About Stay22 Stay22 is an AI-powered affiliate platform that helps publishers, ticket platforms, and content creators unlock new revenue streams while improving user experience. Our partners benefit from delivering more value, not just earning more. This description includes both the original French context and an English translation for reference. Job Summary As a Senior Fullstack Developer at Stay22, you will be a technical leader within a cross-disciplinary squad. You will own end-to-end design, development, and deployment of critical product initiatives, bridging backend logic with intuitive user experiences. You will employ your full-stack versatility, using Node.js, Python and TypeScript on the backend and React on the frontend, to build scalable, high-performance solutions. You will tackle ambiguous problems, make pragmatic technical trade-offs, and mentor other developers to elevate the teams engineering maturity. Key Responsibilities End-to-End Product Engineering Lead the design and implementation of full-stack features, ensuring seamless integration between server-side logic (Node.js/Python) and client-side interfaces (React/TypeScript). Architect and optimize database schemas (PostgreSQL and MongoDB) to ensure data integrity, performance and scalability for high-traffic applications. Write high-quality, maintainable code and champion simplicity, ensuring solutions are functional, robust and easy to maintain long-term. Technical Leadership & Quality Drive technical decision-making within the squad, producing well-regarded technical designs and Architecture Decision Records (ADRs) for complex initiatives. Champion engineering best practices, including rigorous code reviews, automated testing (TDD/BDD) and efficient CI/CD workflows. Identify and address technical debt proactively, balancing speed with long-term system stability. Collaboration & Mentorship Mentor mid-level and junior developers, providing feedback and fostering a culture of continuous learning. Partner with Product Managers and Designers to assess feasibility, discuss trade-offs on scope and timing, and shape the product roadmap. Collaborate with Platform and Data teams to ensure solutions align with security, observability and data governance standards. Requirements Education & Experience B.S. or M.S. in Computer Science or a related field, or equivalent professional experience. 6-8+ years of experience in software development with a track record of shipping full-stack production applications. Technical Skills Deep expertise in server-side development using Node.js and/or Python. Strong proficiency in frontend development using TypeScript and modern frameworks like React. Experience with relational (PostgreSQL) and NoSQL (MongoDB) databases. Experience with cloud infrastructure (GCP preferred), containerization (Docker/Kubernetes) and Infrastructure as Code. Soft Skills & Mindset Ability to break down complex, nebulous requirements into actionable technical plans. Strong communication skills, able to explain technical concepts to non-technical stakeholders. User-centric mindset, considering the impact of technical decisions on the end-user experience. What to Expect from our Hiring Process We value your time. Here is a quick overview of what to expect: Screening call with our Talent Acquisition Partner (30-45 minutes) System design brainstorming (Miro) with the Engineering Team (60 minutes) Final interview with our CEO (30 minutes) Offer & onboarding Please note that this process is subject to change based on team needs. Why join Stay22? Support Travel Creators: Be part of a team that helps travel creators explore the world while increasing passive income. Empower Your Growth: We hire exceptional talent and provide opportunities to excel and develop unique skills. Lead with Impact: Take initiative and contribute to Stay22s evolution. Location: Bright, dynamic offices in Little Italy with access to shops and restaurants. Be Yourself: Come-as-you-are dress code and flexible work schedule. Comprehensive Benefits: Health, dental, retirement, learning and development, social events and retreats. Stay22 is an equal-opportunity employer. All qualified applicants will be considered. If you require accommodations due to a disability or other needs, contact us at Note: This is a bilingual job description in English and French for reference and alignment with our Montreal engineering audience. #J-18808-Ljbffr