Lead C++ Observability Engineer

The Lead Observability Engineer drives the strategy, design, and hands‑on implementation of observability across all Real‑Time Collections squads. The role focuses on measuring and optimising customer experience of exchange data, embedding observability as a core engineering practice within applications and builds, and providing guidance and expert consultancy throughout the development lifecycle.

Key Responsibilities

• Lead the implementation of the Real-Time Unified Observability roadmap for Real‑Time Collections and Contributions. Laser-focused on ensuring customer experience is measurable, visible, and continuously improved.

• Hands on C++ Development in a low-latency environment

• Work hands‑on with Collections squads to embed "Observability as a Practice" throughout the software development lifecycle. Support and encourage engineers to observe their software throughout Dev, Test, PPE and Prod.

• Guide teams in building customer‑centric SLIs and insight dashboards that reflect timeliness, completeness, accuracy, and stability of market data.

• Establish repeatable GitOps/API‑driven workflows for observability assets within build pipelines, ensuring consistent deployment and versioning.

• Influence platform architecture and reliability decisions across Collections, ensuring observability considerations are baked into design early.

Requirements:

• Base technical proficiency in C++ in order to engage with full-time developers.

• Deep experience with observability engineering such as distributed tracing, and real‑time metrics pipelines.

• Excellent leadership skills: able to coach teams, influence engineering culture, and drive cross‑team alignment.

• Strong analytical mindset for diagnosing complex distributed‑system behaviours and customer impact.

• Effective communicator with the ability to simplify system performance concepts for broader stakeholders.

Preferred:

• Strong background in SLI/SLO design, especially for latency‑sensitive or market data systems

• Ability to design and deliver end‑to‑end telemetry solutions across multiple teams and services

• Skilled in cloud‑native, containerized, and Kubernetes environments

• Proficiency with API- and GitOps-based workflows, config‑as‑code, and automated telemetry promotion.

• Experience with eBPF diagnostic capabilities like tracing, network performance and app profiling.

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.

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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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