)
Have solid experience with PHP, ideally Laravel or Symfony (or be confident you can ramp up quickly), and strong experience with React / Next.js
Be comfortable working across the stack and stepping outside a narrow role when needed
Confidently design and navigate complex business and domain logic
Write reliable, well-tested code and follow best engineering practices
Work autonomously, from system design through implementation, deployment, and optimization
Take a senior mindset: ownership, technical leadership, and proactive problem-solving
Salary
Gross salary range is 4500-6500 EUR/month.
Location
We have plenty of amazing workspaces you can choose from: our awesome headquarters in Vilnius, and super cool hub in Kaunas!
For Vilnius: 4 days onsite, 1 flexible day remote. Meanwhile, in Kaunas: onsite, hybrid, or remote options are available depending on the role.
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 €1100 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.
- Department
- Tech
- Locations
- Kaunas, Vilnius, Klaipėda, Riga, Berlin, Stockholm
- Seniority
- Senior
- Team
- Kiloverse
Dreaming big and acting fast
In 2013, we launched one product in a tiny office room with 7 people. Fast forward to today, we're a leading digital health and HealthTech company. Simply put, we’re ambitious and passionate futurists driven by unconventional ideas. Our goal is to fully revolutionize the healthcare industry. Are you in?
Already working at Kilo?
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