Social network you want to login/join with:Full Stack Engineer – Multi-Tenancy SaaS Platform (Mid-Senior Level)Hull (Hybrid, with regular travel to HQ in Peterborough)Full-time | Permanentcrooton is an award-winning recruitment technology company building next-generation, AI-powered, multi-tenancy SaaS platforms for employers across the globe. We’re looking for two talented Full Stack Engineers to join our high-performing team.You’ll be working on innovative, large-scale projects in the recruitment and marketing sectors, connecting job seekers and employers worldwide. Expect a fast-paced, agile environment where priorities can shift quickly — your adaptability will be just as valuable as your technical skills.Key ResponsibilitiesDesign, develop, and maintain features for multi-tenancy SaaS platforms in recruitment and marketing.Use AI-assisted tools (Copilot, ChatGPT, Gemini, etc.) to write, test, and debug code faster and more effectively.Collaborate with product managers, designers, and developers to deliver quality features on time.Maintain high standards of security, scalability, and performance for a global user base.Deploy, monitor, and maintain applications on Google Cloud Platform (GCP) and AWS.Participate in agile ceremonies, using Jira to manage tasks and sprints.Communicate clearly and confidently with colleagues, stakeholders, and clients.Proven experience delivering multi-tenancy SaaS platforms in a commercial environment.Demonstrated use of AI-assisted development tools to improve speed and quality.Solid database experience (PostgreSQL / MySQL / MongoDB) with strong relational design and optimisation skills.Hands-on experience with GCP and AWS for cloud hosting, deployment, and scaling.Comfortable working with Jira in an agile delivery environment.Excellent communication skills and the ability to clearly explain complex technical ideas.Thrives in a fast-paced environment and embraces change.Experience with containerisation (Docker, Kubernetes).Background in web scraping, large-scale data ingestion, or processing.Familiarity with multi-language SaaS applications.UI/UX skills with modern CSS frameworks (Tailwind, Bootstrap).Knowledge of GDPR, data security, and SaaS compliance.Experience integrating OpenAI, Vertex AI, or other LLMs into live products.Tech Stack You’ll Work WithFrontend: React or Vue.jsTools: Docker, GitHub, Jira, AI-assisted dev tools (Copilot, ChatGPT)Testing: Pytest, Jest, Cypress (AI-assisted test generation encouraged)Why Join Us?AI-first development environment — we embrace AI to accelerate build, test, and release cycles.Work on cutting-edge SaaS used by well-known clients worldwide.Join a collaborative, forward-thinking team where ideas are valued.Competitive salary (£55k–£65k DOE) + performance-related bonus.Hybrid working — based in Hull, with regular travel to HQ.Only apply if you are……an outstanding communicator, a skilful AI prompter, a creative software architect, a world-class developer, an SQL wizard, a tenacious problem-solver, a passionate technologist and a Centurion of Cybersecurity, guarding our code like Fort Knox on lockdown #J-18808-Ljbffr