Senior Fullstack Engineer

Why Holo?

Small businesses shouldn’t need a full marketing team to look and sound like one. That’s what we’re building Holo for. Holo learns a business through its Brand DNA, then turns that understanding into marketing that actually fits - across social, ads, emails and campaigns.

25K users, 3M pieces of content, and counting. Built by a team with roots in performance marketing, agency growth, B2B SaaS, engineering and UX, we’re now bringing the whole marketing journey -create, distribute, analyze, automate - into one AI platform.

You’ll join a team of 8 developers, get real ownership from day one, and build things that go straight into the hands of thousands of users.

What you'll own

• Build features and services end to end - from first idea to production
• Take real product problems, shape the technical solution and own the outcome
• Build new systems from scratch and scale them as Holo grows
• Work across the stack, with plenty of complex backend problems to get into
• Build AI-powered features where models and agents are part of the actual product, not a side experiment
• Make decisions that directly shape our product and engineering foundations
• Ship fast, see how real users respond, iterate, repeat
• Use AI heavily to build faster, experiment more and push what a small engineering team can do

What we're looking for

Senior full-stack engineer with a strong backend focus.

• Experience owning services end to end, including frontend, backend, deployment, and production operations
• Track record of building services from scratch and scaling them as usage grows
• Experience running reliable systems under high traffic and load
• Experience in startups or other fast-moving companies is preferred
• Next.js, Node.js, and TypeScript experience is a plus, but not required. Strong engineers from Go, .NET, or other backgrounds are welcome
• Comfortable using AI extensively in day-to-day engineering work

Our stack

TypeScript, Python, Next.js, Node.js, PostgreSQL, Redis and Temporal; AWS, Google Cloud / Vertex AI, Kubernetes, Docker, Fly.io and Vercel for infrastructure; GitHub Actions, Sentry, Grafana / Prometheus, PostHog and Langfuse - with AI models and agents central to what we build.

How we work

• High ownership, low bureaucracy. Make the call, run the experiment, own what happens.
• Build in the open. Share context, challenge ideas, let the best one win.
• High standards, low ego. We care deeply about the work, not about being right.

Life at Holo

• Join early, shape how this thing grows
• We spend on great tools and on you leveling up
• Flexibility & trust - we care about the work you do, not looking busy
• Offsites lunch on us
• PlayStation, a massage chair and unlimited sūrelis. Obviously.

Salary: 7,000-8,500€/month gross, depending on experience. We’re always open to discuss it.

Location: Lithuania - building locally, thinking globally.