WhyHireWrong?

Full-stack Engineer

• Build and ship full-stack features using Java, Spring Boot, and Angular
• Take features from requirements through design, implementation, testing, and release
• Write and maintain SQL queries, schema changes, and Oracle database logic
• Build REST APIs and integrate with messaging systems using JMS
• Maintain and extend GitLab and Jenkins CI/CD pipelines
• Fix broken builds and deployment issues
• Use SonarQube to identify and resolve code-quality, security, and maintainability issues
• Write automated tests and review other engineers' code
• Estimate work, flag delivery risks, and communicate progress to product owners, QA, business analysts, and operations
• Mentor engineers and share technical knowledge

Full Stack Engineer

Growth Marketing

• Own the full Polish P&L, including revenue targets, booking volume, CAC, and channel payback periods
• Own allocation decisions for a six-figure performance marketing budget and manage spend weekly
• Report directly to leadership on ROI by channel
• Set the hiring bar, manage performance, develop people, and execute campaigns personally
• Decide which channels to scale or eliminate and sequence investment across a 12-month growth roadmap
• Track competitors and identify gaps in the Polish OTA market
• Translate market intelligence into acquisition strategy

Head of Growth, Online Travel Agency

• Own the product UI/UX while working directly with the founder
• Build and ship SvelteKit applications end to end, including routing, load functions, server-side rendering, form actions, and client-side state management
• Write strictly typed component-level TypeScript
• Implement responsive and accessible UI with Tailwind CSS, including custom design systems and component variants
• Build and expose REST or RPC endpoints in Fastify with schema-based request validation, error handling, and authentication middleware
• Design Postgres tables, write and roll back migrations, and write raw SQL or use Drizzle, Kysely, or Prisma for non-trivial queries
• Own frontend performance, including bundle size, hydration cost, load waterfalls, and Core Web Vitals
• Set up or maintain CI/CD for a Node.js/SvelteKit application: build, lint, type-check, and deploy
• Debug production issues across the full stack without handing off to a backend specialist
• Shape a pre-launch startup from zero alongside the founder

Full Stack Engineer

Head of Growth, Online Travel Agency

Founding Full-Stack Engineer