Software Engineer – Complex Interactions

TL;DR

Software Engineer – Complex Interactions: Building core interaction logic for cutting-edge design software with an accent on geometry, state management, and mathematical correctness. Focus on designing precise, predictable systems for complex editing flows, including transformations, snapping, and undo/redo.

Location: Onsite in Stockholm, Sweden

Company

hirify.global builds creative design software used by millions of people globally, with its main product SCRL being a design app focused on multi-touch interaction.

What you will do

• Solve challenging geometry and complex interaction problems for cutting-edge design software.
• Reason about coordinate spaces, transformations, scaling, rotation, and mirroring.
• Build logic for core interactions such as selection, dragging, resizing, snapping, and alignment.
• Create the underlying logic for advanced tools and layer types in the editor.
• Design state models that support complex editing flows, including undo/redo.
• Collaborate closely with design and product engineers to translate interaction ideas into precise behavior.

Requirements

• Strong experience building production software in any language or environment.
• Natural mathematical and geometric reasoning ability.
• Ability to design systems that are precise, predictable, and maintainable.
• Enjoyment of complex interaction problems rather than purely data-oriented ones.
• High standards for correctness and long-term code quality.
• Ability to explain and discuss technical decisions clearly.

Nice to have

• Background in competitive programming, physics, or mathematics.
• A history of excelling in math-heavy coursework.
• Interest in algorithms, data structures, and performance where they matter.
• Experience with design tools, creative software, or editors.

Culture & Benefits

• Ownership of core product behavior that users interact with every day.
• Work on technical and challenging problems that require careful thought.
• Join a small team that values clear reasoning and direct communication.
• Opportunity to build and ship products to millions of users across the world.
• Enjoy competitive compensation and opportunities for professional development.
• Work with great colleagues in the office in central Stockholm.