Senior Fullstack Software Engineer (Ruby/Typescript)

TL;DR

Senior Fullstack Software Engineer (Ruby/Typescript): Building and optimizing a core Rails application and integrating it with TypeScript/GCP services to streamline renewable technology installation processes for private homes and small businesses worldwide with an accent on code health, modern patterns, and long-term stability. Focus on leading technical implementation for complex projects, ensuring robust system integrations, and driving high-quality async collaboration.

Location: Remote (Germany-wide), with offices in Hamburg, Berlin or Munich.

Company

hirify.global is a CleanTech Unicorn building the energy system of the future with Heartbeat AI, aiming to transition 1.5 million households to renewable energies by 2030.

What you will do

• Develop and maintain the core Rails application with a focus on code health, modern patterns, and long-term stability.
• Lead technical implementation for complex projects within 6-week cycles, from architectural design to shipping.
• Build pragmatic connections between the Rails monolith and satellite TypeScript/GCP services.
• Proactively identify and resolve friction in tooling, CI/CD, and local environments.
• Drive high-quality async collaboration through clear documentation and comprehensive code reviews.

Requirements

• Proven experience writing maintainable, reusable, and testable code with Rails and other major backend or fullstack technologies.
• Experience designing and maintaining RESTful APIs and measuring/improving performance.
• An agile and result-oriented mindset and a passion to support your team colleagues.
• Excellent knowledge of spoken and written English.
• Residency in Germany is required.

Culture & Benefits

• You are part of an international, dynamic, and highly motivated team accelerating the "energy transition".
• Work with and learn from other super-smart colleagues and enjoy direct contact with core decision-makers.
• Enjoy the best chances of entering full-time in one of Europe’s most thriving scaleups.
• You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich.
• Create a healthy balance and enjoy all the benefits of the EGYM Wellpass and Futurebens discounts.
• Be flexible with our job bike leasing and do something good for the environment.