Senior Full Stack Engineer

Intersport Digital Gmbh โ€” Germany ยท Posted ~1 day ago

Senior

Skills

Full-stack development Frontend development JavaScript/TypeScript API development Backend development Performance optimization Scalable application development Event-driven systems JavaScript TypeScript Frontend frameworks APIs Event-driven architecture

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Summary

A senior full-stack engineer is wanted for a product-focused team responsible for high-impact customer discovery experiences. The role emphasizes strong frontend engineering, performance, scalability, usability, backend APIs, and event-driven architecture, with substantial ownership over technical decisions and production outcomes.

Highlights

Take end-to-end ownership in a small empowered product team, work on highly visible customer experiences, and influence architecture and technical decisions across the stack.

Description

Help Shape How Millions Of Users Discover Products Team Discover owns a core part of the customer journey at intersport.de search, navigation, category pages, filters and recommendations. Our work directly impacts how customers explore products and how the business grows. We are a small, empowered product team with end to end ownership. That means we take responsibility for what we build and how it performs in production. We are looking for a Senior Full Stack Engineer with strong frontend expertise who enjoys solving product relevant problems, working across the stack, and taking real ownership. What You Will Do Build and improve user facing experiences across search, navigation, category pages, filters, and recommendationsDevelop and maintain frontend applications with a strong focus on performance, scalability and usabilityContribute to backend services, APIs, and event driven systems where neededHelp shape technical decisions across architecture, tooling and build vs buy questionsWork closely with Product, Design, and Engineering to define and deliver impactful solutionsTake ownership from idea to production, including quality, performance and operational stability What We Are Looking For Several years of experience building and shipping complex web applicationsStrong frontend expertise with modern TypeScript based frameworksSolid full stack engineering skills and willingness to work across frontend and backendExperience with server side rendering and performance oriented web developmentGood understanding of system design, APIs, databases and cloud based architecturesProduct mindset and the ability to balance technical quality with business impactAbility to ensure observability of systems in production, including metrics, logging, tracing, and alertingExperience with backend technologies such as Kotlin / Spring Boot, event-driven systems (e.g. Kafka), and cloud environments (AWS), or strong ability to ramp up quicklyHigh level of ownership, self direction and comfort working in an autonomous teamStrong communication skills in German and English Nice to have Experience with microfrontend architecturesExperience with Kotlin, Spring Boot, Kafka, PostgreSQL, or DynamoDBExperience with AWS and infrastructure as codeExperience in ecommerce or product discovery environmentsExperience using AI tools pragmatically to improve development workflows, productivity, and code quality Our current tech stack Frontend: Preact, Vite, SSR, TypeScript, PostCSS, microfrontends Backend: Kotlin, Spring Boot, Kafka, PostgreSQL, DynamoDB Infrastructure: AWS, Pulumi, GitLab CI/CD Tooling: Datadog, Algolia, Unleash, Vitest, Playwright You do not need to match every technology in our stack. We care more about strong engineering fundamentals, curiosity, and the ability to learn.