At a Glance
- Tasks: Develop and maintain applications for the Metals trading business using Python.
- Company: Join SEFE, a leading international energy company focused on sustainability.
- Benefits: Competitive salary, hybrid working model, 25 days holiday, and wellness benefits.
- Other info: Collaborative environment with excellent career growth and mentorship opportunities.
- Why this job: Gain hands-on experience in tech while learning about metals markets and AI-assisted development.
- Qualifications: Strong foundation in Python, familiarity with SQL, and a passion for technology.
We are looking for an ambitious Junior Python Developer to join our Metals Trading Technology team. Embedded directly within the trading business, you will work alongside traders, analysts and experienced developers to build, enhance and support the applications that underpin the desk's activities.
This is a hands-on software engineering role offering exposure to the full application lifecycle, from development and testing through to production support. You will have the opportunity to develop your technical expertise across the full stack while building a strong understanding of metals markets and commodities trading. The role is ideal for someone who is passionate about technology, excited by AI-assisted engineering, and eager to learn within a high-performing and collaborative environment.
WHAT WILL YOU DO
- Develop, enhance and maintain applications that support the Metals trading business, contributing across both front-end and back-end technologies.
- Support business-critical production systems by investigating, troubleshooting and resolving application issues.
- Work closely with traders, analysts and fellow developers to understand business requirements and deliver effective technology solutions.
- Leverage AI-assisted development tools to improve productivity and accelerate delivery, while validating outputs to ensure quality and reliability.
- Participate in code reviews and adopt engineering best practices, including testing, maintainability and version control standards.
- Build a strong understanding of metals markets, trading workflows and business processes to help deliver better technical solutions.
- Take ownership of assigned tasks, collaborating effectively with the team to deliver work to a high standard.
- Continuously develop your technical capabilities and professional skills through hands‑on experience, feedback and mentorship.
WHAT WILL YOU BRING
- A strong foundation in Python 3.12+, gained through academic studies, personal projects, internships, bootcamps or early professional experience.
- Familiarity with SQL databases and an understanding of how applications store, manage and retrieve data; exposure to MongoDB or other NoSQL technologies is advantageous.
- Experience with, or a desire to learn, data-processing libraries such as Pandas and NumPy.
- An interest in Artificial Intelligence, Large Language Models (LLMs) and AI-augmented software development.
- Familiarity with Git-based version control and an appreciation for testing, code reviews and software quality practices.
- A proactive, can‑do attitude, strong learning agility, and the resilience and ownership mindset needed to thrive in a fast-paced environment.
- Excellent collaboration and communication skills, coupled with a genuine enthusiasm for learning about metals markets, commodities trading and the wider energy sector.
ABOUT US
SEFE is an international energy company anchored in Europe, delivering energy solutions that ensure reliable and affordable supply. Our activities span the entire energy value chain – from origination and trading to sales, transport and storage. With decades of trading expertise and a growing LNG portfolio, SEFE is one of Europe’s leading suppliers to industrial customers, providing more than 200 TWh of gas and power each year. We supply over 50,000 clients, from small businesses to municipalities and multinational organisations. By investing in clean energies, we support our customers on their decarbonisation journey and contribute to the energy transition. SEFE employs over 2,000 people worldwide and is owned by the Federal Government of Germany.
Securing energy – now and for the future.
OUR BENEFITS
In return we offer a competitive starting salary supported by a comprehensive range of financial, lifestyle and wellness benefits with the flexibility to follow a hybrid working model.
- bonus earning potential
- non-contributory pension with 10% employer contribution
- 25 days holiday plus bank holidays and volunteering days
- buy / sell holidays
- life assurance
- medical and dental insurance (family cover)
- range of optional flexible benefits
We are committed to supporting your career growth with opportunities to develop both your knowledge and experience through a blended approach to learning.
Join SEFE and help us secure energy supply across Europe and shape a better, more sustainable tomorrow.
Job Title: Junior Python Developer (m/w/d)
Job Country: United Kingdom
Job Location: London, United Kingdom
Posting Start Date: 24/07/2026
Business Function: Information Technology
Junior Python Developer (m/w/d) employer: SEFE Group
SEFE is an excellent employer for those looking to make a significant impact in the energy sector, particularly as an Enterprise Architect – Cloud. With a commitment to inclusivity and professional development, employees benefit from a supportive work culture that encourages innovation and collaboration. Located in London, the company offers a hybrid working model, allowing for flexibility while being part of a dynamic team dedicated to driving cloud transformation and supporting the energy transition.
StudySmarter Expert Advice🤫
We think this is how you could land Junior Python Developer (m/w/d)
✨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 SEFE Group 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 SEFE Group.
✨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 SEFE Group.
✨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 SEFE Group 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 Junior Python Developer (m/w/d)
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 SEFE Group.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at SEFE Group 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 SEFE Group
✨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 SEFE Group 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.
