Senior C# Backend Developer

About Hytech

Hytech is a leading management consulting firm headquartered in Australia and Singapore, specialising in digital transformation for fintech and financial services organisations. We deliver end-to-end consulting services and provide robust middle- and back-office solutions that enable our clients to optimise operations, enhance efficiency, and stay ahead in a fast-evolving digital landscape.

With more than 2,000 professionals worldwide, Hytech has a strong and growing international presence, with offices across Australia, Singapore, Malaysia, Taiwan, the Philippines, Thailand, Morocco, Cyprus, Dubai, and beyond.

About Role

Key Responsibilities

• Drive backend development and iteration for high-throughput systems, independently owning the design, development, and deployment of core modules including transaction processing and real-time data feeds.
• Build high-concurrency services using .NET 6/8, leveraging multi-threading, asynchronous programming, and locking mechanisms to ensure stable, low-latency performance in demanding production environments.
• Design and implement system solutions for order-processing or workflow-orchestration platforms, from architecture to deployment, with ongoing performance tuning to eliminate bottlenecks.
• Participate in architectural design and solution reviews, troubleshoot complex production incidents, and continuously enhance system high availability.
• Write clean, maintainable code, participate in code reviews, produce technical documentation, and collaborate with cross-functional teams to deliver integration milestones.
• Stay ahead of emerging technologies, support project delivery, and develop third-party integrations, plugins, or API interfaces as needed.

Requirements

• Bachelor's degree or higher in Computer Science or a related field, with 5+ years of C# backend development experience and proven ability to lead core module development independently.
• Deep expertise in C# multi-threading, asynchronous programming, and concurrency control, with a track record of resolving real-world high-concurrency challenges.
• Prior experience building latency-sensitive or high-throughput systems; experience with real-time data processing or workflow engines is highly preferred.
• Proficient in .NET 6/8 and ASP.NET Core, with a solid understanding of garbage collection (GC), dependency injection (DI), middleware, and other low-level framework features.
• Strong working knowledge of Redis, Kafka, and MongoDB; expertise in MySQL database design and SQL query optimization.
• Demonstrated capability in architectural design and production troubleshooting, with a disciplined approach to coding standards.
• Excellent communication and teamwork skills, ability to perform under pressure, and a proactive attitude toward learning new technologies.

Preferred Qualifications

• Hands-on experience with third-party system integration, plugin development, or platform administration.
• Background in building large-scale, mission-critical backend systems (e.g., logistics, IoT, or fintech, financial market).
• Active open-source contributions or a technical blog showcasing expertise.

What We Offer

• Easy access to public transportation (LRT & KTM).
• Transportation allowance.
• Corporate insurance coverage, including dental, optical, and outpatient claims.
• Gym and fitness claims.
• Ongoing training and development opportunities.
• Exposure to exciting projects that support career growth and professional development.