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# Senior Backend Engineer (Kotlin) - €350 - €380 A Day

- **Company:** Forsyth Barnes
- **Location:** El Lloar, Spain
- **Salary:** €91,000.0 - €98,800.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Backend, Kotlin, Kubernetes, Front End Software Development, Elk Stack
- **Published:** September 10, 2026
- **Apply:** https://www.buscojobs.com.es/senior-backend-engineer-kotlin-%E2%82%AC-350-%E2%82%AC-380-a-day-en-lloa-ID-370016346

## About the Role

You'll play a key role in shaping core financial products, supporting a rapidly growing user base, and delivering high-quality solutions in a fast-paced environment.Design, develop, deploy, and maintain backend services aligned with team and business goalsBackend: Frontend: React.JsMobile: Kotlin, SwiftInfrastructure: Kubernetes on AWSDatabase: PostgreSQLKafka, ELK stack, and other modern toolsCash flow management and bookkeeping toolsEach team typically includes 6-8 backend engineers and owns its product scope end to end.Quality-oriented: Strong advocate for testing, clean code, and constructive code reviewsLanguage: Fluent in EnglishA remote or onsite technical exercise to showcase your skills and experience what it's like to work with the team

## Description

Senior Backend Developer Contract Role: Day Rate: €350-€380 per day8-12 month contractYou'll join a large, distributed backend engineering community and work within cross-functional teams alongside product managers, frontend, and mobile engineers.You'll play a key role in shaping core financial products, supporting a rapidly growing user base, and delivering high-quality solutions in a fast-paced environment.Design, develop, deploy, and maintain backend services aligned with team and business goalsBackend: Frontend: React.JsMobile: Kotlin, SwiftInfrastructure: Kubernetes on AWSDatabase: PostgreSQLKafka, ELK stack, and other modern toolsCash flow management and bookkeeping toolsEach team typically includes 6-8 backend engineers and owns its product scope end to end.Quality-oriented: Strong advocate for testing, clean code, and constructive code reviewsLanguage: Fluent in EnglishA remote or onsite technical exercise to showcase your skills and experience what it's like to work with the team


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- [Why Kotlin is the better Java and how you can start using it](https://www.wearedevelopers.com/videos/661-why-kotlin-is-the-better-java-and-how-you-can-start-using-it)

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