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1K1KOMMA5°

Senior Fullstack Software Engineer - Ruby/ Typescript(m/w/x)

Hamburg, Berlin, München
Full-timeWith Home OfficeSenior
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Developing core Rails application for AI-based platform enabling CO2-neutral energy systems. Strong Rails and back-end technologies experience required. Direct climate impact, scaleup career opportunities.

Requirements

  • Experience with Rails and back-end technologies
  • Experience with RESTful APIs
  • Performance measurement and improvement skills
  • Agile mindset and team support passion
  • Interest or experience in human-centered development
  • Excellent English and optional German knowledge
  • Residency in Germany
  • Imaginative, enthusiastic, and challenge-oriented personality
  • Experience with Rails and back-end technologies
  • Experience with RESTful APIs
  • Performance measurement and improvement skills
  • Agile mindset and team support passion
  • Interest or experience in human-centered development
  • Excellent English and optional German knowledge
  • Residency in Germany
  • Imaginative, enthusiastic, and challenge-oriented personality

Tasks

  • Develop and maintain the core Rails application
  • Focus on code health and modern patterns
  • Lead technical implementation for complex projects
  • Manage projects from architectural design to shipping
  • Integrate Rails with TypeScript and GCP services
  • Optimize tooling, CI/CD, and local environments
  • Drive high-quality asynchronous collaboration
  • Write documentation and architectural decision records
  • Perform comprehensive code reviews
  • Build and run self-organized tech solutions

Work Experience

  • approx. 4 - 6 years

Education

  • Bachelor's degreeOR
  • Master's degree

Languages

  • English – Business Fluent
  • German – Basic

Tools & Technologies

  • Rails
  • RESTful APIs

Benefits

Informal Culture

  • International and dynamic team
  • Contact with decision-makers

Sustainability Focus

  • Direct climate impact

Mentorship & Coaching

  • Learning from smart colleagues

Startup Environment

  • Scaleup career opportunities

Healthcare & Fitness

  • EGYM Wellpass access

Corporate Discounts

  • Futurebens discounts

Company Bike

  • Job bike leasing
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