Business Development Manager

Company: DeterTech | UK & IE

Location: Portsmouth

Posted: April 24th, 2026

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At DeterTech, we are driven by a clear purpose: giving greater peace of mind to people and communities, every day.

With a team of 300 colleagues, a £50m turnover, and over 3,000 customer sites across Europe, we are an industry leader in predicting, deterring, and detecting intrusions. By combining cutting-edge technology with real intelligence, we deliver security solutions that make a measurable impact.

But we’re not stopping there. We have ambitious plans for growth, and we’re looking for driven individuals to be part of our journey. Whether it’s expanding into new customer sectors, entering new markets, launching innovative products, or exploring new distribution models, we’re creating opportunities to shape the future of security.

As we scale, we’re looking for talented individuals who want to make an impact and help shape the future of security solutions. At DeterTech, we offer more than just a job—we offer a career with purpose, development, and recognition.

What’s expected of you?

The Business Development Manager will be responsible for identifying new business opportunities and developing relationships in the field, becoming the face of DeterTech with potential clients. The successful candidate will work closely with the sales and marketing teams to develop strategies to expand the company’s customer base and increase revenue.

Key Duties Include:

Identify new business opportunities and develop strategies to increase sales and revenue.
Develop and maintain relationships with potential clients and key decision-makers.
Conduct market research to stay up-to-date with industry trends and changes.
Collaborate with the sales and marketing teams to develop marketing materials and campaigns.
Attend conferences, trade shows, and other industry events to network and promote the company.
Develop proposals, presentations, and contracts for potential clients.
Track sales data and provide regular reports to senior management.
Work closely with the product development team to understand the company’s products and services and be able to provide feedback to help improve them.
Provide excellent customer service and maintain positive relationships with clients.
Cold calls as appropriate within your market or geographic area (PO, SO, GU) to ensure a robust pipeline of opportunities.
Plan approaches and pitches.

Professional experience and qualifications:

3+ years of experience in business development, sales, or marketing.
Proven track record of developing and closing business deals.
Proven track record within B2B face-to-face sales.
Sales experience within the construction industry desirable.

Personal Attributes:

Strong communication, interpersonal, and networking skills.
Excellent presentation and proposal development skills.
Hard working, dedicated with a hunger for success.
Ability to work independently and as part of a team.
Strong analytical and problem-solving skills.
Strong organizational and time management skills.
Willing to travel as needed.

Our Values:

These three values describe what it means to work at DeterTech. Our values exist to guide us in our day-to-day work. Every decision we make, every question we ask, every interaction we have, should have our values at its heart. It’s the way do things. Living and breathing our values every day will help us to grow - individually and as an organisation - and to achieve our purpose of giving greater peace of mind to people and communities, every day.

Committed Our business is built on trust and accountability. We take pride in our work, keep our promises and care about the impact we have on our customers and each other. We are committed to delivering excellence every time, being accountable for our actions and the decisions we make.
Inclusive We collaborate to deliver the best outcomes. We work together to create a stronger, more sustainable business. We build long lasting relationships with customers, partners and each other, based on trust. Everyone is respected and we welcome diversity of ideas and backgrounds.
Ambitious We act with clear purpose for positive impact. Our purpose and goals guide our every action and decision. We continually look for ways to improve and learn from every experience, determined to get the best results, in the right way. This benefits us, our customers and ultimately the communities we serve.
25+ Days of Holiday
Company pension scheme
Employee Assistance Programme
SmartWater Product Pack
Wider Benefits Portal
Buy Holiday Scheme
Employee Recognition Programme

Seniority level

Seniority level
Mid-Senior level

Employment type

Employment type
Full-time

Job function

Job function
Sales and Business Development
Industries
Construction, Security and Investigations, and Building Construction

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