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Senior Dotnet Developer

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Onsite

Senior Dotnet Developer

IT Ridge Technologies

Senior Dotnet Developer

Skills

SQL QueriesC#.NETMicroservicesKafkaRedisRabbitMQElasticsearchAzure

6 days ago

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Important information


Contract type:

Permanent

Location:

City of Johannesburg Metropolitan Municipality, South Africa

Work mode:

Onsite

Published on:

15 October 2026

What they need


Job Spec

  • Expert‑level proficiency in .NET 8+ and C# 12+ (async/await, LINQ, performance tuning, reflection).
  • Strong experience with Dapper / EF Core , including ORM trade‑offs and performance tuning.
  • Advanced SQL Server skills: query tuning, indexing, execution plans, statistics.
  • Deep understanding of ACID, isolation levels, deadlocks, sharding, and partitioning. (Beneficial)
  • Redis expertise in distributed caching and invalidation strategies. (Beneficial)
  • Elasticsearch experience (indexing, search and aggregation performance optimizations). (Beneficial)
  • Microservices design: boundaries, communication patterns, service reliability.
  • Event‑driven architecture: RabbitMQ, Kafka, or Azure Service Bus.
  • API design (REST / gRPC), backward compatibility, and versioning strategies.
  • Strong ability to lead design discussions and influence architecture without formal authority.

DevOps, CI/CD & Observability:

  • Advanced Azure DevOps pipeline design and release management.
  • Understanding of modern deployment strategies (blue‑green, canary, etc.).
  • Experience with logging, tracing, and performance monitoring (OpenTelemetry). (Beneficial)

Software Quality & Craftsmanship:

  • Deep experience with testing automation across all testing layers.
  • Strong understanding of SOLID principles, design patterns, and refactoring practices.
  • Performance profiling, optimization, and debugging complex scenarios.

Production Ownership:

  • Experience leading incident response, post‑mortems, and operational improvement efforts.
  • Ability to maintain composure and lead through high‑severity production challenges.

Soft Skills & Professional Strengths:

  • Excellent technical communication and ability to explain complex concepts to diverse audiences.
  • Strong ownership mindset — you take responsibility for outcomes, not just tasks.
  • Adaptability in a fast‑moving environment with changing priorities.
  • Collaborative and team‑oriented, with strong cross‑functional communication.
  • High attention to detail, especially in regulated environments.
  • Proactive, solution‑driven, and resilient under pressure.

Core Development & Architecture:

· Build and enhance scalable systems within a distributed microservices architecture.

· Design and implement RESTful APIs with strong versioning and documentation standards.

· Develop event driven services using message queue technologies to support high volume, asynchronous workloads.

· Design and optimize databases, queries, and indexing for ultra high throughput environments.

· Implement advanced caching patterns (Redis, distributed caching) to reduce latency and boost performance.

Code Quality & Technical Leadership:

  • Drive code quality through rigorous reviews, adherence to SOLID principles, and best practice engineering standards.

  • Mentor junior and mid-level developers and support their growth.

  • Lead adoption of testing practices (unit, integration, contract, load testing).

  • Identify opportunities for system refactoring, modernization, and performance improvement.

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