Senior .NET Engineer

Komodo Consulting is a technology and strategy firm specializing in Digital Transformation. Operating in Portugal and Poland, we provide IT Consulting & Nearshore services. We support both public and private sector organizations through two main areas:

- Consulting - with a focus on strategy, investment analysis, and digital process improvement;

- IT Team Augmentation - helping clients scale and strengthen their tech teams.

The Project

We are seeking a Senior .NET Engineer to work on a Tech project.

You will have the following responsibilities:

• Design and implement high-performance microservices using .NET 8, with a focus on scalability and clean architecture;

• Build and refine asynchronous, event-driven workflows using AWS SNS/SQS, ensuring data consistency and system resilience;

• Lead the technical integration of Large Language Models (LLMs) into core applications, bridging .NET backends with Python-based AI logic;

• Collaborate on the design and development of high-throughput data pipelines using AWS Data Firehose and Data Streams for real-time processing;

• Uphold high code quality standards through unit and integration testing using xUnit and WireMock;

• Work closely with SRE teams to deploy services via GitHub Actions and manage cloud infrastructure through Terraform;

• Leverage AI-assisted tooling such as GitHub Copilot and ChatGPT to accelerate delivery while maintaining rigorous oversight of code security and efficiency.

You need to have the following skills/experience:

• Deep expertise in C# and .NET Core / .NET 8, including strong knowledge of the framework's internals;

• Hands-on experience building cloud-native applications leveraging AWS services, including SNS, SQS, S3, and ECS;

• Strong understanding of Event-Driven Architecture and distributed systems patterns such as Pub/Sub, Competing Consumers, and Idempotency;

• Proven experience with Redis or Valkey for caching, state management, and performance optimization;

• Experience or demonstrable interest in working with LLMs and Python, including RAG systems or OpenAI/Anthropic API integrations;

• A test-first mindset with solid experience in unit and integration testing practices;

• Familiarity with DevOps tooling including Docker, GitHub Actions, and Terraform;

• English proficiency at B2 level or above, with confidence communicating and collaborating in a fully English-speaking work environment.

Location

Lisbon, Porto, Braga, or Coimbra (Hybrid - 2 days per week at the office).