Senior Software Development Engineer - UI/UX

About this role

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Development Engineer - UI/UX based in the United States.

Join a mission-driven engineering team developing advanced cybersecurity solutions that help protect critical infrastructure from evolving digital threats. In this senior engineering role, you will build and maintain intuitive web applications, robust APIs, and client SDKs that help security professionals identify and understand exploitable software vulnerabilities. You will work across frontend development, API architecture, and developer tooling, contributing throughout the entire software delivery lifecycle. Collaborating closely with Product, Design, and backend engineers, you will translate complex technical data into clear, accessible user experiences. You will also help ensure that APIs and SDKs remain reliable, secure, and compatible as the platform evolves. This remote-first opportunity is ideal for an experienced engineer who values technical ownership, thoughtful collaboration, and meaningful real-world impact.

### Accountabilities:

As a senior member of the engineering team, you will take ownership of production-ready features and help improve the performance, reliability, and usability of the platform. Your responsibilities will include:

• Design, develop, test, and deploy features across a React and TypeScript frontend and the supporting GraphQL and gRPC APIs.
• Lead feature development from initial scoping and design through implementation, release, and production troubleshooting.
• Design and evolve GraphQL schemas and Protocol Buffers/gRPC contracts, maintaining appropriate versioning and backward compatibility for existing customers and integrations.
• Build and maintain client SDKs in Python, TypeScript, and Go, including code generation pipelines, semantic versioning, and automated release processes.
• Define clear API and integration cont...