# Lead Software Engineer

**Company**: London Stock Exchange Group (LSEG)
**Experience**: senior
**Job type**: full-time
**Salary**: 265,000 zł - 419,000 zł
**Category**: Engineering
**Industry**: Finance

**Apply**: https://lseg.wd3.myworkdayjobs.com/en-US/Careers/job/POL-Gdynia-3T-Office-Park-Tower-C/Lead-Software-Engineer_R0115746-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_6031c1e6-3ab

## Description

As a Lead Software Engineer, you will define and drive the technical direction within a focused product or platform area. You will solve complex engineering challenges, guide others through code, design and architecture, and raise engineering standards across the team. This role blends deep hands-on technical delivery with technical leadership, mentoring, and shaping the long-term quality and resilience of our systems.

**Responsibilities:**

- Design, develop, and deploy applications across all phases of the software lifecycle, ensuring high performance, security, and scalability.

- Architect and evolve distributed systems operating in cloud environments, with a focus on resilience, observability, and efficient operations.

- Build and maintain CI/CD pipelines, ensuring smooth, automated delivery and high-quality releases.

- Collaborate on API development, integration patterns, and service-to-service communication.

- Work with modern infrastructure tooling (Azure, containers, dev containers, IaC) to support fast, reliable deployments.

- Apply expertise in Data Lake (ideally Delta), Change Data Feed, mirroring, AKS, events, and Microsoft Fabric to guide solution architecture and delivery.

- Provide hands-on leadership, supporting engineers through code reviews, design walkthroughs, and architectural discussions.

- Raise engineering quality by influencing best practices, improving reusability, and reducing duplication across the platform.

**Requirements:**

- Proven ability to design and implement complex, distributed systems operating at scale.

- Strong programming expertise in C#, with the ability to work comfortably with object-oriented and functional patterns.

- Familiarity with Python as a secondary language for automation, tooling, or data workflows.

- Hands-on capability with Spark SQL, PostgreSQL, and core data-engineering patterns.

- Expertise with Microsoft Azure, modern cloud infrastructure, and dev-container-based workflows.

- Strong understanding of API design, integration patterns, and secure communication between services.

- Ability to apply domain knowledge to guide team-level technical decisions, improve architecture, and drive consistency.

**Benefits:**

- Competitive compensation and benefits package

- Anticipated annual gross base salary for this position is between 265,000 zł - 419,000 zł

- Eligible for Annual Bonus Plan

- LSEG Benefits program, including healthcare, retirement planning, paid volunteering days, and wellbeing initiatives

## Skills

### Required
- C#
- Python
- Spark SQL
- PostgreSQL
- Microsoft Azure
- Data Lake
- Change Data Feed
- mirroring
- AKS
- events
- Microsoft Fabric

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Source: [Apply at lseg.wd3.myworkdayjobs.com](https://lseg.wd3.myworkdayjobs.com/en-US/Careers/job/POL-Gdynia-3T-Office-Park-Tower-C/Lead-Software-Engineer_R0115746-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)