.Who are Whe ?Splio is a scale-up in the marketing and digital technology market, headquartered in Paris. The company has about 200 employees in 4 offices across Europe and MEA.Splio publishes a SaaS marketing platform that integrates CDP and Marketing Automation, as well as all essential CRM features (loyalty, Mobile Wallets), into a single platform powered by AI.The platform enables CRM teams in retail, e-commerce, FMCG, and Telecoms to communicate and engage with their customers in a personalized manner across all channels (email, SMS, Push Wallet...).More than 500 retail, e-commerce, FMCG, and Telecom companies across Europe and the MEA use Splio on a daily basis, including Nature et Découvertes, Longchamp, Bazarchic, APC, The Kooples, Fnac-Darty, Micromania, Faguo, Cyrillus, Orange, and Samsung.About the positionAs a Senior Software Engineer - Full Stack JS, you will be responsible for the technical design, implementation and optimization of our SaaS applications.Within this position, the development will mainly be focused on JavaScript technologies.Your daily missions will include:Integrate a feature team working with lightweight development workflows, requiring a high-level of autonomy and a strong sense of ownershipWork closely with the Splio's front guild to ensure best practices are applied across the teams and our stack follows the market trendWork closely with Product/UI/UX team to implement the designed user friendly componentsManaging performance of a real-time web application displaying a high density of dataContribute daily to all parts of our application's code base : code review, test, architecture design, release and monitoring ? "You Build It, You run It"Constantly interface with the teams involved in the project to ensure a high-quality product is continuously deployedStack : Languages : Javascript, TypeScript Framework/Lib : ReactJS, Redux Tool Kit, Nx, React Testing Lib, React Hook Form, TanStack Query, Webpack, Material UI, NestJS, NodeJS Data : Clickhouse, BigQuery, Kafka, MySQL Dev Env : Gitlab, Docker, K8S Hosting : AWS, GCPTech (80%)Contribute to the overall engineering at SplioContribute to the development with your teamProactively ensure that security, reliability, performance and cost-efficiency are included in technical and architectural discussionsKeep up to date with the latest relevant technologies, continually evaluating their use for SplioLeadership (20%)As a Senior Software Engineer, you provide guidance, allow teams to discover and learn independently