Sr. Fullstack Developer

Muntinlupa, Philippines (Hybrid)




About GECO

GECO Asia is an IT Consulting and Resourcing company with operations in Singapore, Malaysia, and the Philippines. We specialize in providing IT Professionals on a project or permanent basis and take pride in delivering top-quality technology talent to our global clients. With strong expertise across emerging technologies and enterprise IT solutions, GECO is committed to developing people, nurturing careers, and creating growth opportunities for our consultants.

We believe that our people are our greatest asset, and we continuously invest in their professional development by providing access to cutting-edge projects, training, and certifications. Joining GECO means becoming part of a collaborative, growth-oriented, and innovation-driven culture where your skills are valued, and your career goals are supported.


Position: Senior .NET Developer

Duties and Responsibilities


• Design, build, and maintain efficient, reusable, and reliable .Net code

• Develop, implement, and optimize SQL queries

• Participate in agile activities including estimation, standups, grooming, sprint planning and retrospectives

• Update user stories and tasks in JIRA to reflect the status of sprint

• Check work for defects prior to releasing to QA

• Submit pull requests, handle code merges, and facilitate software releases

• Troubleshoot and own defects identified by the QA team and customers

• Nurture a culture of team excellence with openness, transparency, close collaboration, and a willingness to learn

• Proactively provide updates to the customer on the progress of the initiative

• Maintain and update daily monitoring of service deliverables

• Prepare and submit needed reports

• Ensure continuity of providing service by flexibly adjusting to help other team members

• Expand knowledge on business process and IT related information

• Stay abreast of current technology, systems information, problems, changes, and updates relevant to the team

• Extend help or conduct training to Analyst/Programmers by sharing technical expertise or know-how with other team members

• Perform other tasks as may be assigned


Core Qualifications and Education

• 5+ years of professional experience with Microsoft .NET (Core/Framework), building scalable and maintainable applications

• 4+ years of SQL Server with expertise in writing complex queries, stored procedures, and performance tuning

• Strong front-end experience with HTML, CSS, JavaScript (ES6+), and React.js (2+ years), including modern state management and component-based design

• 1+ year of experience with TypeScript for building strongly typed and maintainable React applications

• 2+ years using Git for version control, branching strategies, and collaborative development

• Hands-on Agile experience (1+ year), working with cross-functional teams in sprint-based delivery

• Solid understanding of software development best practices: testing strategies (unit/integration), version control, code review, and clean code principles

• Strong knowledge of web fundamentals (HTTP, REST APIs, response codes, and API integration)

• Deep understanding of .NET best practices, including SOLID principles, dependency injection, and unit testing frameworks

• Excellent English communication skills – able to collaborate effectively, explain complex technical details clearly, and produce well-structured documentation

• Adaptable and growth-oriented, eager to learn and apply new tools, patterns, and emerging technologies

• Keeps up-to-date with industry trends and modern software development practices

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