Аbout us:N-iX is a software development service company that helps businesses across the globe develop successful software products. Founded in 2002 in Lviv, N-iX has come a long way and increased its presence in eight countries Poland, Ukraine, Sweden, Bulgaria, Malta, the UK, the US, and Colombia. Today, we are a strong community of 2,000+ professionals and a reliable partner for global industry leaders and Fortune 500 companies.About the client:Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.Responsibilities:Developing fast, high-traffic public-facing websitesExplore new technologies and help the team to use themWork using AI tools and apply them to the SDLCFollowing software development best practices while delivering the workFollowing testing principles while testing your own code to ensure production readinessFollow the philosophy of: you-build-it-you-run-it (be responsible for the SDLC processes) Requirements: 5+ years developing reliable, highly available, and scalable software systemsStrong understanding of software architecture and design patternsFirm grasp of clean code principles and coding standardsStrong proficiency using AI tooling, such as ChatGPT/Codex, for rapid developmentExperience integrating AI tooling into your development environment for streamlined usageExperience with AI Frameworks like Vercel AI SDK, LangChain, etc.Strong proficiency with the following technologies: C#+TypescriptStrong proficiency with SQL & NoSQL datastores (GraphQL, Redis)Strong proficiency with frontend development (HTML, CSS, JavaScript)Strong proficiency with component-based frameworks and SSR (Next.js/React or Vue.js) or Angular with the desire to learn React/ Vue.js.Hands-on experience developing and maintaining 3rd party content management systemsKnowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and DockerExperience with APIs and developing in a service-based application environmentExperience building optimized UIs for performanceProficiency with version control systems such as GitExperience working within a formal CI/CD pipelineExperience with logging, monitoring, and alerting services like Datadog, NewrelicSolid approach to testing and ensuring quality of code, Unit testing, backend, and frontendAt least Upper-intermediate English levelThis role requires mandatory timezone coverage: work must align with the Toronto (ET) timezone for LATAM hours and 13:00–21:00 EET for EU hours approximately.We offer*:Flexible working format - remote, office-based or flexibleA competitive salary and good compensation packagePersonalized career growthProfessional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)Active tech communities with regular knowledge sharingEducation reimbursementMemorable anniversary presentsCorporate events and team buildingsOther location-specific benefits*not applicable for freelancers