Senior Backend & Web App DevEx Engineer (Remote)

Runware; Belgium; Remote; EUR 80,000 - 110,000; Full time

Benefits offered by this job

Generous PTO

Stock options

Remote-first setup

Flexible hours

Family leave

Company retreats

Job summary

Runware is seeking a Senior Software Engineer to build and evolve systems and APIs powering our Web App and Developer Experience. You will collaborate with backend and frontend teams, product, and design to deliver reliable APIs and production-ready features.

You’ll own backend work from requirements to delivery, shaping technical decisions and contributing to robust, scalable systems while maintaining a strong focus on quality, security and performance.

Qualifications

• Backend API design and implementation
• Experience building reliable production systems
• Strong understanding of API design and distributed systems
• Security, performance and reliability focus

Responsibilities

• Build and maintain internal and developer-facing APIs and services powering Runware's Web App and DevEx
• Develop and evolve public API functionality including task types, validation, routing, and WebSocket/REST behavior
• Own and maintain the Admin API and panel as an internal platform used across Runware
• Work with usage, billing and customer data to ensure accuracy and reliability, including Stripe
• Investigate and resolve production issues and security vulnerabilities affecting the Web App and APIs
• Write, test and review clean, maintainable code with strong engineering practices
• Clarify requirements with Product/Design and define well-scoped technical solutions
• Contribute to technical decisions across frontend and backend boundaries with the wider Backend team

Job description

Runware is seeking a Senior Software Engineer to build and evolve systems and APIs powering our Web App and Developer Experience. You will collaborate with backend and frontend teams, product, and design to deliver reliable APIs and production-ready features.

You’ll own backend work from requirements to delivery, shaping technical decisions and contributing to robust, scalable systems while maintaining a strong focus on quality, security and performance.