Senior Real-Time Data Platform Engineer

Morningstar; Greater London; Hybrid; GBP 68,000 - 95,000; Full time

Job summary

Morningstar in Greater London seeks a Senior Software Engineer to build and operate a real-time data platform that powers the business. You will handle a distributed, event-driven system processing billions of market data messages daily, ensuring reliability at scale.

You’ll design and implement scalable data processing with Flink and Kafka, using Java or .NET, while emphasizing observability, cost efficiency, and production readiness. The role features a hybrid work model in London.

Qualifications

• Experience in building distributed, low-latency systems.
• Proficiency with event-driven architectures and streaming data.
• Strong coding skills in Java or .NET and real-time data processing.
• Ability to design for observability, monitoring, and reliability.

Responsibilities

• Design and build scalable, real-time data processing systems using Flink, Kafka.
• Develop high-quality code for data processing and APIs in Java/.NET.
• Lead system design with end-to-end ownership from development to production.
• Build production-grade systems with strong observability and operational excellence.
• Collaborate with AWS, Terraform, and CI/CD tooling to ship reliably.

Skills

Distributed systems

Event-driven

Apache Flink

Kafka

.NET or Java

Observability

Tools

Apache Flink

Kafka

Terraform

Harness

AWS

Job description

Morningstar in Greater London seeks a Senior Software Engineer to build and operate a real-time data platform that powers the business. You will handle a distributed, event-driven system processing billions of market data messages daily, ensuring reliability at scale.

You’ll design and implement scalable data processing with Flink and Kafka, using Java or .NET, while emphasizing observability, cost efficiency, and production readiness. The role features a hybrid work model in London.