[Job - 31547] Senior .NET Developer
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Summary
Senior .NET developer who designs and builds C# REST APIs and event-driven integrations connecting a partner-facing portal with internal loan systems, deployed as containers on Azure via GitLab CI pipelines. Needs 6+ years of .NET experience and B2+ English for daily collaboration with a US-based team.
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.
Responsibilities:
• Design and build RESTful APIs and services in .NET that integrate a new partner-facing portal with internal loan systems.
• Implement business logic per documented API contracts and business rules.
• Build and consume asynchronous, event-driven integrations (message/queue-based notifications).
• Write automated tests and participate in code review.
• Deploy and operate services in containers on Azure, using GitLab CI pipelines.
• Troubleshoot and resolve defects across Development, QA, UAT, and Production environments.
• Collaborate with the Business Analyst and Software Architect to clarify requirements and edge cases.
• Implement business logic per documented API contracts and business rules.
• Build and consume asynchronous, event-driven integrations (message/queue-based notifications).
• Write automated tests and participate in code review.
• Deploy and operate services in containers on Azure, using GitLab CI pipelines.
• Troubleshoot and resolve defects across Development, QA, UAT, and Production environments.
• Collaborate with the Business Analyst and Software Architect to clarify requirements and edge cases.
Requirements:
• 6+ years of professional software development experience with .NET (C#), including independent ownership of complex features end-to-end.
• Experience building and consuming REST APIs.
• Practical experience with Microsoft Azure services (App Services, Functions, Service Bus, or equivalent).
• Experience with containerized deployments (Docker).
• Experience with Git and CI/CD pipelines (GitLab CI or equivalent).
• Familiarity with automated testing frameworks (unit and integration tests).
• Good English communication skills (B2+) — daily collaboration with a US-based team.
• Experience building and consuming REST APIs.
• Practical experience with Microsoft Azure services (App Services, Functions, Service Bus, or equivalent).
• Experience with containerized deployments (Docker).
• Experience with Git and CI/CD pipelines (GitLab CI or equivalent).
• Familiarity with automated testing frameworks (unit and integration tests).
• Good English communication skills (B2+) — daily collaboration with a US-based team.
Nice to Have:
• Experience with OAuth 2.0 / bearer-token security patterns.
• Experience with event-driven or asynchronous architectures (Service Bus, pub/sub).
• Experience in mortgage, lending, or financial services.
• Experience integrating with legacy or mainframe systems via APIs.
• Experience with event-driven or asynchronous architectures (Service Bus, pub/sub).
• Experience in mortgage, lending, or financial services.
• Experience integrating with legacy or mainframe systems via APIs.
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.
Skills
As published by lever · 19 questions · 1 written answer
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 (1)
- What is your salary expectation? (please inform the gross amount in Colombian Pesos)