Two decades ago, Railsware began as a spark of CEO Yaroslav Lazor’s vision. Over the years, it has grown into a company with a distinct culture, scale, and product philosophy — thanks in large part to the leadership and influence of Sergiy Korolov.
Sergiy is a seasoned tech entrepreneur with a deep belief in the power of product thinking. For him, building digital solutions is more than just adding trendy features or code. It’s about crafting tools that transform businesses. Equally important, he invests in building a community where Railswarians can be themselves, stay curious, push boundaries, and grow together.
Over the years, Sergiy has shared his knowledge far and wide through webinars, podcasts, and industry events. To help you tap into his insights, we’ve gathered a selection of his most impactful talks and resources below.
An interview with Sergiy Korolov on Disruptions and Innovations on Authority Magazine
Here you will find:
- Lessons that shaped Sergiy’s leadership style;
- Meaning of industry disruption at Railsware;
- Practices how to navigate resistance of ideas;
- 5 approaches to disrupt the industry;
Development culture article on Bulldog
In the article you will learn:
- The importance of development culture;
- Key aspects that form great development culture;
- Why is culture of feedback essential for building;
Engineer to Manager podcast
Listen the full episode to find out:
- What is an engineer mindset;
- What are key skill sets for team leaders and new developers;
- How to transfer from engineer;
- What to focus on to stay in the industry for next 10 years;
MAN.Digital podcast with Sergiy Korolov and Yaroslav Lazor
Here’s what you can expect from the discussion:
- How building great products start from building a great team;
- Why there are no silver bullets in product development;
- How to combine sparks of genius with hard work on your way.
UpYourStack podcast: Turning Data Chaos into Actionable Insights
Here, Yaroslav and Sergiy discuss the following:
- Why most businesses struggle with data accuracy;
- How Coupler.io eliminates human error in reporting;
- The biggest gaps in HubSpot analytics and how to fix them;
- Why data is useless unless it’s actionable.
Founder’s story: What Most Founders Get Wrong About Scaling
Here, Yaroslav and Sergiy discuss:
- What ‘luck’ really means in business;
- How big can you scale leveraging AI;
- What are the common traits and principles of successful SaaS entrepreneurs.
Code Story: Insights from Startup Tech Leaders
Here’s what you can expect from the discussion:
- Lessons from personal growth that influenced leadership;
- Why they moved from client projects to building their own products;
- Key challenges and insights from starting Railsware.
The Digital Project Manager: How Calendly Is Using AI to Deliver Without PMs
Here, our Product Director Juliia and co-CEO Sergiy discuss:
- Why removing traditional delivery roles doesn’t mean removing leadership;
- How AI can be a force multiplier;
- What Railsware’s “guilds and squads” model teaches about scalable collaboration;
- How mature teams and public communication norms make AI more useful;
- The limits of current AI tools and why human judgment still matters.
SaaS Club: Product-Led Growth Strategy: How Mailtrap Hit 7-Figures
Here you will find:
- How a massive 20,000 email mistake birthed a global SaaS product;
- Why forcing users to answer questions during signup actually helped growth;
- How to transition a free community tool into a profitable recurring revenue business;
- How to build a product that developers naturally share (PLG).
Code Story: Vibe Coding vs. Traditional SDLC
Here are the questions you will hear during the discussion:
- How would you define “vibe-coding” and how does it differ from traditional software development approaches?
- What drove the emergence of vibe-coding? Could it be a response to overly rigid development processes that many companies have?
- Is it possible to create successful and scalable products through vibe-coding?
Code Story: Delivering Value through BRIDGeS
Here, Sergiy discusses:
- What’s the difference between shipping features and delivering value, and why do so many product teams get it wrong;
- How does Railsware’s BRIDGeS framework help teams align and focus on value delivery;
- What role does user research and validation play in the BRIDGeS approach;
- What’s the biggest challenge teams face when moving from feature delivery to value delivery.