Language Requirement - Fluent in English

Work Hours - 9:00 to 18:00 Philippines Time

Interview Process:

• Virtual Technical Assessment
• Video Call Interview with Company Director
• Video Call Interview with Technical Project Leader
• Job Offer

Timeline of Interview Process Completion - 1-2 weeks, Please expect a Linkedin Inmail for next steps

Lead .NET Backend Developer to drive the backend development of our high-performance online bills payment platform. This role requires deep expertise in event-driven microservices architecture, high-concurrency handling, and asynchronous processing to ensure seamless and secure financial transactions at scale. As a lead developer, you will work closely with cross-functional teams to design, optimize, and scale a system that processes high volumes of real-time transactions while maintaining reliability and performance. This is an opportunity to take ownership of a mission-critical backend system that directly impacts thousands of users daily.

Key Responsibilities

• Architect, develop, and optimize high-performance .NET microservices for an event-driven system.
• Ensure scalability, resilience, and fault tolerance in a high-throughput environment.
• Implement asynchronous programming, concurrency control, and efficient data handling to maintain system integrity under heavy load.
• Design and manage Kafka (or similar event-driven messaging systems) for real-time data processing.
• Utilize best practices in dependency injection, unit testing, and SOLID principles to create maintainable code.
• Lead and mentor backend engineers, fostering a culture of technical excellence.
• Collaborate with DevOps teams for containerization (Docker, Kubernetes) and cloud-based deployments (AWS/Azure).
• Optimize database interactions using custom ORM solutions, caching strategies, and indexing.
• Troubleshoot performance bottlenecks and improve system observability with distributed tracing and monitoring tools.

What We’re Looking For

• 8+ years of experience in .NET backend development (C#, ASP.NET Core, Web API).
• Expertise in event-driven microservices architecture using Kafka, RabbitMQ, or similar technologies.
• Deep understanding of multi-threading, parallelism, and concurrency control in distributed systems.
• Strong experience with Task Parallel Library (TPL), async/await, and thread synchronization techniques.
• Proficiency in SQL Server, PostgreSQL, or NoSQL databases, with knowledge of indexing and query optimization.
• Experience with dependency injection (DI), SOLID principles, and unit testing frameworks.
• Familiarity with containerization (Docker, Kubernetes) and cloud services (AWS, Azure).
• Strong understanding of secure coding practices, API security, and authentication mechanisms.
• Ability to mentor junior developers and conduct technical design reviews.

Nice-to-Have

• Experience with gRPC, SignalR, or WebSockets for real-time communication.
• Familiarity with Domain-Driven Design (DDD) and CQRS patterns.
• Knowledge of CI/CD pipelines, Terraform, and Infrastructure as Code (IaC).

What We Offer at Guerilla 360 Integrated Solutions:

• Work with a Globally Award Winning team - G2 High Performer Company 2025, Monday.com Gold Partner, Monday.com Partner of the Year 2024, Top Glassdoor Company in Asia as rated by employees, The Financial Times High Growth Company in Asia Pacific 2025
• Competitive salary plus a performance-based bonus
• Work remotely from any location
• System where you can advance the release of your salary and withdraw it real time
• Comprehensive Mental Health & Wellness packages accessible from the comfort of your home - daily yoga classes, daily meditation sessions, daily breathwork classes, weekly martial arts, weekly zumba and dance, weekly high intensity exercise classes, and more!
• Fun Virtual Events to meet your global teammates - Game Nights, AI Competitions, Clubs, Learning Exchanges, and more!
• Opportunities for professional growth and advancement within the company
• A collaborative, innovative, and supportive work environment
• Comprehensive training on our products and continuous learning opportunities
• Opportunities for certifications and licensures to boost your career

Please refer to job description.