Python Backend Developer

Xelix; London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A fast-paced technology firm in London is seeking experienced Mid-Senior Python Developers to join their back-end development team. The role involves implementing scalable solutions and designing APIs. Candidates should have over 4 years of experience in Python and strong problem-solving skills. The company offers a competitive salary, hybrid working conditions, and a strong commitment to professional development.

Benefits

Competitive salary of £60,000 - £80,000

27 days annual leave

Hybrid working model

Comprehensive medical & dental cover

Enhanced parental leave pay

Learning & development budget

Team socials & activities

Annual team retreat

Qualifications

• 4+ years of Python coding professional experience.
• Ability to learn and apply new technology quickly.
• Ability to effectively communicate complex technical concepts.

Responsibilities

• Implement robust and scalable solutions in Python.
• Develop and design REST APIs.
• Implement performance improvement strategies.
• Ensure code quality through tests and reviews.

Skills

Python coding experience

Problem-solving

Communication skills

Education

Degree in Computer Science (2:1 or above)

Tools

Django

Django Rest Framework

Amazon Web Services

SQL/PostgreSQL

GitHub

Jenkins

Docker

Terraform

Job description

About us

At Xelix, we work with some of the world’s largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows.

Xelix is a fast-paced scale-up - things move fast and expectations are high. We raised our Series B with Insight Partners in June 2025 and are expanding aggressively, whilst remaining profitable. We have over 100 talented people pulling together to achieve our goals. Everyone is trusted to take ownership, move fast and have a meaningful impact. We prioritise personal and professional growth, keep things fun & we love to celebrate a milestone together.

In this role you’ll grow, be challenged and help shape the future of Xelix. If you’re excited about building something special with us, we’d love to hear from you.

About the role

We\'re seeking Mid-Senior Python Developers to join our back-end development team.

This is a varied and challenging programming role. Tasks could include writing code to manage incoming data, working with AI Engineers to analyse huge data sets, or writing REST APIs in Django to support the React front end.

Our ideal candidate takes pride in their work – producing clean, tested, beautiful code. Rather than give you a detailed set of requirements, we encourage engineers to take responsibility for solving the problem. There are many opportunities to innovate as you collaborate with stakeholders to design and implement new features.

You will be well supported to continue your professional development. This includes an annual conference allowance, a budget for books and a monthly session with your manager to identify and track your learning goals.

As Xelix continues to grow opportunities for you to develop your career becoming a Team Lead, Project Lead or Staff Engineer could be available to the right candidate.

What you'll be doing

• Implementing robust and scalable solutions in Python.
• Developing, using and designing REST APIs to efficiently deliver application components.
• Implementing performance improvement strategies.
• Ensuring the quality of code by writing comprehensive tests and participating in code reviews.

What you’ll bring

• 4+ years of Python coding professional experience
• Ability to learn and apply new technology quickly
• Ability to effectively communicate complex technical concepts to team members and stakeholders.

Desirable:

• Familiarity with coding in Django and the Django Rest Framework
• Degree in Computer Science (or similar), at 2:1 or above
• Amazon Web Services
• SQL / PostgreSQL
• Build pipeline and CI with GitHub, Jenkins, Docker, Terraform

What we offer in return

• Competitive salary of £60,000 - £80,000 depending on experience
• 27 days of annual leave (including 3 days Christmas closing), with the option to roll over 3 days
• Hybrid working with one day a week from our dog-friendly Hoxton office and on-site gym
• Comprehensive private medical & dental cover with Vitality
• Enhanced parental leave pay
• Learning & development culture – £500 personal annual budget
• We’re carbon-neutral and are working towards ambitious carbon reduction goals
• Lots of team socials & activities
• Annual team retreat

Want to learn more?

• About us
• Xelix blog
• Xelix news
• Xelix glassdoor

We believe that people from diverse backgrounds, with different identities and experiences make our company and product better. No matter your background, we\'d love to hear from you! And if you have a disability, please let us know if there\'s any way we can make the interview process better for you - we\'re happy to accommodate!

If you\'re a recruiting agency - we have an existing list of agencies we work with and we are not currently planning on expanding the list. Neither the Talent team nor hiring managers or the Support team will respond to cold outreach.

This is a full-time position, with standard working hours from 9:00 AM to 6:00 PM, Monday through Friday.

Interview Process

1. Introductory Call – A short Teams conversation with a Talent Partner to discuss your background and the opportunity.
2. Hiring Manager Interview – A 30–45 minute Teams meeting to explore your experience and fit for the team.
3. Technical Task or Presentation – A role-relevant exercise to demonstrate your skills and approach.
4. Final On-site Interview – An in-person meeting with our senior leadership team and co-founders at our office.

We strive to make the process clear, efficient, and respectful of your time.