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

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.Interested to hear about the projects?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. You'll work across multiple client projects simultaneously, so being comfortable with context switching and managing priorities is an important part of this role.Tech stack: TypeScript, JavaScript, React, Next.js, Node.js, PostgreSQL, Playwright, AI: Claude, Codex, MCP, agentic workflows & reusable AI skillsSalary: 140-180 PLN/h net + VAT / B2BCurious about your responsibilities? You will be:working in clients' teams as the equal team memberbuilding and developing frontend and backend features using React, Next.js, TypeScript, and Node.jsdesigning application architecture, reusable modules and integration patternstranslating business requirements into clear technical specifications for AI coding agentsusing AI coding agents (Claude/Codex) as part of your daily engineering workflow reviewing, validating, and improving AI-generated codebuilding and improving AI-assisted engineering workflows, including reusable skills, prompts and testing practicescontributing to software quality through automated testing, code reviews, and AI-assisted validationtaking ownership of technical solutions within your area of responsibilitycontributing to open source libraries sharing knowledge and helping grow AI engineering practices within the the.good.code; community Ready to apply? First, check if you have:5+ years of commercial experience building web applicationsexperience with JavaScript, TypeScript, React, Next.js, and backend development using Node.jsexperience building reusable AI workflows, prompts, skills, or agentic solutionsunderstanding of concepts such as MCP (Model Context Protocol), tool integrations, or multi-agent workflowsthe ability to translate business requirements into scalable technical solutionsunderstanding of software architecture and scalable system designability to review and validate AI-generated code rather than relying on it blindlyproduct mindset - you understand the business context behind the features you build and actively look for better solutionsability to work independently, manage priorities, and switch context when neededcritical thinking, ownership, and proactive attitudeadvanced English communication skills (you'll use English every day within the team and directly with international clients) We appreciate, if you have:experience building AI-powered developer tools or internal engineering platformsfamiliarity with Playwright or other automated testing frameworkscontributions to open-source projects or active participation in technical communitieswillingness to travel occasionally for client workshops We value engineers who:take ownership of their work and deliver what they commit towork independently and manage their time without micromanagementcare about quality instead of rushing deliverythink about value and impact, not only implementationcommunicate clearly and work well in a remote environmentraise issues early and treat feedback as part of growthenjoy collaboration and maintain a positive team attitudeKeen to hear about our recruitment process? Here you go:  The application form - fill it out. We really read it!60-minute HR interview to learn about your experience and motivation90-minute tech interview with our developers to check your practical skills45-minute final interview with one of our FoundersReferences checkWelcome on board!