Senior International Development Manager

Location: London, UK with international travel

Contract: Permanent, Full time

Salary: £55,500 - £60,000 depending on experience

Working arrangements: Hybrid, with an expectation of three days per week in our London office

Working Hours: Monday - Friday, 37.5 hours per week

Reporting To: Deputy Director - Security & Resilience

Team: Security & Resilience

The Opportunity

TAG International is looking for a Senior International Development Manager to join our Security & Resilience team and work across our Transnational Threats portfolio. This is a varied and influential role combining programme leadership, client and partner engagement, technical oversight and business development. You will manage and support complex international programmes while helping to identify new opportunities, develop compelling solutions and strengthen TAG’s relationships and position in the market.

Our portfolio includes work to counter terrorism, prevent and counter violent extremism, address serious and organised crime, and strengthen rule-of-law and human rights-compliant systems. Projects range from short-term interventions to complex, multi-year capacity-building programmes in fragile and conflict-affected environments.

This opportunity would suit an experienced programme or portfolio manager who understands the international development, government or security sectors and enjoys working across the full programme lifecycle.

About TAG International

TAG International is a specialist international development and national security company. We design and deliver programmes that help governments, communities and institutions respond to complex security, governance and resilience challenges.

Working on behalf of UK and international government clients and multilateral organisations, including the FCDO, MOD, Home Office, NCA, US government, EU and UN bodies, our teams operate in some of the world’s most complex and fragile environments. We combine specialist technical knowledge, strong local and international partnerships, and practical delivery experience to create solutions that are responsive to context and capable of delivering lasting impact.

As a specialist organisation, we offer the opportunity to work closely with clients, partners and technical experts, contribute across the full programme lifecycle and have a meaningful influence on both our work and our continued development.

Your Role and Responsibilities

Programme and Portfolio Delivery

• Manage and oversee complex international programmes and projects, ensuring they are delivered to agreed timelines, budgets and performance standards.


• Provide day-to-day operational oversight, including contract compliance, financial management, risk management and client reporting.


• Act as a principal point of contact for clients, building trusted and constructive working relationships.


• Provide technical input, quality assurance and oversight across programme delivery.


• Lead, support or contribute to programme activities, reporting, monitoring, evaluation and lessons learned.


• Recruit, manage and coordinate technical experts, consultants and delivery partners.


• Identify and address delivery, financial, commercial and legal risks.

Business Development and Account Management

• Identify and develop new opportunities across existing and prospective clients.


• Lead or support opportunity capture, pursuits and competitive tenders.


• Develop technical approaches, methodologies, commercial offers and project budgets.


• Produce and review high-quality proposals and other technical submissions.


• Grow existing projects and client accounts, supporting the achievement of financial and impact targets.


• Develop networks of local partners and subject-matter experts to strengthen programme delivery and future proposals.


• Monitor market developments and emerging trends to help shape TAG’s services and strategic positioning.

Leadership and Collaboration

• Manage and develop team members, supporting high performance and professional growth.


• Work collaboratively across TAG to mobilise the expertise and operational support required for successful bids and delivery.


• Share learning and good practice across the organisation.


• Represent TAG professionally with clients, partners and within the wider market.


• Uphold TAG’s values and maintain the highest standards of ethical and professional conduct.

Your Experience and Skills

We are looking for someone with:

• Significant programme management or operational experience within international development, government or the security sector.


• Relevant technical knowledge of international development and transnational threats, including counter-terrorism and serious and organised crime.


• Experience of successfully delivering complex programmes in international environments.


• Experience of working with UK or other government clients and partners.


• A demonstrable record of contributing directly or indirectly to winning new work and developing client accounts.


• Experience of writing, contributing to or evaluating technical proposals for donor or government clients.


• Strong commercial and financial awareness, including experience of developing and managing project budgets.


• Excellent client, partner and stakeholder-management skills.


• The ability to lead teams, manage competing priorities and maintain quality in a fast-moving environment.


• Sound judgement and a practical, solutions-focused approach.


• Excellent written and verbal communication skills.

What We Offer

Alongside a salary of £55,500 – £60,000 depending on experience, we offer a competitive benefits package, including:

• A discretionary annual bonus of up to 10%.


• 25 days’ annual leave, plus UK bank holidays, with three days normally reserved for the Christmas closure.


• An additional day off for your birthday.


• One paid volunteering day each year.


• Hybrid working, with an expectation of three days per week in our London office.


• Private medical insurance following successful completion of probation.


• A workplace pension scheme.


• Access to our Employee Assistance Programme.


• Eyecare support.


• Opportunities to broaden your experience across programme delivery, client engagement and business development, while continuing to develop your technical knowledge, leadership capability and professional networks.

How To Apply

Applications should be received no later than Friday 11 September 2026.

We will review applications as they are received and reserve the right to close the application window early if we identify a suitable candidate. Early applications are therefore encouraged.

Applicants must have an existing right to work in the UK, as TAG is unable to provide visa sponsorship for this role.

TAG International is committed to equality of opportunity and to creating an inclusive working environment. We welcome applications from people with diverse backgrounds, identities, experiences and perspectives, and make recruitment decisions based on skills, experience and organisational requirements.

If you require any reasonable adjustments during the recruitment process, please let us know when submitting your application.