C# Software Engineer

8x8; Hinoba-an; On-site; PHP 1,200,000 - 1,700,000; Full time

Job summary

8x8 in the Philippines is seeking a Senior Software Engineer to design and develop RESTful APIs and backend microservices, optimize performance, and ensure quality with unit tests. You will collaborate with product teams on requirements and work across cloud environments to deliver scalable solutions.

The role requires strong expertise in C# and .NET Core, experience with distributed systems, and a drive to ship reliable software.

Qualifications

• Written and verbal fluency in English is required.

Responsibilities

• Design and develop RESTful APIs and backend microservices.
• Optimize performance and ensure quality with unit tests.
• Participate in integration test design.
• Collaborate with product team on requirements.

Skills

RESTful APIs

C# .NET Core

Multi-threaded programming

Async programming

CI/CD practices

Tools

RabbitMQ

Kafka

SQL

NoSQL

Cloud platforms

Kubernetes

Helm

Istio

GitHub Copilot

Job description

Responsibilities

As a Senior Software Engineer, you will have the opportunity to expand our platform by designing and developing new RESTful APIs and backend microservices. You will also have the chance to optimize and improve the performance of the platform, ensuring the highest quality with unit tests, and participating in integration test design. Collaboration with the product team on requirements is also a key part of this role.

Experience

• 6+ years of professional software development experience.
• Expert knowledge of .NET Core and C#.
• Strong understanding of RESTful web services and microservices architecture.
• Proficiency in multi-threaded application development and async programming.
• Experience with queue engines like RabbitMQ or Kafka.
• Working experience with SQL and NoSQL databases.
• Experience with software engineering best practices (unit testing, integration testing, CI/CD).
• Hands-on experience utilizing cloud platforms to develop scalable and reliable applications, leveraging the power of cloud services for enhanced performance and flexibility.
• A team player who thrives in cross-functional environments, collaborating closely with product team, and stakeholders.
• Strong communicator who proactively drives alignment between engineering and business teams.

Bonus points

• Hands-on experience with highly loaded, mission-critical, scalable distributed systems in production, experience with cloud providers (AWS, Google Cloud, Microsoft Azure), or experience with Kubernetes, Helm, and Istio (or any other service mesh) in production.
• Exposure to the communications or messaging domains is also an advantage.
• Experience leveraging AI tools and frameworks (such as GitHub Copilot, Claude, or LLM APIs) to accelerate software delivery.
• Candidates who have designed or built AI agents - whether for workflow automation, developer productivity, or customer-facing features - are strongly preferred.

Qualification

Written and verbal fluency in English is required.

Join us today and be part of a dynamic team that is shaping the future of messaging platforms!

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