Senior Fullstack Software Developer (Smalltalk) | Senior Softwareentwickler (m/w/d) Fullstack (Smalltalk)

Schmitt GmbH

Frankfurt am Main, Hessen, Deutschland
Published May 11, 2026
Full-time
Permanent

Job Summary

As a Senior Fullstack Software Developer at Schmitt Engineering, you will play a pivotal role in designing, implementing, and customizing high-quality technical components. Your day-to-day responsibilities will include developing robust, scalable applications, conducting code reviews, and performing both manual and automated testing. You will be instrumental in maintaining technical standards, performing risk assessments, and advising internal departments on technology strategy. You will also manage the setup of development environments and ensure the long-term viability of IT systems. This role is ideal for a professional with a passion for high-end industrial technology who thrives in a collaborative environment using Pair Programming and Agile methodologies. You will work on diverse projects for high-tech industry clients, benefiting from a stable, permanent position in a company with over 30 years of expertise, offering flexible working models and a focus on professional development.

Required Skills

Education

Degree in IT (e.g., Business Informatics), completed vocational training with relevant practical experience, or comparable qualifications.

Experience

  • Professional experience in Smalltalk Visual Works development
  • Experience in object-oriented frameworks and OR-Mappers
  • Practical experience in writing and executing developer tests
  • Hands-on experience with Pair Programming, code reviews, and refactoring
  • Professional experience with Cloud infrastructures, Kubernetes, and Docker
  • Experience in technical risk assessment and requirement refinement

Languages

German (Fluent)

Additional

  • Valid work permit for Germany is required. German language proficiency of at least level B2+ is a mandatory prerequisite.