Open role

Back-End Developer

We are seeking an experienced Backend Developer to design and deliver secure, high-performance, and scalable backend systems and APIs. This role involves optimizing data architectures, ensuring system reliability and security, and integrating enterprise platforms.

Role details

Drive Innovation That Makes A Difference

You will play a key role in driving backend innovation and collaborating with cross-functional teams to deliver robust, production-ready solutions.

Primary Responsibilities

Design, develop, and maintain server-side applications and APIs.

Write clean, efficient, and maintainable code following best practices and coding standards.

Design, optimize, and maintain relational data models, writing stored procedures, views, and indexes for peak performance.

Ensure API security, authentication, and authorization.

Enforce secure-coding best practices robust audit-trail logging for all critical operations.

Improve the performance, scalability, and security of backend systems.

Integrate with third-party platforms, directory services, and message buses

Ensure high availability and resilience: implement logging, metrics/monitoring and exception handling

Collaborate with frontend developers to integrate APIs and backend services.

Write comprehensive unit/integration tests and participate in code reviews, pair programming, and knowledge-sharing sessions to improve team performance.

Troubleshoot and resolve bugs, performance bottlenecks, and system failures.

Conduct and assist in performance and vulnerability assessment and testing.

Qualifications

Bachelor’s degree in computer science, Information Technology, or related field (or equivalent experience).

2-3 years professional back-end development experience in C#/.NET Core (6+), delivering production-grade APIs

2-3 years of experience with PostgreSQL and working knowledge of MongoDB

2-3 years of experience in asynchronous programming, LINQ, and Entity Framework.

Strong SQL skills: schema design, T-SQL, performance tuning, and transaction management

Strong understanding of RESTful API development and security best practices.

Familiarity with file storage and processing

Experience with real-time features and background jobs

Knowledge of unit testing frameworks (e.g., xUnit, NUnit) and mocking tools

Experience with authentication/authorization systems, including JWT and role-based access control.

Comfortable with version control workflows and agile best practices

Careers

Join Our Team

We’re always looking for talented professionals who do excellent work and take ownership of their results. If that sounds like you, we’d like to hear from you.

Cosmotech Center, 7761 Saint Paul St., San Antonio Village, Makati City
(02) 8403-9811 to 12
sales@cosmotech.com.ph

Application Form

All submissions are kept confidential.

NPC Registered

Cosmotech Philippines, Inc. is registered with the National Privacy Commission for its Data Protection Officer (DPO) and Data Processing Systems (DPS) in compliance with the Data Privacy Act of 2012.