Senior Software Engineer (M/F)

Job description


French #Fintech Lemonway is a European accredited Payment Institution for the new economy and operates over 29+ countries.

Lemonway processes payments for marketplaces and crowdfunding platforms, by providing duly compliant payment services: KYC, crediting, fraud detection. We also secure funds and payments through a high-standard and high-performing product fully adaptable to our customer needs.

Join a hyper-growing and exciting company that brings one of the most powerful payment factory into a booming market:

  • 90+ motivated and talented employees
  • Shape the future of payments and work in the heart of the new digital economy
  • Be part of a supportive, knowledge-sharing team that empowers every single talent to reach their full potential
  • Work in a Tech and dynamic environment
  • Office in Paris downtown with a nice working environment


We are looking for a Senior .NET/C# Developer to join our Tech team. Reporting to one of our Tech Leads, you’ll join one of our squads. These squads are organized around four domains : Payments, Cash management, Compliance and Dashboard.

In this role, you will be responsible for :

  • Work with your team on delivering new features, expanding and maintaining existing features
  • Propose and setup technical improvements
  • Participate in code reviews
  • Share your knowledge and learn from others

Job requirements


Desired functional skills

  • Experience with card payment processing and settlement

Desired technical skills

  • Strong experience with .NET Core / C#
  • You also have experience with another development language (NodeJS, Go…)
  • TDD, Pair programming, software craftsmanship are not only buzzwords to you, they are part of your DNA
  • Experience with microservice architectures
  • Experience with some bits of our tech stacks:
    • RabbitMQ
    • Redis
    • Elasticsearch
    • Sql Server
    • MongoDB

Desired soft skills

  • You love working as part of a team, sharing your experience in a Agile environment
  • You are good at communicating and you are benevolent
  • You love solving hard and complex problems
  • You love learning and experiencing new things


  • At least 5 years of experience with similar technologies
  • Experience within a growing startup environment preferred


  • Contract type - CDI (Full Time - Permanent Employment Contract) 💼
  • Location - super cool office based in central Paris (Sentier) 🗼
  • Flexible working and remote policy up to 3 days a week 🏠
  • Enjoy your food allowance with a Swile card 💳
  • 50% reimbursement of your Navigo pass 🚅
  • Mutuelle Alan 👩‍⚕️
  • 25 days of holidays 🌴
  • International environment 🌍