[Job - 23918] Senior Fullstack Developer (.NET/AWS), Colombia

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 Senior Fullstack Developer to join our team in Colombia. You will contribute to an innovative project in a collaborative, innovating, transforming and multicultural environment.
Position Overview:As a Senior Fullstack Developer, you will lead the design and implementation of scalable cloud-native applications using C#/.NET and AWS services. You'll architect event-driven systems, collaborate with cross-functional teams, and deliver high-impact solutions that follow 12-Factor App principles and modern software development practices.

Key Responsibilities

• Design and develop cloud-native applications following 12-Factor principles to ensure portability, scalability, and continuous deployment
• Architect and implement distributed systems leveraging C#/.NET backend technologies and Angular frontend frameworks on AWS infrastructure
• Create event-driven architectures using AWS EventBridge, Step Functions, Lambda, SNS, and SQS to build resilient, decoupled systems
• Lead technical decisions aligned with AWS Well-Architected Framework pillars, ensuring operational excellence, security, reliability, and cost optimization
• Implement comprehensive observability strategies using OpenTelemetry, CloudWatch, and X-Ray for proactive monitoring and continuous improvement
• Collaborate with Product Managers, UX Designers, and stakeholders to define requirements and ensure timely, high-quality software delivery

Required skills and qualifications

• 5+years software development experience with proven expertise in cloud-native application development
• Experience implementing 12-Factor App methodology in production environments
• Advanced proficiency in C#/.NET, TypeScript, and RESTful API development
• AWS expertise including EventBridge, Step Functions, Lambda, ECS/EKS, DynamoDB, and RDS Aurora
• Proficiency with Angular (v10+), TypeScript, HTML5, and CSS3
• Experience with microservices and event-driven architecture in production environments
• Strong DevSecOps background including container security practices
• Proficiency with both SQL and NoSQL database technologies
• Excellent cross-functional communication and collaboration skills

Nice-to-have Skills

• Multi-cloud experience with Azure and Google Cloud
• Advanced architectural patterns including Domain-Driven Design (DDD), CQRS, and Event Sourcing
• Container orchestration expertise with Kubernetes/EKS, Docker, and cloud-native deployment strategies

At CI&T, we believe in the power of Collaboration, Innovation & Transformation to create impactful digital solutions. Join our team where you'll leverage cutting-edge technologies including AI to solve complex business challenges. We foster a culture where your technical expertise will thrive in a supportive environment that values continuous learning and professional growth. Be part of a global team pushing the boundaries of what's possible in technology!
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Our benefits include:
- Premium Healthcare- Meal voucher- Maternity and Parental leaves- Mobile services subsidy- Sick pay-Life insurance- CI&T University   - Colombian Holidays- Paid VacationsAnd 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.