Fullstack Engineer

sonnen GmbH

Fullstack Engineer developing Ruby on Rails based services for clean energy company sonnen. Participating in entire development process and collaborating with cross-functional teams.

Posted 7/13/2026full-timeCairo • 🇪🇬 EgyptJuniorMid-LevelWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack development with Ruby on Rails, RSpec, and GraphQL, while effectively collaborating in an Agile environment. Proficient in CI/CD processes and backend infrastructure management, ensuring high-quality code and deployment practices.

Highest-signal resume keywords

Ruby On RailsRSpec FrameworkGraphQLCI/CD ProcessesAWS

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Full-Stack DevelopmentMicro-Services ImplementationRESTful EndpointsHotwireTest Case Development

Soft Skills

Open-MindednessEffective CommunicationFeedback Exchange

Tools & Technologies

GitLabGitHubDatadog

Industry Keywords

Agile DevelopmentSoftware Delivery LifecycleObject-Oriented Patterns

Tech Stack

Tools & technologies

AWSGraphQLRSpecRubyRuby on Rails

About the role

Key responsibilities & impact

Participate in the entire development process, including refinements, code reviews, tests, deployment and monitoring on production.
Maintain and extend our Ruby on Rails based services.
Implement user friendly frontends using modern technologies including Hotwire.
Build and maintain GraphQL interfaces and RESTful endpoints (JSON:API).
Convert acceptance criteria into test cases written in RSpec framework.
Write new and update existing documentation entries.
Contribute to the implementation of micro-services.
Push and follow up on builds and deploys, using CI/CD pipeline tools.
Collaborate with a development team on the planning and implementation of tasks, troubleshoot of issues, and refactoring.
Interpret log messages and mitigate errors coming from our monitoring tools.
Collaborate closely with cross-functional teams in an Agile development environment, familiar with a Software Delivery Lifecycle following Scrum practices.

Requirements

What you’ll need

2+ years of full-stack experience with Ruby on Rails, RSpec and GraphQL
Proficiency with CI/CD processes (GitLab/GitHub), backend infrastructure (AWS) and monitoring tools (Datadog).
Keen on following architectural paradigms & object-oriented patterns.
Open-minded to follow instructions from other senior developers.
Outspoken and see feedback exchange as a normal part of your everyday work.
Comfortably express your ideas and arguments in good spoken and written English.

Benefits

Comp & perks

Flexible working hours
Professional development opportunities