This is a job that we are recruiting for on behalf of one of our customers. To apply, speak to Jack. He's an AI agent that sends you unmissable jobs and then helps you ace the interview. He'll make sure you are considered for this role, and help you find others if you ask. Senior Backend Developer Company Description: Morta Technology Ltd – Fast-growing enterprise SaaS platform Job Description: Join Morta Technology Ltd as a Senior Backend Developer to build and scale critical services for our enterprise SaaS platform. You'll design robust APIs, optimise high-performance databases, and implement reliable background jobs that directly impact product functionality and system reliability. This role offers the opportunity to shape core backend architecture and work closely with the product team to drive performance and scalability. Location: London, UK Why this role is remarkable: Play a pivotal role in developing the core backend infrastructure for a rapidly expanding enterprise SaaS company. Work with a modern and robust tech stack including Python, Flask, SQLAlchemy, Postgres, Celery, and Redis. Influence technical architecture and directly contribute to system performance and scalability. What you will do: Build and maintain backend services and APIs in Python using Flask, SQLAlchemy, and Postgres. Design and optimise Postgres schemas, queries, and indexes for performance, scalability, and reliability. Implement reliable background jobs and data workflows using Celery and Redis. The ideal candidate: Proven experience building and scaling backend services in Python, ideally with Flask. Strong expertise in relational database design, optimisation, and performance tuning with Postgres. Experience with distributed systems, queues (Celery, Redis), and API design principles. How to Apply: To apply for this job speak to Jack, our AI recruiter. Step 1. Visit our website Step 2. Click 'Speak with Jack'. Step 3. Login with your LinkedIn profile. Step 4. Talk to Jack for 20 minutes so he can understand your experience and ambitions. Step 5. If the hiring manager would like to meet you, Jack will make the introduction.