BMLL Technologies Ltd

BMLL Technologies provides harmonized, high-resolution Level 3, 2, and 1 historical market data and analytics to capital markets participants so researchers and quants can analyze order book behavior…

AnalyticsCapital MarketsCloud NativeFinancial ServicesHistorical Market DataLevel 3 DataOrder BookQuantitative Researchbmlltech.com

BMLL Technologies Ltd

AnalyticsCapital MarketsCloud NativeFinancial ServicesHistorical Market DataLevel 3 DataOrder BookQuantitative Researchbmlltech.com

HQLondon, GB

Team Size80

Open Jobs2

Total Funding$55M

Latest Fundraise3 years ago

TL;DR

Founded: 2014

Product: Harmonised Level 3/2/1 historical market data and analytics (cloud-native)

Customers: Hedge funds, asset managers, banks, brokers, exchanges, regulators, academic institutions

Certifications: ISO27001

Notable investors: Optiver, Snowflake Ventures, Nasdaq Ventures, IQ Capital

Company Overview

Problem Domain

Long-form, high-fidelity historical market data and analytics for capital markets workflows (equities, ETFs, futures, US equity options).

Founded

2014

Industry

Financial Services

Tech Stack

APIs

S3/SFTP

Azure

Snowflake

JupyterLab

Python

Funding Track Record

- 2023-09-14

Crunchbase and company materials list a funding event on or around this date; company has reported a $21m strategic investment led by Optiver in a later/other round.

- 2024-09-30

Crunchbase records a Series B on Sep 30, 2024 with Optiver as lead investor.

21000000

Company materials report a $21m strategic investment led by Optiver.

Investor Signal

“Includes strategic and growth investors such as Optiver, Snowflake Ventures, Nasdaq Ventures and IQ Capital”

Join the Team

Databricks Lead Engineer (Contract)

HybridLondon, GB

Hybrid • London, GB

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 LinkedIn @BMLL.

Startup jobs. A lot of them.

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New This Week

Software Engineer

ContractMunich, DE

Contract • Munich, DE

Technical Writer

InternshipBelgrade, RS

Internship • Belgrade, RS

Product Designer

Full-timeNovi Sad, RS

Full-time • Novi Sad, RS

Software Engineer

Part-timeNiš, RS

Part-time • Niš, RS

Frontend Developer

InternshipAustin, US

Internship • Austin, US

Data Scientist

Full-timeNovi Sad, RS

Full-time • Novi Sad, RS

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BMLL transforms financial exchanges’ raw market data into an accessible and normalised view for customers across multiple use-cases. We hold over 10 years of full-depth market data across approximately 100 venues, this currently consists of about 1.5 billion HDF5 files (~1.5 PB) stored on S3 and catalogued in Postgres. These are partitioned by date, venue, and instrument.

While this structure has served us well, the enormous number of small files, with the Postgres catalogue in separate storage, is now the main constraint on how we evolve, back-up/recover, and share data. Our strategic direction is to migrate this processed layer to Delta Lake for both data and catalogue. In addition we are migrating our Data Products which currently sit in Snowflake over to Iceberg compatible Delta Tables in order to leverage benefits of performance, cost and manageability.

We are looking for an experienced Databricks Lead Engineer and Architect to join and support the Delta Lake and Delta Table re-engineering projects. This is a hands-on role and with direct contribution to the project.

The goal is not merely format migration, but addressing key architectural objectives for high-cardinality data:

Implement a Delta Lake architecture for large scale.
Model and partition L2/L3 order book data in Delta lake.
Implement metadata, compaction, and versioning.
Design a system that supports multiple delivery models downstream.
Implement a viable backup strategy at this scale with a 1 day RTO.

This is an opportunity for an experienced engineer to join a cutting-edge FinTech company and make an impact on a critical and large-scale re-engineering project.

Industry experience with Databricks
- Delta Lake
- Unity Catalog
- Delta Tables
- Delta UniForm (Universal Format)
Industry experience with Apache iceberg.
AWS, S3 Tables, Lake formation.
Industry experience in developing on a Linux platform.
Experience with industry-standard development methodologies such as source code control, unit testing and continuous integration
A self starter with the ability to self-organise.
Strong problem-solving skills
Strong communication skills

Industry experience with Snowflake,
Industry experience with petabyte scale data volumes.
Industry experience with Python.
Experience working with financial data.

BMLL Technologies Ltd

BMLL Technologies Ltd

TL;DR

Company Overview

Problem Domain

Founded

Industry

Tech Stack

Funding Track Record

Investor Signal

Founders

What we do

Join the Team

Databricks Lead Engineer (Contract)

Startup jobs. A lot of them.

Software Engineer

Technical Writer

Product Designer

Software Engineer

Frontend Developer

Data Scientist

Related Companies