Senior Full-Stack Engineer, TypeScript, React, Node.js

WhyHireWrong?

. Build and ship full-stack features in TypeScript, with React on the frontend and Node.js on the backend .

Posted 10/24/2026full-timeWarsaw • PolandSenior💰 $100,000 - $120,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in full-stack development using TypeScript, React, and Node.js, with a strong focus on building customer-facing features and improving developer experience. Proficient in collaborating within small teams and adapting to early-stage startup environments.

Highest-signal resume keywords

TypeScript DevelopmentNode.js Production ExperienceReact Application DevelopmentCustomer-Facing Feature DeliveryPayments and Subscriptions Expertise

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

TypeScriptNode.jsReactFigmaAutomated TestingAPI DevelopmentUI/UX DesignFastifyExpressNestJS

Soft Skills

Independent WorkCollaborationProblem-Solving

Tools & Technologies

AI Coding ToolsCursorCopilotClaudeOpenAI

Industry Keywords

SaaSE-commercePublic APIsDeveloper DocumentationStartup Experience

Tech Stack

Tools & technologies

JavaScriptMagentoNext.jsNode.jsNuxtReactTypeScriptVue.js

About the role

Key responsibilities & impact

Build and ship full-stack features in TypeScript, with React on the frontend and Node.js on the backend
Own features end to end: clarify requirements, propose an approach, build, test, release and check the impact
Build merchant-facing subscription, billing and checkout flows that are clear and reliable
Improve the developer-facing side of the product: APIs, docs, integrations, onboarding and error messages
Turn Figma designs into clean, accessible UI and suggest practical UX improvements
Keep the architecture simple, observable and maintainable
Do code reviews, write automated tests and keep documentation useful
Use AI coding tools where they save time or improve quality
Work in a small team in Poland, close to product and the founders
Help shape the architecture as the product grows

Requirements

What you’ll need

Fluent Polish and residence in Poland
5+ years of professional software engineering experience, mostly in product or SaaS companies, not only agencies or consulting
Strong TypeScript and Node.js in production, with features used by real customers
Production experience with React
Experience taking at least one customer-facing feature from requirements to release
Comfortable working from Figma designs
Able to work independently in an early-stage team without detailed specs
Nice to have Next.js, or Vue and Nuxt
Fastify, Express or NestJS
Payments or subscriptions: recurring billing, payment providers, invoicing, proration, dunning
E-commerce: Shopify, WooCommerce, Magento or headless commerce
Public APIs, SDKs, webhooks or developer documentation
Startup experience, especially in teams under 200 people
Hands-on use of AI and LLM tools (Cursor, Copilot, Claude, OpenAI)