I'm a Senior Software Engineer with 8+ years of experience building scalable, well-architected web and mobile applications across SaaS, marketplaces and consumer platforms. I specialize in TypeScript, React, Next.js, React Native, Expo, system design and modern frontend tools. With a strong focus on performance and long-term maintainability.
Recently expanding into backend engineering with Node.js, Express, Prisma, and PostgreSQL. And Web3 development with wagmi, viem, @solana/web3.js and bitcoinjs-lib.
I lead end-to-end features, contribute to large-scale design systems, and optimize performance with a focus on UX and maintainability.
After several years working in traditional product lines, I’m now transitioning my focus to Web3. What started as a personal interest in DeFi and liquidity pools became a deeper motivation: to help build tools that promote transparency, ownership, and new forms of coordination.
Web3 has massive potential but it’s still inaccessible to many. I’m excited to contribute to that next wave of crypto-native products that feel fast, safe, and human.
A fully self-custodial, multi-chain crypto wallet built with clarity, flow, and dignity. Teqo supports Ethereum, Solana, Bitcoin + L2s (Arbitrum, Base, Linea, Unichain) with a mobile-first PWA experience. Your keys never leave your device.
Core principles:
- Clarity — Simplicity over cleverness, transparency over obfuscation
- Flow — Seamless cross-chain, cross-account experiences
- Dignity — Empathy for users, no fear-based UX, no predatory patterns
🔗 View Live
🏠 Landing Page
🧪 Explore the Code
- Languages: JavaScript, TypeScript, HTML
- Frameworks: React, Next.js, React Native, Expo
- Styling: CSS, Tailwind, Styled Components
- Testing: Jest, React Testing Library, Playwright, Storybook
- State Management: React Query, Redux, Zustand, React Hooks
- Tooling: Figma, Vercel, Railway, Linear, Jira, Notion, Slack
- Backend: Node.js, Express, Prisma, PostgreSQL
- Web3: Wagmi, Viem, @solana/web3.js, bitcoinjs-lib, Alchemy
- ⚙️ Thomasnet/Xometry – Web Vitals optimization, CSS refactors, PHP→React migration
- 💳 Gorgias – Billing & tax flows with Stripe, unified UI components, testing culture
- 🌍 Faire – Launched subscription product across Europe, TypeScript migration, A/B testing
- 🍔 iFood – Built grocery MVP for low-income users, homepage relaunch, Redux optimization
See full CV → solla.dev/cv-resume-francisco-solla-software-engineer.pdf
I'm based in Salvador, Brazil 🇧🇷 with dual citizenship 🇧🇷🇪🇸. Fluent in English, intermediate in French and Spanish. I thrive in async, autonomy-driven teams. I believe great software comes from strong fundamentals, clear ownership, and kind collaboration.
Let’s build something that matters.