[Hiring] Software Engineer @Bratte

Role Description

We're a team of 27 people, with an engineering team of 10 — each engineer owning a clear focus: iOS, Android, desktop, AI. Yours will be the backend.

It’s live and serving real traffic today. You're not inheriting a blank page, and you're not signing up for maintenance: it's a working system now under pressure. You'll take shared ownership of it, harden what's there, and help decide what the next version looks like.

• Real-time communication layer between the app, our animation models, and LLM providers.
• Data layer behind companion memory and conversation state.
• Operational side — observability, alerting, and knowing what's happening before users tell us.

Joining at this stage means working directly with the founders, shaping how the company grows, and making a real impact. We value expertise, embrace initiative, and empower you to make decisions. Our decision-making is fast — you get freedom to contribute meaningfully rather than wait for approvals.

The stack

• Backend & Web: TypeScript, Node.js, Cloudflare Workers (Durable Objects, KV, AI, etc.)
• Databases: Cloudflare KV, SQL, NoSQL
• Communication: REST API, WebSockets
• Clients (context): iOS, Android, desktop (MacOS, Windows)

What you’ll do

• Share ownership of the production backend with our current backend engineer — design, deploy, monitor, and respond when it breaks.
• Scale real-time systems as traffic grows: latency, throughput, infrastructure cost.
• Build and evolve APIs, WebSockets, and the real-time communication layer between the app, our animation models, and LLM providers.
• Work with Cloudflare Workers (Durable Objects, KV, AI) to keep performance predictable under load.
• Design data storage for companion memory and conversation state — the part that makes the product feel like it remembers you.
• Strengthen how we operate: observability, alerting, incident response, and written documentation of how the system actually works.
• Work with the team to ship features end to end.

Qualifications

• 5+ years in backend development.
• You think in terms of the product, not the backlog.
• Experience running systems in production under real load — not only building them.
• Strong JavaScript + Node.js, or strong Python / Go / another modern language and readiness to work day-to-day in TypeScript and Node.
• Solid database experience (SQL, NoSQL, KV) and a feel for when the schema is the bottleneck.
• Real-time data processing: WebSockets, event-driven architectures.
• Comfortable deciding without complete information — and revisiting the decision when data arrives.
• Verbal fluency in Russian, Ukrainian, or Belarusian. English B1+.

Nice to have

• You know where the milliseconds go between a user's tap and the response, and you've cut latency in a live real-time system — not just read about it.
• You don't over-engineer, but you always keep a sudden traffic spike in mind and have a plan B ready.
• Cloudflare Workers or other edge compute.
• LLM inference infrastructure, streaming, or context/memory systems.
• Audio pipelines, or consumer products at scale.

Benefits

• Fully remote across Europe. Optional hub in Warsaw.
• 29 paid non-working days per year.
• Top-of-the-line hardware — latest MacBook or whatever you need.
• Coworking space covered in your location.
• Flexible schedule. We care about results, not hours.
• A shipped product with real users and growing numbers — your work has immediate, measurable impact.
• A small, senior team of engineers, artists, and researchers building something that doesn't exist yet.

Key traits we value

• Responsibility and Ownership: You take pride in your work, maintain high standards, and own the outcomes of your decisions.
• Proactivity and Initiative: You seek solutions, propose ideas, and take the lead on challenges.
• Focus and Consistency: You prioritize steady progress and consistent results over one-off efforts.
• Collaboration and Openness: You communicate honestly, respect your team, and thrive in an environment of mutual trust.
• Effective Communication and Problem-Solving: You articulate ideas clearly, break down complex problems into actionable steps, and keep things simple where possible.

Recruitment Process

• Introductory chat (40 min): your experience, the role, and any questions you have about us.
• Technical interview (90 min): a live coding session and a discussion of how you approach architecture and real-time systems.
• Final interview (60 min): how you work, what you want next, and whether we're a match both ways.

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