As a Lead FullStack Software Engineer, you'll develop high-traffic websites, integrate AI into workflows, adhere to coding best practices, and maintain systems in a collaborative environment.
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
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What you need to know about the NYC Tech Scene
As the undisputed financial capital of the world, New York City is an epicenter of startup funding activity. The city has a thriving fintech scene and is a major player in verticals ranging from AI to biotech, cybersecurity and digital media. It also has universities like NYU, Columbia and Cornell Tech attracting students and researchers from across the globe, providing the ecosystem with a constant influx of world-class talent. And its East Coast location and three international airports make it a perfect spot for European companies establishing a foothold in the United States.
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