# Fernando Falci **Staff Software Engineer** Western Europe | +1 (302) 687 3667 | fernando@falci.me | falci.me linkedin.com/in/fernandofalci | github.com/Falci --- Staff-level full-stack software engineer with 15+ years of experience across TypeScript/React/Node.js and backend, distributed-systems architecture, driving technical strategy and delivering complex systems across startups and large-scale enterprises. Track record of designing scalable APIs, data layers, and event-driven services, operating high-compliance fintech and crypto platforms, and leading org-wide architecture initiatives adopted across multiple teams. Equally comfortable building frontend and backend services, mentoring engineers, and aligning technical direction with business goals. --- ## Experience ### Namebase.io | Staff Software Engineer 2022 - Present | Web3 Handshake domain marketplace, crypto exchange, and registry platform. - Owned the full technology roadmap for hns.id, the Web3 Handshake domain marketplace and resolution platform, leading a cross-functional remote team of smart contract engineers, backend developers, and UX designers. - Acted as the technical reference for the engineering org, owning architecture reviews and system-design decisions, setting coding and quality standards, and unblocking the team on the hardest protocol-level and scalability problems. - Mentored engineers through onboarding, pairing, and technical reviews, introducing an RFC-driven decision process that raised delivery quality and engineer autonomy. - Translated ambiguous business goals into actionable technical plans, aligning smart contract, backend, and frontend workstreams behind a shared architecture and delivery cadence. - Directed the roadmap for hns.id's Ethereum/EVM smart contracts and Layer 2 (Optimism) integrations, guiding the smart contract engineering team's use of Solidity and Web3.js to deliver DeFi and NFT (ERC-721) features. - Led backend development of the main Namebase application, a Handshake marketplace, crypto exchange, and auction platform, using Node.js and TypeScript to design the REST APIs, versioning strategy, rate limiting, and real-time (SSE) layers. - Built and operated the payments and settlement backend for a crypto exchange handling real-money and on-chain transactions, working within the security, auditability, and compliance constraints of a regulated financial environment. - Designed the platform's data layer architecture across PostgreSQL, Redis, Kafka, and DynamoDB, with careful schema design for performance at scale, overseeing the Go services that implemented it. - Architect and maintain the hns.id frontend in TypeScript, React, and Next.js, integrating TanStack Query and Storybook for a component-driven UI deployed on Vercel, actively developed and extended alongside the backend and protocol roadmap. - Managed AWS infrastructure (EC2, RDS, S3, IAM, SQS/SNS) and Kubernetes deployments on Azure via Helm, with Unleash for feature flag management. Used AWS Lambda for scheduled cron jobs and event-driven background processing. - Built full observability stack from scratch using Grafana, OpenTelemetry, Prometheus, Loki, and Sentry. - Designed and implemented a custom OIDC solution with blockchain integration for secure authentication and identity flows across Namebase products. - Coordinated engineers contributing to the Handshake open-source protocol repository, bridging platform requirements with core protocol development. - Reduced AWS infrastructure costs by 40% through targeted architectural changes and resource rightsizing; built observability from scratch with unified metrics, dashboards, and alerting, cutting incident response times significantly. - Implemented EPP (Extensible Provisioning Protocol) integrations, expanding platform compatibility with global domain registries and opening new partnership opportunities. ### Adevinta | Sr. Software Engineer 2020 - 2023 | Europe's largest digital classifieds group, operating Milanuncios, fotocasa, Vibbo, and 30+ marketplaces. - Technical reference for DataHub, a multi-team internal frontend platform: architected its migration to Webpack Module Federation (micro-frontends), defining the shared architecture and integration contracts that let 4+ teams build and deploy independently and cut deployment conflicts by 45%. - Guided multiple product teams in adopting the micro-frontend architecture through reference implementations, code reviews, and standards that became the blueprint for independent frontend delivery across the org. - Configured Unleash feature flags, Apache Kafka event pipelines, and REST API integrations with JWT/OAuth2 authentication. - Led security compliance efforts covering GDPR, Snyk vulnerability scanning, and on-call incident response via Datadog. - Contributed to the company's Federated GraphQL layer, standardizing data-access patterns and improving query performance. - Championed test automation, CI/CD pipelines, and code review culture adopted across the frontend guild. ### eDreams Odigeo | Sr. Software Engineer 2017 - 2020 | Europe's leading online travel agency, operating eDreams, Opodo, and GoVoyages across 44 markets. - Led the full migration of eDreams' primary booking interface from Backbone.js to React (10,000+ daily active users, zero downtime), delivering 30% faster load times and a 40% reduction in codebase size. - Designed and ran a systematic A/B testing programme alongside product and design, increasing feature adoption rates by 20%. - Worked within a large distributed frontend team following Agile/Scrum, mentoring junior developers and driving code quality standards across the booking flow with TypeScript, CSS Modules, and webpack. ### Mobile-DI | Development Analyst 2015 - 2018 | Software consultancy delivering enterprise Angular applications for B2B clients. - Managed a distributed team delivering Angular applications for enterprise clients, owning architectural decisions, establishing coding standards, and mentoring junior developers through structured code reviews. - Served as primary technical contact for stakeholders, translating business requirements into engineering plans and delivery timelines. ### Matera Systems | Software Engineer 2014 - 2017 | Brazilian fintech delivering platform solutions for financial institutions and payment processors. - Contributed to the development of a platform for a major U.S. company in the TV/streaming sector, implementing features across the stack with Java and Angular and collaborating closely with cross-functional teams to deliver end-to-end solutions. ### IADTEC | Junior Software Engineer 2013 - 2014 | IT consulting firm serving retail and grocery sector clients. - Developed Java-based web applications for clients in the grocery and retail sectors, implementing RESTful APIs and custom UI components. ### Elotech | Junior Software Engineer 2011 - 2012 | Brazilian software company serving the public sector with management and e-gov systems. - Contributed to the development of a platform for the healthcare industry, working primarily with jQuery and PHP to build interactive features and backend services. --- ## Open Source ### Handshake | Open Source Contributor 2020 - Present | Decentralized, permissionless naming protocol and blockchain -- an alternative root DNS. - Principal coordinator of the HIPs repository, the formal process for proposing and ratifying changes to the Handshake protocol, analogous to Bitcoin's BIPs. - Authored HIP2, which was adopted by multiple ecosystem projects including BobWallet. - Maintain hns.dev, an open-source resource hub for the Handshake ecosystem. - Improved the documentation deployment process by creating a CI/CD pipeline that automatically builds and deploys docs and HIPs on every update. - Built an open-source page builder for link-in-bio style pages using Web Components. - Built an open-source Handshake price tracker using Python with AI-assisted workflows and SQLite. ### Bob Wallet | Open Source Contributor 2020 - Present | Leading open-source Handshake wallet and name management tool. - Contributed to BobWallet, implementing features such as emoji support for domain names and improving the user interface for name auctions. --- ## Side Projects ### sinpapeles.xyz 2020 - 2024 | Hosting service for Handshake domains with IPFS support. - Built sinpapeles.xyz, a hosting service for Handshake domains with IPFS support using Vite, Express, Node.js, and PostgreSQL. - Built a default parking page for unconfigured Handshake domains, served via Express with Handlebars templates and JWT-based auth. ### Anonymous Bot 2019 - Present | SaaS Slack bot for anonymous team messaging, with AI features and Stripe billing. - Built with NestJS, PostgreSQL/Prisma data layer, and Redis caching. - Integrated Stripe payments, Slack Webhooks, and automated deployments via GitHub Actions with Secrets Manager. - Added fine-tuned AI models and AI agent features; instrumented with Grafana, OpenTelemetry, Datadog, and Sentry; covered with TDD unit tests. --- ## Skills **Backend:** Node.js, REST APIs, GraphQL, Java **Frontend:** React, TypeScript, Next.js, HTML/CSS **Infrastructure:** AWS, AWS Lambda, Vercel, Kubernetes **Blockchain:** Bitcoin, Lightning Network, Handshake, Web3 **Leadership:** Technical Strategy, Architecture, RFC Writing, Mentoring, Agile / Scrum, TDD, Code Reviews --- ## References **Daniel Fernandez** | Qdrant, Staff Software Engineer | contact@danifdz.dev **Aaron Oxborrow** | Aftermarket.com, CTO | aaron@oxborrow.com