Eric Büttner

Took over full platform responsibility during a critical transition period, ensured system stability with minimal resources, and reduced cloud infrastructure costs by 40%. Building up the product and engineering department and establishing data-driven reporting to support operational business.

Founded an SMB-focused software studio based in Eberswalde, serving clients primarily from Berlin and the surrounding area. Built the practice on CTO-as-a-Service engagements, in-house IT infrastructure advisory, and hands-on operational training sessions (e.g. database backup strategies), and evolved into project-based custom software development.

Led 6 cross-functional engineering teams (~24 engineers) and drove the migration from CRUD-based microservices to an event-driven DDD/CQRS architecture. Designed 'The Kraken' for zero-downtime live data sync between legacy and new systems.

Managed a cross-functional product team focused on lead qualification and scheduling systems while stabilizing the core PHP monolith during the early phases of microservice adoption. Mentored multiple engineers into leadership and specialist roles.

Oversaw all non-mobile development teams including product engineers and DevOps, managed workload distribution and roadmap planning, and served as single point of contact for BNP Paribas Real Estate Germany.

Took on architectural decisions and deployment ownership while maintaining a dynamic white-label website system for real estate agents. Introduced semi-automated GitLab CI/CD deployment flows and transitioned into an informal leadership role.

Started as a trainee and grew into a full stack developer, leading the development of a dynamic real estate website product. Introduced GitLab CI, Docker-based deployments, and mentored working students who later joined full-time.

Contributed to a custom CMS built with CakePHP for real estate content delivery and took ownership of a SOAP-based content-distribution product.

Developed custom client websites using WordPress and co-built a lightweight in-house PHP framework to accelerate project delivery, translating designer mockups into responsive web solutions.

Built websites from Photoshop designs and contributed to a proprietary PHP framework for the 'Finest Address' digital business directory platform.

Applied self-taught programming skills in a hands-on internship, building client websites with HTML/CSS, PHP, and JavaScript.