Growth Mindset in Action

We believe in the power of the Growth Mindset to transform businesses through data, experimentation, and strategic execution. Our team integrates technology, product, and marketing to turn opportunities into measurable results. With this philosophy, we help startups and scale-ups grow with strength and agility.
Daniel Castano

Daniel Castano

Growth Advisor and Consultant with over 23 years of experience driving growth strategies, designing scalable tech architectures, and optimizing operations.

I lead Growth Operations at both strategic and technical levels, ensuring that digital infrastructure, product, martech, and user acquisition work seamlessly together. I navigate effortlessly between C-suites and technical teams, turning business vision into scalable, efficient solutions.

I work closely with product teams to iterate, experiment, and optimize impact based on data and predictive models. I design data-driven marketing strategies that align acquisition, retention, and monetization with overall business goals. My leadership integrates technology, strategy, and execution—enabling companies to scale with strength and agility.

Currently, I’m exploring AI systems applied to Growth, including real-time prediction and personalization models. I’ve worked across e-commerce, SaaS, gaming, media, and AI—helping startups and scale-ups turn their technology into a competitive edge.

Jamie Dunbar Smyth

Jamie Dunbar Smyth

A results-driven Growth specialist with a hands-on approach and 12 years of experience driving digital B2B and B2C businesses. In recent years, I’ve focused on supporting e-commerce companies with their go-to-market strategies and fundraising efforts.

I’m passionate about crafting communication strategies that enable sustainable brand growth by leveraging customer insights to optimize the purchase funnel across multiple channels and enhance the overall customer experience. At the core of my work is building a strong data foundation that informs decision-making and fosters a culture of experimentation to uncover and capitalize on growth opportunities.

Augustin Hiebel

Augustin Hiebel

Product designer with over 16 years of experience in SaaS, specializing in UX research, product design, and front-end development. I combine behavioral science with technical skills in HTML, CSS, and JavaScript to create intuitive, high-impact digital experiences that drive growth and align business goals with user needs.

I have led projects across industries such as tech, gaming, education, and financial services—defining product strategies, improving usability, and optimizing user experiences. My approach is rooted in continuous research and experimentation, ensuring every design delivers tangible, scalable value.

My work includes implementing efficient design systems, optimizing digital platforms, and integrating Martech solutions to maximize user retention and conversion. Passionate about innovation and user-centered design, I aim to turn ideas into digital products that generate lasting impact and sustainable value.


Andres Castano

Andres Castano

Digital marketing and product specialist with extensive experience in growth strategies, martech, and CRM. My approach blends data analysis, automation, and process optimization to improve conversion, retention, and user experience across B2B, B2C, and e-commerce businesses.

Throughout my career, I’ve led projects at both global companies and startups, designing and implementing strategies for acquisition, engagement, and loyalty. I’m experienced with platforms like HubSpot, Braze, Klaviyo, Segment, and mParticle, and have managed complex integrations between product and marketing teams.

I enjoy crafting innovative, scalable solutions that help brands maximize their impact through data-driven strategies and efficient execution. My work focuses on demand generation, funnel optimization, and the implementation of martech stacks aligned with business goals.

Enrique Manjavacas

Enrique Manjavacas

I’m an engineer specialized in Natural Language Processing (NLP) and Large Language Models (LLMs), with experience in both academia and industry. I design AI-driven solutions that transform how companies work with text — from models trained on 17th-century literature to smart pipelines for translating, correcting, or analyzing content at scale.

In recent years, I’ve worked as an independent consultant and for organizations such as Amazon, Sigma AI, and leading universities like Leiden and Antwerp. I comfortably navigate both technical and strategic domains: I’ve fine-tuned models for sectors like legal and publishing, automated NLP workflows to enhance products, and helped teams integrate AI into their processes without getting overwhelmed.

I’m passionate about the intersection of language, data, and technology. If you’re facing a challenge involving text — training a model, fine-tuning an existing one, analyzing large volumes of linguistic data, or simply figuring out how to get started with AI — I can likely help. I speak Spanish, English, German, and Dutch, and collaborate with teams across Europe from my base in Madrid.


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