J

Joko

Cashback shopping app with carbon tracking

Data Engineer

Full-Time
€70k - €100.2k/yr+ Equity
Senior
Barcelona, Spain+1 moreMore locations: Île-de-France, France
HybridIf you live in Paris, you may work from home or the office; elsewhere, coworking space access and a budget are available. Work from most countries for up to 3 months per year.
Data & AnalyticsData Engineering

About the job

Requirements
  • You have 5+ years of experience in data engineering or a similar role, with demonstrated ownership over building and/or scaling data infrastructure.
  • You have led the implementation or scaling of a modern data stack, such as Airflow, dbt, BigQuery or Snowflake, or event streaming, in a startup or scale-up environment.
  • You are proficient in SQL and Python.
  • You have solid hands-on experience with orchestration tools such as Airflow or similar, and cloud environments such as Snowflake, Google Cloud Platform, or Amazon Web Services.
  • You have a strong understanding of data modeling, warehousing principles, and performance optimization techniques.
  • You use AI in your daily work and are interested in AI applications related to the data field.
  • You value clean architecture, documentation, and continuous improvement.
  • You can clearly communicate with technical and non-technical stakeholders.
  • You are fluent in written and spoken English.
Responsibilities
  • Own and scale the data infrastructure, working closely with Data Analysts, Product Managers, and Engineers to build a reliable, secure, and high-performing data platform.
  • Lead the evolution of the data stack to make it more scalable, reliable, and cost-efficient; anticipate growth in data volume and complexity, and design systems with performance in mind.
  • Lay data engineering foundations that enable AI data products used by stakeholders across the company.
  • Build robust processes to ingest data from internal systems, APIs, and external tools, and orchestrate them efficiently.
  • Support Data Analysts by improving dbt project organization, factorizing jobs, and ensuring quality and scalability of transformations across the stack.
  • Implement monitoring, testing, and alerting systems to ensure data freshness, reliability, and accuracy across the company.
  • Define and enforce access control policies, including in Snowflake and Metabase, to ensure data is secure, well-permissioned, and compliant.
  • Document models, pipelines, and workflows to support onboarding, collaboration, and long-term team autonomy.
  • Support new market launches, manage growing data volumes, and help centralize pipelines within an orchestration tool.
Desired Qualifications
  • You are pragmatic, curious, and proactive.

About the company

Joko operates a mobile shopping app that gives users cashback, coupons, and discounts from a wide range of retailers. It earns commissions through affiliate marketing when users make purchases via the app. The app is free for users and automatically calculates the carbon footprint of each transaction, encouraging more conscious consumption. How it works: users browse partners in the app, activate deals, and make purchases through affiliate links to get rewards; the platform tracks sales and credits cashback automatically to the user’s account. How it is different: it combines traditional cashback and coupon offers with real-time carbon footprint insights for each purchase, offering environmental visibility alongside savings, within a broad consumer market. What the company aims for: to help people save money on everyday spending while promoting greener consumption and to grow its affiliate network across retailers.

Company Size

201-500

Company Stage

Series A

Total Funding

$12.8M

Headquarters

Paris, France

Founded

2018

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Simplify's Take

What believers are saying

  • Joko reported over $50 million revenue in Europe before the U.S. launch.
  • Joko handles more than 2 million product views daily, showing strong engagement.
  • Joko is hiring across product, backend, and AI roles in Paris and Barcelona.

What critics are saying

  • Joko's U.S. launch faces Amazon, Apple, DoorDash, and Walgreens partnerships.
  • Affiliate commissions expose Joko to retailer pricing cuts and partner churn in 2026.
  • If U.S. CAC outruns commissions, Joko becomes a subscale consumer app with weak margins.

What makes Joko unique

  • Joko combines cashback, price comparison, and automatic coupons in one app.
  • Joko launched in the U.S. on September 21, 2026, with 6 million European users.
  • Joko's AI assistant Juno spans 50 million products across 40,000 merchants.

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Benefits

  • Flexible Work Hours
  • Remote Work Options
  • Phone/Internet Stipend
  • Gym Membership
  • Health Insurance
  • Meal Benefits

Growth & Insights and Company News

Headcount

6 month growth

-2%

1 year growth

2%

2 year growth

-23%
PR Newswire
Sep 21st, 2026
Joko launches AI shopping app in US with 6M European users and $50M revenue

Joko, an AI-powered shopping app used by more than 6 million European consumers, has launched in the US. The app helps users compare prices, track spending, and earn cash back across more than 10,000 partner merchants, including Amazon, Nike, and Sephora. The company generated more than $50 million in revenue in Europe. Joko's AI assistant, Juno, draws on a catalogue of over 50 million products from 40,000 merchants and processes 2 million product views daily. Founded in 2018 by Xavier Starkloff, Alexandre Hollocou, and Nicolas Salat-Baroux, Joko combines product discovery, price comparison, and automatic coupons in one platform. The app is now available on the App Store and Google Play.

Partech
Sep 16th, 2026
Joko raises a €10 million Series A! | Partech

Partech is a global investment platform for tech and digital companies, led by ex-entrepreneurs and operators of the industry spread across offices in San Francisco, Paris, Berlin and Dakar. Partech invests in Internet and information technology startups at seed, venture and growth stages.

Medium
Jul 21st, 2021
Hellojoko launched version of the app on Jul 20th 21'.

Yesterday, Hellojoko released a new version of the app that makes it possible for you to shop on any website using Joko.

Silicon Canals
Oct 8th, 2020
This Paris based fintech startup rewards you for your everyday expenses; raises €10M

Joko, a mobile app that rewards its users every time they spend using its bank card raised €10M funding from Partech and Axeleo. Read more..

Tech.eu
Oct 8th, 2020
Paris-based fintech startup Joko seals €10 million Series A to expand cashback rewards program

Joko, a French fintech company aiming to disrupt cashback rewards, has raised a €10 million Series A round to begin expanding into other European countries. The funding comes from two French VCs, Partech and Axeleo, who also participated in a €1.6 million seed round last year. Based on the Open Data initiative enabled by the […]