Senior Fullstack Engineer

CC.Talent is seeking an experienced Senior Fullstack Engineer to support a confidential client in building and scaling high-performance backend systems and personalized user experiences. This role focuses on developing scalable APIs, backend architecture, and data-driven features that support a rapidly growing social platform with over one million users across multiple countries. The ideal candidate has strong experience in Node.js, TypeScript, GraphQL, and scalable system design, and thrives in fast-paced, product-driven environments.

Our client is a fast-growing social application designed to bring people together through real-life connections. With more than 1,000,000 users across seven countries, the platform promotes meaningful interactions with the mission: Less scrolling, more living. The company operates with a compact, highly driven team focused on building a fast, intuitive, and high-performing application comparable to platforms such as Bol.com, Uber, and Booking. Performance, personalization, and user experience are at the core of everything they build.

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  Develop and maintain a scalable, high-performance backend using Node.js, TypeScript, GraphQL, and MySQL

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  Design and implement systems for personalized content such as feeds, recommendations, and timelines

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  Build and optimize scalable APIs to support growing user demand

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  Collaborate closely with frontend, design, and data teams to deliver features end-to-end

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  Improve system architecture, caching strategies, and data integrations

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  Contribute to technical decisions around scalability, performance, and the future growth of the platform

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  Ensure backend systems are reliable, maintainable, and optimized for production environments

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  At least 3 years of experience with Node.js and TypeScript

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  Strong knowledge of GraphQL and MySQL, with experience building scalable APIs

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  Understanding of systems such as recommendation engines, feeds, or timeline platforms

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  Experience with NoSQL databases, caching layers, or event-driven architectures

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  Experience with app localization for multi-region or multi-language platforms

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  Familiarity with over-the-air (OTA) app updates

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  Experience building recommendation engines, preferably using AWS Bedrock

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  Hands-on experience with Prisma or Drizzle (ORM)

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  Strong analytical and problem-solving skills with a scalable mindset

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  Familiarity with both relational and non-relational databases

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  Curious and proactive in learning new technologies and tools

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  Nice to have: experience with CI/CD, monitoring, or production environments

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  Nice to have: experience working on applications with rapid and large-scale user growth (e.g., Booking, Marktplaats, AH