Pivot & rebuild: 12 months to product-market fit

Pivot & rebuild: 12 months to product-market fit

Pivot & rebuild: 12 months to product-market fit

Pivot & rebuild: 12 months to product-market fit

Pivot & rebuild: 12 months to product-market fit

Mindstone is an AI-powered learning platform designed to upskill teams at scale with personalized, practical, hands-on AI training.

Mindstone is an AI-powered learning platform designed to upskill teams at scale with personalized, practical, hands-on AI training.

Mindstone is an AI-powered learning platform designed to upskill teams at scale with personalized, practical, hands-on AI training.

Role

Role

Senior product designer

Senior product designer

Focus

Focus

AI-driven workflows· Product market fit

AI-driven workflows· Product market fit

Period

Period

2025

2025

Team size

Team size

12 people

12 people

Context

Mindstone started out as a B2C app designed to help people learn every day and consolidate their knowledge into a learner profile — a living record of skills intended to provide a more accurate skills assessment than traditional CVs.

I joined in early 2023, at a point where the product was engineer-led, lacked a cohesive vision, and showed significant inconsistency across its core flows.

In my first six months, we focused on cleaning up the UX flows and redesigning the core experience in order to create cohesion and logic across the product.

We started seeing some traction — daily active use increased, session duration improved, and a group of early power users began to emerge.

Context

Mindstone started out as a B2C app designed to help people learn every day and consolidate their knowledge into a learner profile — a living record of skills intended to provide a more accurate skills assessment than traditional CVs.

I joined in early 2023, at a point where the product was engineer-led, lacked a cohesive vision, and showed significant inconsistency across its core flows.

In my first six months, we focused on cleaning up the UX flows and redesigning the core experience in order to create cohesion and logic across the product.

We started seeing some traction — daily active use increased, session duration improved, and a group of early power users began to emerge.

Challenge

Despite initial traction, it became clear that the product lacked a core use case capable of driving sustained engagement or market fit.

The founding hypothesis — that people want to learn every day in small increments — did not hold. Usage was fragmented: individual features showed promise, but no single behavior emerged as the anchor of engagement.

Learning was episodic and goal-driven rather than daily and habitual, leaving no clear path to monetization. Growth plateaued, and the business risked stagnation without a decisive strategic shift.

The Journey to PMF

01

Early 2023

Redesign & reset

Context: Joined as the first designer, inheriting an engineer-led B2C product with fragmented UX

My role: Completely redesigned core flows, built v1 of the design system, and restructured the experience for coherence and clarity.

Outcome: DAU grew by +25%, learning session time increased by 37%, early power users emerged.

Mid 2023

Research & insights

Context: Growth stalled, fragmented usage showed no clear path to PMF.

My role: Led 30+ user interviews, launched survey (60+ responses). Used data from interviews and surveys, Dovetail, Amplitude, Zendesk, and power-user feedback to create an automated weekly user feedback report.

Outcome: Data clearly showed that people don’t learn every day. Instead, learning is episodic, goal-driven, and topic-based.

02

03

Late 2023

Pivot start

Context: The “daily learning” hypothesis was invalidated. We set out to test if the program-based, goal-driven learning could work.

My role: Prototyped a program-based learning functionallity, tested with exiting users based on AI-curated content tailored to user chosen topics.

Outcome: Strong engagement (70% completion), and user feedback validated the new direction. AI basics consistently emerged as the most in-demand theme, pointing toward a sharper focus.

Early 2024

Shift to AI upskilling

Context: AI adoption exploded post-ChatGPT launch, demand for workplace AI skills surged.

My role: Benchmark, research & design, contributed to product strategy, and co-led the transition plan. Made strategic design decisions on which legacy features to deprecate and updated the design system to support the new product needs.

Outcome: In just a few months we delivered 4 major functionalities: the learner dashboards, the program page, personalized learning cards, and the prompt sandbox. The entire platform had been rebuilt around AI upskilling, establishing a coherent product direction and strong design foundation

04

05

Mid 2024

B2B & pilots

Context: B2C monetization proved weak, while organizations began demanding AI workforce training.

My role: Supported the strategic pivot to B2B by redesigning Mindstone as a responsive web app (deprecating iOS/Android), scaling the design system, and tailoring UX for enterprise deployment.

Outcome: We signed pilot programs with EY, Lufthansa, Hyatt, Strava, and the NBA. Enterprise focus proved scalable.

Late 2024

Personalization & engagement

Context: Our data showed learners gained knowledge but struggled to apply it in their daily work.

My role: Led research and designed a conversational AI agent to capture role context, propose tailored use cases, and personalize program goals. Built a cohort-wide use case library to drive shared learning and highlight practical adoption.

Outcome: Cohorts generated 70+ applied AI use cases on average, giving enterprises tangible evidence of impact and a powerful sales story.


06

07

2025

Scaling impact & sales enablement

Context: Core product stabilized. Iteration shifted from heavy feature releases to refinement. Growth bottleneck moved to sales conversion.

My role: Transitioned day-to-day product design to the designer under my guidance and focused on sales enablement through design. Led full rebrand, crated sales support materials, interactive tools and product demos, and actively joined sales and partnership calls to bridge product storytelling gap.

Outcome: Directly supported pipeline generation and growth. Lead conversion improved by 35% in six months, unlocking larger deals.

Product features

* Visuals are approximate and redesigned for confidentiality. The structure and features reflect the real product.


Role highlights

Role highlights

01

Redesigned the platform end-to-end multiple times as the company evolved — from a fragmented B2C learning app to program-based learning and finally a scalable B2B AI upskilling platform.

01

Redesigned the platform end-to-end multiple times as the company evolved — from a fragmented B2C learning app to program-based learning and finally a scalable B2B AI upskilling platform.

01

Redesigned the platform end-to-end multiple times as the company evolved — from a fragmented B2C learning app to program-based learning and finally a scalable B2B AI upskilling platform.

01

Redesigned the platform end-to-end multiple times as the company evolved — from a fragmented B2C learning app to program-based learning and finally a scalable B2B AI upskilling platform.

02

Built and continuously evolved the design system, adapting it through each product shift to maintain coherence, accelerate iteration, and support new AI-driven interactions.

02

Built and continuously evolved the design system, adapting it through each product shift to maintain coherence, accelerate iteration, and support new AI-driven interactions.

02

Built and continuously evolved the design system, adapting it through each product shift to maintain coherence, accelerate iteration, and support new AI-driven interactions.

02

Built and continuously evolved the design system, adapting it through each product shift to maintain coherence, accelerate iteration, and support new AI-driven interactions.

03

Played a critical role in driving the pivot — synthesizing research, data, and feedback into actionable insights that shaped design decisions and product direction. Partnered with the CPO and CTO to align strategy, prioritize features, and execute the transition effectively.

03

Played a critical role in driving the pivot — synthesizing research, data, and feedback into actionable insights that shaped design decisions and product direction. Partnered with the CPO and CTO to align strategy, prioritize features, and execute the transition effectively.

03

Played a critical role in driving the pivot — synthesizing research, data, and feedback into actionable insights that shaped design decisions and product direction. Partnered with the CPO and CTO to align strategy, prioritize features, and execute the transition effectively.

03

Played a critical role in driving the pivot — synthesizing research, data, and feedback into actionable insights that shaped design decisions and product direction. Partnered with the CPO and CTO to align strategy, prioritize features, and execute the transition effectively.

04

Helped transform the company from engineer-led to product- and design-led — establishing workflows, embedding design practices, and shaping a culture of systematic discovery and delivery.

04

Helped transform the company from engineer-led to product- and design-led — establishing workflows, embedding design practices, and shaping a culture of systematic discovery and delivery.

04

Helped transform the company from engineer-led to product- and design-led — establishing workflows, embedding design practices, and shaping a culture of systematic discovery and delivery.

04

Helped transform the company from engineer-led to product- and design-led — establishing workflows, embedding design practices, and shaping a culture of systematic discovery and delivery.

05

Led a full rebrand and product storytelling effort, directly supporting sales and partnerships by creating investor decks, learning reports, and interactive tools — contributing to pipeline growth and deal conversion.

05

Led a full rebrand and product storytelling effort, directly supporting sales and partnerships by creating investor decks, learning reports, and interactive tools — contributing to pipeline growth and deal conversion.

05

Led a full rebrand and product storytelling effort, directly supporting sales and partnerships by creating investor decks, learning reports, and interactive tools — contributing to pipeline growth and deal conversion.

05

Led a full rebrand and product storytelling effort, directly supporting sales and partnerships by creating investor decks, learning reports, and interactive tools — contributing to pipeline growth and deal conversion.

In an engineering-heavy organization, Oana's relentless pursuit of visual excellence was greatly valued, ensuring that design wasn't just an afterthought but a core strength. Like any startup, we had to wear many hats, and Oana embraced this challenge. She struck the perfect balance between working independently and driving alignment across the team, picking up functions that were way outside her usual day-to-day. She elevated our product, leaving us in the best possible position to continue forward without her.

Stefan Keranov

CTO @ Mindstone

Let's talk

oanna.demian@gmail.com

Contact me for the full case-study

Let's talk

oanna.demian@gmail.com

Contact me for the full case-study

Let's talk

oanna.demian@gmail.com

Contact me for the full case-study

Let's talk

oanna.demian@gmail.com

Contact me for the full case-study

In an engineering-heavy organization, Oana's relentless pursuit of visual excellence was greatly valued, ensuring that design wasn't just an afterthought but a core strength. Like any startup, we had to wear many hats, and Oana embraced this challenge. She struck the perfect balance between working independently and driving alignment across the team, picking up functions that were way outside her usual day-to-day. She elevated our product, leaving us in the best possible position to continue forward without her.

In an engineering-heavy organization, Oana's relentless pursuit of visual excellence was greatly valued, ensuring that design wasn't just an afterthought but a core strength. Like any startup, we had to wear many hats, and Oana embraced this challenge. She struck the perfect balance between working independently and driving alignment across the team, picking up functions that were way outside her usual day-to-day. She elevated our product, leaving us in the best possible position to continue forward without her.

Stefan Keranov

CTO @ Mindstone