At a Glance
- Tasks: Lead the design and implementation of innovative features in cutting-edge SaaS applications.
- Company: Join BMLL, a leading provider of financial data analytics with a collaborative culture.
- Benefits: Enjoy competitive salary, 25 days holiday, remote work options, and wellness budgets.
- Other info: Inclusive environment with excellent career growth and regular team socials.
- Why this job: Make an impact in FinTech while working with advanced technologies and a dynamic team.
- Qualifications: Proven experience in Python, SaaS development, and strong problem-solving skills.
The predicted salary is between 70000 - 90000 £ per year.
BMLL is the leading independent provider of harmonised Level 3, 2 and 1 historical data and analytics across global equities, ETFs, futures and US equity options. We provide market participants with immediate access to granular T+1 order book data and advanced analytics, enabling them to accelerate research, optimise trading strategies, and better understand market behaviour.
BMLL was acquired in 2025 by Nordic Capital, alongside minority shareholder Optiver, marking a joint commitment to accelerate the company’s next phase of growth. We offer an inclusive and collaborative culture, a hybrid working environment that includes regular days in our London office, weekly team lunches, and a variety of out-of-hours social activities.
This is a unique opportunity to build industry-leading technology, drive innovation and influence the direction of our company. The BMLL Lab & Vantage products are the market leading applications for data science and data visualisation on the largest financial datasets. This role involves working in a team of Python & Typescript engineers, alongside the SaaS applications Product Owner. As a senior engineer you will take the lead on design and implementation of new features.
Key Responsibilities:- Partner closely with Product Owner in translating complex requirements into clear, actionable engineering tasks.
- Contribute to the application design and development, with effective strategies for testability and product quality.
- Ensure the architecture of the system aligns with best practice and meets the goals for scalability, reliability & security.
- Provide mentorship to junior engineers.
- Proven experience in designing solutions in a fast-paced agile environment.
- Expertise in developing single-tenant and multi-tenant B2B SaaS applications with REST APIs and distributed microservices.
- Experience in delivering SaaS applications into front-office capital markets.
- Proficient in architecture design using AWS services such as Cognito, Lambda, Fargate, API Gateway, Terraform.
- Experience in data science and financial data visualisation applications in Typescript.
- Strong analytical and troubleshooting skills.
- Excellent communication skills to interact effectively with development teams and product managers.
- Excellent communication skills, with the ability to communicate fluently with both technical and non-technical audiences.
- Experience with data science tools, e.g. one or more of Spark, pandas, DuckDB, DataBricks, Snowflake.
- Knowledge of agile development and continuous delivery methodologies.
- Competitive salary
- 25 days holiday plus bank holidays
- Discretionary Bonus
- Pension Scheme
- Private Medical Insurance
- Work remotely abroad for up to 40 business days each year
- Life Insurance
- Childcare Nursery Scheme
- Combination of remote and London-based office working, with 2 days in the office per week.
- A yearly Well-being Physical Activity budget
- Continuous learning through funded training and challenging projects
- Collaborative culture
- Weekly team lunches
- Free Fruit, snacks, and drinks provided throughout the day (When office-based)
- Regular Team Socials
- Cycle to Work Scheme
We are an inclusive employer and welcome applicants from all backgrounds. We pride ourselves on our commitment to Equality and Diversity. We are committed to removing barriers throughout our hiring process. If you have any special requirements or require reasonable adjustments to help you access career opportunities at BMLL, please do let us know at careers@bmlltech.com.
Senior Python Engineer in London employer: BMLL Technologies
BMLL is an exceptional employer that fosters an inclusive and collaborative culture, offering a hybrid working environment in London with regular team lunches and social activities. Employees benefit from competitive salaries, generous holiday allowances, and opportunities for continuous learning and professional growth, making it an ideal place for those seeking meaningful and rewarding careers in the FinTech sector.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Python Engineer in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with folks on LinkedIn. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your Python projects, especially those related to data science or FinTech. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Tip Number 3
Prepare for interviews by brushing up on your problem-solving skills. Practice coding challenges and be ready to discuss your past projects in detail. We want to see how you think and tackle real-world problems!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who are genuinely interested in joining our team at BMLL.
We think you need these skills to ace Senior Python Engineer in London
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the Senior Python Engineer role. Highlight your experience with SaaS applications, Python, and any relevant FinTech projects. We want to see how your skills align with what we’re looking for!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you’re passionate about working at BMLL and how your background makes you a perfect fit. Don’t forget to mention your experience in agile environments and data visualisation.
Showcase Your Problem-Solving Skills:In your application, give examples of how you've tackled complex problems in previous roles. We love seeing candidates who can think critically and come up with innovative solutions, especially in fast-paced settings.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, you’ll find all the details about the role and our company culture there!
How to prepare for a job interview at BMLL Technologies
✨Know Your Tech Stack
Make sure you’re well-versed in Python and Typescript, as these are key for the role. Brush up on your experience with AWS services and REST APIs, and be ready to discuss how you've used them in past projects.
✨Showcase Your Problem-Solving Skills
Prepare to share specific examples of how you've tackled complex engineering challenges. Think about times when you had to troubleshoot issues or design solutions in a fast-paced environment, as this will resonate well with the interviewers.
✨Communicate Clearly
Practice explaining technical concepts in simple terms. You’ll need to interact with both technical and non-technical team members, so being able to bridge that gap is crucial. Consider doing mock interviews to refine your communication style.
✨Demonstrate Leadership and Mentorship
As a senior engineer, you’ll be expected to mentor junior team members. Be prepared to discuss your leadership experiences and how you’ve helped others grow in their roles. This shows you’re not just a great engineer, but also a team player.
