Upside. Company profile.

As CTO of Upside, I lead our technology direction. I work closely with our teams and clients, ensuring technical excellence and effective collaboration. Passionate about advancing technology, I also actively contribute to open-source projects.

Kacper Szarek-Winnik

Software Engineer

I value independence and seeing my code in real use. Daily client contact gives me real project impact. I work with great people and appreciate that the company supports my growth and helps me expand my skills.

Grzegorz Jędo

Project Manager

What I value most is working with people and building teams that collaborate toward shared goals. Agile helps me adapt quickly, improve processes, and stay focused on outcomes. Each day brings new challenges that drive my growth and keep me motivated

Tech stack

Python

Ruby

React

JavaScript

TypeScript

React Native

Take a closer look

Our Ongoing Story

We started 8 years ago with a simple goal: do great engineering work with people we value and respect. No investors, no hype-just thoughtful execution, strong client relationships, and a serious commitment to quality. We’ve grown steadily and deliberately ever since.

Culture at Upside

At Upside, we’re building something deliberate: a company where engineers thrive, where work is meaningful, and where people are treated as professionals. We provide high standards and high trust. It also means fast feedback, clear ownership, and a serious investment in craft as well as working alongside other curious, driven, thoughtful people - and expecting the same from them.

How Culture Shows Up Day-to-Day

At the core of how we work is direct, respectful communication - async-friendly and efficient. We value autonomy over micromanagement, with clear goals, high trust, and actionable feedback. Engineers work directly with clients, not behind account managers. We foster a learning culture with internal talks, pairing, reviews, and time for personal growth. Above all, we optimize for momentum over chaos, sustainability over burnout, and learning over perfectionism.

Collaborating with Global Leaders

We work with some of the world’s most respected organizations to deliver high-quality, high-impact solutions. From digital commerce and financial platforms to scientific research and AI systems, our teams solve complex challenges with long-term partners. You’ll be building things that matter, with clients who value real expertise.

Knowledge Sharing

We believe great engineering is a team sport. That’s why we’ve built a culture where knowledge flows freely - through pairing sessions, thoughtful code reviews, internal talks, and open discussions. Engineers learn from one another, challenge ideas, and improve together. It’s not about knowing everything - it’s about being surrounded by people who help you get better every day.

Open Source Software

We don’t just build software - we contribute to the ecosystem. Open source is part of how we work and how we give back. From maintaining libraries to launching new tools, we support engineers who want to share their ideas with the world. Whether it’s mentoring, blogging, or speaking at conferences, we encourage visibility and open collaboration at every level.