Lead FullStack Software Engineer

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 websites


• Explore new technologies and help the team to use them


• Work using AI tools and apply them to the SDLC


• Following software development best practices while delivering the work


• Following testing principles while testing your own code to ensure production readiness


• Follow 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 systems


• Strong understanding of software architecture and design patterns


• Firm grasp of clean code principles and coding standards


• Strong proficiency using AI tooling, such as ChatGPT/Codex, for rapid development


• Experience integrating AI tooling into your development environment for streamlined usage


• Experience with AI Frameworks like Vercel AI SDK, LangChain, etc.


• Strong proficiency with backend development with either of the following technologies Typescript +Node.js or C#+Typescript


• Strong 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 systems


• Knowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and Docker


• Experience with APIs and developing in a service-based application environment


• Experience building optimized UIs for performance


• Proficiency with version control systems such as Git


• Experience working within a formal CI/CD pipeline


• Experience with logging, monitoring, and alerting services like Datadog, Newrelic


• Solid approach to testing and ensuring quality of code, Unit testing, backend, and frontend


• At least Upper-intermediate English level


• This 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.