Senior Manager, M&A Integration

Arm; Cambridge; Hybrid; GBP 82,000 - 110,000; Full time

Benefits offered by this job

Hybrid working

Equal opportunity employer

Job summary

Arm’s Integration Management Office (IMO) seeks a Senior Manager, M&A Integration to lead cross-functional, global programmes from planning through execution, including post-acquisition integrations and divestments.

The role requires strong programme leadership, stakeholder management, and change management in a fast-paced, ambiguous environment, with collaboration across senior leaders to deliver measurable business outcomes.

Qualifications

• Significant experience leading large-scale cross-functional programmes in a global tech environment.
• Proven track record delivering M&A integrations, divestments, or complex change initiatives.
• Strong governance, planning, risk management, and executive reporting abilities.
• Exceptional stakeholder management and communication with senior leaders.

Responsibilities

• Lead post-acquisition integrations, divestments, and business transformation programmes.
• Develop and manage programme plans, governance structures, risks, dependencies, and success measures.
• Coordinate global cross-functional teams across Engineering, People, IT, Finance, Legal, Operations, Sales, and Marketing.
• Drive Day 1 readiness, transition planning, operational continuity, and long-term value delivery.
• Establish executive governance forums and provide clear reporting and insights to senior stakeholders.
• Support strategic initiatives and cross-organisation programmes with SoftBank Group entities where required.
• Lead change management and stakeholder engagement activities to ensure successful adoption and outcomes.

Skills

M&A integration leadership

Cross-functional programme management

Stakeholder management

Executive reporting

Change management

Education

Bachelor's degree or equivalent experience

Job description

Job ID 2026-17730 Date posted 03/08/2026 Location Cambridge, United Kingdom Category Finance & Accounting

Job Overview

Arm's Integration Management Office (IMO) leads some of the company's most strategically important change initiatives, including mergers and acquisitions, divestments, organisational transformations, and enterprise-wide improvement programmes.

We are seeking a highly capable Senior Manager, M&A Integration to manage complex cross-functional programmes that enable successful business transitions while minimising operational disruption. The role will lead integration, separation, and transformation initiatives from planning through execution, partnering with senior leaders across the company to deliver measurable business outcomes.

This position requires a strong blend of programme leadership, stakeholder management, operational excellence, and change management experience. The successful candidate will be comfortable operating in highly ambiguous environments, influencing senior stakeholders, and driving alignment across diverse global teams.

Responsibilities

• Lead post-acquisition integrations, divestments, and business transformation programmes.
• Develop and manage programme plans, governance structures, risks, dependencies, and success measures.
• Coordinate global cross-functional teams across Engineering, People, IT, Finance, Legal, Operations, Sales, and Marketing.
• Drive Day 1 readiness, transition planning, operational continuity, and long-term value delivery.
• Establish executive governance forums and provide clear reporting and insights to senior stakeholders.
• Support strategic initiatives and cross-organisation programmes with SoftBank Group entities where required.
• Lead change management and stakeholder engagement activities to ensure successful adoption and outcomes.

Required Skills And Experience

• Significant experience leading large-scale, cross-functional programmes in a global technology environment.
• Proven track record delivering M&A integrations, divestments, business transformations, or complex change initiatives.
• Strong programme management skills, including governance, planning, risk management, and executive reporting.
• Exceptional stakeholder management and communication skills, with experience influencing senior leaders.
• Strong problem-solving abilities and comfort working in fast-paced, ambiguous environments.
• Bachelor's degree or equivalent experience.

Nice to Have

• Experience in the semiconductor, technology, software, or engineering sectors.
• Knowledge of post-merger integration methodologies and operating model design.
• Programme management certifications (PMP, MSP, PRINCE2, Agile, etc.).
• MBA or relevant postgraduate qualification.

In Return

You’ll have the opportunity to work on some of the company's most strategic initiatives, partnering with senior leadership to shape the future of the business while driving meaningful impact across a global organisation.

Accommodations at Arm

At Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email

Hybrid Working at Arm

Arm’s approach to hybrid working is designed to create a working environment that supports both high performance and personal wellbeing. We believe in bringing people together face to face to enable us to work at pace, whilst recognizing the value of flexibility. Within that framework, we empower groups/teams to determine their own hybrid working patterns, depending on the work and the team’s needs. Details of what this means for each role will be shared upon application. In some cases, the flexibility we can offer is limited by local legal, regulatory, tax, or other considerations, and where this is the case, we will collaborate with you to find the best solution. Please talk to us to find out more about what this could look like for you.

Equal Opportunities at Arm

Arm is an equal opportunity employer, committed to providing an environment of mutual respect where equal opportunities are available to all applicants and colleagues. We are a diverse organization of dedicated and innovative individuals, and don’t discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Salary Range

£81,500 - £110,300 per year