Investment Director, NSSIF

British Business Bank; London; Hybrid; GBP 200,000 +; Full time

Job summary

A UK government-backed financial institution is seeking an Investment Director for the National Security Strategic Investment Fund. This role entails leading investment strategies and managing substantial capital in innovative technologies while working in a hybrid setting. The ideal candidate will have strong venture capital and relationship management experience, particularly in challenging environments, and a grasp of national security and defence. Additional benefits include generous leave and pension contributions.

Benefits

30 days annual leave plus bank holidays

15% employer pension contribution

Flexible working arrangements

Cycle to work scheme

Healthcare cash plan

Paid voluntary days

Qualifications

• Experience in venture capital and corporate finance is crucial.
• Strong relationship management skills with external partners are essential.
• Understanding of national security and defence is a plus.

Responsibilities

• Drive NSSIF's investment strategy and manage significant investments.
• Lead investment activities including technology scouting and ecosystem development.
• Expand NSSIF's investment capabilities and manage multiple investments annually.

Skills

Venture capital

Corporate finance

Relationship management

Investment strategy development

Job description

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Investment Director, NSSIF

Application Deadline: 4 September 2025

Department: Funds 1

Employment Type: Fixed Term Contract

Location: London

Description

Location: London / Hybrid Working (expectation to attend the office 3 days per week)

Contract: Fixed Term Contract - 6 months

Hours: Full time 37.5 hours/week, flexible days/hours (Mon-Fri)

Salary: Competitive

The Role

The National Security Strategic Investment Fund (NSSIF) is the UK Government's corporate venturing arm for pioneering dual-use technologies. Its mission is to ensure the UK national security and defence community can access and adopt innovative technology at pace and scale, delivering strategic advantage and protecting the UK's security and prosperity. NSSIF's investments are overseen by the Department of Science Innovation and Technology (DSIT).

In this role, you will drive long-term national security impact by shaping and delivering NSSIF's investment strategy, leading investment activities including direct and fund-of-funds investments, technology scouting, market ecosystem development, and scaling the fund from GBP 20m to up to GBP 100m annually.

NSSIF has a proven track record of success, including significant national security impact, creation of thousands of UK jobs, and crowding in over GBP 500m private capital. Following the recent Spending Review, NSSIF plans to scale investments to GBP 330 million over four years.

The role involves managing investments mostly in early-stage and growth-stage startups, primarily in the UK, with some overseas investments aligned with Mission objectives. You will be responsible for expanding NSSIF's investment capabilities and team to manage dozens of investments annually.

The NSSIF team comprises members from NS&D, DSIT, and the British Business Bank, all committed to Mission and impact delivery. Investment themes include Quantum, Semiconductors & Advanced Compute; Space, Satellites & Future Communications; AI and Data; and Emerging Technologies including engineering biology.

Ideal candidates will have experience in venture capital, corporate finance, direct investment, and working in flexible, cross-team environments. Strong relationship management with senior external partners and stakeholders, and experience in high-profile roles, as well as understanding of national security and defence, are essential.

Please click on this Job Description for more details.

Key Benefits

• 30 days annual leave plus bank holidays, with buy/sell options
• 15% employer pension contribution
• Flexible working arrangements
• Cycle to work scheme, healthcare cash plan, Group Income Protection, and life assurance
• Paid voluntary days, maternity, paternity, adoption, and shared parental leave
• Various lifestyle benefits including retail discounts, health & wellbeing, travel, and technology offers