Back End Developer

Senior Backend Developer | Python, AI, ML, NLP | Start-Up | Bristol (4-days onsite)

We are hiring a Senior Backend Developer with strong Python expertise and experience building AI-enabled systems to join a team developing an advanced communications platform.

This role is suited to someone who enjoys designing scalable backend systems, integrating AI capabilities, and mentoring engineers while contributing to the technical direction of a growing platform.

Key Responsibilities

• Design, build, and maintain scalable backend services and APIs using Python
• Ensure performance, reliability, and security across backend systems
• Maintain high standards for testing, documentation, and code quality

AI Integration

• Develop and integrate AI-powered functionality within backend services
• Work with AI/ML tooling, data pipelines, and large language model APIs
• Collaborate with AI specialists to deploy and maintain intelligent services
• Identify opportunities for automation and intelligent features across the platform

Technical Leadership

• Support and mentor junior developers through code reviews and collaborative development
• Contribute to coding standards, engineering practices, and architectural decisions
• Work closely with product and engineering teams to deliver impactful features

Requirements

• 5+ years backend development experience with strong Python expertise
• Experience designing RESTful APIs, microservices, and scalable backend systems
• Knowledge of cloud platforms such as AWS, Azure, or GCP
• Experience integrating AI or machine learning services, including LLM APIs
• Strong problem solving ability and collaborative mindset
• Experience mentoring developers or contributing to technical leadership

Nice to Have

• Experience with containerisation technologies such as Docker or Kubernetes
• Familiarity with CI/CD and DevOps practices
• Exposure to model deployment or MLOps practices
• Experience designing distributed or event driven systems