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Job Summary: We are seeking a senior/specialist developer to work on a new challenge with an American client in the climate solutions domain, requiring clear English communication and ownership of deliverables. Key Highlights: 1. Tech transformation specialists uniting human expertise with AI 2. Working on a new challenge for an American climate solutions client 3. Strong full-stack experience with C#/.NET Core or Python and React + TypeScript We are **tech transformation** specialists, uniting human expertise with AI to create scalable tech solutions. With over 8,000 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 a seasoned/specialist developer to work on a new challenge for an American client in the climate solutions domain. This role requires *strong English communication skills*, as you will collaborate closely with the client’s team, and demands solid real-world examples demonstrating experience building microservices, end-to-end API implementations, practical AI usage in projects, and strong ownership of deliverables. **Core Engineering Stack** * Hands-on experience with **C\#/.NET Core or Python (backend)** * Solid experience with **React \+ TypeScript (frontend)** * Proven ability to operate as an **end-to-end full stack engineer** (not just one side) **Architecture \& APIs** * Practical experience with: * **REST APIs and integrations** * **Microservices or distributed systems** * Ability to clearly and confidently explain architectural decisions **Database \& Data Handling** * Strong experience with **SQL (preferably Azure SQL)** * Ability to: * Work with **complex schemas** * **Optimize queries** * Handle **data systems and migrations** **Communication (Critical)** * English **C1\+ (fluent and structured)** * Capable of: * Responding directly and confidently * Explaining experiences without relying on the CV * Interacting in real time with U.S.-based stakeholders **Seniority \& Ownership** * **8\+ years of experience** * Demonstrated ability to: * Lead end-to-end deliveries * Operate effectively in fast-paced and ambiguous environments * Take solutions from **prototype to production** **AI\-First Mindset** * Practical use of tools such as: Copilot, Cursor, Claude, etc. * Ability to explain **how AI accelerates your workflow** **Nice\-to\-Haves (relevant differentiators)** **Domain \& Integration Experience** * Legacy system modernization * Integrations with external systems * Experience with **Salesforce, NetSuite or similar platforms** **Advanced Architecture** * Event-driven architectures * Decoupled systems * High-scale or data-intensive platforms **Automation \& RPA** * RPA experience * AI-powered automation **Cloud \& DevOps** * Experience with **Azure** * CI/CD * Containerization (Docker, etc.) **Industry Context** Experience in: * Fintech / trading / regulated environments * Climate tech (a plus) If this sounds interesting, apply now — good luck! \#LI\-JM2 **Our benefits:*** Health and dental insurance * Meal and food allowance * Childcare assistance * Extended paternity leave * Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass; * Profit Sharing and Results Participation (PLR); * Life insurance * Continuous learning platform (CI\&T University); * Discount club * Free online platform dedicated to physical, mental, and overall well\-being * Pregnancy and responsible parenting course * Partnerships with online learning platforms * Language learning platform And many more! More details about our benefits here: https://ciandt.com/br/pt\-br/carreiras At CI\&T, inclusion starts at the first contact. If you are a person with a disability, it is important **to present your assessment during the selection process.** *See which data needs to be included in the report by* *clicking here*.This way, we can ensure the support and accommodations that you deserve. **If you do not yet have the assessment, don't worry: we can support you in obtaining it.** We have a dedicated Health and Well\-being team, inclusion specialists, and affinity groups who will be with you at every stage. Count on us to make this journey side by side.
