Senior Backend developer (C# )

Job Description

We are seeking a Senior Backend Engineer to design, develop, and optimize backend microservices in a large-scale, cloud-based environment. Leveraging Domain-Driven Design (DDD), you will define bounded contexts aligned with business domains, ensuring scalable, resilient, and maintainable architectures. You'll work closely with cross-functional teams, including architects, project managers, analysts, frontend developers, and ICT support teams to deliver high-quality solutions aligned with both business and technical goals.

Key Responsibilities:

• Architecture & Development:

  • Lead the design and implementation of scalable, high-performance microservices using DDD.

  • Decompose monolith applications into modular, independently deployable services.

  • Design and document secure REST and WebSocket-based APIs.

  • Implement token-based authentication (e.g., JWT, OAuth2) to secure backend systems.

  • Optimize applications for performance, scalability, and cost-effective deployment in cloud platforms (Azure, AWS).

• Collaboration & Leadership:

  • Collaborate with the Architecture Team, Business Capability Sector, and Application Support to align solutions with enterprise standards.

  • Work closely with frontend engineers to ensure seamless API integration and aligned response structures.

  • Mentor junior developers and lead Agile ceremonies, promoting DevOps best practices and continuous improvement.

• Analysis & Documentation:

  • Translate business requirements into technical designs in collaboration with architects and analysts.

  • Prepare and maintain HLA, HLD, and LLD documentation or equivalent Agile artifacts (e.g., user stories).

  • Document microservice designs, including functionality, dependencies, API specs, and deployment guides.

• Quality Assurance & Performance:

  • Conduct code reviews to enforce standards, improve quality, and provide feedback.

  • Analyze backend services to identify and eliminate bottlenecks through refactoring and optimization.

  • Implement performance testing, load balancing, and caching strategies to ensure robust performance.

• Strategic Contributions:

  • Define microservice boundaries using DDD.

  • Contribute to backend architecture evolution and continuous documentation practices.

  • Identify and mitigate risks related to integration, scalability, performance, and security.

Key Performance Indicators:

• Speed & Responsiveness: Ability to rapidly adapt to changing requirements and deliver updates swiftly.
• Timeliness: Meet agreed timelines and delivery milestones.
• Code Quality: Maintain high standards in software development, documentation, and testing.
• Efficiency: Optimal use of resources to deliver effective solutions.
• Standards Compliance: Adherence to internal and industry best practices.
• Team Leadership: Facilitate Agile development practices and foster team learning and cohesion.

Qualifications

• Bachelor's degree in Software Engineering
• Minimum English language skills at the Level B2
• Minimum 5 years of experience, including the responsibility to design and build complex microservices for a large organization.
• Deep knowledge of building microservices and understanding of architectural patterns such as orchestration and choreography (SAGA) using the Domain Driven Design approach.
• Develop, implement, and maintain scalable and loosely coupled microservices.
• Build and deploy high-quality APIs (REST / WebSockets based) to connect services and support external integrations.
• Expertise with containerization (Docker) and orchestration (Kubernetes).
• Strong programming skills in C#.
• Practical knowledge of the Red Hat OpenShift platform (RHOS).
• Knowledge of Git Workflows.
• Ability to create automated, unit and integration tests.
• Establish and maintain CI/CD pipelines for microservices deployment.
• Implement monitoring, logging, and distributed tracing tools (e.g., Prometheus, Grafana, ELK, Jaeger) with a Service Mesh communication layer.
• Ensure system security through token-based authentication (JWT, OAuth2) and other measures.
• Deep knowledge of design patterns like Service Discovery, Circuit Breaker, and API Gateway (preferred KONG).
• Proficiency with cloud platforms (Azure, AWS) and associated tools.
• Hands-on experience with asynchronous messaging systems (Kafka based).
• Familiarity with distributed databases and data management strategies (SQL/ NoSQL).
• Proficient in implementing event-driven architecture (EDA) based on Kafka.
• Write clean, efficient, and maintainable code
• Practical knowledge of working in a CI / CD environment based on Azure DevOps.
• Experience in building observability for microservices.
• Knowledge of UML notation.
• Works independently and guide junior staff
• Writes specifications, concept documents, end-user and technical documentation; communicates effectively with stakeholders on technical and user requirements topics
• Well-developed interpersonal skills
• Ability to work in a team, demonstrating strong communication skills and a willingness to share knowledge.
• Previous experience working in an Agile team (SCRUM).
• SOLID understanding of best practices, processes and patterns in software development.
• Designing and implementing solutions based on microservices architecture.
• Creating technical documentation and conducting code reviews.
• Working with frontend and backend teams to deliver consistent solutions.
• Optimizing applications for performance and scalability.

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