N+1 Years of
Building
Trust.

The Evolution

From Software Engineer to AI-Native Product Engineer

Hey 👋 I'm Bart Sitek. I started out like most engineers, knee-deep in code, chasing the next feature and the next launch. It was exciting, messy, and a crash course in how the real world works.

Over 15 years, I went from writing JavaScript at small startups to architecting Adidas Japan's $196M e-commerce platform and leading engineering for Toyota's $10B Woven City project.

At every step, I saw the same pattern. The code mattered, but the biggest wins came from fixing the work around it: the process, the handoffs, the decisions nobody owned.
Then AI changed the math. What used to take a whole team, one experienced engineer can now ship, if they know where AI helps and where it quietly breaks things.

So I rebuilt how I work around it, from the first idea all the way to production. AI is in how I plan, build, test, and ship, and the judgment from Adidas and Woven City keeps it aimed at the right problem: new products, faster and cheaper-to-run systems, automated busywork, and teams learning to work with AI every day.

Because in the end, more software isn't the point. Making your business run like it should have all along is.

The Versatility

If it matters, I'll figure it out and make it happen

I've worn a lot of hats — and not just the developer kind. I've led teams, published research, built products, and grown communities from scratch.

When NASA opened the floor to new ideas, I co-authored a paper on the Conceptual Design of an Amphibious Tiltrotor for Rescue Operations. It was published in the scientific journal — a project that combined engineering, research, and a love for pushing boundaries.

I'm PMP® certified, which means I can run projects as well as I can code them. I'm fluent in the art of translating between technical and non-technical worlds, making sure ideas survive the handoff.

I've worked across disciplines, industries, and cultures, adapting my approach to people and problems.
Outside the office, I've built aerospace networks with over 10,000 members, connecting engineers, enthusiasts, and industry experts across the globe. I also founded Instatrip — a travel-photo mapping startup that turned Instagram posts into shareable trip maps. It was even used by then-President of Costa Rica, Laura Chinchilla, to chart her official travels.

My work and tools have been featured in Computerworld, Softpedia, Smashing Magazine , and even made the front page of Hacker News. This mix of technical depth, leadership, and community-building means I can operate at every level — from big-picture strategy to the code that makes it real.

It's all part of the same goal: delivering work that matters.

The Experience

From Sony Music to Woven City. You are in good company.

My career has taken me from designing websites for Grammy-winning artists to leading engineering for one of the most ambitious smart city projects in the world.

I cut my teeth building online platforms for Sony Music, EMI, and Columbia Records — crafting official sites for Katy Perry, Foster the People, Tinie Tempah, and others. These were high-profile, high-traffic launches where deadlines weren't suggestions — they were law. It taught me how to deliver under pressure, and how to design systems that could handle the spotlight.

From there, I shifted into the world of startups and scale-ups in Tokyo. I worked on e-commerce systems, SaaS platforms, and data-heavy applications, taking on everything from front-end polish to deep backend architecture.
That path led me to Adidas Japan, where I helped scale a $196M e-commerce operation — improving conversion rates, cutting infrastructure costs, and streamlining development so new features shipped faster.

Then came Toyota's Woven City — a $10B vision for the city of the future. I led a six-person engineering team, built systems from scratch, and established the technical foundation for tools and services used across the project.

Every step along the way, the thread has been the same: solving real problems with technology that works. Whether it's a global music label, a sportswear giant, or a city of the future, my focus has been on delivering solutions that last.

And if we work together, yours will too.
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Sony Music

Delivered and maintained high-traffic artist sites and internal label tools for EMI, Columbia, and Sony Music. Built scalable platforms for stars like Katy Perry, Foster The People, and Tinie Tempah — ensuring speed, performance, and seamless label integration.

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Ericsson

Led the build of a big data platform processing tens of millions of rows, cutting load times by 70% with compression and caching. Guided a 4-person dev team delivering scalable SPA solutions for telecom clients — boosting speed, reliability, and maintainability.

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Google

Cracked some of Google’s toughest security puzzles in their global Capture the Flag — earning a Hall of Fame spot alongside the world’s top hackers. One weekend, hundreds of challenges, and a seat at the table with those who keep billions safe online.

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Adidas Group Japan

Redesigned and optimized the e-commerce platform driving $196M in annual sales. Streamlined dev workflows, improved performance, and built tools that cut support requests nearly in half — keeping Japan’s largest Adidas store running fast and smooth.

Bring me the problem. I'll get it moving.

Every stuck project, broken process, and technical bottleneck is costing you time, momentum, and opportunity.