Senior Software Engineer

Role Description

The Senior Software Engineer (SSE) will collaborate closely with clients and internal team members under the direction of the Development Lead to play a key role in delivering software development, cloud engineering, and support services. The SSE will ensure that the organisation maintains clear, scalable code, robust testing practices, effective support processes, and high‑quality user documentation.

This role involves architecting and developing cloud‑native solutions, administering Azure and environments, and working extensively with Databricks and latest data processing technologies It also requires supporting the evolution of a large-scale data distribution platform, delivering data via both real-time and RESTful APIs.

Strong technical capability, excellent communication, the ability to understand business requirements, and the capacity to deliver secure, reliable, and scalable solutions are essential. The role also includes contributing positively to the ongoing development of the engineering team and the broader technology function.

Responsibilities

Technology, Delivery & Architecture

• Contribute to the product roadmap, architecture, cloud strategy, and long-term technical direction.

• Design, develop, and maintain high-quality software aligned with business requirements and engineering guidelines.

• Build and operate cloud-native applications and infrastructure using Azure, and latest distributed systems patterns.

• Develop and optimise data pipelines and analytics workloads using Azure Databricks.

• Engineer real-time and batch data processing capabilities using streaming technologies.

• Implement Infrastructure-as-Code (Terraform) and deliver through CI/CD pipelines with automated testing.

Testing, Support & Operations

• Work with QA teams to define and validate test result.

• Provide application support to internal teams and clients in line with agreed SLAs.

• Administer and optimise cloud-hosted infrastructure, including observability, cost management, and security controls.

• Identify and implement service improvements across software, data, and platform components.

• Ensure compliance with organisational change, controlled releases, and documentation standards.

Collaboration, Leadership & People

• Support business process change, initiatives with technical analysis and solution design.

• Contribute to mentoring, and development of engineering team members.

• Communicate progress, risks, and technical considerations clearly to collaborators.

• Help establish and maintain engineering standards and procedures.

Technology You’ll Work With

You will work on the latest, cloud‑native data platform built primarily on Microsoft Azure, with opportunities to shape its long-term evolution. The environment supports large-scale, business-critical workloads across both real-time streaming and batch processing.

Data & Processing

• Azure Databricks, Apache Spark, Delta Lake

• Structured streaming, schema management, event-driven architectures

• Kafka and Azure Event Hubs for high-throughput data ingestion

Storage & Serving

• ADLS Gen2 and Delta tables as primary storage

• Additional tools such as Azure Data Explorer, Cosmos DB where appropriate

Languages & Tooling

• .NET, SQL, Python, Scala

• Git-based workflows, Infrastructure as Code, CI/CD, automated tests

• Observability via Datadog, Azure Monitor

Reliability, observability, and secure, automated delivery practices are core principles.

Minimum Qualifications

You bring:

• Proven experience building and operating distributed or analytics-heavy systems.

• Hands-on experience with Azure and familiarity with AWS.

• Practical experience operating Databricks for both streaming and batch workloads.

• Strong SQL skills, data modelling expertise, and performance optimisation on large datasets.

• Proven understanding of distributed systems fundamentals (fault tolerance, stateful processing, resilience patterns).

• Experience supporting high-throughput, low-latency, or data-intensive systems.

• Proficiency in .NET.

• Ability to influence technical direction and mentor engineers.

Nice to Have

• Experience with Delta Live Tables, Unity Catalog, or Lakehouse governance

• Familiarity with Flink, ADX

• Background in low‑latency, or performance-sensitive environments (e.g., finance, trading, telemetry)

Critical Success Factors

• Consistent delivery of high-quality cloud, data, and software solutions

• Strong consistency to product organisational change and engineering standards

• Production of clear test scripts, documentation, and support materials

• Effective communication within engineering and client contexts

• Solid database knowledge

• Ability to collaborate, build trust, and maintain high professional standards

Personal Attributes

• Honesty and trustworthiness

• Respect for others

• Cultural awareness and sensitivity

• Flexibility and adaptability

• Strong work ethic and accountability

• Proactive, continuous-learning demeanor

Career Stage:

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

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