At a Glance
- Tasks: Lead complex engineering projects and mentor engineers across Europe and the US.
- Company: Join Europe's largest equities exchange and be part of a skilled engineering team.
- Benefits: Competitive salary, private medical, 25-30 days holiday, and complimentary lunch.
- Other info: Dynamic role with opportunities for growth and collaboration in a vibrant London office.
- Why this job: Make a real impact in financial markets with cutting-edge technology and high standards.
- Qualifications: Strong Python skills, leadership experience, and a degree in Computer Science preferred.
The predicted salary is between 80000 - 100000 £ per year.
We are working exclusively with one of the world's largest exchange operators on a Principal Python Engineer hire in London. This is a senior individual contributor role within a small, highly skilled engineering team building and expanding the data pipeline and event streaming infrastructure that powers the largest equities exchange in Europe.
The Role
You will lead complex engineering projects end to end, working closely with business development and sales teams to deliver new products and features, and mentoring engineers across Europe and the US. The team takes software craftsmanship seriously — testable, maintainable code, pair programming and TDD are core to how they work.
Tech Stack
- Expert Python, advanced SQL, deep Linux knowledge
- PostgreSQL, Snowflake
- Apache Kafka, Apache Airflow
- Django, Flask or FastAPI
- TDD, BDD, pair programming
- Java familiarity a plus
What They Are Looking For
- Principal or Staff level Python engineer with strong leadership skills
- Degree in Computer Science or related field preferred
- Financial markets experience a strong plus — market data, order management, algorithmic trading or financial systems integration
- Someone who takes genuine pride in code quality and engineering standards
The Package
- Competitive salary and incentive compensation
- Private medical including dental, private GP service, life insurance
- 7% pension contribution, no employee contribution required
- 25 days holiday rising to 30, complimentary lunch daily
- 4 days in office, London
Note: interviews are starting in 1-2 weeks so worth reaching out now. Send your CV across and we will be in touch.
Principal Python Engineer in London employer: Signify Technology
Join a leading force in the financial sector as a Principal Python Engineer in London, where you'll be part of a dynamic and innovative team dedicated to building cutting-edge data infrastructure for Europe's largest equities exchange. With a strong emphasis on software craftsmanship, you will enjoy a collaborative work culture that values mentorship and professional growth, alongside competitive benefits such as private medical care, generous holiday allowances, and a supportive environment that fosters both personal and career development.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Python 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 Signify Technology 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 Signify Technology.
✨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 Signify Technology.
✨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 Signify Technology 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 Principal Python 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 Signify Technology.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Signify Technology 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 Signify Technology
✨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 Signify Technology 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.
