Senior Backend Developer

Paracon; Sandton; On-site; ZAR 900,000 - 1,400,000; Full time

Job summary

Paracon is seeking a Senior Backend Developer to design and build the backend foundation for enterprise-scale platforms. You will own API design, data models, and integrations while partnering with DevOps, QA, and product teams to deliver robust solutions.

The role emphasizes scalable, secure, and high-performing systems, with emphasis on mentoring teams and shaping the backend architecture within complex environments.

Qualifications

• 8+ years of experience in C# backend development.
• 3+ years of experience with Microsoft SQL Server.
• Proven experience designing enterprise-scale backend systems.
• Strong experience with API integrations and transactional processing environments.

Responsibilities

• Design and implement a business rules engine and workflow integrations.
• Develop backend functionality for administration of rules, audit trails, and approvals.
• Design API integration frameworks and abstraction layers for document processing.
• Build and maintain integrations with external systems and providers.
• Lead backend architectural decisions and mentor teams on integration patterns and security.

Skills

C#

ASP.NET Core

LINQ

Async/Await

RESTful API design

CI/CD

Git

Security best practices

Education

Bachelor's Degree or Diploma in Computer Science / IT

Tools

AWS

SQL Server

NoSQL databases

Swagger/OpenAPI

Job description

Are you a seasoned Backend Developer with a passion for building scalable, secure, and high-performing enterprise solutions? Our Company is looking for a Senior Backend Developer to play a key role in designing and developing the backend foundation of a critical platform. This opportunity is ideal for an experienced professional who thrives in complex environments and enjoys solving challenging technical problems while collaborating across development, operations, and support teams.

Role Purpose

As a Senior Backend Developer, you will be responsible for designing and building the backend platform foundation, including business rules engines, system integrations, API architecture, and core data models. You will ensure transactional consistency, data integrity, security, and scalability while partnering closely with DevOps and QA teams to deliver robust solutions.

This role requires someone who can confidently navigate complex enterprise environments, quickly understand intricate business processes, and take ownership of backend architecture and delivery.

Key Responsibilities

• Design and implement a business rules engine, including rule evaluation, versioning, and configuration management.
• Develop backend functionality for administration of business rules, audit trails, and approval workflows.
• Design and implement API integration frameworks and abstraction layers for document processing services.
• Build and maintain integrations with multiple external systems and service providers.
• Design scalable and efficient data models supporting various functional instruction types.
• Develop instruction payload generation and routing mechanisms for downstream systems.
• Implement region-specific routing logic and processing workflows.
• Design and maintain immutable audit trails and event logging systems.
• Ensure transactional consistency and data integrity across complex workflows.
• Lead backend architectural decisions and contribute to solution design discussions.
• Mentor development teams on integration patterns, software architecture, and security best practices.
• Collaborate closely with DevOps, QA, and business stakeholders throughout the development lifecycle.

Experience

• 8+ years of experience in C# backend development.
• 3+ years of experience working with Microsoft SQL Server.
• Proven experience designing and implementing enterprise-scale backend systems.
• Strong experience with API integrations and transactional processing environments.

Technical Skills

• Expert knowledge of C#, ASP.NET Core, LINQ, Dependency Injection, and Async/Await.
• Advanced SQL Server expertise including schema design, indexing, performance tuning, and transaction management.
• Experience with NoSQL databases or document stores.
• Strong RESTful API design and development experience.
• Deep understanding of integration patterns, including retry mechanisms, circuit breakers, and timeout handling.
• Experience implementing ACID-compliant transaction processing systems.
• Strong knowledge of audit trail and event logging architectures.
• Experience with AWS RDS and cloud-based database services.
• Solid understanding of security best practices, including encryption, secrets management, and input validation.
• Experience working with Git and CI/CD pipelines.
• Proficiency in API documentation tools such as Swagger/OpenAPI.

Key Deliverables

• Business Rules Engine with administration capabilities.
• Document Processing Integration Abstraction Layer.
• Data Models supporting multiple instruction types.
• Region-specific Routing Logic.
• Immutable Audit Trail and Event Logging Framework.
• Integrations with external platforms and systems.
• API Documentation and Integration Guides.
• Database Schema Documentation and Migration Scripts.

Qualifications

• Bachelor's Degree or Diploma in Computer Science, Information Technology, Software Engineering, or a related field.
• Relevant Software Engineering or Cloud Certifications are advantageous.
• AWS Certifications will be highly beneficial.

Competencies

• Strong analytical and problem-solving abilities.
• Excellent debugging and root-cause analysis skills.
• Ability to work effectively within complex enterprise environments.
• Strong stakeholder engagement and communication skills.
• Ability to quickly understand custom frameworks and business processes.
• Comfortable balancing support, maintenance, and new development responsibilities.
• Strong sense of ownership, accountability, and delivery focus.
• Collaborative team player with mentoring capabilities.