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Senior Fullstack Engineer

Poland | Czech Republic | Germany

TrulyRemote Verified

Hand-curated global remote job with direct application link

Technical Requirements

TypeScriptNode.jsReactPostgreSQLSSRCSRSSGAPI Design

Job Functions

  • 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

Optional Skills

  • Experience with Cloudflare platform (Workers, etc.)

  • Experience with Row-Level Security (RLS) in Supabase/PostgreSQL

  • Experience with background job workflows

  • Built an AI agent before

  • Contributed to a design system or React component library used by other teams

  • Experience with observability and monitoring

  • Open source contributions

  • Speaking multiple languages is a plus

  • You love Remix, React Router, TanStack Router, or TanStack Start

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

Interview Process

  1. Screening Call (Technical/Cultural Fit)

  2. Live Coding / Technical Project: Evaluating CS fundamentals and architectural depth (algorithms, system design)

  3. Final Deep Dive (System Design & Partnership)

After passing the interviews, there's a one-month paid trial period. It's intense - we'll work closely together on real features to make sure we work well together.

Do Not Apply If

  • You are looking for passive, hands-off remote work with minimal team interaction

  • Uncertainty makes you uncomfortable - you prefer detailed specs over figuring things out as you go

  • You are unwilling to prioritize customer needs over your preferred patterns or tools

Senior Fullstack Engineer
Lingo.dev
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