I help founders & leaders build high-impact products, in less time.

Scale-up · Sports · Community

The largest sports community in the world.

Long-term strategic product and design advisor, delivering a measurable uplift in organizational design quality (contributing to an Apple Award) and driving the adoption of a transformational design critique culture and iterative product shipping philosophy.

“Jonah acts as a strategic force multiplier for Strava, and has been a critical partner in driving design quality across our entire platform. He has helped transform our design culture - turning our critiques into positive, high-energy spaces that materially improve the work, contributing to recent wins like our Apple Award. Beyond the craft, Jonah bridges the gap between high-level leadership and on-the-ground execution, acting as an invaluable neutral party for the organization. He coaches our high-performers on strategic execution and provides me with the honest 'ground truth' I need to lead effectively. He helps me navigate organizational complexity and scale my own leadership. We have kept working together year after year because he makes the team stronger, uplevels the quality of the work, and helps me to be a better leader.” - Anita Butler, Chief Design Officer at Strava

Apple Watch App of the Year 2025

Scale-up · Mobility · Delivery · AI

The leading delivery and mobilty superapp in Southeast Asia.

Embedded advisor for Grab's product and design leadership on product strategy for Consumer Maps and IoT, successfully driving the consolidation of key teams, championing a user-centric 'end-to-end journey' philosophy, and setting the product vision for becoming a top-tier 'super app' vertical.

“Jonah brings a rare combination of strategic rigor and operational depth. He acts as an invaluable intellectual sparring partner, keeping our team obsessed with customer delight while staying aligned with our core business imperatives. He excels at bridging the gap between ambitious product vision and world-class delivery. By embedding himself directly in design reviews, he ensures that high-level strategy is never lost in execution. Jonah provides a high-signal external perspective that has materially raised the quality bar for Grab Geo and he is a true force multiplier for our highest-impact product initiatives.” - Pradeep Banavara, Head of Product, Geo

Scale-up · Mobility

Helping 140+ million drivers and riders outsmart traffic together.

Embedded advisor to C-level and cross functional leadership on elevating Waze's UX, product, and organizational capabilities, resulting in improvements to design process, team structure, and key product pillars.

“Jonah has been highly valuable to our team, providing objective mentorship, advising on best practices and helping us develop a long term UX vision that aligns with Waze's emerging strategy. Jonah advised and provided me with a framework to understand exactly how to build and support the UX team as their manager. His vision in viewing the product holistically from a users perspective was essential in determining which processes and steps are needed to scale sustainably.” - Elad Stein, Head of UX

Scale-up · Streaming · Entertainment

The online movie theater for auteur cinema.

Long-term trusted advisor on product and design strategy, driving significant improvements in core subscriber metrics and platform monetization, optimizing key user experiences, and introducing high-impact A/B testing methods.

“Collaborating with Jonah has led to a step-change in our approach to product design. His deep experience and cross-disciplinary approach to strategy interweaves ideas, which elevates and refines them. His people-centric focus in critiques pushes us to dive deeper into the ‘why’ behind what we build.” - Narain Jashanmal, VP of Product, MUBI

Apple TV App of the Year 2023

Series A+ · Sports · Community

Helping people to have better, safer adventures in the mountains.

Long-term trusted advisor to Fatmap’s design and product leadership, driving strategic clarity and tangible product improvements across core features, directly leading to a successful acquisition by Strava.

“Jonah adds huge value across strategy and UX, leaning on his experience of best practices from fast moving consumer products. He has provided invaluable experience and guidance over the years that has particularly helped with cross functional partnerships. He is able to articulate and hone founder insights, and guide the team to think in the right way, move fast, and understand each other better. Jonah is helping us to anticipate and solve issues with both product and people. He is coaching the company to operate in the way of the best Silicon Valley companies.” - Misha Gopaul, Founder of Fatmap & VP of Product at Strava

Apple App of the Day

Enterprise · Gaming · Entertainment

An award winning games studio, striving constantly to work in a better, healthier way.

“Jonah is a true powerhouse in the world of product development and leadership. He's not just a seasoned professional; he's a true analytical thinker with a deep love for what he does. Jonah's wisdom and warmth will leave an everlasting impact on your journey.” - Steve Cuss, Studio Head, EA Criterion Games

Series A+ · Navigation

Helping drivers to outsmart parking together

Advised the cofounders, mentoring the product & design team at Spotangels.

“Working with Jonah is one of the best things that happened to SpotAngels. He helped us put principles for product and design in place, which saved us precious time and made our execution substantially better. He has also helped us grow as leaders and operators by providing honest and to-the-point feedback. Not only is Jonah an impressive operator and mentor, but he is also incredibly caring and dedicated. Jonah is a world-class advisor who can accelerate trajectories. I strongly recommend him to any startup that he is interested to work with.” - Hamza Chadhi, Founder & CEO, SpotAngels

Google Play Best App

Scale-up · Automotive · Marketplace

The easy way to buy and sell your car online.

Advised VP of Product, design & research teams on elevating design excellence and leadership development, which resulted in a restructured design critique process, organizational alignment, clear strategic brand values, and supported a key business line to reach £1 million net revenue.

“Jonah is a seasoned pro; his supportive coaching has helped me transition from being a manager to a leader. His guidance has helped me identify traits and behaviours for growth in myself and carwow's Design team. Jonah is helping us change our design culture and supporting us to mature in how we give feedback and share in design critiques, increasing collaboration and how to grow design leadership in our organisation.” - Gareth Thomas, Head of Design & Research

Seed · Social · Community

Connecting neighbours to have a fun, supportive, and resourceful community.

Advised on a strategic shift of the app's identity and executing a major visual overhaul, resulting in a successful pivot to transactional utility, significant improvements in key growth channels, and an uplift in retention and UX metrics.

“Working with Jonah has been an invaluable experience. His expertise in community-first design and strategy was crucial in helping our platform resonate deeply with our users. His innovative and practical approach to problem-solving helped us refine our ideas, enhancing the app’s functionality and aesthetic appeal. His guidance was instrumental in increasing user engagement and retention. We are deeply grateful for Jonah’s invaluable contribution to OneRoof and I highly recommend his mentorship to anyone seeking to develop a product with a strong focus on community engagement and retention.” - Nikos Georgantas, Founder & CPO

Seed · Social · Community

The friendliest app for mums.

Advised the founder and designer of Mush at LDN.Labs incubator.

“Working with Jonah was the highlight of my experience at the incubator in terms of product thinking. Jonah has given a hugely refreshing perspective, asking really intelligent questions to get us thinking about all areas of the product. He's enthusiastic, inquisitive, and he cares.” - Katie Massie-Taylor, Founder & CEO, Mush

Seed · Social · Community

Exploring the world’s best food and drink experiences.

Advising the founder and designer of Tabl at LDN.Labs incubator.

“Jonah is friendly and professional, his attention and support is clearly genuine. He pushed us to answer the hard questions that mattered, which I'm really grateful for. I really couldn't have asked for more.” - Alex Heeton, CTO, Tabl

Seed · Social · Community

The #1 golfing community where golfers share their love for the greatest game.

Advised the founding team with critical product analysis, defined strategies for user growth and compelling storytelling, and set the strategic direction, leading to immediate action planning for product improvement.

Seed · Fintech · Marketplace

A crypto-based loyalty program.

Advised the founding team to refine the core strategy, product design, and funding, resulting in a clear vision, secured financial targets, critical product decisions, and an aggressive MVP launch plan with 10,000+ customers onboarded.

Scale-up · Community · Photography

The community of passionate travel photographers.

Advised the founding team of Panoramio after their acquisition by Google.

Enterprise · Security · B2B

Leading the transformation of the security industry.

Advised cross functional leadership on fostering a product-driven culture, implementing a design system, and developing key team members, resulting in quantified annual time savings, key promotions, and the establishment of a robust design critique process.

“Jonah works as an advisor, coach and mentor to the team from executive level down to individual contributors. He can translate his experience operating at world class companies to valuable insights and actionable guidance. He has guided us on leadership, product strategy and execution, design and research, hiring process and evaluation, and organisational structure and operations. He adds huge value to any company that he works with.” - Marcus Rosenberg, VP of Intelligent Services at Securitas

Series A+ · AI · Productivity · Knowledge

Reinventing how humans, teams and computers work together.

Strategic design and product advisory, helping define the core AI value proposition and key feature set for an AI-native meeting platform, resulting in a clearer product-market fit and accelerated path toward eliminating user friction.

Product Hunt Product of the Month 2025

Series A+ · AI · Collaboration

Freeing time from meetings with an AI powered video recorder.

Long-term advisory on product strategy, growth, and organizational coaching, successfully pivoting the core product towards a defensible, AI-first meeting intelligence platform.

“Jonah is advising tl;dv on the entire product and design spectrum, ranging from hands-on design advice to operational coaching and people development. We started out our sessions with just the CEO and head of design, by now more and more people from the team are joining his sessions - it's THAT helpful. Working with Jonah is not only helping us think bigger and bolder, but also develops our confidence to execute across the entire team. It's really inspiring for us to experience first hand how such a seasoned senior leader still has access to a fountain of creativity as if it was his first day in design.” - Raphael Allstadt, Founder & CEO, tl;dv

Product Hunt Golden Kitty Awards 2021

Series A+ · CRM · B2B

The all-in-one CRM with one tool for all your relationships.

Advised on strategically elevating Folk's product positioning and core user experience, including design, onboarding, and monetization, which delivered a clear shift in focus, a distinct visual identity, and a simplified, job-first approach for new AI features.

“Jonah makes us look at interfaces with fresh eyes. He helps us be more user-centric and craft delightful end-to-end user experiences. We are not simply solving problems pragmatically but also thinking about the way we want user to feel: it's also about emotions. With Jonah, we levelled up our capacity to build great product.” - Simo Lemhandez, co-founder, Folk

Product Hunt Golden Kitty Awards 2022 & 2023

Series A+ · Privacy · B2B

The best data loss prevention software for SaaS.

Advised on sensitive data control and design process transformation, creating clarity on the core value proposition and successfully achieving early customer acquisition goals, leading to a successful fundraise.

“Jonah has provided the entire product team with strategic and tactical input on the execution of the product, and how to use shortcuts to speed up the testing and learning process. He also provided invaluable 1-1 coaching to our design team and we saw material improvement across the board after just a couple of months.” - Rich Vibert, Founder & CEO, Metomic

Seed · Navigation · B2B

Keeping young people safe and connected when enjoying nights out.

Advising the founding team at Where You At.

“Jonah has such an inspirational perspective formed around the product and user. Working with Jonah has allowed us to look into deep level user psychology, helping to inform our strategy and development and pushing the boundaries of what we thought possible. Every session is based around structure, innovation, and solution and we can’t thank him enough for his help and expertise.” - Saul Peleg, Head of Strategy & Partnerships, Where You At

Seed · Enterprise · B2B

Building Google Maps for your tech stack.

Advising the founding team on product and UX strategy to pivot a complex SRE tool to a modern, agent-based platform, directly influencing a simpler UX, clear core features, and a high-impact narrative for investors and customers.

Seed · Video · SaaS

Empowering everyone to create engaging video at their workplace.

Advised the founding team on Cofenster's product vision, resulting in a reframed product goal to prioritize ease-of-use and a strategic pivot toward social media principles for corporate communication.

Seed · Mapping · B2B

Building a game-like 3D map of the world.

Advising the founding team at Wrld 3D.

Venture Capital · All sectors

Partnering with several venture capital funds and their portfolios, helping them to build category-defining companies.

Enterprise · All sectors

Bringing the power of insight to every great professional decision.

Expert advisor and speaker to expert networks (GLG, Third Bridge, Guidepoint, others).

Enterprise · TMT · B2B

The leading Strategy Consulting practice specialized in Telecoms, Media and Tech.

Metaverse and tech trainer for FTI Consulting and Delta Partners Group.

Seed · Mental Health · Wellness

The toolkit for men's minds from Bear Grylls.

Advised on product, growth, and fundraising to the Mettle mental wellness app, resulting in a high 74% free-to-paid conversion rate, refined positioning for middle-aged men, and a successful fundraising strategy.

“What’s brilliant about Jonah is that he is so detail and action focused. Something tech start-ups can struggle with is advisors giving general pointers, which someone then has to try to interpret. Jonah comes with specific action points and they are laser focused and make a big difference. His huge experience means he can quickly identify a problem and come up with practical and easy to implement solutions. This has been like gold dust for us. He’s a great guy and the team love him: our CTO refers to Jonah as the Mark Ronson to our Amy Winehouse, he comes in to polish the product and make it truly sing for a big audience.” - Neil Smith, Founder & CEO

Apple App of the Day

Series A+ · Healthcare · Wearables

Advising the CPO, design & research teams of Nanoleq, the first breathing wearable with live biofeedback for heart health, stress & sleep.

“Jonah is clearly a visionary — one of very few that can push the boundaries of product design and challenge the status quo. This gives him a remarkable ability to act as a catalyst for designers and managers to unlock the full potential of a product. Jonah's guidance has been essential in creating a unique and engaging experience for Oxa, a complex full-stack health-tech product.” - Vincent Martinez, Founder & CEO

Series A+ · Healthcare · Wearables

Redefining the standards of patient-centered continuous care wearables.

Advised on design and product strategy for a health-tech application, which successfully increased app retention from 16% to 40% and expanded the target user demographic to a younger, broader audience.

“Jonah is one of the few visionary product designers out there in Europe. He will challenge the product experience to make it highly engaging and valuable for customers. In our case, Jonah was especially of great help as his game design experience helped us to set up an original and gamified journey for an end user.” - Simon Yang, Head of Product

Seed · AI · Local

Helping people discover, keep track of, and share recommendations of places they love.

Advised the founder of Rex with critical product design and strategic input that successfully guided a pivot from a social network to an AI-powered location discovery platform, leading to a successful acquisition by DoorDash.

“Jonah has outstanding product design intuition, and has pushed our internal thinking in a way that has truly transformed our product. He excels at getting to the root of the user problem and provides exceptional perspective that has both simplified and made our product 10x better. Working with Jonah has been a joy - he gives excellent, thought-provoking feedback, and we always leave our sessions deeply inspired and with a list of action items to think and iterate on.” - Aliza Rosen, Founder of Rex & Product Lead at DoorDash

Series A+ · AI · B2B

Advising the founding team building Cogna, hyper-customised software defined by you, delivered by AI.

Advised on product, design, and leadership that directly resulted in key team hires, a pivotal shift in the company's product direction toward opinionated solutions for accessible AI, and was cited as instrumental in helping to raise the Series A round.

“Jonah's expertise has been a game-changer, and it's played a big part in getting us from zero to one. We’re so grateful for everything he's done.” - Pen Peters, Founder & CEO, Cogna

Scale-up · AI · Advertising

The best Emotion AI platform in the world.

Advised on high-level product strategy and team coaching, successfully driving a strategic pivot to AI, securing a Meta contract, and mitigating a $7m problem in panel fraud.

“Jonah has been instrumental in helping frame and pitch product opportunities clearly. His experience brings a multitude of perspectives that help you focus and progress faster with the things that really matter.” - Martin Salo, Founder & CPO, RealEyes

Series A+ · AI · Travel

The world's largest, smartest and most interactive AI Travel Assistant.

Guided the founding team of Layla by Beautiful Destinations through a core strategic pivot, leading to a huge increase in daily user base, a key acquisition, and the definition of a North Star metric centered on user decision-making.

“Jonah has been immensely valuable for us to shape our approach and strategy as we navigate through this nascent market of travel AI. Jonah's vast experience across multiple industries has helped us think differently to problems that the travel industry has faced for decades. He has not only given guidance on a high level but has a very hands on approach and is able to help on a granular level of design as well. I can highly recommend to anyone who is building a product that has never been built before or to optimising an existing one.” - Saad Saeed, co-founder

Series A+ · Fintech · AI

The faster, smarter way to find debt market intelligence.

Advised 9fin's Design Leader through a critical transition, driving the definition of their strategic vision and enabling key organizational impact by establishing user research and securing support for design metrics.

“Our company had scaled rapidly, and Jonah me helped realise my role as a design leader changed. With his mentorship I shifted from operating design as a reactive service, into a much more strategic place. Now I focus on the levers only I can pull — setting clear priorities, making tough decisions confidently, and building a team that delivers real business impact.” - Jordan Rolph, Head of Design

Seed · AI · Healthcare

Your personal AI Powered mental wellness coach.

Advised the founder on refining Robin Health's core narrative, product definition, and go-to-market strategy, resulting in successful fundraising.

Seed · AI · Robotics

Empower anyone to use robots, for anything they can imagine

Advised the founders through intensive design and strategy sessions to establish core philosophy, product principles, and market narrative, successfully evolving initial concepts into a detailed strategic direction for fundraising and hiring.

Seed · AI · B2B

The sales enablement platform that lets you prep like a machine, sell like a human.

Advised the founders through a successful pivot from an enterprise search engine to AI-driven knowledge management software, achieving differentiated quality control and tangible business growth.

Seed · AI · Mobility

Revolutionising on-street parking in real-time with AI.

Advised the founders of ParkNav.

Series A+ · AI · Marketplace

The leading AI-driven online food box delivery service in Eastern Europe.

Advised the founders on a strategic pivot from a meal-kit service to a funded AI-native grocery platform, establishing the core data engine and product roadmap to save consumers time and money.