At a Glance
- Tasks: Build and scale intelligent backend systems for AI-driven applications.
- Company: Join a leading tech firm in London with a focus on innovation.
- Benefits: Attractive salary, full-time role, and opportunities for professional growth.
- Other info: Collaborative environment with a focus on high performance and reliability.
- Why this job: Shape the future of AI technology while working with cutting-edge tools.
- Qualifications: 5-9 years of backend development experience, especially in Python and FastAPI.
The predicted salary is between 63000 - 77000 £ per year.
This role is for one of the Weekday's clients.
Salary range: Rs 13000000 - Rs 16000000 (ie INR 130-160 LPA)
Min Experience: 5 years
Location: London
Job Type: full-time
We are seeking a Senior Backend Engineer to build and scale intelligent backend systems powering AI-driven applications. This role focuses on designing robust APIs, developing scalable microservices, and integrating advanced AI capabilities such as Large Language Models (LLMs) and agentic workflows into production environments.
You will play a key role in shaping backend architecture, enabling seamless communication between systems, and ensuring high performance, reliability, and scalability. Working closely with product, AI, and engineering teams, you will help translate complex requirements into efficient, production-ready solutions.
Key Responsibilities
- Design and develop scalable backend systems using Python and modern frameworks like FastAPI
- Build and maintain RESTful APIs and microservices architecture for high-performance applications
- Integrate and operationalize LLMs and agentic AI workflows into backend systems
- Collaborate with AI/ML teams to deploy and optimize intelligent features in production
- Work with databases such as PostgreSQL, MongoDB, and Redis for efficient data handling
- Ensure system reliability, performance optimization, and scalability across services
- Contribute to architectural decisions and evaluate trade-offs for backend design
- Collaborate with cross-functional teams to deliver end-to-end product features
- Troubleshoot, debug, and resolve complex production issues
- Follow best practices in code quality, testing, and deployment
What Makes You a Great Fit
- ~5–9 years of backend development experience with strong proficiency in Python
- ~Hands-on experience with FastAPI or similar frameworks (Flask/Django)
- ~Practical experience working with Large Language Models (LLMs) and AI-driven systems
- ~Understanding of agentic AI concepts or autonomous workflows
- ~Strong knowledge of REST APIs, microservices architecture, and distributed systems
- ~Experience with databases like PostgreSQL, MongoDB, and Redis
- ~Familiarity with cloud platforms such as AWS, GCP, or Azure
- ~Strong problem-solving and debugging skills
- ~Ability to design scalable, maintainable, and high-performance backend systems
- ~Effective communication and collaboration skills in cross-functional environments
Back End Developer Engineer in London employer: Weekday AI
Join a dynamic and innovative team in London as a Senior Software Engineer, where your expertise in Python will be valued and nurtured. We offer a collaborative work culture that encourages mentorship and professional growth, alongside competitive benefits and the opportunity to work on cutting-edge projects. With a focus on employee development and a commitment to high-quality engineering practices, this role provides a meaningful and rewarding career path for those looking to make an impact.
StudySmarter Expert Advice🤫
We think this is how you could land Back End Developer Engineer in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Weekday AI or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Weekday AI.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Weekday AI.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Weekday AI that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Back End Developer Engineer in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Weekday AI.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Weekday AI and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Weekday AI
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Weekday AI uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
