Principal Kotlin Software/ Data Engineer

JR United Kingdom; London; Hybrid; GBP 100,000 - 140,000; Full time

Job summary

A leading company in the financial sector is seeking a Principal Kotlin Software/Data Engineer in London. This remote-first role involves building data-intensive systems and solving complex engineering challenges. Ideal candidates will have strong Kotlin or Java skills and experience with distributed systems. Join a high-impact team to work on mission-critical projects.

Qualifications

• Strong Kotlin or Java experience required.
• Experience with relational databases, especially Oracle.

Responsibilities

• Design and build highly concurrent, data-intensive systems.
• Work on distributed architectures, optimizing for low latency and high throughput.

Skills

Kotlin

Java

Data Architectures

Distributed Systems

Tools

Redis

Couchbase

Cassandra

Job description

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Principal Kotlin Software/ Data Engineer, london

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Client:

Source Technology

Location:

london, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

3

Posted:

16.05.2025

Expiry Date:

30.06.2025

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Job Description:

Senior/ Principal Software Engineer - Data - (Kotlin/Java)

London

Remote-first organisation, but will involve some visits to London office

£100,000-£140,000 (potential flex for exceptional candidates)

We're after an experienced Java/ Kotlin engineer who wants to solve hard technical problems, with experience in building data-intensive, high-throughput systems. This is a small, high-impact team working on a central data store supporting mission-critical platforms at a global scale.

What you'll do:

• Design and build highly concurrent, data-intensive systems.
• Work on distributed architectures, optimizing for low latency and high throughput.
• Leverage big data technologies like Redis, distributed caches, and modern data stores (e.g., Couchbase, Cassandra).
• Solve challenging engineering problems at scale, ensuring reliability and performance under heavy load.

What you'll need:

• Strong Kotlin or Java experience (Kotlin preferred).
• Background in data architectures and large-scale systems.
• Experience with relational databases (Oracle a plus, but not essential).
• Knowledge of distributed systems and scalable data architectures.

This is an exciting and absolutely mission-critical project for a tier one financial player - if you're looking to solve hard technical problems and have experience with the technologies above, apply now for a fast turnaround.