Senior Software Engineer, Fullstack - (Global Search, Consumer Discovery)

Requirements

• Fluent Agentic Tooling: You are highly fluent in using agentic AI tools and autonomous development workflows (e.g., Cursor, Copilot, or equivalent AI-assisted platforms) to accelerate engineering execution, automate repetitive tasks, and optimize software delivery without compromising on code craft.
• Workflow Automation Mindset: A proactive drive to automate aspects of the software development lifecycle (SDLC) to help the team move at a rapid, high-impact pace.
• TypeScript & React Mastery: Strong command of TypeScript and React, with deep comfort handling typed component trees, state management (we use MobX), and CSS-in-JS. You think carefully about component API design, accessibility, and testability.
• Go Backend Confidence: Proven experience building and owning production-grade backend services in Go, specifically handling stateful APIs, streaming contracts, and gRPC integration with upstream services.
• Fullstack Delivery: A track record of shipping client-facing surfaces or SDKs from design to production, taking absolute accountability for both sides of the stack.
• Product-Driven Execution: Strong product instinct; you shape interaction patterns based on user signals rather than waiting for a rigid specification, moving fast to validate core assumptions.
• Strategic AI Leverage: Ability to utilize AI-assisted development tools strategically, knowing exactly when AI accelerates velocity versus when deep, hands-on critical thinking is required.
• Clear Communication: Excellent written and verbal communication skills in English.

Nice to Haves

• Data & Search Infrastructure: Familiarity with search/recommendation systems, event streaming, and near-real-time data pipelines.
• Mobile Ecosystem Empathy: Experience with Swift or Kotlin, helping smooth over collaboration with mobile teams during webview integration.

What You'll Be Doing

• Conversational UX Innovation: Design, build, and own the conversational search web app—including the chat interface, query refinement chips, natural language nudges, and result rendering—delivered seamlessly inside our consumer mobile apps.
• High-Performance Backend Operations: Build and operate the backend service powering the experience, managing per-conversation state, upstream search engine integration, and streaming responses to the client.
• API Contract Stewardship: Define and maintain the API contract between the web client and the backend service, optimizing streaming protocols, interaction event schemas, and session state.
• Surface Instrumentation & Quality: Instrument the client surface to capture interaction events, refinement choices, and search outcomes, feeding live data into continuous evaluation and rapid iteration cycles.
• Cross-Functional Collaboration: Partner closely with mobile platform teams on webview integration edge cases and collaborate with Product to shape the conversational UX based directly on user signals.
• Architectural Thinking & Mentoring: Contribute to critical choices on where logic lives (client vs. server), advocate for the right trade-offs, and coach team members on engineering best practices and strategic AI usage.

Perks and Benefits

• Make the most of our hybrid working model and join the team for face-to-face connection and collaboration in our beautiful Berlin campus 2 days a week
• We offer 27 days holiday with an extra day on 2nd and 3rd year of service
• We will support you in developing yourself and your career growth opportunities: 1.000 € Educational Budget, Language Courses, Parental Support and access to the Udemy Business platform to explore a variety of online courses.
• Get moving and release those wonderful, mind-boosting endorphins: Health Checkups, Meditation & Gym.
• Cash. Dough. Cheddar. Whatever you call it, we’ll help you with it: Employee Share Purchase Plan, Sabbatical Bank, Public Transportation Ticket Discount, Life & Accident Insurance, Corporate Pension Plan
• The power of getting together over some food is unrivaled. Here are a few ways to help you do that. All the yum: Digital Meal Vouchers and Food Vouchers.