Senior Fullstack Engineer

Job not on LinkedIn

🕒 July 28

🌐 Poland, Spain, +2 more countries – Remote

🇵🇱 Poland – Remote 🇪🇸 Spain – Remote 🇩🇪 Germany – Remote 🇵🇹 Portugal – Remote

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

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Lingo.dev

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2024

🔌 API

☁️ SaaS

🏢 Enterprise

💰 $4.2M Seed Round - Lingo.dev on 2025-02

API • SaaS • Enterprise

Lingo. dev is a localization engineering platform that provides stateful localization engines developers and product teams configure and call via API, CLI, CI/CD, or UI. Each localization engine persists glossaries, brand voice, translation memory, and per-locale model chains; it runs retrieval-augmented localization (context enrichment + LLM translation), automated quality scoring, and optional human post-editing to keep terminology consistent and measurable across releases. The platform is API-first, integrates with developer workflows (GitHub Action, CLI, SDKs), offers SOC 2 Type II and encryption, and targets engineering and localization teams that need production-grade, scalable localization infrastructure.

📋 Description

• As part of a team of senior engineers, design, develop, and grow the Lingo.dev products • Web applications - Routing, navigation, onboarding flows, user experience, performance • Open source tools - CLI, webpack/vite plugins • Backend APIs - encapsulation, API design, security • Database layer (PostgreSQL) • Integrations - with 3rd party systems • AI agents • Take full ownership of features from design to deployment: draft technical designs, review with founders + the team, implement end-to-end with tests and documentation • 3 sprints of product roadmap work, 1 cooldown sprint (customer feature requests, improvements, bug fixes) • Weekly Demo Days with the rest of the team

🎯 Requirements

• Built an own app, or side project that others have used - could be a tool for a friend, a small product, an open-source package, anything real people relied on • 5+ years of production experience with TypeScript and Node.js • Expert React knowledge - Suspense-first patterns, skeleton loaders, loading states • Experience with SSR, CSR, and SSG • Deep expertise with React routing libraries • Built or contributed to design systems / component libraries used by others • Experience designing navigation, onboarding flows, and user journeys • Backend experience with Node.js (Express.js or similar) and PostgreSQL • Experience designing production-ready APIs • Experience with authentication and authorization systems • CS degree or equivalent - algorithms, data structures, system design • Prior remote work experience in distributed teams • Available 7-10am San Francisco time daily • Fluent English • Deep knowledge of AI coding tools and workflows - you use them daily and know how to get the most out of them

🏖️ Benefits

• Opportunity to work with latest, cutting-edge technologies • Work directly with users using what you build every day • Small team working directly with founders • Be a part of open-source community • Occasional travel to meet the team in person • Conference and learning budget • Flexible working hours • Competitive salary • Health insurance