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Digital Marketing Manager & Growth Engine

Every channel, one team — turning spend into measurable pipeline & revenue.

The engine's front end: paid media and owned email running as one system. We plan, build and manage demand across every major channel, then convert and nurture it — accountable to pipeline and ROAS, never vanity clicks.

Sentry's Digital Marketing Manager service is a fully managed marketing team that runs your paid media and your owned email as one system rather than two, planned and measured against pipeline and ROAS instead of clicks.

Digital Marketing Manager & Growth Engine — service sheet A one-page PDF: what it is, the value it creates, and the outcomes.
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What Digital Marketing Manager & Growth Engine delivers

Demand, end to end

Generate and convert demand across paid and owned channels, then align the whole revenue system around it.

Accountable to pipeline

One team, one dashboard, one number that matters — measured on revenue, not clicks.

Paid + owned as one

Acquire with paid media, compound with owned email — feeding the same pipeline.

Conversion, not just traffic

Performance-led conversion rate optimisation: the page arrives fast because of how it is built, so more of the demand you already pay for converts.

The full engine stack — every core service

The Growth Engine runs every core service as one connected system, always measured and owned. The business-specific platforms below are switched on only when your goals need them.

Discovery & Value Engineering

Google FormsGoogle Sheets

Marketing & Paid Media

Google AdsMeta AdsLinkedIn AdsTikTok AdsMicrosoft Ads

Email & Lifecycle

MailchimpKlaviyoCustomer.ioSendGridResendMailjetMailgun

Voice & Conversational AI

ElevenLabsDeepgramTwilioTwilio FlexTwilio VerifyTwilio Programmable MessagingTwilio VoiceTwilio FunctionsTwilio Studio3CXAsteriskPipecatRetell AI

AI & LLM

OpenAIGPTCodexAnthropic ClaudeCoworkCursorGeminiKimi K3DeepSeekGrokPerplexityVertex AILangChainLlamaIndexPinecone

Automation & Integration

Make.comn8nZapier

Cloud & Infrastructure

AWSGCPAzureCloudflareCloudflare Workers AIDigitalOceanSupabaseDockerTerraformInfisicalAWS LambdaGoogle Cloud FunctionsApache OpenWhisk

Data Warehouse

BigQuerySnowflakeDatabricksKeboola

Business Intelligence & Data Apps

Power BITableauLookerSupersetRetoolPlotlyAirtable

CRM & RevOps

HubSpotSalesforceZohoDynamics 365ApolloClayStripeXero

Personalised to your business — switched on as needed

CMS & Commerce

WordPressDrupalJoomlaShopifyWooCommerceMagentoCraft CMSWebflowSitecoreBigCommerce

Headless CMS

SanityStoryblokContentfulStrapiPayload

Web Frameworks

AstroNext.js
Drive Growth
Reduce Risk
Improve Efficiency
Increase Value

KPIs we move — measured, owned, reported

Pipeline generated Customer acquisition cost MQL → SQL conversion Return on ad spend Revenue influenced

Every KPI is tied to a named owner and a target agreed up front — so this service is accountable to outcomes, not activity, for every stakeholder who consumes the value.

Capability Maturity — we walk you up the five levels

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Level 1 · Initial — reactive — firefighting; success rides on heroicsLevel 2 · Managed — planned per team — results still inconsistentLevel 3 · Defined — standardised — repeatable, fewer deals lost to chaosLevel 4 · Quantitatively Managed — measured — forecast with confidenceLevel 5 · Optimising — self-improving — compounding margin & advantage

Operated at Level 5 · Optimising — self-improving, measured and owned. We track this rank and raise it over time. See the five levels →

Why this matters

Functional value, value-stream value — and why it can't be ignored.

Functional value

Plans, builds and runs demand across paid media and owned email as one managed system — campaigns, creative, audiences and nurture, under a single team and a single dashboard.

Value-stream value

The front of the revenue value stream: it fills the pipeline with qualified demand and feeds every downstream stage, so spend is measured as pipeline and revenue — never clicks.

Why you can't ignore it

Run channels in silos and you are paying to leak — budget with no owner, leads with no follow-up, and a number nobody can tie to revenue. A competitor with one accountable engine simply out-compounds you, month after month.

One engine, composed to your business

Not a fixed package — the right services, integrated.

The Growth Engine amalgamates the component services your business actually needs — orchestrated as one accountable system on a single shared data layer. The exact mix depends on your business, goals and stage, and is agreed in Discovery against a value model. Engage each independently, or let the engine run them as one.

Integration is what compounds growth: services that feed each other and share one data layer, measured as a single engine — not disconnected campaigns.

Conversion rate optimisation

Conversion rate optimisation starts with the page arriving fast.

Most conversion rate optimisation is done on the surface of the page — the headline, the form, the button. We start one layer below that, on the architecture that decides how quickly the page exists at all. A visitor who waits is a visitor who leaves, and no amount of rewording recovers the ones who never saw the page. It is the reason we build on Astro: the page is assembled once at publish time and served finished from Cloudflare’s edge, so there is no server, no database and no plugin stack standing between the click and the content.

Speed is the lever that moves everything

Load time is one of the few conversion inputs that affects every visitor, every page and every channel at once. Improve it and paid media, organic search and email all convert better against the same spend — without changing a word of the offer.

Architecture, not tuning

A site that rebuilds every page on request can be tuned, but it cannot usually be made fast. Astro removes the work rather than optimising it, which is why the gain holds under load and does not decay as the site grows.

Measured where it pays

Conversion is reported next to the media on the same dashboard, against pipeline and return on ad spend. A speed gain shows up as revenue in the number the business already watches, not as a score inside a separate tool.

Conversion work that starts and ends with the wording is optimising the part of the page the slowest visitors never reach. Fix the delivery first, then the words are worth testing.

Where the platform is the constraint, the re-platform is how the speed gets delivered →

One data layer · measured & owned

Every service creates data — captured, measured, owned.

Digital Marketing Manager & Growth Engine doesn’t just run — it generates signal. We land that data in one warehouse and turn it into live KPIs tied to a named owner, so performance is attributable and acted on, never trapped inside a single tool.

Data warehouse

Supabase Snowflake Keboola BigQuery

KPIs, dashboards & apps

Plotly Retool Apache Superset

Platform-agnostic — we connect what you already use and add a warehouse only where it earns its place.

How we select technology

We choose technology last — for the outcomes it has to earn.

Never tech for its own sake. A tool joins the stack only where it measurably protects value, cuts cost or unlocks speed — fit to a designed system, owned where it counts, and measurable from day one. How we select technology →

Speed

Modern, edge-served stacks are sub-second. Slow surfaces cost conversion and SEO every single day.

Cost

Cut licence, hosting and per-task SaaS fees — pay for capability, not lock-in or idle enterprise tiers.

Security

Flat, edge architecture with almost nothing left to attack — fewer moving parts, smaller surface.

Ownership & no lock-in

Composable and self-hosted where it counts — you own the system, not rent someone else’s.

Measurability

Clean data and KPIs baked in — you cannot improve, automate or apply AI to what you cannot measure.

Fit to process

The right tool for a designed system — selected against process readiness, so it amplifies, not adds friction.

How we deliver · DMAIC

Every Digital Marketing Manager & Growth Engine engagement runs on DMAIC.

Define the goal and its value, measure the baseline, analyse the real constraint, improve with a proven build, then control the gains — so results are predictable, repeatable and defensible, not down to luck.

DDefine

Agree the goal, value, budget & timescale up front.

MMeasure

Baseline the KPIs above — current state, not guesswork.

AAnalyse

Diagnose the real constraint and the solution needed.

IImprove

Build the chosen solution; prove the uplift.

CControl

Lock in the gains; monitor and sustain them.

FAQ

Common questions

How is this different from hiring a marketing manager?

A marketing manager is one salary and one skill set, and you still buy the media, the email platform and the analytics separately. Sentry's Digital Marketing Manager service supplies the whole function — planning, campaigns, creative, audiences and nurture — under one team, one dashboard and one number, with selected tool costs included in the monthly fee.

What does “accountable to pipeline” actually mean?

It means the reporting line is revenue, not activity. Sentry measures this service on pipeline created and return on ad spend, wired back to your data layer so each campaign is traceable to what it produced. Impressions, clicks and open rates are diagnostics used to improve the work; they are never presented as the result.

Our paid ads and our email are run by different suppliers. Is that a problem?

It is the specific problem this service exists to fix. When channels run in silos you pay to leak: budget with no owner, leads with no follow-up, and a number nobody can tie to revenue. Sentry runs acquisition through paid media and compounding through owned email as one engine feeding a single pipeline.

What does a managed digital marketing service cost?

Sentry's managed services start at £3,000 per month, scoped to the work and including selected tool costs. Media spend sits outside that fee and stays yours. Across an engagement, total investment is typically 3–5% of turnover to protect existing value, 5–8% to improve performance and 8–15% to create new growth, anchored to a value model agreed first.

How does a managed marketing engagement start?

With a free Discovery session and a Financial Value Model. Discovery produces fourteen structured commercial outputs, including which constraints are actually holding demand back and what each is worth. Only then is a marketing plan built, so the spend is aimed at a constraint rather than at a channel someone happened to suggest.

Who is a fully managed marketing team right for?

Growth-stage businesses of roughly £5m–£100m turnover and 50–500 employees, usually without internal technology leadership, where real demand exists but is not converting its full potential. It suits companies willing to be measured on pipeline. It suits badly anyone who wants activity reported as achievement.

Do you do conversion rate optimisation?

Yes, and it is performance-led. Sentry treats page speed as the first conversion lever rather than the last, which is why we build on Astro: the page is assembled once at publish time and served finished from Cloudflare's edge, so it arrives before a visitor has time to leave. Copy, offer and journey work sit on top of that architecture rather than in place of it.

Why does page speed count as conversion rate optimisation?

Because it affects every visitor, on every page, in every channel at once, and it is decided by architecture rather than by wording. A site that rebuilds each page on request has a floor on how fast it can ever be; a static site served from the edge does not have that floor. On most sites we are handed, removing that delay is the largest single conversion change available.

Start here · the free first step

Digital Marketing Manager & Growth Engine starts the same way every engagement does: with Discovery.

Two distinct moves — a free, no-obligation Discovery Session to find your value at stake, then the Discovery & Blueprint: 14 structured outputs — value model, roadmap and business case — before a pound of delivery is committed.

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Discovery SessionFree · no obligation
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Discovery & Blueprint14 structured outputs

Engaged alone or as one engine

Every service is outcome-led, with measurable targets agreed at the outset.

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