Senior .NET Full Stack Developer – C#

Position Description:

CGI is a global IT and business consulting services firm with a strong international presence, helping clients achieve meaningful business outcomes through technology and innovation. Our collaborative culture empowers professionals to work alongside industry experts, solve complex challenges, and deliver solutions that make a difference.

We are seeking an experienced Senior .NET Full Stack Developer to join our Payment Integrity team in Bogotá, Colombia. In this hands-on engineering role, you will design, develop, and maintain secure, scalable enterprise healthcare applications using C#, .NET, ASP.NET Core, Angular, TypeScript, and SQL Server. You will contribute to technical architecture, application modernization, and engineering best practices while collaborating with global delivery teams.

The ideal candidate combines strong full stack development expertise with technical leadership, problem-solving capabilities, and a commitment to software quality. You will also support CGI's AI-first delivery approach by leveraging AI-assisted development tools to improve engineering productivity, testing, and documentation.

Location: Bogotá, Colombia

Work arrangement: On-site at CGI's Bogotá office

How you'll make an impact

Design, develop, enhance, and maintain enterprise applications using C#, .NET, ASP.NET Core, Angular, TypeScript, and SQL Server
Build responsive, secure frontend applications and scalable RESTful APIs, backend services, and data integration components
Develop and optimize SQL Server databases, stored procedures, queries, and data access layers using Entity Framework Core or similar ORM technologies
Contribute to solution architecture, technical design, application modernization, and cloud integration initiatives while applying SOLID principles and secure coding standards
Lead technical code reviews, troubleshoot complex application issues, optimize performance, and mentor junior and mid-level developers
Develop and maintain unit, integration, API, and automated regression tests to ensure application quality, reliability, and maintainability
Leverage AI-assisted development tools such as GitHub Copilot and Gemini Code Assist to support coding, debugging, testing, refactoring, and documentation while validating AI-generated outputs
Collaborate with architects, business analysts, QA engineers, and distributed development teams to translate healthcare Payment Integrity requirements into reliable technical solutions
Support Agile delivery activities, including sprint planning, estimation, backlog refinement, technical documentation, and coordination with onshore and offshore teams
Implement and promote engineering best practices for application security, observability, logging, monitoring, scalability, and continuous improvement

What you'll bring

Minimum of 5 years of professional software development experience with strong hands-on expertise in C#, .NET, ASP.NET Core, Web API, and object-oriented programming
Strong experience developing modern web applications using Angular, TypeScript, JavaScript, HTML, and CSS
Advanced knowledge of Microsoft SQL Server, relational database design, SQL optimization, stored procedures, and Entity Framework Core or comparable ORM technologies
Proven experience designing, developing, and integrating RESTful APIs, backend services, and enterprise application components
Strong understanding of software architecture, design patterns, SOLID principles, secure coding practices, and application performance optimization
Experience with Git, source control workflows, automated testing, debugging, and application troubleshooting
Experience working in Agile/Scrum development environments and collaborating with geographically distributed engineering teams
Demonstrated ability to contribute to technical design decisions, conduct code reviews, and provide technical guidance to other developers
Strong analytical, problem-solving, communication, and collaboration skills with the ability to work effectively with technical and business stakeholders
Ability to work on-site at CGI's Bogotá, Colombia office

Desired qualifications / Strongly Preferred

Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field
Experience with .NET 6, .NET 8 or later, and cloud platforms such as Microsoft Azure, AWS, or Google Cloud
Experience with Docker, Kubernetes, CI/CD pipelines, Azure DevOps, GitHub Actions, or comparable DevOps technologies
Familiarity with microservices, event-driven architecture, distributed systems, and application modernization initiatives
Experience in healthcare, health insurance, claims processing, Payment Integrity, or financial systems, including familiarity with HIPAA and applicable healthcare data security requirements
Experience using AI-assisted development tools such as GitHub Copilot, Gemini Code Assist, or similar technologies to improve software engineering productivity

At CGI, we believe our people’s growth is essential to our success. That’s why we offer eligible CGI Partners in Colombia a comprehensive benefits package designed to support their well-being, financial security, and professional development:

Competitive salary and access to our Share Purchase Plan.
Health and protection benefits, including prepaid healthcare coverage, life and funeral insurance, and employee assistance programs.
Financial and lifestyle benefits through our employee fund.
Continuous learning through a wide range of learning resources, technical certifications, coaching, and language training.
Opportunities to grow through professional development and internal mobility across CGI’s global organization.
Work flexibility, with flexible or hybrid arrangements where applicable.
Opportunities to participate in community initiatives and social responsibility programs.

Join CGI Colombia, a Great Place to Work™ certified organization. Here, you can grow your career, collaborate with talented professionals, and help deliver innovative technology solutions with meaningful impact.
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Skills:

• .NET
• Angular
• C#
• GitHub Copilot
• Google Gemini Code Assist
• Microsoft SQL Server

What you can expect from us:

Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

Come join our team—one of the largest IT and business consulting services firms in the world.