Quick Summary
N-iX is hiring a remote Senior/Lead FullStack Engineer in Brazil (Canadian Time Zone) for a European online car marketplace. This role requires 6-8 years of backend development experience, 6+ years in PHP/Laravel, proficiency in JavaScript/TypeScript, and advanced proficiency in using AI tools for all stages of software development, including mentoring teams on AI best practices. Candidates must have deep understanding of API design, distributed systems, scalable architecture, AWS, CI/CD, DevOps, and relational databases, with proven ability to lead complex technical initiatives.
Canadian Time Zone
Duration: 6 months
About the Opportunity
Our client is a leading European online car marketplace, serving over 30 million monthly users across 18 countries.
As a Senior/Lead FullStack Engineer:
You will assume a key technical leadership role within the client's engineering organization, responsible for designing, building, and evolving scalable backend services and user-facing features across our comprehensive product suite.
You will contribute across a polyglot stack, including PHP (Laravel), JavaScript, and TypeScript, collaborating closely with product managers, designers, and other engineers to deliver robust, maintainable, and secure solutions. This role demands high proficiency in utilizing AI tools for day-to-day software development. AI-assisted workflows are integral to how we design, implement, test, debug, document, and optimize software. As a Senior/Lead Engineer, you will also elevate your team's AI capabilities by modeling effective usage patterns and sharing best practices.
What You'll Do
- Architect, design, and implement scalable services and product features using PHP (Laravel)
- Build and maintain frontend features using JavaScript and TypeScript
- Extensively use AI tools for code generation, refactoring, test creation, debugging, performance optimization, and documentation
- Critically evaluate AI-generated outputs to ensure correctness, security, maintainability, and alignment with architectural standards
- Lead technical design discussions and contribute to system and API architecture decisions
- Own complex features end-to-end, from technical design through deployment, monitoring, and iteration
- Drive improvements in code quality, performance, reliability, and security
- Write clean, maintainable, and well-tested code with strong automated test coverage
- Conduct in-depth code reviews and mentor engineers through actionable feedback
- Coach teammates on effective and responsible AI usage in software engineering workflows
- Collaborate cross-functionally to translate business requirements into scalable technical solutions
- Contribute to cloud infrastructure and services (AWS), ensuring high availability and operational excellence
- Participate in compensated on-call rotations to ensure platform reliability
- Champion DevOps best practices, CI/CD improvements, and observability standards
- Identify and lead technical initiatives that improve long-term platform sustainability
What We're Looking For
- 6-8 years of extensive professional experience in backend software development
- Strong expertise in PHP and Laravel (6+ years)
- Proficiency in JavaScript and TypeScript for modern frontend development
- Demonstrated advanced proficiency using AI tools in day-to-day engineering work (code generation, debugging, test automation, documentation, architectural exploration)
- Strong ability to validate, refine, and productionize AI-assisted outputs
- Experience improving team-level engineering practices
- Deep understanding of API design, distributed systems, and scalable architecture patterns
- Experience working with AWS or similar cloud environments
- Strong knowledge of CI/CD pipelines and modern DevOps practices
- Experience designing and optimizing relational databases and data models
- Proven ability to independently lead complex technical initiatives
- Strong problem-solving skills and ability to navigate ambiguity
- Clear and effective communication skills
- Participate in compensated on-call rotations to ensure reliability of our backend services
- Canadian timezone working hours
- English proficiency at B2/C1 level or higher
Nice to Have
- Experience integrating AI capabilities into production products (e.g., LLM integrations, AI-driven features, intelligent workflows)
- Experience designing AI-enabled user experiences or backend AI services
- Experience in automotive, dealer software, or SaaS platforms
- Experience with containerization (Docker, Kubernetes)
- Event-driven architectures and messaging systems
- Performance tuning and high-scale system optimization
- Experience working in multi-product platform environments
We offer*:
- Flexible working format - remote, office-based, or hybrid
- A competitive salary and comprehensive compensation package
- Personalized career growth opportunities
- 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