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:- Continue the evolution and scaling of our freshly released, native ChatGPT apps and custom MCP integrations.
- Develop and maintain high-traffic, public-facing interfaces hosted on AWS modern cloud infrastructure.
- Work heavily with AI agents (Claude Code, ChatGPT/Codex) to maintain and extend a codebase
- Operate with full team autonomy, collaborating closely with the Engineering Manager in a "co-author" environment.
- Follow the "you-build-it-you-own-it" philosophy, taking full responsibility for the SDLC and production readiness.
- Explore and implement emerging AI frameworks and technologies to keep the product at the forefront of the GenAI market.
- 7+ years of experience developing reliable, highly available, and scalable software systems.
- Strong experience working with AI agents (Claude Code, ChatGPT/Codex) to maintain and extend a codebase
- Strong proficiency with backend development using Node.js and TypeScript.
- Deep experience with Model Context Protocols (MCP).
- Proven track record of using AI tooling (ChatGPT, Codex, Claude Code) for rapid operator-driven development.
- Hands-on experience with modern cloud infrastructures, specifically AWS, Terraform, and Docker.
- Strong proficiency with frontend development (HTML, CSS, JavaScript) and component-based SSR frameworks like Next.js or React.
- Experience with SQL and NoSQL datastores, as well as developing in service-based API environments.
- Strong understanding of software architecture, design patterns, and clean code principles.
- A modern, energetic mindset with critical thinking and systemic vision skills, the ability to work independently and take high-level ownership.
- Experience with formal CI/CD pipelines and monitoring services.
- Upper-intermediate English level.
We offer*:
- Flexible working format - remote, office-based or flexible
- A competitive salary and good compensation package
- Personalized career growth
- Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
- Active tech communities with regular knowledge sharing
- Education reimbursement
- Memorable anniversary presents
- Corporate events and team buildings
- Other location-specific benefits
*not applicable for freelancers
Top Skills
What We Do
N-iX is a global software solutions and engineering services company that helps world’s leading organizations turn challenges into lasting business value, operational efficiency, and revenue growth using advanced technology. Whether you need to build a custom solution, modernize your digital product or acquire extra tech expertise - we have the experience and capabilities to ensure your success. With over 2,000 professionals in 25 countries across Europe and the Americas, N-iX offers expert solutions in cloud, data analytics, embedded software, IoT, AI, machine learning, and other tech domains. Being in business for over two decades, we have worked with dozens of industry-leading enterprises and Fortune 500 companies creating value across a wide variety of sectors, including finance, manufacturing, supply chain, retail, e-commerce, healthcare, and more. Our unique combination of business domain expertise and technical know-how enables us to effectively collaborate with ISVs, tech companies, and enterprises of all sizes. Thanks to the strong tech ecosystem and partnerships with AWS, GCP, Microsoft, SAP, OpenText, Snowflake, and others, we bring extra speed, scale and efficiency to more than 160 organizations across the globe. N-iX is recognized by numerous industry awards, such as CRN Solution Provider 500, Global Outsourcing 100 by IAOP, ISG Provider Lens™, Modern Application Development services providers by Forrester, etc
