Senior .NET Developer

At CI&T, we help large enterprises transform the potential of AI into real business impact with AI Deployment, AI-native execution, and tech-integrated business solutions.
With 30 years of experience in technological transformation, we accelerate innovation with expertise in Agentic SDLC, Application modernization, Data & AI, Martech and Business strategy.
We are 8,000 CI&Ters across more than 25 countries, collaborating to build solutions with real impact. AI is already part of how we work, evolve, and innovate every day.

Join Us as a Senior .NET Engineer! 😃 
Are you ready to step into an exciting role where your back-end development skills will shine? We’re seeking a Senior .NET Engineer to become a vital part of our dynamic team, working collaboratively across Brazil, Colombia, the UK, and the USA—all while communicating in English!
What You’ll Do:
Design & Build: Develop and maintain back-end services using C#, ADO.NET, and SQL Server.
API Development: Create and enhance SOAP and REST APIs, ensuring adherence to best practices and versioning standards.
Service Reliability: Guarantee the reliability of our services through comprehensive unit and integration testing, troubleshooting, and root-cause analysis.
Collaborative Integration: Work on integrating various systems and services while utilizing effective software design patterns.
Mentorship & Code Reviews: Conduct code reviews and mentor junior team members, sharing your expertise and insights.
Stay Current: Keep up with emerging technologies and industry trends to continuously improve our solutions.
CI/CD Contribution: Play an integral role in our CI/CD workflows, enhancing our development efficiency.
What We’re Looking For:
Experience: Strong experience with .NET Framework and .NET Core in production systems.
Database Skills: Solid understanding of ADO.NET and SQL Server, with hands-on experience in database design and performance tuning.
API Knowledge: Proficient in developing SOAP and RESTful services, including XML serialization/deserialization.
Design Patterns: Strong grasp of software design patterns and best practices.
Communication Skills: Effective communicator who thrives in fast-paced, multicultural teams.
Language Proficiency: Advanced English proficiency is a must.
Soft Skills That Matter:
Proactive Mindset: Take ownership of tasks with a focus on continuous improvement.
Collaboration: Strong communication skills across both technical and non-technical audiences.
Team Spirit: A collaborative team player who values shared success.
Adaptability: Ability to navigate ambiguity and shifting requirements with ease.
Nice-to-Have Skills:
Experience with cloud platforms, preferably Azure.
Familiarity with specification-driven development and agentic approaches.
Exposure to Agile development methodologies.
If you’re a seasoned back-end developer eager to tackle complex challenges in a dynamic environment, we invite you to apply and become a part of our diverse team!

#LI-THAI23

Our benefits include:
 
- 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.