Own and build the JTX frontend across web and mobile: real-time order books, charts, order entry, positions, wallet/signing flows. Optimize for low-latency streaming data, performance, security, and cross-platform consistency while making long-term architectural decisions and shipping rapidly.
JTX is our trading app, and it runs on the fastest market infrastructure on Solana, which we also built. What nobody has done yet is make that speed something a trader can feel. That is this job.
JTX is live. Two frontend engineers built it to this point and you would be the third. The work now is one to a hundred: harden what exists, make it hold up under real volume, expand onto mobile, and raise the ceiling on every screen a trader touches.
We're a small team with product-market fit. That means:
- High ownership: every team member drives significant technical decisions and shapes our product roadmap.
- Fast execution: we ship rapidly and iterate based on real-world feedback. Progress, not motion.
- High quality bar: the details are the product. We don't trade them for speed.
About the Position
You'll own the surface of JTX across web and mobile: order entry, market data, charts, positions, execution quality, onboarding, and the wallet flows underneath all of it.
The role suits a generalist with strong taste. You'll partner with design, product, and the infrastructure team, and you'll make architectural calls that stick for years. If you've spent time thinking about how markets actually work on Solana and want to build the product layer on top of that, this is the role.
Stack: React 19 + TypeScript on Next.js. Jotai + TanStack Query. Tailwind with a token-based design system. TradingView Advanced Charts on our own datafeed. Privy wallets. WebSockets to our engine. Web ships as a PWA; native mobile apps are in development.
What's Hard Right Now
- Data freshness: several live WebSocket streams (order book, trades, candles, stats) feed many panels at once; keeping them fast, consistent with each other, and honest through async gaps (stale quotes, pending fills)
- Performance: a data-dense terminal that stays smooth under constant streaming updates, including on mid-range hardware
- Security: wallet signing, session auth, strict CSP, hardened supply chain
- Shipping volume: three engineers own the entire surface of a live exchange; the backlog is bigger than the team, so throughput and prioritization are part of the job
- Keeping product behavior and design language consistent between web and mobile while being very attentive to nuances of each mobile platform
- Making execution quality something a trader can see in a glance instead of something they take on faith
What You'll Do
- Build and own the JTX client across web and mobile
- Ship real-time trading interfaces: order books, charts, order entry, positions, fill and execution visibility
- Hit tight latency and render budgets against streaming market data, and decide what belongs on the client versus the server
- Build wallet and signing flows, including self-custodial and embedded wallet onboarding
- Own the shared component, state, and data layers the rest of the product team builds on
- Make architectural decisions that hold as the codebase, the team, and the user base grow by an order of magnitude
- Ship fast, watch real users, iterate
What We're Looking For
- Attention to detail bordering on obsessive. You can look at a screen and say what is wrong with it, and it bothers you until it's fixed.
- 5+ years building production frontend, including something real-time, data dense, or financial
- Deep React and TypeScript. You can explain why a component re-rendered and then fix it.
- Mobile experience: React Native, Expo, or native iOS and Android
- Strong fundamentals: browser performance, memory, websockets, network behavior under load
- Security-first instincts around signing flows, key handling, and what should never touch a log
- Comfortable in a codebase that is already live. You can refactor and clean up without stopping shipping.
- Able to weigh business and engineering tradeoffs, and to explain complicated things simply
Relevant Background
- Trading terminals, exchange or brokerage frontends
- Consumer fintech apps at scale
- Charting, time series, or high-frequency data visualization (canvas, WebGL)
- Solana or EVM app development, wallet integrations, transaction signing
- Maintaining a public TypeScript library or design system
If you have experience in any of the following, you may be a good fit:
Similar Jobs
Aerospace • Hardware • Information Technology • Security • Software • Cybersecurity • Defense
Develops and maintains business intelligence reports, analyzes data, integrates Salesforce and Tableau, and supports catalog and pricing data processes. Partners with sales, business development, and program teams on growth strategies, KPIs, market reports, and strategic planning. Provides reporting-tool expertise, training, and ad hoc market analysis while monitoring commercial aerospace trends. The role is fully remote and requires aerospace industry experience.
Top Skills:
AlteryxDeep Learning FrameworksLookerMachine LearningExcelMicrosoft PowerpointMicrosoft WordMs Power QueryPower BIPythonSalesforceSQLTableauTableau PrepTime Series Analysis
Consumer Web • Healthtech • Professional Services • Social Impact • Software
Source and engage technical talent, primarily for engineering roles, using LinkedIn Recruiter, Juicebox, Ashby, referrals, talent communities, market mapping, and creative outreach. Partner with recruiters and hiring managers to refine profiles, share market insights, build diverse pipelines, conduct initial candidate screens, and deliver a positive candidate experience in a fast-paced, metrics-driven environment.
Top Skills:
AshbyJuiceboxLinkedin Recruiter
Big Data • Fintech • Information Technology • Business Intelligence • Financial Services • Cybersecurity • Big Data Analytics
Serve as a trusted technical advisor to telecommunications carriers and enterprise customers. Design carrier-grade messaging, voice, identity, and fraud-prevention solutions; translate customer needs into scalable architectures and product enhancements; lead technical workshops and architecture reviews; support RFI/RFP responses; and collaborate with Product, Engineering, Sales, Business Development, and Customer Success teams to drive adoption and successful implementations.
Top Skills:
3GppAtisAWSCarrier Network ArchitectureCi/CdCloud-Native ArchitecturesContainerized ApplicationsDistributed SystemsDockerGsmaIetfInfrastructure AutomationJSONKubernetesMessaging EcosystemsMicroservicesOn-Premises EnvironmentsPrivate CloudPublic CloudRest ApisSignaling FrameworksSipStir/ShakenTelecommunications ProtocolsVoice Communications
What you need to know about the Colorado Tech Scene
With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.
Key Facts About Colorado Tech
- Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3
- Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech
- Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook)
- Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures
- Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute
