They said operating systems should be invisible. We said no, they should be felt. Felt like precision, like calm, like an interaction with a machine that understands you. SP exists to rewrite the relationship between human and machine, to make technology breathe again.
As Lead System UX Architect, you are the conductor of the sensory orchestra that is SP. You see the entire system, not as scattered applications, but as a single living organism, pulsing with consistency and grace.
You will define how every pixel, gesture, and interaction reflects our fundamental values: privacy, freedom, sovereignty and pure functional beauty.
You are the bridge between engineers, designers, and philosophers. You'll build frameworks of interaction logic, ensuring that performance and usability are twin faces of a single, seamless experience.
Key responsibilities
- Lead the conceptual and strategic UX direction for the SP operating system.
- Architect end-to-end interaction frameworks that prioritise user sovereignty and privacy.
- Design and maintain the SP Design System, ensuring absolute consistency across all system layers.
- Collaborate with engineering teams on low-level usability and performance optimisation.
- Translate complex technical system behaviours into intuitive, poetic user flows.
- 10+ years of experience in UX/Product Design for complex systems or platforms.
- Strong grasp of cognitive ergonomics, micro-interaction design, and motion theory.
- Exceptional understanding of cross-platform interface logic and multi-environment continuity.
- Proven leadership in managing design systems for large-scale software ecosystems.
- Knowledge of GPU-based compositing, gesture systems, and haptic feedback design.
- Background in psychology, behavioural science, or architecture.
- Contributions to open-source UX frameworks or design philosophy.
Tools & Technologies
- Qt, Flutter, or experimental C++/Rust front-end layers.
- Design validation integrated with system telemetry.
- Git-based internal OS experience libraries.
Duration & Time Commitment
Full-time. Long-term
- Bonus potential + equity stake.
- Relocation to Brighton, UK.
- Creative sanctuary budget for research, travel, and prototyping.
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Lead System UX Architect in Brighton employer: Parcks Inc.
At SP, we believe in crafting experiences that empower users and restore dignity, making us an exceptional employer for a UX Designer. Located in Brighton, our hybrid work culture fosters creativity and collaboration, offering full autonomy in design while prioritising employee well-being with a private workspace budget and wellness stipend. With a commitment to meaningful design and a focus on personal growth, we provide opportunities for you to shape the future of digital humanism in a supportive and innovative environment.
