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. We are looking for an experienced Back-End Engineer to lead the development of scalable, distributed systems on AWS. This role involves hands-on technical contribution and close collaboration with cross-functional teams. The ideal candidate brings expertise in cloud-native development, 12-Factor App principles, and event-driven architecture, along with strong communication and leadership skills. Key Responsibilities Technical Leadership & Cloud-Native Architecture Design and implement 12-Factor cloud-native applications, ensuring portability, scalability, and continuous deployment. Build end-to-end distributed systems using C#/.NET and AWS-native services. (Experience with the latest versions of Angular is a plus.) Architect and orchestrate event-driven systems using AWS EventBridge, Step Functions, Lambda, SNS, and SQS. Promote stateless processes, effective configuration management, and backing services best practices for cloud deployment. Implement microservices architectures with clear service boundaries and asynchronous communication patterns. Collaborate with Product Managers, UX Designers, and other stakeholders to ensure the timely delivery of high-quality software. Required Qualifications 3+ years of professional software development experience. Proven application of 12-Factor App methodology in production. Deep AWS knowledge, including EventBridge, Step Functions, Lambda, ECS/EKS, DynamoDB, RDS Aurora, and the Well-Architected Framework. Advanced skills in C#/.NET, TypeScript, and RESTful API development. Proficiency in Angular (v10+), TypeScript, HTML5, and CSS3. Experience with DevSecOps practices, including container security. Strong understanding of both SQL and NoSQL databases. Solid grasp of the SDLC, Git, CI/CD, and modern DevOps practices. Experience designing and deploying microservices and event-driven architectures in production. Collaboration & Communication Skills (Must-Have) Ability to work effectively with colleagues from diverse disciplines and backgrounds. Strong verbal and written communication skills, with the ability to explain complex technical concepts to different audiences. 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.