At a Glance
- Tasks: Lead the design and implementation of innovative SaaS applications in a collaborative team.
- Company: Join BMLL, a leading provider of financial data analytics with a vibrant culture.
- Benefits: Enjoy competitive salary, 25 days holiday, remote work options, and wellness perks.
- Other info: Inclusive environment with excellent career growth and regular team socials.
- Why this job: Make an impact in FinTech while working with cutting-edge technology and talented professionals.
- Qualifications: Experience in software development, particularly in Python, Typescript, and SaaS applications.
The predicted salary is between 60000 - 80000 £ per year.
About BMLL
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.
For more information, visit our website or follow us on X (@bmlltech) and Linked In @ bmll
About the Role
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 Saa S 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.
- Leadership: Proven experience in designing solutions in a fast-paced agile environment.
- Saa S: Expertise in developing single-tenant and multi-tenant B2B Saa S applications with REST APIs and distributed microservices.
- Fin
Tech: Experience in delivering Saa S applications into front-office capital markets.
- Design: Proficient in architecture design using AWS services such as Cognito, Lambda, Fargate, API Gateway, Terraform.
- Data Skills: Experience in data science and financial data visualisation applications in Typescript.
- Problem Solving: Strong analytical and troubleshooting skills.
- Communication: Excellent communication skills to interact effectively with development teams and product managers.
Desirable Skills
- 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, Duck DB, Data Bricks, 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
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Senior Software Engineer (AI & SaaS Applications) in London employer: Bmll-Technologies-Ltd
BMLL is an exceptional employer that fosters an inclusive and collaborative culture, offering a hybrid working environment with regular team lunches and social activities in London. Employees benefit from competitive salaries, generous holiday allowances, and a commitment to continuous learning through funded training and challenging projects, making it an ideal place for those seeking meaningful and rewarding careers in the FinTech sector.
