Junior Python Developer

lloyds banking group; Halifax; On-site; GBP 43,000 - 49,000; Full time

Job summary

A leading banking institution in the UK is seeking a Junior Python Developer to engage in Python development, automation, and financial modelling. This hybrid role requires collaboration with experienced professionals and a passion for learning. Responsibilities include designing financial models and ensuring code quality. The ideal candidate should possess Python experience and good communication skills. Competitive salary and benefits package offered, aimed at driving positive change in finance.

Benefits

Generous pension contribution of up to 15%

Annual performance-related bonus

Share schemes including free shares

Discounted shopping benefits

28 days holiday plus bank holidays

Wellbeing initiatives and parental leave policies

Qualifications

• Experience in Python model development and implementation.
• Interest in automation and financial modelling.
• Familiarity with CI/CD pipelines.

Responsibilities

• Support the design and maintenance of Python-based financial models.
• Collaborate with developers and analysts to translate needs into solutions.
• Participate in agile delivery and prioritize business value.

Skills

Python model development

Software development principles

Data handling and financial models

Git/GitHub

Communication skills

Curiosity and eagerness to learn

Tools

Virtual environments

Package management tools

Testing frameworks

Documentation tools

Job description

End Date

Monday 09 February 2026

Salary Range

£43,803 - £48,670

Flexible Working Options

Flexibility in when hours are worked, Hybrid Working, Job Share

Job Description Summary

Step into a role where you’ll learn Python development hands on while helping shape the future of Retail Finance. As a Junior Python Developer, you’ll build smart automation and financial models that power real business change. You’ll work alongside talented developers, analysts, and experts who’ll support your growth every step of the way. Expect to get stuck into real delivery, from designing and testing through to creating user friendly model interfaces. If you’re curious, collaborative, and excited to grow your technical skills, this is your chance to make an impact from day one!

Job Description

Key Details

JOB TITLE: Junior Python Developer

SALARY: as per pay range

LOCATION: Leeds, Wellington Place

ADDITIONAL LOCATION(S): Halifax, Bristol, Cardiff, Newport

HOURS: Full Time, 35 hours per week

WORKING PATTERN: Our work style is hybrid, which involves spending at least two days per week, or 40% of our time, at one of our office sites

About this Opportunity

Are you passionate about learning Python development and keen to build your skills in automation and financial modelling? Do you want to contribute to meaningful change in Retail Finance? If so, we’d love to hear from you!

We’re looking for a Junior Python Developer to join our Retail Finance Change team and support the delivery of innovative financial solutions. You’ll bring curiosity, a willingness to learn, and a collaborative mindset as we work on a strategic backlog of development and optimisation.

Why Lloyds Banking Group

We’re on an exciting journey to transform our Group and the way we’re shaping finance for good. We’re focusing on the future, investing in our technologies, workplaces, and colleagues to make our Group a great place for everyone. Including you.

Day to day responsibilities

• Support the design, build, UAT and ongoing maintenance of Python-based financial models and automation tools.
• Work closely with experienced developers, Business Analysts, and domain experts to translate business needs into technical solutions.
• Contribute to developing efficient, maintainable code for financial models and automation tasks.
• Support the creation of user-friendly interfaces for model execution and reporting.
• Help ensure code quality through unit, integration, and system tests.
• Participate in design forums and peer code reviews.
• Collaborate in agile delivery, including planning, backlog refinement, demos and retros, and helping prioritise work that drives measurable business value.
• Demonstrate a proactive commitment to continuous learning and professional growth, seeking opportunities to expand your technical expertise and contribute to team success.

What you’ll need

• Experience of Python model development and implementation.
• A basic understanding of core software development principles.
• An interest in working with data and/or financial models.
• Familiarity with common Python tooling and best practices, including:
  • Virtual environments.
  • Package management (e.g. uv, pip, poetry).
  • Source control (e.g., Git/GitHub) for collaborative development.
  • CI/CD pipelines for automated testing and deployment.
  • Testing frameworks (e.g. pytest, unittest).
  • Code quality (e.g. flake8, black, isort, mypy, ruff).
  • Documentation tools (e.g., MkDocs, Sphinx) for maintainable technical documentation.
• Good communication and presentation skills.
• Passion for learning and staying ahead of the curve, and an ambition to become an experienced Python developer.

And any experience of these would be really useful

• Experience or interest in business analysis.
• Exposure to front‑end technologies e.g. React.
• Curiosity about data processing and validation libraries (Polars, Pandera), numerical computing (NumPy, Numba), and API frameworks (FastAPI).

About working for us

Our ambition is to be the leading UK business for diversity, equity and inclusion supporting our customers, colleagues and communities and we’re committed to creating an environment in which everyone can thrive, learn and develop.

We were one of the first major organisations to set goals on diversity in senior roles, create a menopause health package, and a dedicated Working with Cancer Initiative.

We offer reasonable workplace adjustments for colleagues with disabilities, including flexibility in office attendance, location and working patterns. And, as a Disability Confident Leader, we guarantee interviews for a fair and proportionate number of applicants who meet the minimum criteria for the role with a disability, long‑term health or neurodivergent condition through the Disability Confident Scheme.

We provide reasonable adjustments throughout the recruitment process to reduce or remove barriers. Just let us know what you need.

We also offer a wide-ranging benefits package, which includes:

• A generous pension contribution of up to 15%
• An annual performance‑related bonus
• Share schemes including free shares
• Benefits you can adapt to your lifestyle, such as discounted shopping
• 28 days’ holiday, with bank holidays on top
• A range of wellbeing initiatives and generous parental leave policies

Want to do amazing work, that’s interesting and makes a difference to millions of people? Join our journey.

At Lloyds Banking Group

We're driven by a clear purpose; to help Britain prosper. Across the Group, our colleagues are focused on making a difference to customers, businesses and communities. With us you'll have a key role to play in shaping the financial services of the future, whilst the scale and reach of our Group means you'll have many opportunities to learn, grow and develop.

Data privacy statement

We keep your data safe. So, we'll only ever ask you to provide confidential or sensitive information once you have formally been invited along to an interview or accepted a verbal offer to join us which is when we run our background checks. We'll always explain what we need and why, with any request coming from a trusted Lloyds Banking Group person.

Commitment to diversity

We're focused on creating a values‑led culture and are committed to building a workforce which reflects the diversity of the customers and communities we serve. Together we’re building a truly inclusive workplace where all of our colleagues have the opportunity to make a real difference.