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Principal software engineer - mobile/web

Castro (Provincia de Lugo)
8FIGURES
Web
Publicada el 15 abril
Descripción

Most people have their wealth scattered across a dozen platforms -- brokerage accounts, retirement funds, real estate, crypto wallets, and private equity. Traditional financial advisors charge 1-2% of assets under management, pricing out the majority of retail investors. 8FIGURES is building the AI-powered personal financial advisor that makes sophisticated wealth management accessible to everyone. we analyze them, remember your goals, research equities on your behalf, proactively surface actionable advice, and guide you toward better financial decisions. Featured in Forbes and trusted by thousands of users, we are a tight-knit team of 8 passionate individuals, 3 co-founders (CEO, CPO, CTO), and a growing engineering team where every person has an outsized impact.

This is not a coding job. And it is not just a frontend job. The software engineering profession is undergoing its most fundamental shift since the move from assembly to high-level languages. As a Principal Software Engineer & Agent Orchestrator (Frontend), you own how users experience 8FIGURES. You are the person who cares whether a feature FEELS right, not just whether it works. You bring design taste, user empathy, analytics-driven iteration, and mobile platform expertise -- and you amplify all of it by orchestrating AI agents to execute at 10x speed.

Claude is your engineering team.

You will shape the user experience and frontend direction of the entire platform and have a direct voice in product strategy.

Frontend Architecture & Design Systems
Own the frontend architecture across web and mobile: the component system, design tokens, and the patterns that unify them across platforms
Design component architectures that are accessible, performant, and feel native on every platform -- iOS, Android, and web
Establish frontend architectural standards and guardrails: component patterns, state management conventions, styling approaches, accessibility requirements
Understand the full stack deeply enough to reason about API contracts, data flows, and backend integration points -- even when your home base is the frontend

Manage AI token budgets and optimize for cost-effective output quality

Verification, UX Review & Design Fidelity
Review all AI-generated components for correctness, accessibility, visual quality, and adherence to the design system
Catch what AI misses: awkward interactions, missing loading states, broken mobile layouts, accessibility violations, animations that feel wrong on a real device
Build deterministic verification workflows -- visual regression tests, Lighthouse CI, accessibility audits, circular dependency detection -- that reduce the surface area for AI mistakes
Test on real devices. Enforce design fidelity: the gap between design intent and implementation is where user experience dies. Understand how a feature FEELS before deciding how to build it
Ship features end-to-end: from API contract definition to UI component to mobile deployment to app store review
AI-native development enables 10x velocity on the frontend -- more components, faster iteration, broader device coverage

User Experience & Analytics
Drive data-informed iteration: identify friction points, measure conversion funnels, run A/B experiments on UI changes
Manage mobile app deployments, app store relationships, and the release cadence for iOS and Android
Monitor frontend performance metrics: Core Web Vitals, mobile rendering performance, bundle size, time-to-interactive
You think and act like this is your company. User experience obsession: You have design taste. You can look at a screen and tell whether it feels right - not just whether it matches a mockup. Frontend architecture expertise: You have designed and shipped production frontend applications using modern frameworks. You understand component architecture, state management, reactive patterns, and build optimization.
You have shipped mobile applications - hybrid or native. You understand the unique constraints: touch targets, offline behavior, app store review processes, platform-specific UX patterns, and performance on mid-range devices.
AI agent orchestration ability: You have used Claude Code, Cursor, Copilot Workspace, or similar agentic development tools in a meaningful way.
Strong UX review instincts: You can spot bugs, performance issues, accessibility violations, and UX drift in code you did not write.
Full-stack fluency: Your home base is the frontend, but you can read, reason about, and contribute to backend code when needed. You understand API design, database models, and authentication flows well enough to write specs and review implementations across the stack.
You have experience with user analytics platforms, A/B testing, and data-driven iteration.
Startup mentality: Fintech awareness: You understand that financial data requires extra care: data integrity, security, compliance, and the consequences of getting it wrong.
Fluent English: You will work remotely and asynchronously with the co-founders and team. Clear, precise communication is essential.

Meaningful early-stage equity package (we are pre-Series A -- this matters)
Remote: Fully remote (EU time zone)
PTO: Flexible time off -- we trust adults to manage their own time

We are an early-stage company. If you are looking for a role where your work directly moves the needle on company valuation, this is it.

Can you design a user experience?Show us something you have built where the UX is exceptional. We will give you a real task from our backlog and watch how you decompose it, delegate it to agents, and review the output. We will show you AI-generated frontend code and ask you to review it. Send us your resume and anything that demonstrates how you think about products and software. A GitHub profile, a portfolio, a blog post, a side project, an architecture document -- whatever best represents you.

The future of frontend engineering is not writing more components. It is understanding what users need, designing the right experiences, building smarter pipelines, and making sharper judgments. If you are an investor who is tired of bad financial apps and an engineer who is ready to orchestrate AI agents instead of writing code, we should talk.

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