Senior UI Engineer — AI-Driven Frontend + C# Backend

Nerdio; Poland; On-site; PLN 298,000 - 372,000; Full time

Benefits offered by this job

Stock Options

Health and Welfare Plans

Life and Disability Plans

Retirement Plan

Unlimited Flexible PTO

Job summary

Nerdio is seeking a Senior Software Engineer to design and build a new platform from scratch, focusing on the UI and also contributing to C# backend services. You will translate Figma designs into clean, production-ready front-end code and collaborate with AI tooling to accelerate development.

You’ll work closely with Claude Code, implement robust UI components, and shape a scalable, reliable product from day one in a fast-moving, collaborative environment.

Qualifications

• 5+ years of professional software development experience with strong proficiency in TypeScript and a modern front-end framework (React or equivalent).
• Experience implementing pixel-accurate UIs from Figma, with responsive layout and design-token fidelity.
• Strong C# backend experience to own services and APIs.
• Experience with REST/GraphQL API design and data modeling.
• Hands-on experience using Claude, ChatGPT, Copilot in production workflows.
• Strong debugging and performance tuning across browser and backend services.

Responsibilities

• Implement UI from Figma and Claude-generated templates into production-ready components.
• Collaborate with UI/UX designer to translate designs while respecting constraints.
• Design and build C# services and APIs to support the UI.
• Establish AI-native development workflows using Claude Code and Claude API.
• Implement monitoring, telemetry, and diagnostics for reliability.
• Drive root-cause analysis across full stack as the system evolves.

Skills

TypeScript & React

Pixel-perfect UI

C# backend

REST/GraphQL

AI coding tools

Debugging & performance

Ambiguity tolerance

Tools

Claude Code

Claude API

Copilot

Figma

Job description

Nerdio is seeking a Senior Software Engineer to design and build a new platform from scratch, focusing on the UI and also contributing to C# backend services. You will translate Figma designs into clean, production-ready front-end code and collaborate with AI tooling to accelerate development.

You’ll work closely with Claude Code, implement robust UI components, and shape a scalable, reliable product from day one in a fast-moving, collaborative environment.