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Senior Engineer in Paris


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Job Description

About Upflow

Getting paid effectively remains a significant problem for non-tech B2B businesses in Europe. At Upflow, we're on a mission to help our customers save time and money getting paid and gain deep insights into their customer exposure. We're creating a fully fledged payment platform from scratch and we aim to become the industry standard for B2B payments. Think Stripe but for traditional (non-tech) businesses. It's an incredibly complex and multi-faceted problem, which remains largely unsolved today.


  • We’re building a next generation, state-of-the-art payments platform for European businesses. We’re also a regulated financial institution (PSP license).
  • A growing, close knit team of 9 people (3 engineers) taking on a massive product and engineering challenge.
  • We’re addressing a huge customer pain in an extremely large market.
  • We think big - we’re building the next European fintech and want you to join us.
  • We're in the latest eFounders batch, collectively our peers have raised over $120M in 2018. We’ve raised as well.

Our Stack

  • React on the frontend
  • Node, express, graphql, sequelize, postgres and redis on the backend.
  • We have two microservices: the payments stack & the api.
  • CI/CD through circleci, hosted on heroku, code on github
  • We have some legacy code in JavaScript, but we’re writing all the new stuff in Typescript


  • Have an entrepreneurial mindset and are at ease in a very fast paced and rapidly changing environment.
  • 3+ years of industry experience in software engineering with full-stack web applications.
  • An expert in modern javascript development methodology, process and tooling (or are willing to become one).
  • Proven track record of designing and building extremely high quality user facing applications.
  • Pragmatic approach to engineering that strikes a balance between seamless experiences, beautiful code, maintainability, and time to market.
  • Appreciation for a test-driven, code-review culture.

What you will do

  • Own your work: lead projects from concept to completion. You’re in control of your own success.
  • Build & improve code across the entire stack (see below) for new and existing products.
  • Practice and encourage software engineering best practices: reasonable test coverage, appropriate modularisation, designing cohesive interfaces, and making the call on technical trade-offs.
  • Ship code to customers every week and measure its impact.
  • Collaborate in technical reviews to strengthen our architecture and system designs.


  • A fulfilling, challenging work experience building a product that solves a large customer pain.
  • Competitive salary and equity.
  • Quarterly team building off sites
  • Latest Macbook pro.
  • Ability to spend a significant amount of time working remotely (if that’s what floats your boat). And time off when you need it.
  • Lovely offices located in the heart of the Parisian startup ecosystem.


About Upflow

  • Fintech

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