Senior Back-End Developer, Fintech

Job not on LinkedIn

November 18

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Fin-X

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We want to make healthcare more efficient and affordable.

11 - 50 employees

Founded 2018

📋 Description

• Investigate and address root causes in critical modules, ensuring stability and reducing recurrence of incidents in sensitive financial systems • Plan and meet technical deadlines for each project (releases, maintenance windows, rollbacks and versioning) • Prepare environments and configure integrations and parameters for financial products (payment gateways, registrars, banks, bureaus and partner APIs) • Develop and evolve high-performance services with a focus on security, scalability and resilience — including refactoring legacy .NET/C# code • Implement integrations using REST, messaging and webhooks in complex financial flows (transactions, settlements, reconciliations, billing and payment splits) • Participate in agile rituals, remove impediments and ensure SLAs and quality of deliveries • Act as a technical reference, supporting the team and promoting software engineering and security best practices.

🎯 Requirements

• Education: Degree in IT/Computer Science or related fields (postgraduate degree is a plus) • Experience: 5+ years in Back-End .NET (C#), working with critical systems and legacy code; proven experience mentoring technically • Experience in fintechs or the financial sector (advantage) • Stack/Practices: ASP.NET Core, services/background workers, legacy refactoring • SQL Server (query tuning, indexes, execution plans) • Integrations via REST, messaging (Azure Service Bus / RabbitMQ) and OAuth2/OpenID • Architecture: DDD, Clean Architecture, modularization, design patterns • Testing: xUnit/nUnit, integration and regression testing.

🏖️ Benefits

• Competitive compensation • 100% remote work • Structured growth plan — annual reviews and promotions based on your development • Quarterly Talent Review — roles and deliverables are revisited to closely track each professional's development and career growth • Access to Fiibo — exclusive everyday benefits • Welhub — a well-being platform for your physical and mental health.