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Salary
$81k – $178k per year (Estimated)
Location
Remote (United Kingdom)
Seniority
Middle · 3+ years exp
Overview
Company
Impact
Profile match
You own quality and test automation at Cashen. You will build the QA infrastructure from the ground up - automated test suites, CI integration, regression coverage, and release validation - for a platform where bugs have financial consequences. A missed edge case in a deal state transition or an interest accrual rounding error doesn't just degrade UX - it moves money incorrectly between institutional counterparties.

Superis Labs is building a high-performance perpetual futures DEX on Solana. The first production MVP is underway, and early team members will define protocol UX/UI design.

The company is fully backed by ergonia, a crypto-native market-making firm with deep experience trading and building on Solana.

We are starting from a deliberately minimal core and iterating rapidly toward a full-featured mainnet exchange. This is a high-ownership role building production systems under aggressive timelines.

What You’ll Work On

Own the end-to-end design of a professional-grade perpetual trading experience. You’ll be the first dedicated design hire, shaping every interaction - from wallet connection and onboarding to order entry, position management, and portfolio views.

Responsibilities

  • Design the core trading interface: markets, order entry, positions, balances, charts
  • Create clear, intuitive solutions for complex trading workflows - margin, liquidation states, funding rates, P&L
  • Build and maintain a scalable design system with reusable components and patterns
  • Own the full design process from research and ideation through prototyping and production handoff
  • Partner closely with frontend and protocol engineers to ensure high-quality implementation
  • Produce detailed specs and documentation to guide development
  • Review shipped work and QA design assets for quality and consistency
  • Conduct user research to identify pain points and optimization opportunities
  • Support the marketing team with brand assets

Requirements

  • 3+ years of product design experience with a strong portfolio
  • Strong interaction and visual design skills with attention to detail
  • Ability to take complex, data-heavy concepts and make them intuitive
  • Proficiency in Figma (or similar) and components, shared libraries, auto-layout, prototyping
  • Strong communication skills - able to articulate design decisions clearly
  • Self-directed and comfortable in a fast-paced, early-stage environment
  • Experience designing trading interfaces, orderbook UIs, or financial products
  • Strong English communication skills

Bonus Points

  • Understanding of perpetual futures, margin trading, or DeFi mechanics
  • Experience with Solana or blockchain-based product design, including wallet flows
  • Familiarity with how frontend technologies (HTML, CSS, React) impact design decisions
  • Experience with motion design or prototyping tools like Framer (or other)

Benefits

  • No bureaucracy - just fast shipping and real impact
  • High ownership and real impact from day one
  • Competitive base + meaningful token/equity upside
  • Early team members receive ownership aligned with long-term protocol success
  • Fully remote
  • IRL meetups and company offsites
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