Senior AI-Native Software Engineer - Full Stack (React, Next.js, Node.js)

Expected, JavaScript, TypeScript, React, Next.js, Node.js, AI

Optional, Playwright

Operating system, Windows, macOS

About the project, You'll join a team building modern business applications powered by AI-assisted engineering., , Your work will combine product thinking, software architecture, and collaboration with clients., , Rather than focusing only on writing code, you'll use AI tools to design solutions, prepare specifications, review generated code, and help deliver scalable, production-ready software., , Tech stack: TypeScript, JavaScript, React, Next.js, Node.js, PostgreSQL, Playwright, AI: Claude, Codex, MCP, agentic workflows & reusable AI skills

This is how we work, at the client's site, you develop several projects simultaneously, you have influence on the choice of tools and technologies, you have influence on the technological solutions applied, you have influence on the product, you develop the code "from scratch", you focus on product development, you focus on code maintenance, agile, scrum

Your responsibilities, working in clients' teams as the equal team member, building and developing frontend and backend features using React, Next.js, TypeScript, and Node.js, designing application architecture, reusable modules and integration patterns, translating business requirements into clear technical specifications for AI coding agents, using AI coding agents (Claude/Codex) as part of your daily engineering workflow, reviewing, validating, and improving AI-generated code, building and improving AI-assisted engineering workflows, including reusable skills, prompts and testing practices, contributing to software quality through automated testing, code reviews, and AIassisted validation, taking ownership of technical solutions within your area of responsibility, contributing to open-source libraries, sharing knowledge and helping grow AI engineering practices within the the.good.code; community

5+ years of commercial experience building web applications, experience with JavaScript, TypeScript, React, Next.js, and backend development using Node.js, experience building reusable AI workflows, prompts, skills, or agentic solutions, understanding of concepts such as MCP (Model Context Protocol), tool integrations, or multi-agent workflows, the ability to translate business requirements into scalable technical solutions, understanding of software architecture and scalable system design, ability to review and validate AI-generated code rather than relying on it blindly, product mindset - you understand the business context behind the features you build and actively look for better solutions, ability to work independently, manage priorities, and switch context when needed, critical thinking, ownership, and proactive attitude, advanced English communication skills (you'll use English every day within the team and directly with international clients), Polish language is a must

Optional, experience building AI-powered developer tools or internal engineering platforms, familiarity with Playwright or other automated testing frameworks, contributions to open-source projects or active participation in technical communities, willingness to travel occasionally for client workshops

This is how we work on a project, Clean Code, code review, documentation, functional tests, integration tests, test automation, unit tests, manual tests

Development opportunities we offer, development budget, intracompany training, technical knowledge exchange within the company, the company supports open source projects

Benefits, sharing the costs of sports activities, sharing the costs of foreign language classes, sharing the costs of professional training & courses, remote work opportunities, flexible working time, integration events, birthday celebration, Ownership

Recruitment stages, The application form - fill it out. We really read it!, 45-min HR interview to learn about you, 90-min tech interview to assess practical skills , 60-min final interview with one of our Founders, References check, Welcome on board!

We value engineers who:, take ownership of their work and deliver what they commit to, work independently and manage their time without micromanagement, care about quality instead of rushing delivery, think about value and impact, not only implementation, communicate clearly and work well in a remote environment, raise issues early and treat feedback as part of growth, enjoy collaboration and maintain a positive team attitude

This sounds like a great opportunity, but maybe not for you?, , We would be delighted if you could pass on our job description to your friends and network., If you recommend someone, we’ll be thrilled to reward you! Contact us with your referral., Thank you for your time and consideration!, , the.good.code; team.

THEGOODCODE SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ, We’re a software house with a team of 25 professionals distributed across three countries. We focus on long-term projects and believe great software comes from ownership, strong collaboration with clients, and developers who care about the quality and business impact of their work., , At the.good.code; successful software starts with understanding the business problem first. We work closely with our clients, use AI as an engineering tool rather than a shortcut, and improve the way software is designed and delivered. We focus on long-term collaboration and are looking for people who are curious, open-minded, and motivated to grow together with the business and the products we build.