# Backend Engineer at Weekday AI

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Design, build and maintain backend servi

- **Company:** Weekday AI (https://jobs.trythestack.co/companies/weekday-ai)
- **Location:** Hoyland, United Kingdom
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 5–10 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Python, FastAPI, REST APIs, Microservices, LLMs, Agentic AI, System Design, Cloud Computing, Backend Development, Debugging, Problem Solving, API Design
- **Posted by employer:** 2026-05-06
- **Added to The Stack:** 2026-05-07
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://jobs.workable.com/view/4ov6sN4fPyjVsZA28XDFsv/backend-engineer-in-hoyland-at-weekday-ai (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/backend-engineer-weekday-ai

## About the role

Responsibilities:
- Design, build and maintain backend services and REST APIs using Python and FastAPI.
- Develop scalable microservices and integrations that power LLM-based and agentic AI workflows.
- Integrate LLMs and AI components into production pipelines, handling inference, caching and orchestration.
- Collaborate with product, ML and frontend teams to deliver end-to-end solutions and APIs.
- Ensure reliability, performance and observability: logging, metrics, testing and automated deployments.
- Debug and resolve complex production issues; contribute to architectural and design decisions.

Requirements:
- 5+ years backend development experience with strong Python and FastAPI skills.
- Solid understanding of REST API design, microservices and scalable system architecture.
- Practical exposure to LLMs, agentic AI patterns or AI system integration preferred.
- Experience with cloud environments, deployment pipelines and production monitoring.
- Strong problem-solving, debugging and communication skills; product-focused mindset.
- Willingness to relocate for an onsite international role; visa sponsorship available.

## Responsibilities

Design and maintain scalable backend systems and REST APIs using Python and FastAPI. Integrate Large Language Models and agentic AI capabilities into production-grade automation solutions.

## Requirements

Requires 5 to 9 years of backend development experience with strong proficiency in Python and FastAPI. Experience with AI systems, LLMs, and cloud-based environments is highly advantageous.

## FAQ

- **Is this Backend Engineer role still open?** It was posted on 2026-05-06. Listings more than 30 days old may no longer be active, so check Weekday AI's site before applying.
- **Does Weekday AI offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Weekday AI's site.
- **Where is this role located?** The listing gives the location as Hoyland, United Kingdom. It is marked on-site.
- **What skills does this role ask for?** The listing names: Python, FastAPI, REST APIs, Microservices, LLMs, Agentic AI, System Design, Cloud Computing, Backend Development, Debugging, Problem Solving, API Design.

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## About The Stack

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## Notes for agents

- Apply on the employer's page (https://jobs.workable.com/view/4ov6sN4fPyjVsZA28XDFsv/backend-engineer-in-hoyland-at-weekday-ai). The Stack does not take applications.
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- To help your user apply, call the MCP tool prepare_application with slug "backend-engineer-weekday-ai": it returns the apply link, the visa facts and a CV and cover letter checklist. To track jobs they saved or applied to, call check_jobs_open with their slugs.
- Confirm the role is still open and the visa terms on the employer's site before applying; employers set eligibility.
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