Lead Software Engineer - Cloud-Native Architect (Delta Lake)

London Stock Exchange Group; Polska; On-site; PLN 265,000 - 419,000; Full time

Job summary

London Stock Exchange Group is seeking a Lead Software Engineer to define the technical direction for a focused product area. You will solve complex challenges, guide teams through design and architecture, and raise engineering standards across the platform.

You will design and deploy high‑performing distributed systems in Azure, build CI/CD pipelines, and craft API strategies while applying Data Lake/Delta patterns to guide architecture and delivery.

Qualifications

• Proven ability to design and implement complex, distributed systems at scale.
• Strong programming expertise in C#, with OO and functional patterns.
• Familiarity with Python for automation, tooling, or data workflows.

Responsibilities

• Design, develop, and deploy applications across all phases of the software lifecycle.
• Architect and evolve distributed systems in cloud environments with focus on resilience and observability.
• Build and maintain CI/CD pipelines for automated delivery and high-quality releases.
• Collaborate on API development and service-to-service communication.
• Work with modern infrastructure tooling (Azure, containers, dev containers, IaC).
• Apply expertise in Data Lake (Delta) and Change Data Feed to guide solution architecture.
• Provide hands-on leadership through code reviews and architecture discussions.
• Raise engineering quality by reducing duplication and promoting reusability.

Skills

Distributed systems design

C#

Python

Spark SQL

PostgreSQL

Azure

API design

Mentoring

Tools

CI/CD pipelines

Docker/Kubernetes

AKS

Job description

London Stock Exchange Group is seeking a Lead Software Engineer to define the technical direction for a focused product area. You will solve complex challenges, guide teams through design and architecture, and raise engineering standards across the platform.

You will design and deploy high‑performing distributed systems in Azure, build CI/CD pipelines, and craft API strategies while applying Data Lake/Delta patterns to guide architecture and delivery.