Senior ASP.net Backend Developer

Work Arrangement - Hybrid, 3 days a week in Makati, the remaining days are work from home

Work Hours - 9am - 6pm Philippine time (9:00 - 18:00 Philippine time)

Start Date - ASAP

Interview Stages:

• 1 Online Technical Test
• 2 Video Call Interviews with IT Director and Project Leader
• Job Offer

We are seeking a highly skilled Senior .NET Backend Developer to drive the backend development of our high-performance 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.

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 :

• Be Part of a Globally Award-Winning Team - G2 High Performer 2025, Monday.com Gold Partner, Partner of the Year 2024, Glassdoor Top Rated Company as voted by Employees, The Financial Times High Tech Growth Company in Asia Pacific
• 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
• Opportunities for professional growth and advancement within the company
• Extensive Mental Health and Wellness package from the comfort of your home - daily yoga, daily meditation, weekly martial arts class, weekly hi-intensity exercises classes, weekly zumba and dance classes
• Fun virtual activities to meet your international teammates - game nights, clubs, trivia competitions, AI contests
• 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