Fintech SaaS Technical Team Lead

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 T1 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 companys 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 LinkedIn @BMLL.

About the Role

We are seeking an experienced engineering leader to enhance and expand our data-driven SaaS applications. This role involves leading a development team of Python & Typescript engineers working alongside the SaaS applications Product Manager. You will be building AWS cloud-native data science and visualisation applications using Python React Typescript and AWS.

Why Apply

This is a unique opportunity to build industry-leading technology drive innovation and influence the direction of our company. The BMLL Lab & Vantage applications are the market leading applications for data science and data visualisation on the largest financial datasets. You will be part of a dynamic team that values innovation learning and collaboration.

Key Responsibilities

Lead and manage a development team of Python and Typescript engineers both in-house and near-shored.

Develop technology roadmaps aligned with business goals.

Oversee 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.

Required Skills & Experience

Leadership: Proven experience in managing a development team in a fast-paced agile environment.

SaaS: Expertise in developing single-tenant and multi-tenant B2B SaaS applications with REST APIs and distributed microservices.

FinTech: Experience in delivering SaaS 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 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