Full Stack Engineer – Multi-Tenancy SaaS Platform (Mid-Senior Level)
Peterborough (Hybrid, with regular travel to HQ)
Full-time | Permanent
£55,000 – £65,000 DOE + Benefits + Bonus
crooton 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 Responsibilities
* Design, 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.
Essential Skills & Experience
* Proven experience delivering multi-tenancy SaaS platforms in a commercial environment.
* Demonstrated use of AI-assisted development tools to improve speed and quality.
* Knowledge of Python (Flask/FastAPI/Django) and/or JavaScript (Node.js, Vue.js, React).
* 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.
Desirable Skills
* 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 With
* Backend: Python (Flask/FastAPI), Node.js
* Frontend: React or Vue.js
* Database: PostgreSQL / MySQL (Google Cloud SQL), MongoDB
* Cloud: Google Cloud Run, Cloud Storage, AWS EC2/S3/Lambda
* Tools: 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 Peterborough, 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
HIHI
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