About 45level - We close the gap between ideas and impact

Who We Are

We are a multidisciplinary team of process and domain experts, engineers, developers, designers, and scientists who know that modern digital business isn't driven by slides or tools, but by next-level business engineering – turning ideas into valuable, working solutions and effective processes that your organization can adopt and leverage. We combine strategic thinking, technical excellence and flawless execution under one roof – no handovers, no excuses, just results.

Certifications & Recognitions

ISO 9001 Certified
ISO 27001 Certified
EcoVadis Certified

What Sets Us Apart

  • We Walk the Talk. We don't just advise — we build. Our in-house ventures prove that our methods work in the real world. Every recommendation comes from lived experience, not theory.
  • No Handover Drama. Strategy, technology and delivery live under one roof. No finger-pointing, no excuses, just results. One team, one goal, complete accountability.
  • Battle-Tested Expertise. Our team has delivered hundreds of projects for companies ranging from ambitious startups to DAX-listed enterprises. We've seen what works and what doesn't.
  • Global Talent, Competitive Economics. We combine senior expertise from Germany with a world-class engineering center in Sarajevo. You get premium quality without premium-only pricing.
  • Modern Tech, Proven Practices. We work with cutting-edge technologies — cloud-native platforms, AI/ML, modern data stacks — but always grounded in sound engineering principles and business pragmatism.
  • You Own Everything. All IP is yours. No vendor lock-in, no proprietary black boxes. We build your capability, not your dependency.

Core Team

Meet the people who turn vision into results - from architecture to execution.

Thomas Zeutschler

Thomas Zeutschler

Principal Business Engineer

With 25 years in digital transformation, business engineering and Data & AI, Thomas defines strategy and architecture for client engagements and drives 45level's vision of seamless, end-to-end delivery.

Adin Popranovic

Adin Popranovic

Head of Delivery & Client Engagement

Adin leads project delivery and orchestrates execution at our Rubicon Engineering Center. As the primary client partner, he ensures alignment, transparency and delivery excellence across every engagement.

Emir Kalauzovic

Emir Kalauzovic

Lead Software Architect & Product Innovation

Technologist, entrepreneur and creative force, Emir heads engineering at Rubicon – designing and building secure cloud platforms and AI-driven solutions that fuse technical depth with visionary design thinking.

Nadir Badnjevic

Nadir Badnjevic

Principal Solutions Architect

With over 13 years of experience, Nadir designs and delivers commercial software from concept to deployment. At Rubicon he leads cross-functional teams with precision and creativity to turn complex requirements into successful solutions.

Holger Leichsenring

Holger Leichsenring

Principal Cloud Architect & Infrastructure Strategy

Holger architects enterprise-scale cloud environments that unite performance and pragmatism. His mastery of distributed systems and cloud-native infrastructures turns complexity into clarity.

Leonard Zeutschler

Leonard Zeutschler

Lead AI Engineer & Applied Research

Leonard specializes in Agentic AI, Large Language Models and applied machine learning. He bridges advanced research and real-world implementation to create AI systems that deliver measurable business impact.

Engineering Center Sarajevo

Our engineering center in Sarajevo, Bosnia & Herzegovina, is home to more than 50 passionate engineers, architects, designers and QA specialists — united by a shared drive to build great software. Recognized as one of the region's most respected tech workplaces, Rubicon attracts exceptional talent through its culture of trust, collaboration and continuous learning.

Led by experienced project managers and senior engineers, our teams work with modern technologies including .NET, Java, Python and TypeScript — on premises and across all major cloud platforms. They combine precision, creativity and technical depth to deliver solutions that meet the highest standards of quality, performance and intuitive user experience – from web and mobile applications to cloud, data engineering and AI-powered systems.

Supported by Sarajevo's strong technical universities, an emerging tech ecosystem and a vibrant local community, our team combines deep expertise with the spirit of a rising region — delivering world-class results with speed, efficiency, integrity and passion.

Extended Expert Network

To solve any challenge, we tap into a trusted network of best-in-class business domain and technology experts – from industry consultants to regulatory and change-management specialists. This flexible model ensures we bring the right expertise at the right time, without the overhead of a large, fixed organization – maintaining agility, quality, and full 45level ownership throughout every engagement. This approach allows us to scale instantly and tailor every project to the client's specific goals — without losing focus, speed or accountability.

Ready for next level results?

Our offices

  • Essen, Germany
    (Headquarter)
  • Sarajevo, Bosnia & Herzegovina
    (Rubicon Engineering Center)