---
title: 'Senior Data Scientist, Growth at ARQ'
canonical: 'https://feeny.ai/job/senior-data-scientist-growth-arq-london-hdmayefc3k68'
type: 'job'
last_seen: '2026-09-11'
---

# Senior Data Scientist, Growth at ARQ

- **Company:** ARQ
- **Location:** London, United Kingdom
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-08-12
- **Last confirmed live:** 2026-09-11
- **Apply:** https://jobs.ashbyhq.com/arq/9b53bbd7-98dc-477a-b215-09e8f635b00d

## Job description

## What We’re Looking For

We're looking for a Senior Data Scientist to join ARQ's Growth team as our first data science hire – owning all data science initiatives across Growth and Marketing, starting with predicting customer lifetime value across our markets and acquisition channels. You'll report directly to the Head of Growth and our COO. You’ll be responsible for developing, maintaining, and improving LTV prediction models across our four countries, helping us make sharper decisions on growth investment, channel performance, acquisition quality, and long term customer value. This is a high ownership role for someone who has worked on consumer growth, LTV, acquisition, retention, or monetisation problems in a B2C or D2C environment. You should be comfortable taking ambiguous business questions, turning them into measurable modelling problems, and building solutions that influence real commercial decisions.

## What You’ll Be Doing

- Design, build, maintain, and improve lifetime value prediction models across ARQ’s countries and acquisition channels.
- Work closely with Growth & Marketing, Product, Finance, Data Engineering, and Engineering teams to understand business needs and translate them into modelling solutions.
- Help evaluate acquisition quality by channel, campaign, geography, customer segment, and product behaviour.
- Build models that support better decisions around growth spend, payback periods, customer quality, retention, and long term value.
- Analyse large scale customer, product, marketing, and transaction datasets to identify patterns, risks, and opportunities.
- Continuously monitor model performance and improve accuracy, reliability, and business impact over time.
- Create clear frameworks and metrics that help teams understand the trade offs behind growth decisions.
- Partner with Data Engineering and Engineering teams to productionise models, pipelines, and reporting where needed.
- Bring a pragmatic approach to modelling, balancing technical depth with commercial impact.
- Over time, contribute to other Data Science challenges across Growth and the wider business.

## What You’ll Need

- 5+ years in Data Science, Machine Learning, Applied Statistics, Analytics, or a related discipline.
- Experience building prediction models in a consumer business (B2C, D2C), ideally around LTV, growth, acquisition, retention, churn, monetisation, or customer value.
- Strong Python skills and experience working with large scale datasets.
- Solid understanding of supervised learning techniques, model evaluation, feature engineering, and statistical trade offs.
- Ability to translate ambiguous commercial questions into structured data science problems.
- Strong business judgement and the ability to connect model outputs to real decisions.
- Experience working cross functionally.
- Clear communication skills, especially when explaining modelling assumptions, limitations, and recommendations to non technical stakeholders.
- Comfortable operating in a fast moving environment with high ownership and evolving priorities.
- Fluent in English, as we collaborate with teams across the globe.

## Nice To Have

- Experience in fintech, banking, payments, investing, lending, or another financial consumer product.
- Experience at a high growth B2C or D2C company, such as consumer fintech, health tech, subscription, retail, wellness, or marketplace businesses.
- Experience with LTV, CAC, payback period, acquisition efficiency, cohort modelling, retention modelling, churn prediction, or marketing mix related problems.
- Experience working across multiple countries, currencies, channels, or customer segments.
- Experience productionising models or working closely with Engineering and Data Engineering teams to deploy data science solutions.
- Familiarity with MLOps, model monitoring, experiment design, causal inference, or incrementality measurement.

## Benefits

- Competitive salary and benefits
- Stock options, so you own part of what you build
- Discretionary performance bonus
- The latest tools and technology
- A world-class team that will challenge and grow your skills
- The opportunity to help build the best fintech app in Latin America
- Office Policy: 3-4 days a week in-office

## About ARQ

## Company Overview
- **One-liner**: ARQ (formerly DolarApp) is a global fintech platform that provides multi-currency accounts, real-time currency conversion, and investment access to US stocks and ETFs for individuals across the Americas.
- **Entity Type**: Private (funding stage not disclosed; raised tens of millions from top-tier investors)
- **Headquarters**: Not publicly available (serves the Americas; localized sites for Argentina and Mexico)
- **Founded**: 2021
- **Founders**: Not publicly available

## Core Business
- **Primary industry**: Fintech – cross‑border banking, payments, wealth management
- **Target customers**: B2C – travelers, investors, professionals, and global citizens in Latin America and beyond
- **Mission**: “Modern finance for the global era” – to give customers control over their money with faster, cheaper, and more transparent financial rails.

## Products & Services
- **ARQ Multi‑Currency Account**: A digital account supporting USD, EUR, and local currencies (e.g., Argentine peso, Mexican peso). Users can convert between currencies at real market rates with no hidden fees.
- **ARQ Debit Card**: A Mastercard (inferred) for spending at leading conversion rates with zero commission or hidden charges.
- **ARQ Investments**: Access to US stocks and ETFs directly from the ARQ account, enabling long‑term wealth building.
- **Payment Rails**: US and European local account details to receive and send payments globally.

## Market Standing
- **Valuation**: Not publicly available
- **Key Metric (Private)**: Total funding – “tens of millions of dollars” from renowned investors; 2 million users as of 2026-07-01
- **Notable Investors**: Sequoia Capital, Founders Fund, Brevan Howard Digital, Y Combinator, Kaszek Ventures
- **Growth Signals**: Rebranded from DolarApp to ARQ in 2024 (per Sequoia partnership date); rapid user growth (2M people); expansion across the Americas; product diversification into investing.

## Competitive Advantages
- **Transparent pricing**: Real market conversion rates, no hidden fees – a stark contrast to traditional banks
- **Global accounts**: Users get US and EU bank details and a debit card usable worldwide
- **World‑class backing**: Sequoia, Founders Fund, YC, etc. provide credibility and strategic support
- **Elite team**: Small, high‑caliber team with experience at Revolut, Uber, Amazon, Block, and UBS, enabling fast execution
- **Vertical integration**: Combining payments, currency exchange, and investing in one app

## Strategic Focus
- **Build the financial system of the next century** – replace legacy banking middleware with direct, customer‑owned rails
- **Scale across the Americas** – starting in Argentina and Mexico, then expanding to other markets
- **Deepen wealth management** – add more asset classes and long‑term savings tools
- **Maintain a lean, high‑impact team** – “small teams with the best talent outcompete massive companies”

## Why Work Here
- **Culture**: “Long‑term ambition and absolute conviction”; “nimble, but ambitious” – the careers page describes a mission‑driven, execution‑focused environment
- **Team & autonomy**: Small teams own meaningful product areas; high ownership and rapid iteration
- **Remote/office**: Not explicitly stated, but likely hybrid or remote‑friendly given the global nature of the business
- **Notable**: Founders and early employees have built profitable products at iconic companies; strong emphasis on “world‑class in everything we do”
- **Perks**: Not publicly disclosed, but likely competitive compensation and equity in a high‑growth fintech

## Sources
1. [arqfinance.com](https://www.arqfinance.com/en-AR)
2. [jobs.ashbyhq.com/arq](https://jobs.ashbyhq.com/arq)
3. [sequoiacap.com/companies/arq/](https://sequoiacap.com/companies/arq/)
4. [arqfinance.com/en-AR/careers](https://www.arqfinance.com/en-AR/careers)

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