Senior Manager Integration in London

Senior Manager, Integration

About Group Corporate Development and Integration Management at LSEG

The Group Corporate Development and Integration Management team partners closely with the CEO, CFO, and Executive Committee (ExCo) to shape LSEG’s corporate strategy and drive its inorganic growth agenda.

Over the years, the team has played a central role in delivering LSEG’s M&A strategy—executing industry-defining transactions that have transformed both the Group and the broader financial markets. These include:

• The $27bn acquisition of Refinitiv, a landmark deal that reshaped LSEG’s data and analytics capabilities.

• Our transformative strategic partnership with Microsoft, accelerating product innovation for the industry.

• The recently announced Post Trade Solutions partnership with leading investment banks, rapidly growing our capabilities in our Markets division.

• Complex divestitures such as Borsa Italiana and Beta+, implemented to streamline and refocus the Group’s portfolio.

• Strategic bolt-on acquisitions including Acadia, GDC, TORA, and Quantile, which have strengthened our capabilities across data, risk, and post-trade services.

These transactions have not only advanced LSEG’s strategic priorities and growth ambitions—they have also redefined the competitive landscape of our industry. As LSEG and the industry continues to transform, we anticipate more M&A activity and the team continues to work in close partnership with the CEO, CFO, and ExCo to develop and implement the Group’s long-term strategy.

Role purpose

We are seeking a high-performing and collaborative leader to join the team as an Integration Senior Manager. The Senior Manager, Integration Management plays a key role in delivering successful M&A integration outcomes across LSEG’s strategic transactions. Working closely with senior partners across the Group, this role supports the planning and execution of integrations to ensure alignment with deal objectives and delivery of targeted value.

You will be accountable for the successful delivery of integration outcomes across LSEG’s strategic transactions, including mergers, acquisitions, divestitures, and partnerships. This role will ensure that integration programs are aligned with corporate strategy, deliver expected alignments, and support long-term value creation. The Integration Senior Manager will work cross-functionally with senior partners across business units, technology, operations, finance, HR, and legal to drive seamless execution and cultural alignment.

This role partners with colleagues across a broad range of roles and seniority levels in the Group. Within the Group Corporate Development team, you will be a senior leader and be responsible for developing and supporting the team’s talent, resources and culture.

To be successful in this role, you should have excellent project management skills and substantial experience from M&A integration, an ability to be commercial and pragmatic, and a strong ability to build and maintain high quality relationships with executive partners.

Key responsibilities

• Lead day-to-day integration planning and execution across multiple M&A transactions

• Support development of integration plans, governance structures, and success metrics

• Drive delivery across cost, revenue, and operational workstreams

• Partner with colleagues to coordinate integration and resolve issues

• Manage external advisors and internal workstream leads

• Support governance forums by preparing materials and tracking actions

• Monitor progress, risks, and dependencies and raise where required

• Contribute to change management and cultural alignment

• Develop integration playbooks and guidelines

• Mentor junior team members

Key skills and experience

• Proven experience supporting complex, global M&A integrations in financial services, technology, or a similarly regulated industry. Ideally experience both from corporate and advisory roles.

• Strong commercial foresight and a pragmatic, outcome-oriented mentality.

• Exceptional relationship-building a partner management skills, with the ability to influence at senior levels.

• Excellent verbal and written communications skills with experience of preparing and delivering executive briefings and reports

• A collaborative working style and a track record of contributing to high-performing teams.

• Strategic thinking, analytical rigor, and comfort operating in fast-paced, ambiguous environments.

• Work towards excellence while leading with trust, openness, inclusivity and humility.

• Ability to influence executives and partners with insight and respect, and an ability to navigate a matrix organisation to bring the right expertise and diversity of perspectives together to help influence decision making

MBA or Master’s degree or equivalent experience; Professional qualification preferred (e.g. CFA, CA, ACA).

Career Stage:

Manager

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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