Fractional Product Systems Designer (Web + iOS) - Remote (U.S. Based)
About The Position
Serious Development builds internal business applications at speed using v0 for prototyping, Angular + PrimeNG for implementation, and Native iOS apps that feel like iOS, not web-on-a-phone. We are seeking a Fractional Product Systems Designer (Web + iOS) to design how our products behave over time. This role exists to ensure our products remain predictable, consistent, native to their platforms, easy to learn, and hard to misuse. You will not be designing every screen, but rather how the product behaves over time. The role is review-heavy, not production-heavy, embedded early in feature thinking, not late-stage polish. We prefer rules, patterns, and written guidance over visuals, and use Figma only when a concept cannot be expressed clearly in text or prototypes. Code and prototypes are the source of truth.
Requirements
- Senior-level product or systems designer
- Experience with internal or enterprise applications
- Strong systems thinking; comfortable defining rules and constraints
- Deep familiarity with iOS as a platform (not just mobile UI)
- Comfortable challenging PMs and saying “don’t ship that”
- Pragmatic, opinionated, and not precious about visuals
Nice To Haves
- Experience cleaning up inconsistent products
- Familiarity with component-based design systems
- Experience working with engineers directly
- Prior fractional or advisory roles
Responsibilities
- Product-wide UX coherence
- Own interaction patterns across the product
- Ensure similar problems are solved the same way
- Reduce inconsistency as new modules are added
- Prevent UX drift as multiple PMs and teams ship in parallel
- Audit current applications and patterns
- Identify what already works and should be preserved
- Drive convergence — not redesign-for-the-sake-of-redesign
- Respect user muscle memory
- Define how PrimeNG components are used (tables, forms, filters, modals)
- Establish behavioral standards for states, errors, permissions, and progressive disclosure
- Prevent "almost-the-same" component variants
- Ensure strict alignment with Apple Human Interface Guidelines
- Catch web/Android patterns leaking into iOS
- Enforce native navigation, gestures, and control usage
- Prioritize platform correctness over internal consistency when they conflict
- Review v0 prototypes and early implementations
- Provide fast, opinionated feedback
- Help PMs reason through UX tradeoffs
- Establish clear guardrails PMs can confidently operate within
Benefits
- Competitive hourly rate (Senior, Fractional)
- Long-term engagement if mutually successful
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What This Job Offers
Job Type
Part-time
Career Level
Senior
Education Level
No Education Listed
