(Senior) Fullstack Engineer (TypeScript / Java-Kotlin) - Marketing Growth (m/f/x)

Job Description

You will join the Client Technology Tribe and become part of our Marketing Growth team, working at the intersection of product, engineering, and client acquisition. The team builds the features, tooling, and experimentation capabilities that enable Scalable’s Marketing teams to launch bold and innovative acquisition and engagement campaigns. In this role, you will help turn ambitious campaign ideas into scalable digital experiences. You will work on customer-facing journeys, content and conversion flows, internal growth tooling, and the integrations needed to launch, measure, and continuously improve initiatives with real business impact.

Your Responsibilities

• Build and improve high-quality web experiences that support acquisition, onboarding, engagement, and conversion goals.
• Develop features and internal tooling that enable Marketing teams to launch campaigns faster and more effectively.
• Work across the stack on frontend applications, backend services, APIs, integrations, and cloud infrastructure; partner closely with Marketing, Product, Design, and other engineering teams to deliver measurable growth outcomes.
• Contribute to experimentation, analytics, SEO, performance, and observability capabilities across growth-related surfaces; write clean, testable, maintainable, and well-documented code while treating security and reliability as first-class concerns.
• Take ownership from idea to production, helping the team ship quickly without compromising engineering quality.
• Raise the engineering bar within the team through strong technical judgment, collaboration, and continuous improvement.

Qualifications

• A university degree in Computer Science, Engineering, or a related field, or comparable practical experience.
• Strong hands‑on frontend experience with TypeScript, React, and Next.js, building polished, production‑grade customer‑facing applications.
• Solid experience with modern frontend engineering practices, including testing, component‑driven development, performance optimisation, and maintainable UI architecture.
• Practical experience with tools and frameworks such as Jest, Cypress, Webpack, design systems.
• Backend experience building and integrating production services with Java and/or Kotlin.
• Good understanding of REST APIs, GraphQL, authentication and authorisation patterns including JWT, and service‑to‑service integrations.
• Good working knowledge of AWS, Docker, Git, CI/CD, and observability/debugging in production.
• Experience delivering complex software with end‑to‑end ownership, ideally across microservices and customer‑facing platforms.
• Strong analytical thinking in both technical and product contexts, with the ability to make pragmatic trade‑offs.
• Clear, open, and concise communication skills, with professional proficiency in English.

Additional Information

• Be part of one of the fastest‑growing and most visible Fintech startups in Europe, creating innovative services that have a substantial impact on the lives of our customers.
• Work with an international, diverse, inclusive, and ever‑growing team that loves creating the best products for our clients.
• Be productive with the latest hardware and tools.
• Learn and grow by joining our in‑house knowledge sharing or career development sessions, and by spending your individual Education Budget.
• Learn and experience German culture first hand by joining our free German language classes.
• International relocation support is provided if required.
• Opportunity to work from abroad.
• Benefit from an attractive compensation package and from the company pension scheme.
• Monthly contribution of 50% for the ‘Deutschland Jobticket’.
• Say goodbye to order commissions and say hello to your complimentary subscription of Scalable Capital's PRIME+ Broker.
• Enjoy flexible and discounted sports activities with Urban Sports Club.