Back End Developer

Backend Developer (Python/FastAPI) AI Agent & API Integrations

Were looking for a backend developer to integrate AI agents with our API layer and ensure reliable, secure, and scalable data flow across the system.

What Youll Do

API Engineering: Design, build, and maintain RESTful services using FastAPI (or Django REST/Flask with willingness to transition).

Agent Integration: Connect AI agents to backend services, orchestrate inputs/outputs, and standardize response handling.

Database & Persistence: Design schemas and write efficient queries for PostgreSQL (or similar relational databases).

Caching & Queues: Implement Redis for caching, rate-limiting, and message queuing where needed.

Async & Background Jobs: Build background workers for long-running tasks and event-driven processing.

Real-time Status: Implement WebSockets for live progress updates and status streams.

File & Document Pipelines: Handle uploads, storage, retrieval, and metadata management for documents.

Observability & Reliability: Build robust error handling, logging, monitoring hooks, and safe retry patterns.

Documentation: Maintain clear API specs, integration notes, and internal guides.

Testing: Write unit and integration tests to ensure stable releases and confident refactors.

Strong Python fundamentals (async/await, type hints, clean architecture)

Experience building APIs with FastAPI (or Django REST/Flask and ready to learn FastAPI quickly)

Solid PostgreSQL / relational database experience

Hands-on Redis experience (caching and/or queues)

Strong REST API design practices (versioning, validation, pagination, auth patterns)

Comfortable with Git, code reviews, and maintainable code standards

Ability to read, debug, and improve existing codebases

Nice to Have

AWS experience (e.g., S3, ElastiCache, cloud networking basics)

WebSocket implementation experience

Background processing frameworks (Celery/RQ/Arq/Temporal, etc.)

Third-party API integrations and webhook design

UK property domain familiarity (a plus, not required)

What Matters Most (How We Evaluate)

Impact > tenure: what you shipped, improved, or scaled matters more than years.

Curiosity & craftsmanship: youve built something meaningful outside of tutorials.

Debugging strength: you can trace issues across services and logs systematically.

Learning agility: you ramp up quickly on unfamiliar systems.

Integration mindset: you understand how APIs, databases, workers, and agents connect end-to-end.

Not a Fit If

You need step-by-step handholding for core backend work

Your experience is mostly tutorial-level with little production application

You struggle to work with existing codebases or explain your past work technically a Fit If

You need step-by-step handholding for core backend work

Your experience is mostly tutorial-level with little production application

You struggle to work with existing codebases or explain your past work technically