Job description
Part-time: 20-30 hours per month
Details: Competitive hourly rate (Senior, Fractional). Long-term engagement if mutually successful
Job ID: 26FRA301
Fractional Product Systems Designer (Web + iOS) - Remote (U.S.- based)
Overview
Serious Development builds internal business applications at speed using: v0 for prototyping, Angular + PrimeNG for implementation, 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.
Why This Role Exists
We build internal business applications at speed using:
v0 for prototyping
Angular + PrimeNG for implementation
Native iOS apps that must feel like iOS, not web-on-a-phone
As our velocity increased, traditional screen-based design became unnecessary. What did become necessary is system-level UX ownership.
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. You will be designing how the product behaves over time.
Who You Are
Required
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
Strong Plus
Experience cleaning up inconsistent products
Familiarity with component-based design systems
Experience working with engineers directly
Prior fractional or advisory roles
Red Flags (for us)
Portfolio-first, system-light background
Strong preference for redesigns over convergence
Focus on “delight” over clarity and predictability
Reliance on Figma as the primary output
What You’ll Be Responsible For
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
Working within existing products
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
Web UX (Angular + PrimeNG)
Define how PrimeNG components are used (tables, forms, filters, modals)
Establish behavioral standards:
States
Errors
Permissions
Progressive disclosure
Prevent “almost-the-same” component variants
iOS UX (Native-first)
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
Partnering with PMs
Review v0 prototypes and early implementations
Provide fast, opinionated feedback
Help PMs reason through UX tradeoffs
Establish clear guardrails PMs can confidently operate within
What You Will Not Be Doing
Pixel-perfect mock production
Designing every feature or screen
Maintaining Figma parity with code
Visual branding or marketing design
Creating handoff artifacts for engineers
If your default output is screens, this is not the right role.
What Success Looks Like
UX feels consistent across modules and platforms
PMs move fast without inventing new patterns
Fewer usability questions from users
Faster onboarding with less training
No “why does this work differently over here?” moments
No large-scale UX rewrites six months later
How You’ll Work
Review-heavy, not production-heavy
Embedded early in feature thinking, not late-stage polish
Prefer rules, patterns, and written guidance over visuals
Use Figma only when a concept cannot be expressed clearly in text or prototypes
Code and prototypes are the source of truth.
Originally posted on Himalayas
Who can apply
Eligible countries: United States. Accepted UTC offsets: UTC-10, UTC-9, UTC-8, UTC-7, UTC-6, UTC-5, UTC+14. Review the full description for employer-specific work authorization, residency and schedule requirements.