Senior .NET Developer: Modernize Apps & Data (Hybrid)

American Express Global Business Travel (GBT); Manila; Hybrid; PHP 900,000 - 1,500,000; Full time

Benefits offered by this job

Flexible benefits

Travel perks

Learning & development

Job summary

Amex GBT in Manila, Philippines, seeks a senior application developer to design and build software using .NET and C#. You will modernize our in-house portfolio and support data ingestion and integration projects.

The role is hybrid with at least three days per week in the local office. You will contribute to design reviews, code quality, and collaboration with cross-functional teams, while advancing security and performance across our tech stack.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field, OR equivalent professional experience
• 3+ years of professional experience building applications using C# and .NET framework
• 3+ years of professional experience with SQL Server database design, development, and optimization
• Strong understanding of object-oriented programming (OOP) principles and design patterns
• Experience with web application development using ASP.NET or ASP.NET Core
• Familiarity with Azure or other cloud-based technologies
• Understanding of SDLC methodologies and best practices
• Experience with version control systems (e.g., Git)
• Strong problem-solving and analytical skills
• Excellent written and verbal communication skills
• Ability to work independently and collaboratively with team members
• Proficiency with Microsoft Office Suite (Word, Excel, Outlook)
• Flexibility to work at least half of a scheduled shift to coincide with US business hours (Central time zone)

Responsibilities

• Design, develop, and maintain software and web applications using .NET framework and C#
• Write clean, well-documented code adhering to established standards and best practices
• Contribute to maintenance, bug fixes, and enhancements of in-house software products
• Participate in modernizing legacy applications to contemporary Microsoft technologies
• Participate in design reviews and code reviews, providing technical input and constructive feedback
• Collaborate with team members and stakeholders to understand functional requirements and plan solutions
• Translate business requirements into technical designs and implementation strategies
• Estimate work resources accurately and communicate timelines and dependencies
• Design and develop SQL Server databases, queries, and stored procedures
• Optimize database performance and ensure data integrity
• Collaborate on data modeling and schema design
• Support, maintain and enhance automated data ingestion processes
• Work with structured data formats (CSV, JSON, XML) and external file-based data feeds (FTP/SFTP)
• Implement data validation, transformation, and error-handling logic
• Troubleshoot production data issues and perform root cause analysis
• Document data integration processes and maintain technical documentation
• Analyze and identify functional and business shortcomings in existing software
• Communicate technical issues, solutions, and recommendations to team members and stakeholders
• Collaborate with cross-functional teams to identify solutions aligned with company needs
• Escalate technical challenges to your Development Manager when needed
• Stay current with latest technologies, frameworks, and security best practices
• Monitor security vulnerabilities and industry updates relevant to our technology stack
• Identify opportunities to enhance application security, performance, and maintainability
• Leverage AI-assisted development tools to enhance productivity
• Participate in team knowledge-sharing sessions

Skills

C#

.NET Framework

ASP.NET

SQL Server

Git

OOP

Azure

Web development

Communication

Education

Bachelor's degree in Computer Science or related field

Tools

SQL Server

Azure

Git

Job description

Amex GBT in Manila, Philippines, seeks a senior application developer to design and build software using .NET and C#. You will modernize our in-house portfolio and support data ingestion and integration projects.

The role is hybrid with at least three days per week in the local office. You will contribute to design reviews, code quality, and collaboration with cross-functional teams, while advancing security and performance across our tech stack.