[Job - 31975] Mid-Level .NET Developer, Colombia
Summary
CI&T is hiring a Senior .NET Developer in Colombia to design, build, and maintain back-end services and integrations using C#, .NET Framework/Core, ADO.NET, SQL Server, and SOAP/REST APIs. The role includes testing, troubleshooting, code reviews, mentoring, and CI/CD, working in English with a multicultural team across Brazil, Colombia, the UK, and the USA.
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.
We are looking for a Mid-Level .NET Engineer to join our team and drive the development and integration of complex back-end software solutions. You will work closely with a multicultural team distributed across Brazil, Colombia, the UK, and the USA, collaborating daily in English and contributing to robust, scalable services and integrations.
Must-Have Skills:
- .NET Experience: strong experience with .NET Framework and .NET Core in production systems.
- Backend Development: hands-on experience building back-end services with C#, ADO.NET, and SQL Server.
- APIs & Integration: solid experience implementing and evolving SOAP and RESTful services, including versioning and best practices.
- Data & Persistence: strong understanding of ADO.NET, SQL Server, database design and performance tuning.
- XML: proficiency in XML serialization/deserialization.
- Software Design: solid grasp of software design patterns and engineering best practices.
- Testing & Reliability: experience with unit and integration testing, troubleshooting and root-cause analysis for service reliability.
- Communication: effective communication skills in multicultural, fast-paced environments.
- Language: advanced English proficiency (all communication in English).
Key Responsibilities
- Design, build and maintain back-end services using C#, ADO.NET and SQL Server.
- Implement and evolve SOAP and REST APIs, ensuring proper versioning, security and best-practice standards.
- Ensure service reliability through unit and integration tests, troubleshooting, monitoring and root-cause analysis.
- Collaborate on integration between multiple systems and services, applying appropriate software design patterns.
- Conduct code reviews, provide technical feedback and mentor junior engineers.
- Stay current with emerging technologies and industry trends, applying them to improve existing solutions.
- Contribute to CI/CD workflows and best practices to increase development efficiency and deployment quality.
Soft Skills
- Ownership & Continuous Improvement: proactive in taking responsibility for tasks and driving improvements.
- Communication: able to clearly explain complex technical topics to both technical and non-technical audiences.
- Collaboration: team player who values shared success and cross-functional collaboration.
- Adaptability: comfortable navigating ambiguity and shifting requirements in a dynamic environment.
Nice-to-Have Skills
- Cloud: experience with cloud platforms, preferably Microsoft Azure.
- Modern Practices: familiarity with specification-driven development and agentic approaches to software development.
- Agile: exposure to Agile methodologies (Scrum, Kanban, etc.).
The successful candidate will deliver reliable, performant back-end services and integrations, help elevate engineering standards through reviews and mentorship, and collaborate smoothly across time zones and cultures using English as the primary language.
If you are a seasoned back-end developer ready for complex challenges in a dynamic, multicultural environment, we invite you to apply and become part of our diverse team!
#LI-THAI23
Skills
As published by lever · 23 questions · 5 written answers
Basics
Resume/CV, Full name, Pronouns, Email, Phone, Current location, Current company, LinkedIn URL
Short answers (5)
- How comfortable do you feel working in an English-speaking environment?
- Please, confirm country and city where you are currently living
- When will you be available to start working with us? (DD/MM/AAAA)
- If the previous answer is Yes, please share the name(s) of these individuals. optional
- Confirm the name of the company where you work/ Confirme o nome da empresa em que você trabalha atualmente
Pick from a list (13)
- [EN] What is your level of confidence when communicating and collaborating in an English-speaking work environment? optional
- [ES] What is your level of confidence when communicating and collaborating in an Spanish-speaking work environment? optional
- How did you hear about our job opening? optional
- Do you have any relatives (such as parents, siblings, in-laws, spouses, or children, stepchildren, stepfather/stepmother, son-in-law/daughter-in-law), close friends, or acquaintances (with whom you have a significant and ongoing relationship) who currently work at CI&T?
- Are you legally authorized to work in Colombia?
- Do you require any type of accessibility for the selection process and/or in your daily life??
- Will you now or in the future require sponsorship for Colombia's employment visa status?
- Would you like to tell us your gender identity? We ask about gender identity to better understand and support the diverse identities of our employees and to ensure our workplace is inclusive. optional
- Are you part of the LGBTQIAP+ community? optional
- How would you self-declare? Collecting information on ethnic backgrounds allows us to ensure our diversity and inclusion efforts are effective and to address any potential disparities. optional
- To understand better your necessities or any accommodations you need for our process & interviews, we would like to know if you are a person with disabilities? optional
- If applicable, please tell us what type of disability you have: (Edit to include options:) optional
- By selecting the option below, I declare that I have read, understood, and agree to the terms of this document, and I consent to the processing of my personal data by CI&T and Lever for the purposes described herein. Read the document here: https://drive.google.com/file/d/1dMaskYl2VD1AtN9MfiHrZiA-YFYwq8aI/view optional
Written answers (5)
- What is your salary expectation? (please inform the gross amount in Colombian Pesos)
- How long have you worked in Development?
- For how long have you worked with .Net?
- How long have you worked with Azure?
- Do you have experience in CI/CD? And DevSecOps?