Senior Kotlin Backend Engineer - Hybrid, Production Systems

FE fundinfo; United Kingdom; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading financial data provider is seeking a Senior Kotlin Developer to take ownership of core backend systems. You will drive stability and performance across a global technology platform, leveraging your experience in Java or Kotlin, and contribute to system architecture. The role supports hybrid working and encourages technical influence in a collaborative environment where depth of learning is valued. Fluency in German is essential for stakeholder collaboration.

Qualifications

• Several years of experience as a senior backend engineer.
• Strong hands-on experience with Java or Kotlin, preferably with Spring Boot.
• Deep expertise in MongoDB or NoSQL technologies.

Responsibilities

• Own and stabilise core backend microservices.
• Optimise performance of existing services.
• Contribute to system architecture and technical decisions.
• Participate in 2nd and 3rd level support.
• Ensure high-quality delivery across backend services.
• Support ongoing operation of production systems.

Skills

Senior backend engineering experience

Java or Kotlin

Spring Boot

MongoDB or NoSQL

Algorithmic thinking

Ownership mindset

Fluency in German

Job description

A leading financial data provider is seeking a Senior Kotlin Developer to take ownership of core backend systems. You will drive stability and performance across a global technology platform, leveraging your experience in Java or Kotlin, and contribute to system architecture. The role supports hybrid working and encourages technical influence in a collaborative environment where depth of learning is valued. Fluency in German is essential for stakeholder collaboration.