Senior/ Lead Full-Stack Engineer
N-iX is looking for Senior/ Lead Full-Stack Engineer to join the team
About the client:
Our customer is the European online car market with over 30 million monthly users, with a market presence in 18 countries. As a Senior 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:
Design and develop full-stack cloud solutions from technical analysis to integration testing.
Support existing systems
Mentor junior engineers on design patterns, code reviews, testing practices, and scalable architecture.
Establish documentation standards across teams.
Conduct root cause analysis and collaborate with production support to resolve issues.
Evaluate third-party software with business and engineering teams.
Maintain CI/CD pipelines for applications.
Requirements:
Canadian timezone work hours (EDT)
5+ years of experience with JS for web application development
5+ years of experience with React for web application development
Experience with AWS
Experience with SEO Tools, taxonomies
Typescript & CSS must
Expert proficiency in GenAI-driven development Codex integration, rapid prototyping, automated refactoring, and AI-accelerated debugging
Deep understanding of AI agents, autonomous task orchestration, reasoning engines, tool-use integration, and multi-step workflow automation
Mastery of iterative prompting. Chain-of-Thought (CoT), Few-Shot prompting, output validation, and prompt optimization for production-grade code
Proficiency with Kafka, SQL, and performance optimization
Strong understanding of event-driven and microservices architecture
Experience, Application Insights, and responsive front-end design using React
Background in high-traffic websites, performance tuning, and security
Ability to communicate technical solutions effectively
Expertise in unit, component, and integration testing
Solid grasp of agile methodologies, including ScrumBan/Kanban and Gitflow
At least Upper-intermediate English level
Nice to Have:
Previous DevOps Experience is a great advantage
Experience with Java and Scala
Experience with observability tools like Datadog
Proficiency with Java/Spring Boot for building APIs and web applications - nice to have
Team Setup & Work Style:
Kanban methodology using Jira (product and tech backlog)
Slack for communication
Team size: 3-5 FullStack developers and PM
“You build it, you run it” approach (owning development, releases, and monitoring)
CI/CD pipelines with Jenkins/GitHub Actions
Peer code reviews with quality checks (SonarCloud)
Observability and alerting with Datadog/Opsgenie
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