Backend Developer Senior Specialist

The Backend Specialist is a skilled software engineer with deep expertise in .NET Core development, system integration, and API design. This role is critical to building and maintaining robust backend services that power digital platforms across the organization. The candidate will be responsible for the design, implementation, and optimization of APIs, microservices, and database-driven features, as well as integration with internal and external systems. This position requires strong technical judgment, experience in deploying applications to Linux and Windows environments, and a collaborative mindset to work with cross-functional teams in a high-availability, security-focused environment.

Key Responsibilities

• Design and implement high-performance, secure RESTful APIs using C# .NET Core.
• Apply modern design patterns (e.g., dependency injection, repository pattern) to ensure scalable and maintainable backend services.
• Build microservices and reusable components in support of business and platform needs.
• Integrate backend systems with internal services, third-party platforms, and external APIs.
• Implement and manage enterprise application integrations using API gateways, service buses, or messaging systems.
• Ensure secure authentication and authorization flows (OAuth2, JWT, SAML).
• Develop and maintain relational databases (mainly, Oracle), including complex queries, stored procedures, indexing, and optimization.
• Ensure proper data modeling, access layer design, and transaction management.
• Develop and maintain unit tests, integration tests, and automated validation pipelines.
• Monitor, debug, and optimize backend services for performance, reliability, and security.
• Work closely with frontend developers, QA, product managers, and business stakeholders.
• Translate business needs into technical specifications and robust backend architectures.
• Produce clear technical documentation for APIs, services, and data flows

Requirements

• Bachelor’s degree in computer science, Software Engineering, or a related discipline.
• 5–7 years of hands-on experience in backend software development
• Strong command of .NET Core, API development, and object-oriented programming.
• Proven experience with relational databases and data-driven applications.
• Hands-on experience deploying and managing applications on Linux and Windows servers.
• Professions in software principles, such as STRONG, DRY and others.

Preferred Skills

• In addition to professions in .NET core, it will be beneficial knowledge and experience in old technologies in order to participate in supporting and migrating old technologies, such as SOAP, web forms, and MVC.
• Familiarity with enterprise level architectures.
• Exposure to fintech or regulated industry standards including data protection and audit compliance.
• Strong debugging, optimization, and performance-tuning skills.
• Ability to handle complex integration projects independently and mentor junior developers when needed.
• Work Conditions

Work Conditions

• Hybrid or in-office as per company policy.
• May require occasional after-hours support for critical deployments or incidents.
• Paced environment with opportunities to contribute to platform architecture and technical decision-making.