Senior Software Engineer, Ruby on Rails

easybill GmbH

. Develop and enhance the easybill Connect e-commerce application using Ruby on Rails .

Posted 9/23/2026full-timeRemote • GermanySeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Ruby on Rails for backend development, with a strong focus on building and maintaining scalable e-commerce applications. Proficient in TypeScript and React for frontend contributions, alongside experience in data migrations and AI-assisted software development.

Highest-signal resume keywords

Ruby On Rails DevelopmentTypeScript And React ExperienceE-Commerce API IntegrationAI-Assisted Software DevelopmentData Migration And Refactoring

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Ruby On RailsTypeScriptReactE-Commerce APIsData MigrationRefactoringLegacy ModernizationInfrastructure ScalabilityPerformance OptimizationDevOps

Soft Skills

Independent And Proactive ApproachClear CommunicationCommitment To Quality

Tools & Technologies

Claude CodeChatGPT

Industry Keywords

E-CommerceMarketplaceShipping APIsInvoicing ProcessesTaxationAccounting

Tech Stack

Tools & technologies

ReactRubyRuby on RailsTypeScript

About the role

Key responsibilities & impact

Develop and enhance the easybill Connect e-commerce application using Ruby on Rails
Own complete features and projects, from technical design and implementation through to stable operation
Develop scalable backend solutions, robust integrations, and high-performance processes for marketplaces, shop systems, shipping, and e-commerce APIs
Contribute to frontend development with TypeScript and React as needed
Support data migrations, refactoring, and technical modernization with a focus on stability, maintainability, and quality
Systematically analyze errors and implement sustainable solutions
Use AI tools such as Claude Code for faster iteration, code reviews, context analysis, and increased productivity
Contribute your own ideas and help evolve engineering processes
Work closely with Product, UX, Support, and other engineering teams
Opportunity to contribute to UX, Product Management, or Infrastructure

Requirements

What you’ll need

Extensive software development experience and a strong understanding of how to reliably build, operate, and evolve modern web applications
Strong knowledge of at least one relevant backend stack, ideally Ruby on Rails; alternatively, the ability to ramp up quickly and systematically
Independent, proactive approach with a strong commitment to quality
Experience structuring technical topics, preparing decisions, and independently driving projects forward
Comfortable using AI tools such as Claude Code, ChatGPT, or similar solutions as part of your workflow
Willingness to try new tools, ways of working, and automation opportunities
Clear, dependable communication on an equal footing
Fluent German and good English
Ruby on Rails experience, TypeScript and React experience, and experience with e-commerce, marketplace, or shipping APIs are pluses
Knowledge of invoicing processes, taxation, or accounting is a plus
Experience with data migrations, refactoring, legacy modernization, infrastructure, scalability, performance, or DevOps is a plus
Experience with AI-assisted software development is a plus

Benefits

Comp & perks

Remote-first: Work anywhere in Germany from wherever you are most productive
Flexible working hours: 39-hour workweek with no 9-to-5 dogma
Modern equipment: High-quality work equipment, including a MacBook
30 days of vacation
Workation opportunities, including access to a villa in Mallorca
€1,500 annual budget for professional and personal development
Hackathons
Ownership from day one
JobRad at attractive rates
givve Card: Monthly tax-free benefits
Focus, responsibility, great tools, and high technical standards
Direct communication and a supportive engineering team