Spendesk
Spendesk

Software Engineer - Cards

Permanent contract
Paris
Salary: Not specified
A few days at home
Experience: > 3 years
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Spendesk
Spendesk

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Questions and answers about the job

The position

Job description

We are looking for a talented Software Engineer to join our Cards team, a key part of the Payments Group at Spendesk. As part of this highly skilled and collaborative team, you will work on one of the core products Spendesk offers — our card payments platform. This is an exciting opportunity to work at the heart of our financial infrastructure, building scalable, secure, and reliable systems to manage customer funds, transactions, and card lifecycle operations.

The Payments Group oversees all money movement across Spendesk, including card issuance, wire transfers, balance management, and transaction processing. As Spendesk operates as a regulated Financial Services Institution, this team plays a vital role in ensuring compliance, security, and operational reliability.

In the Cards team, you will collaborate closely with Card Operators, Compliance teams, banking partners, and other internal stakeholders to ensure we provide the best-in-class card payment experience to our customers — while maintaining the highest standards of system reliability and scalability.

This role offers broad exposure, from technical design and development to operations, monitoring, and process improvements, making it ideal for someone who enjoys working across the full software development lifecycle. 

What you'll do

  • Design, develop, and maintain core components of Spendeskʼs card payment infrastructure, including card issuance, lifecycle management, and transaction processing.
  • Implement secure and efficient APIs for card operations and payment flows. Build and enhance internal tools to support card operations, compliance
  • monitoring, and fraud detection.
  • Work closely with the Product Manager to clarify requirements and contribute to technical design discussions.
  • Write well-documented, maintainable, and tested code to ensure the platform is resilient and easy to evolve.
  • Contribute to monitoring and alerting systems to ensure payment reliability and proactively address issues.
  • Participate in code reviews and knowledge sharing within the team to improve our engineering practices.
  • Collaborate with internal teams (Compliance, Operations, Customer Support) to investigate issues and help improve operational processes. 

    • Who you are

  • 3+ years of experience as a Software Engineer, ideally in backend
  • development.
  • Experience with Node.js and TypeScript in production environments.
  • Experience building and maintaining REST APIs in a high-availability environment.
  • An understanding or interest in learning about event-driven architecture. Proficient in SQL and relational database design (PostgreSQL preferred).
  • Experience writing comprehensive tests and working with modern CI/CD pipelines.
  • Comfortable collaborating across engineering, product, compliance, and operations teams.
  • Experience implementing and deploying applications on one or more cloud provider (AWS, GCP, Azure).
  • Fluent in English (spoken and written) — itʼs our business language. 

    • Nice to have

  • Knowledge with React and frontend developmentUnderstanding or experience working in regulated financial environments or
  • with payment service providers.
  • Previous work with AWS services, i.e. SQS, Lambda, Step Functions,
  • CodePipeline...
  • Experienced working with Kubernetes, Terraform or Kafka
  • Knowledge about systems observability, ideally working with Datadog
  • Strong system design skills, with the ability to design for scalability, fault tolerance, and high performance.
  • A track record of leading technical projects or mentoring other engineers. 

    • Our tech stack

  • Backend: Node.js (TypeScript)
  • Frontend: React/Redux
  • Datastores: PostgreSQL, Redis
  • Infrastructure: Terraform, Kubernetes, AWS (Lambdas, Step Functions)
  • Messaging and Queueing: SQS, Kafka, AWS EventBridge
  • CI/CD: AWS CodePipeline and GitHub Actions
  • Testing: Node test runner, Jest, Cypress 

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