Senior/ Lead FullStack Engineer

Job description

Work type: Office/Remote Technical Level: Senior Job Category: Software Development Project: Top European automotive marketplace Canadian time zone Time: 6 months About the Opportunity Our client is a leading European online car marketplace, serving 30M+ monthly users across 18 countries. As a Senior/Lead FullStack Engineer: - You will play a key technical leadership role within the client’s engineering organization. You will design, build, and evolve scalable backend services and user-facing features across our product suite. - You will contribute across a polyglot stack that includes PHP (Laravel), JavaScript, and TypeScript, collaborating closely with product managers, designers, and other engineers to deliver robust, maintainable, and secure solutions. - This role requires a high level of proficiency in using AI tools in day-to-day software development. AI-assisted workflows are not optional—they are an expected part of how we design, implement, test, debug, document, and optimize software. As a Senior/ Lead engineer, you will also help 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 - Use AI tools extensively 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 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