Lead FullStack Software Engineer with AI

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 of experience developing reliable, highly available, and scalable software systems

• Hands-on experience in system design

• Strong understanding of software architecture and design patterns

• Firm grasp of clean code principles and coding standards

• Strong proficiency in using AI tools such as ChatGPT, Codex, and Claude Code for rapid development

• Experience integrating AI tools into the development environment for streamlined usage

• Hands-on experience with AI context management, harness engineering, and prompt engineering

• Strong proficiency in backend development with C#(.NET 6+)/NodeJS/Python

• Strong proficiency in TypeScript

• Strong proficiency with SQL and NoSQL databases, including ORM knowledge and database partitioning and sharding techniques for scaling large databases

• Strong proficiency with distributed caching solutions, such as Redis, and advanced caching strategies

• Strong proficiency in frontend development using HTML, CSS, and JavaScript

• Strong proficiency with component-based frameworks and SSR, with Next.js/React as the primary frontend stack; candidates with Vue.js or Angular backgrounds should be willing to transition to Next.js/React

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

• Strong experience in API design and developing RESTful services

• Proficiency with version control systems such as Git

• Experience working within a formal CI/CD pipeline

• Experience with logging, monitoring, and alerting tools such as Datadog, New Relic, and Grafana

• Solid understanding of the testing pyramid, including unit, integration, and end-to-end testing

• At least an Upper-Intermediate level of English

• Mandatory timezone coverage: working hours must approximately align with the Toronto Eastern Time zone for LATAM-based candidates or 13:00–21:00 EET for EU-based candidates.

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