Brantum | Software & Marketing Agency

B2B SaaS PLG

Execution

Full-stack PLG execution — custom platform build combined with a content-led SEO strategy that achieved 340% organic traffic growth and £2M ARR in 18 months.

Project Details

This B2B SaaS client came to Brantum at pre-seed stage with a validated concept, a small engineering team, and zero organic presence. Their challenge was twofold: they needed a scalable product built quickly, and they needed to acquire users without burning their limited runway on expensive paid acquisition. Brantum was engaged to solve both problems simultaneously — one team, one roadmap, one set of KPIs.

We began with a two-week Discovery Sprint that mapped their ICP, defined the core value loop, assessed their existing codebase, and produced a phased product and marketing roadmap. The product was built in Next.js and Node.js with a PostgreSQL backend, multi-tenant architecture, and PLG mechanics — freemium tier, in-product referral loop, and activation event tracking — baked in from the first sprint. In parallel, the SEO strategy targeted the commercial keywords their ICP was searching, with a content architecture designed to convert organic traffic to free trial sign-ups.

DELIVERABLES

INDUSTRY

Project Research

Pre-engagement research identified three critical insights. First, the client's ICP — heads of operations at 50–500 person B2B companies — were actively searching for their category but finding only enterprise software priced out of their range. Second, organic search was an untapped channel: no direct competitor had a coherent content strategy targeting the long-tail keywords their ICP used during research and evaluation. Third, the product's natural viral coefficient — a feature that generated shareable outputs — made a referral loop viable from the very first release.

These insights shaped every decision: the product architecture prioritised the shareable output feature in sprint one, the content strategy targeted the research-phase keywords competitor content was missing, and the pricing model was designed with a freemium tier that gave the referral loop something to spread. Research was not a phase we completed and moved on from — it informed sprint planning throughout the engagement.

Project Results

Eighteen months after engagement start, the client had achieved £2M ARR, 340% organic traffic growth, and a customer acquisition cost 60% below their original projections. The product was live, stable, and scaling — with a content library of 80+ articles ranking for over 1,200 keywords and a PLG referral loop driving 31% of new sign-ups without paid spend. The freemium tier had converted at 18% to paid, and the average customer LTV was tracking at 4.2x CAC.

The board was able to use these metrics to raise a Seed round at a valuation significantly above the pre-product benchmark. The Brantum engagement was cited in the investor deck as the primary driver of traction — a result we are proud of and that reflects what is possible when software and marketing are genuinely aligned.

Testimonials

What Our
Clients Say

Brantum is the only agency we've found that truly understands both sides. Our engineers love working with them because they speak tech. Our CMO loves them because they drive results.

Sarah K.

CTO, Series A SaaS Startup

We hired three agencies before Brantum. What took six months of back-and-forth between dev and marketing now gets done in six weeks by one team who actually communicates.

James T.

Founder, B2B Platform

Page 5 to position 1 for our core keywords in 4 months — and they shipped our entire v2 product at the same time. One team doing both is a genuine superpower.

Alex R.

CEO, FinTech Startup