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  2. Kilo

Senior Back-End Engineer

Posted on November 23, 2025 (3 minutes ago)

About the team

Bioma – probiotic supplements designed to support gut health, energy levels, and focus by replenishing good gut bacteria.

Get ready to

  • Work with modern backend tech and help shape a scalable, secure, and reliable e-commerce platform
  • Build high-quality backend systems using PHP (Laravel or Symfony) – but we’re open to strong engineers with other backgrounds
  • Dive deep into complex domain logic, integrations, and performance challenges
  • Take ownership, make architectural decisions, and influence how our backend evolves
  • Design clean APIs and work closely with the frontend team (React/Next.js)
  • Optimize performance, security, and infrastructure reliability
  • Collaborate with product, operations, and frontend engineers
  • Mentor others, delegate tasks, and help grow our backend team
  • Improve development processes and engineering standards across the platform

We expect you to

  • Bring strong backend engineering fundamentals – clean architecture, design patterns, testing
  • Have solid experience with PHP, ideally Laravel or Symfony (or be confident you can pick them up fast)
  • Be comfortable working beyond your “exact role” and taking initiative across the stack
  • Be able to navigate and design complex business/domain logic
  • Write reliable tests and follow best engineering practices
  • Work autonomously – from system design to deployment and optimization
  • Have a curious, open-minded approach and willingness to explore better solutions, not just follow existing ones

Salary

Gross salary range is 5000 – 7000 EUR/month.

Location

Vilnius, Lithuania: 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 2200 yearly budget to fuel personal or team growth. You pick the path e2093 wee20 9ll 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 e2093 we reward those who push further. And if you bring in more great people, you get e220500 for every successful referral.
*additional conditions apply based on your residence location.

Ready to apply?

Jump to the application form and start your journey with us.