Mid/Senior Fullstack Developer (.NET/Javascript/Typescript), Colombia

Position Overview We are tech transformation specialists, uniting human expertise with AI to create scalable tech solutions. With over 7,400 CI&Ters around the world, we’ve built partnerships with more than 1,000 clients during our 30 years of history. Artificial Intelligence is our reality.

At CI&T, we are seeking a highly skilled and motivated Mid/Senior Fullstack Developer (.NET/Javascript/Typescript) to join our team in Colombia. You will contribute to an innovative project in a collaborative, innovative, transforming, and multicultural environment.

Responsibilities Design, build, and maintain robust applications using the Microsoft .NET stack (C#, ASP.NET)

Develop dynamic, modern front-end interfaces using JavaScript and associated frameworks/libraries

Write efficient, scalable SQL Server queries, functions, and stored procedures supporting both on-prem and Azure PaaS

Leverage OpenSearch as part of our backend architecture for search and data analytics

Optimize and troubleshoot full-stack performance, scalability, and system reliability issues

Conduct and participate in code reviews, ensuring adherence to clean code practices

Collaborate with QA and product teams to understand requirements and deliver complete, tested features

Must-Have Skills 5+ years of professional experience as a software developer

Strong expertise in: C#, ASP.NET, and .NET Core

Modern JavaScript (e.g., Angular, React, or Vue)

SQL Server (including query optimization and performance tuning)

OpenSearch/Elasticsearch

Git (branching, pull requests, merge conflict resolution)

Technical SEO knowledge covering canonical URLs, dynamic content rendering, and structured data optimization

Deep understanding of full-stack applications and troubleshooting production issues

Proven experience optimizing performance and identifying system bottlenecks

Excellent communication skills—both verbal and written

Ability to work autonomously and collaboratively in a fast-paced, agile environment

Nice-to-have Skills Familiarity with Azure PaaS services such as App Services, Azure Functions, and Storage Accounts

Experience with Azure DevOps (pipelines, repositories)

Working knowledge of geospatial data in PostgreSQL/PostGIS or similar

Join CI&T, where we are driven by Collaboration, Innovation & Transformation. In our fast-evolving landscape, your contributions will not only enhance our projects but also pave the way for breakthroughs powered by Artificial Intelligence. Together, let’s shape a bright future.

Our benefits Premium Healthcare

Meal voucher

Maternity and Parental leaves

Mobile services subsidy

Sick pay-Life insurance

CI&T University

Colombian Holidays

Paid Vacations

And many others.

Collaboration is our superpower, diversity unites us, and excellence is our standard. We value diverse identities and life experiences, fostering a diverse, inclusive, and safe work environment. We encourage applications from diverse and underrepresented groups to our job positions.

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