Lingo.dev
Posted 2mo ago

Senior Fullstack Engineer

Lingo.dev
Poland or Czech Republic or Germany or Portugal or Spain
RemoteFull Time
Responsibilities
  • designing features
  • developing products
  • owning delivery
Requirements
  • 5+ years of production experience with TypeScript and Node.js
  • Expert React
  • SSR/CSR/SSG
  • Design systems
  • Backend Node.js with PostgreSQL
  • Auth
  • Remote experience
  • Fluent English
Technical tools mentioned
TypeScriptNode.jsReactExpress.jsPostgreSQLSSRReact RouterRemix

Job description

About the Project & Team

We started Lingo.dev at a hackathon and, after winning the best dev tool award, we just kept building. It evolved into a developer-loved toolkit with hundreds of active users, 7,000 weekly CLI runs, 5,000 GitHub stars, and over 100 million translated words. We've graduated from the world's best tech accelerator (Y Combinator) and raised venture funding to continue building developer tools that must exist but don't yet.

We're a small, fully remote team of senior engineers who like to work hard on interesting problems. We value computer science craft over corporate politics and love building tools for developers - including ourselves. Recently we started getting more feature requests than we can ship, so we're excited to expand the team.

Please don't use AI to apply. We're an AI-native company, so we'll notice if you do. We want to know how you think and write.

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

About Lingo.dev

AI-powered localization engineering platform for software developers.

Year founded
2024
Employees
7
Organization type
Private
Latest investment
Raised $4.20M Seed (2025) — led by Initialized Capital
Headquarters
US

Similar jobs

Senior Fullstack Engineer roles
2mo
Save
Mark Applied
Hide
Senior Fullstack Engineer - Typescript/React/Node
United Kingdom or Portugal or Ireland
RemoteFull Time
SoSafe
SoSafe: SaaS platform providing cybersecurity awareness training and risk management.
5+ YOESenior fullstack engineer with 5+ years of experience, React & Node with Typescript, AWS, REST/microservices, and English communication.
Typescript, React, Node.js, AWS, Sentry, Datadog, Grafana, Aurora PostgreSQL, REST, Microservices, SaaS, Agile/Scrum
2mo
Save
Mark Applied
Hide
Senior Fullstack Developer - Data Analytics & AI (m/f/d) (München, BY, DE)
Munich, Bavaria, Germany
OnsiteFull Time
TÜV SÜD
TÜV SÜD: Provides testing, inspection, certification, and technical advisory services.
8+ YOE8+ years software development and solution architecture; strong CI/CD, IaC, cloud, data analytics/AI; leadership and mentoring; German and English fluency.
Python, React, TypeScript, Azure, CI/CD, Infrastructure as Code, Observability, Secure development, Data analytics, AI
2mo
Save
Mark Applied
Hide
Senior Fullstack Engineer (Projects)
Barcelona, Catalunya, Spain
HybridFull Time
Holded
Holded: Cloud-based business management software for small and medium businesses.
2+ YOEPermanent contract; hybrid work model; 26 paid days off; flexible hours; short work-day on Fridays; free catered lunch; training budget; office perks.
Frontend framework, Backend framework, Database, Git, CI/CD, Cloud platforms
2mo
Save
Mark Applied
Hide
Senior Fullstack Engineer (Kraków, PL, 30-302)
Kraków, Małopolskie, Poland
zł15k-zł22k/mo HybridFull Time
GFT
GFTFrankfurt Stock Exchange: GFT: Develops digital solutions and provides IT consulting for global enterprises.
Extensive full-stack experience; Java/Spring Boot backend, Python for services, React frontend; REST APIs, CI/CD, Agile; English communication.
Java, Spring, Spring Boot, Python, React, JavaScript, TypeScript, SQL, PostgreSQL, Oracle, Git, CI/CD, Docker, Kubernetes
3mo
Save
Mark Applied
Hide
Senior Fullstack Engineer (AI Focused)
Prague or Turkey or Czech Republic
RemoteFull Time
OAK'S LAB
OAK'S LAB: Technology partner building software products for startups and enterprises.
6+ YOE6+ years engineering; 3+ years with Node.js and React; strong JS/TS; hands-on AI-driven solutions experience; English proficiency; team collaboration; Agile practices.
TypeScript, Node.js, React, Next.js, React Native, GraphQL, tRPC, Google Cloud Platform, HuggingFace API, LLM APIs, OpenAI API, Langchain, Postgres, Vector Databases
3mo
Save
Mark Applied
Hide
Senior Fullstack Developer Angular/C# (m/w/d)
Ruelzheim, Rhineland-Palatinate, Germany
HybridFull Time
Kardex
KardexSIX Swiss Exchange: KARN: Manufactures automated storage and retrieval systems for industrial warehouses.
Experience with Angular and C#/NET, SQL/Entity Framework; agile team experience; degree in IT or related field; fluent German and English.
Angular, C#/.NET, SQL, Entity Framework, Redux, CQRS
3mo
Save
Mark Applied
Hide
Senior Fullstack Entwickler (m/w/d) – Fokus Frontend (Angular)
Nurnberg, Bavaria, Germany
HybridFull Time
Tantive
Tantive: Provider of agile IT consulting and software development services.
5+ YOESenior frontend-focused fullstack role requiring Angular/TypeScript, REST APIs, CI/CD, UX and accessibility experience.
Angular, TypeScript, HTML5, CSS3/SASS, Responsive Design, REST API, Java/Spring, CI/CD, GitLab CI, Jenkins, Cypress, Playwright, Jest, Docker, Kubernetes, Angular Material, Storybook, Design Systems, Accessibility Testing
3mo
Save
Mark Applied
Hide
Senior Fullstack Engineer - Stuttgart
Stuttgart, Baden-Württemberg, Germany
HybridFull Time
Taxfix
Taxfix: Mobile application for simplified tax filing and management.
Senior fullstack developer proficient in TypeScript; strong OO/FP experience (Java, Kotlin, Scala, Python); skilled with AI tooling and building scalable architectures; collaborative in an agile, small-team environment.
TypeScript, Java, Kotlin, Scala, Python, Claude Code, GitHub Copilot, Cursor, LLM APIs