The founders who win aren’t always the ones with the best product. They’re the ones who figured out how to sell it, scale it, and survive long enough to matter. We’ve done that — in fintech, climate tech, AI, and SaaS — across markets that don’t hand out second chances. We built Growth Inflection because the hard lessons shouldn’t have to be learned twice.
We work with founders who are ready to move.
„We’ve seen this before. Let’s skip the part where you figure it out alone.“
Stefan Langin
GI CEO · GTM & MOE Framework · Fintech & AI Specialist · Operator
Go-To-Market · Fintech · AI-Driven Growth · Operations · US & EU Market Entry & Expansion
I’ve spent two decades at the intersection of technology, finance, and growth — building the systems that turn ambitious ideas into market realities.
I led GTM for one of Europe’s first AI-powered CDPs inside major financial institutions. I scaled a clean tech marketplace to 327% growth as COO. I ran a 150-person operation across 25 countries. Today I help fintech and AI founders do in months what took me years to figure out.
Not with jargon. Not with hype. With the kind of pattern recognition that only comes from having been in the room when it worked — and when it didn’t.
Growth is a system. I know how to build it.
Fintech · Embedded Finance · AI & Ad Tech · SaaS · Climate Tech · Banking & Insurance · US & EU Markets
Cooking for friends, running to clear my head, and exploring new places — the simple things that keep me sharp.
Alex Katzman
Advisor, Climate Tech Go to Market Builder
Specialty:
Enterprise Sales, BD, Customer Success and Product Marketing
My whole career has been working in startups, building out go to market teams from the ground up. I’ve navigated through bootstrapping, scaling with VC funding and optimizing for profitability. My focus is on moving our world toward a cleaner future. Unlocking repeatable growth in the complex climate tech market is where I thrive. Having worked in the US, Europe, Africa and Asia, I gravitate toward global opportunities.
Climate Tech | Energy and Renewables | Sustainability | Utilities | Telecom | Insurance | SaaS
What I enjoy
Exploring new cultures and cuisines. Playing tennis, hiking, rock climbing and skiing. Reading stories with my daughter.
Volker Ballueder
Advisor, Sales Specialist, Executive Coach
Specialty:
Founder Coaching, SaaS and Tech Sales, Partnerships, Revenue Operations
Based in the UK, I’ve built and scaled GTM teams in start-ups and scale-ups across Europe. From bootstrapped to VC-funded to profit-focused, I’ve grown revenue from £2m to £10m ARR, led turnarounds, and opened markets. I work hands-on as a fractional CRO, advisor, and coach. Strategy, leadership, and execution? I bring all three, and I deliver results that last.
Industry knowledge:
Climate tech | Adtech | Martech | Edtech | SaaS | Services
What I enjoy
I host a podcast for men in midlife, keep fit by going to the gym, and spending time with my family.
Our Values and Guiding Principles
No Rose-Tinted Glasses.
Transparency and honesty are at the core of our values. We do not sugarcoat the challenges our clients may face on their growth journey. Instead, we provide candid insights and realistic assessments to help them make informed decisions.
Impact
Matters.
While we are committed to working with companies across industries, we are particularly passionate about supporting businesses that are making a positive impact on the world. We believe that responsible growth and positive change go hand in hand.
Scaling Requires Reinvention.
Reaching the next inflection point often requires a shift in mindset and leadership approach. We encourage our clients to embrace change and reinvent their strategies for sustained growth.