Location
Remote (United Kingdom)
Seniority
Middle · 3+ years exp
Employment
Full-Time
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 core architecture and protocol 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
Build the frontend systems that deliver a professional-grade perpetual trading experience, with a focus on performance, reliability, and clarity.
Responsibilities
- Build the core web trading interface: markets, order entry, positions, balances, charts
- Integrate Solana wallet flows and backend services into real-time UI systems
- Implement low-latency data streaming and state management
- Optimize frontend performance for high-frequency user interaction
- Collaborate closely with designers, backend engineers and protocol engineers on system design
- Write tests and maintain clear documentation
- Own features end-to-end from design to production
Requirements
- 3+ years of professional software development experience
- Strong proficiency with modern frontend frameworks (React, TypeScript, etc..)
- Experience building complex, data-intensive web applications
- Strong attention to UI/UX detail
- Familiarity with DeFi, trading, or financial applications
- Ownership mindset and comfort in an early-stage environment
- Strong English communication skills
Bonus Points
- Experience building trading interfaces or orderbook-style UIs
- Experience integrating Solana wallets and transaction flows in web apps
- Familiarity with perpetuals, margin trading, or funding mechanics
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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