Growth Hacking Consultant · senior · Barcelona
Senior growth hacking consultant with 10+ years in B2B.
I'm Albert Puig, a senior growth hacking consultant with 10+ years in B2B (SaaS, industrial, legal tech, fintech). I apply the AARRR framework + GrowthBook A/B + pipeline attribution. Format: one-off consulting (2-4 h) or retainer (8-20 h/month). From 1,500 €/month.
In short
What does a senior growth hacking consultant do?
A senior growth hacking consultant is not a "hacker" pulling tricks. It is a strategic consultant who applies the AARRR methodology + disciplined experimentation (A/B tests with statistical significance) + real attribution to pipeline. They act as a sparring partner for the CMO/founder with 10+ years of B2B experience: they spot non-obvious growth levers, prioritise with ICE rigour, prevent costly mistakes and speed up decisions.
I'm Albert Puig Navàs, founder of cronuts.digital (Barcelona, Aribau 205). 10+ years in B2B with clients in SaaS, industrial, legal tech, healthcare and fintech. One-off consulting format: 2-4 h sessions at €450/h. Retainer format: 8-20 h/month from 1,500 €/month. Project format: audit + roadmap €4,800-8,500. Maximum 5 active retainers at any one time.
B2B companies with web development + CRO by cronuts
72% of "growth hackers" on LinkedIn have < 3 years of experience. Senior B2B with a track record + a rigorous framework > hype kids with quick hacks.
Request a quote →What I can do for your growth
Six areas where a senior consultant speeds things up.
Growth consulting is not "do this". It is strategic sparring based on 10+ years of seeing the same patterns repeat in B2B. I save you 2-3 years of costly mistakes + months of slow decisions. Typical pay-off: consulting ROI in 3-6 months.
Area 1 · growth strategy
AARRR audit + 12-month roadmap
Full AARRR audit (Acquisition, Activation, Retention, Referral, Revenue). Gap analysis vs competitors. 12-month roadmap prioritised with ICE. Growth hypotheses with estimated lift.
Area 2 · experimentation
GrowthBook + Bayesian + guardrails
Set-up of a rigorous experimentation framework (self-hosted GrowthBook, Bayesian significance, guardrail metrics, sample size calculator). Team training. A sustainable cadence of 3+ tests/month.
Area 3 · founder sparring
Strategic 1:1 sessions
1:1 sessions with the founder/CMO/VP Growth. Sparring on strategic decisions: pricing, positioning, channel mix, pivots, hires, fundraising narrative. Confidential, no sales agenda.
Area 4 · lead scoring + BANT
Auto-qualification pipeline
Implementation of automated BANT lead scoring (Budget, Authority, Need, Timeline) in your CRM. Signals: firmographic, behavioural, intent. Prioritisation for SDRs/AEs. ICP refinement.
Area 5 · attribution
Server-side to revenue
Set-up of server-side multi-touch attribution (GTM server + BQ) to real pipeline. Removal of false "direct". Data-driven budget allocation decisions. LTV:CAC cohort analysis.
Area 6 · training
Team workshops + SOPs
In-house training for the marketing/growth team (2 intensive days). Documented SOPs (test plan, experiment tracker, reporting framework). Handoff to bring growth capability in-house.
Consulting formats
Flexible formats. One-off, retainer or project.
Depending on where you are: a founder/CMO looking for one-off sparring, a team that needs an ongoing retainer, or a company with no growth function that needs a one-shot audit + roadmap. Maximum 5 active retainers at any one time.
- One-off session 2 h · €900 · specific strategic decision
- One-off session 4 h · €1,800 · quick audit + recommendations
- Light retainer 8 h/month · 1,500 €/month · 1 call/week + async
- Standard retainer 12 h/month · 3,500 €/month · 2 calls/week + deep dive
- Premium retainer 20 h/month · custom · daily async + weekly live
- One-shot AARRR audit · €4,800-8,500 · executive document + roadmap
- Workshop project 2 days · €4,800 · team training + SOPs
- Founder mentoring 6 months · €12,000 · 2 strategic sessions/month
6 typical red flags I spot
- 01Top 1
Paid overspend without AARRR
- 02Top 2
Vanity metrics in reporting
- 03Top 3
ICP too broad
- 04Top 4
A/B tests without sample size
- 05Top 5
No BANT lead scoring
- 06Top 6
Client-side tracking iOS 17
- 07Optional
Basic email automation
- 08Optional
Pricing without experimentation
About Albert Puig
LinkedIn: albertpuignavas-ia. 10+ years in B2B growth. Founded cronuts in 2018. 100+ companies advised. Published in > 40 B2B blogs. Master's degree from ISDI; lecturer at IED, ISDI and UNIR.
How we work
Three phases. Discovery call, proposal, delivery.
30-min discovery call (free). Format and pricing proposal within 48 h. First session or onboarding within 1 week. Continuous delivery with docs + async + live, depending on the format.
Phase 01 · Discovery
30 min free · fit check
30-min call with Albert to understand where you are, your goals, current stack, team and budget. Two-way fit check (we don't force a fit). Recommendation of the best format (one-off, retainer, project or "not worth it right now").
Phase 02 · Proposal + signature
Format + pricing + timeline
Detailed proposal: format (session/retainer/project), scope, deliverables, fixed pricing. No hidden fees. 48 h for you to decide. Signature + kick-off within 1 week.
Phase 03 · Delivery
Sessions + docs + async
Delivery according to the format: live 1:1 sessions, async Slack/email, executive docs (audit, roadmap, SOPs), shared dashboards. Full access for your team. Iteration based on feedback.
Real cases · one-off consulting
Consulting engagements that changed strategic decisions.
Eninter: 12-month retainer with Albert. +175% leads + AARRR framework installed in-house.
JAX: 3-month audit + roadmap, handoff to the US team. In-house execution: 4,600 MQLs/24 months.
Grup Olivé: one-off sessions over 6 months (pricing + local growth). +42% bookings without a retainer.
Growth consulting truths 2026
Six things about honest growth consulting.
Consulting > agency when you need strategy, not execution. Sparring is worth its weight in gold.
Consultants without a real B2B track record are influencers, not consultants. Cases > content.
A light retainer (8 h/month) usually delivers better ROI than a large one: concentrated seniority.
Consulting without a documented roadmap = endless chats with no closure. Docs > vibes.
Sparring with an external consultant speeds up decisions 2-3×. Internal bias is real.
Hybrid formats (sessions + retainer + project) are the sweet spot for flexibility.
Verified reviews · founders and CMOs
The consultant founders recommend as a sparring partner.
Frequently asked questions
What founders and CMOs ask me on the discovery call.
How much do you charge for growth hacking consulting?
When should you hire a consultant vs an agency?
What B2B experience do you have?
Do you sign NDAs?
Which format do you recommend?
Maximum number of simultaneous retainers?
How does it connect with the cronuts agency teams?
Can I book a discovery call?
Discovery call · 30 min · free
Book 30 min with me for a fit check.
If you need senior strategic sparring with 10+ years in B2B growth, book a video call. Two-way fit check, zero sales agenda. If I'm not the right fit, I'll recommend someone who is.