Software Engineer - Fintech
Mews · Spain
- Hybrid
- Full-time
- $110,000 / year
- Spain
Job highlights
- Build global fintech payment products.
- Full-cycle engineering: design to deployment.
- Backend heavy: .NET on Azure.
- Collaborate in cross-functional Agile teams.
- Focus on secure, scalable financial systems.
About the role
Software Engineer - Fintech
We're looking for a Software Engineer to join one of our Fintech teams at Mews. You'll work on the payments and financial products that hotels around the world use every day: charges, refunds, payouts, subscriptions, multi-currency flows, and more. This is the layer that makes Mews a financial platform, not just a PMS.
You'll be part of a small, cross-functional team working across the full cycle: technical design, implementation, code reviews, CI/CD deployments, and observability. The work is backend-heavy (.NET on Azure) with some frontend in React/TypeScript, and the systems you build are real: high volumes, multi-country, integrations with major payment partners, and a checkout SDK already running in production with live clients.
At Mews, we value open communication, trust, and constant learning. Our teams follow Agile practices and focus on flow, delivery, and collaboration.
Your mission, should you choose to accept it:
- Build and maintain backend services and APIs that power payments and financial products for hotels globally.
- Work end-to-end across design, implementation, testing, deployment, and observability of the features you own.
- Participate actively in technical design and code reviews, raising the bar for quality and reliability across the team.
- Gain progressive ownership over parts of the product, reducing dependencies and helping the team move faster.
- Collaborate closely with engineers, PM, QA, and design in a cross-functional team that ships together.
- Contribute to building systems that are secure, scalable, and correct in regulated, multi-currency, multi-country environments.
You’ll be a great fit if you bring a few of the below with you:
- Strong, recent experience in C# and .NET Core building real backend systems and APIs, not isolated features.
- Background in fintech, payments, banking, or other regulated environments (insurance, audit, compliance, etc.).
- Experience working on a large product or system where correctness, reliability, and scale actually matter.
- Comfort working across the full engineering cycle: from design to deployment to keeping things running in production.
- A mindset that goes beyond the ticket: you think about the user, the business impact, and the edge cases nobody wrote down.
- Clear communication and ability to work well in a cross-functional team.
Nice to have:
- React / TypeScript for occasional frontend work.
- Messaging systems: Kafka, RabbitMQ, Azure Service Bus.
- Exposure to audit trails, ledger systems, reconciliation, or compliance requirements.
- Going beyond pure engineering to shape what gets built, talk to users, define problems, and think about the business, not just the code.
Key skills/competency
- Software Engineering
- Fintech
- .NET Core
- C#
- Azure
- React
- TypeScript
- API Development
- Payments Systems
- Agile Methodologies
Skills & topics
- Software Engineer
- Fintech
- C#
- .NET Core
- Azure
- Backend Development
- API Development
- Payments
- Agile
- Software Development
How to get hired
- Tailor your resume: Highlight C#/.NET Core, fintech, and full-cycle experience.
- Showcase problem-solving: Emphasize user focus and business impact in your application.
- Prepare for technical interviews: Be ready to discuss backend design and distributed systems.
- Demonstrate teamwork: Highlight cross-functional collaboration and Agile experience.
- Ask insightful questions: Show curiosity about Mews's fintech platform and growth.
Technical preparation
Practice C#/.NET Core coding challenges.,Review distributed systems and API design.,Study Azure services and CI/CD concepts.,Understand financial transaction flows.
Behavioral questions
Describe a complex fintech problem you solved.,How do you handle production issues under pressure?,Share an example of improving system reliability.,How do you collaborate with non-technical teams?
Frequently asked questions
- What is the primary focus for a Software Engineer at Mews Fintech?
- As a Software Engineer at Mews Fintech, your primary focus will be on building and maintaining backend services and APIs that power the company's payment and financial products for hotels worldwide. This includes working end-to-end on features from design to deployment and ensuring the systems are secure, scalable, and reliable.
- What are the core technologies used by the Mews Fintech team?
- The core technologies for this role are C# and .NET Core on Azure for backend development. There is also some frontend work with React and TypeScript. Familiarity with messaging systems like Kafka, RabbitMQ, or Azure Service Bus is a plus.
- What kind of experience is Mews looking for in a Software Engineer candidate?
- Mews is seeking candidates with strong, recent experience in C# and .NET Core, preferably with a background in fintech, payments, banking, or other regulated environments. Experience with large-scale systems where correctness and reliability are critical, and a comfort across the full engineering lifecycle, are highly valued.
- How does Mews foster a positive work environment for Software Engineers?
- Mews values open communication, trust, and continuous learning. Teams follow Agile practices, focusing on flow, delivery, and collaboration. You'll work in a small, cross-functional team that ships together, encouraging a collaborative and growth-oriented atmosphere.
- What are the opportunities for career growth for a Software Engineer at Mews?
- The role offers progressive ownership over product areas, allowing engineers to reduce dependencies and accelerate team progress. The focus on a complex, regulated financial platform provides ample opportunity to deepen expertise in fintech and backend development, and to contribute to shaping the product.
- Is this role suitable for someone with a strong backend focus but limited frontend experience?
- Yes, the role is backend-heavy with .NET on Azure. While React/TypeScript experience is a 'nice to have' for occasional frontend work, your primary contributions will be on the backend. Strong C# and .NET Core skills are the priority.
- How does Mews approach code quality and deployment?
- Mews emphasizes code reviews to maintain high standards of quality and reliability. They also utilize CI/CD pipelines for deployments and focus on observability to ensure systems are running smoothly in production. This indicates a commitment to robust engineering practices.