Promptwatch is building the leading GEO platform, helping businesses optimize their visibility across ChatGPT, Claude, Perplexity, and Google AI. We handle millions of clicks, citations, and visits per day - processing real-time data streams, tracking AI search patterns across 3,000+ domains, and synthesizing insights that drive decisions for thousands of companies. The technical challenges are real: ingesting and analyzing terabytes of log data, building distributed systems that prompt AI models millions of times daily, and creating real-time analytics pipelines that turn massive datasets into actionable intelligence within seconds.

As a Full-Stack Developer, you'll own entire features from database design to frontend interfaces. Ship code to production within hours, impacting thousands of businesses immediately. Work directly with the founding team to transform complex AI search data into intuitive user experiences. You'll have autonomy to choose your tools and define technical standards while solving real challenges: handling massive data volumes, building reliable distributed systems, and creating interfaces that make complex data actionable. If you thrive on optimizing performance at scale and want to see immediate impact from your work, you'll fit right in.

What You'll Do

• Owning the entire application layer (React / Next.js, Node / Fastify, data models)
• Designing and operating event queues, background jobs, and real-time APIs
• Managing Google Cloud CI / CD, container builds, backups, and cost monitoring
• Setting up logs, metrics, tracing, dashboards
• Pairing with product and design to scope features and run user tests
• Driving code reviews + testing culture

What We're Looking For

• React 19 and Next.js (pages router)
• Strong TypeScript knowledge
• Node with Fastify
• tRPC + traditional REST endpoints
• Event queues and job schedulers (SQS, pgboss, etc.)
• Postgres with Prisma or a comparable ORM
• Tailwind, Shadcn components
• Monorepo tooling (Turborepo, etc.)
• Jest or Vitest (or similar)

Nice to Have

• Experience with large amounts of data
• Data visualization
• Data analysis and analytics

Compensation

Base salary: €65,000 - €110,000

Equity: Meaningful equity stake

Perks: Great office location, team off-sites, company sports activities

Do you see yourself thriving and growing in this role? Apply now and join us in shaping the future of AI Search.