Frontend Engineer — Precision 2D Geometry Editor

Synaps; Österreich; Remote; EUR 65,000 - 105,000; Full time

Benefits offered by this job

Relocation and visa support

Five weeks paid vacation

Competitive compensation

Flexible, trust-based work setup

Device of choice

Job summary

Synaps is building a new standard for architectural design with AI. The editor is our core product, and we’re looking for an engineer who knows how these systems actually work: geometry, state machines, precision tooling, and fast interaction loops.

You’ll own the interaction logic behind our 2D editor, the part that makes drawing feel precise, fast, and predictable. This role focuses on the brains of the editor: geometry, state, and user interaction, with a stack including React/TypeScript,

Qualifications

• Strong experience building interactive, tool-driven products: Figma-like editors, CAD tools, GIS systems, game editor tooling, or anything with real-time manipulation.
• Comfortable with applied geometry: intersections, projections, angle constraints, and vector math.
• Understanding of linear algebra at the level needed for precise 2D interactions.
• Ability to implement or adapt known algorithms.
• Experience with XState or similar state machine architectures.
• Familiarity with spatial data structures for fast interaction.
• Disciplined about performance, correctness, and UX feel.

Responsibilities

• Own the interaction logic behind our 2D editor, making drawing precise, fast, and predictable.
• Implement tools for polylines, walls, windows, openings, and constraints.
• Develop snapping, intersections, guides, and measurement tools.
• Ensure reliable undo and redo.
• Support collaborative editing via CRDTs (Loro).
• Work with spatial indexing for performance (rt-trees and similar).

Skills

Interactive tools

Applied geometry

Linear algebra

State machines

XState

Spatial data structures

Performance & UX

Tools

React

TypeScript

Jotai

Loro CRDT

Job description

Synaps is building a new standard for architectural design with AI. The editor is our core product, and we’re looking for an engineer who knows how these systems actually work: geometry, state machines, precision tooling, and fast interaction loops.

You’ll own the interaction logic behind our 2D editor, the part that makes drawing feel precise, fast, and predictable. This role focuses on the brains of the editor: geometry, state, and user interaction, with a stack including React/TypeScript,