Job Description

Senior Media Buyer - Paid Advertising Specialist

Location:

Cwmbran (Office-Based)

Salary:

30,926.94 - 45,979.52 per year (DOE)

On-Target Earnings:

Up to 75,000 (base + performance bonuses)

Contract:

Full-Time | Permanent

About Us

At

Mamba Marketing(TM)

, we don't just run ads, we build full-funnel strategies that drive measurable performance. Through creative testing, mixed media modelling, and incremental experimentation, we help brands achieve sustainable growth.

As part of the

Kalnas Group

, we're backed by a fast-scaling, multi-brand organisation of 50+ professionals across marketing, creative, and technology divisions. Paid advertising is a cornerstone of our success, and this

Senior Media Buyer

role is critical to taking our performance offering to the next level.

The Role

This isn't a "set and forget" ads role, it's a

senior, strategic, and high-impact position

. You'll take ownership of paid media strategy and execution across multiple clients and platforms, blending data-driven decision-making with creative intuition.

You'll be responsible for:

Supporting the Head of Service in campaign strategy and client communication Creating and optimising performance-driven ad content Managing both large-scale and SME ad budgets across Meta, Google, and other channels Writing persuasive copy that captures attention and converts Mentoring and training junior team members Analysing campaign performance and optimising for ROI Leading onboarding and setup for new client campaigns Leveraging your expertise across

Meta, TikTok, Google, LinkedIn

, and emerging platforms
If you live and breathe performance marketing, love testing creative ideas, and thrive in fast-moving environments, this is the role for you.

What We're Looking For

3+ years

in a marketing role (agency experience preferred)

2+ years

of hands-on paid media experience with proven ROI Strong understanding of campaign strategy, copywriting, content creation, and reporting Confident communicator with clients and internal stakeholders Excellent grasp of brand tone, audience targeting, and social media trends Ability to manage multiple clients and priorities simultaneously Ambitious, proactive, and eager to progress into leadership Organised, creative, and relentlessly results-driven

Perks & Culture

We've built a culture where performance is rewarded, ideas are valued, and teamwork is celebrated.

Incentives & Bonuses

Up to

1,000 monthly performance bonus

Monthly team rewards (spa days, footgolf, escape rooms, etc.) Quarterly team dinners at top local spots Annual company holidays & senior-only retreats Annual pay reviews tied to performance

Growth & Development

Fast-track leadership opportunities for high performers Regular 1:1s with senior leadership and founder mentoring Access to training, development resources, and cross-brand collaboration within Kalnas Group

Who You'll Work With

You'll collaborate closely with the

Lead Marketing Manager

,

Head of Service

,

Senior Paid Coordinator

,

Head of Client Success

, and our wider team of creative strategists, media specialists, and developers.
This is a

cross-functional, high-visibility role,

your work will shape real outcomes, and your input will genuinely make an impact.

Ready to Join Us?

If you're an experienced marketer with a passion for paid media, a strategic mindset, and a hunger to grow in a fast-paced agency, we'd love to hear from you.

-

Apply now

or send us your portfolio and a short intro, show us your best work and what you can bring to the team.

Job Type:

Full-time

Benefits:

Casual dress Company events Company pension Mentorship & development programme Free parking & transport links Health & wellbeing programme Sick pay Relocation assistance UK visa sponsorship available

Experience:

Marketing: 2 years (required)

Work Location:

In-person (Cwmbran Office)

Job Type: Full-time

Pay: 30,926.94-45,979.52 per year

Benefits:

On-site parking
Work Location: In person