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Senior Python Backend Developer

CI&TSão Paulo, SP
On-site Full-time

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Experience Level

Senior

Qualifications

Solid and proven experience as a backend developer in complex projects (senior level). Advanced proficiency in Python. Practical experience with AI orchestration frameworks: LangChain and LangGraph. Multilingual profile: proficiency or desirable knowledge in languages such as Golang and . NET for diverse banking contexts. Experience with MongoDB and SQL databases. Experience in Azure and AWS cloud environments. In-depth knowledge of all stages of the software development life cycle (SDLC).

About the job

CI&T brings together human expertise and AI to deliver scalable technology solutions. With a global team of over 8,000 people and more than 1,000 client partnerships in the past three decades, the company places artificial intelligence at the center of its work.

Location Note: Candidates living in the Metropolitan Region of Campinas must work onsite at the Campinas office, following current attendance policy.

Role Overview

This Senior Python Backend Developer position sits within CI&T’s Center of Excellence in Software Engineering (COE), focusing on integrating artificial intelligence throughout the Software Development Life Cycle (SDLC). The project aims to build accelerator agents for a banking client, streamlining both upstream and downstream processes by applying advanced AI orchestration technologies and modern development practices.

What You Will Do

  • Develop and maintain backend applications using Python as the main language.
  • Create automation flows and intelligent agents with LangChain and LangGraph.
  • Work with multidisciplinary teams to embed generative AI solutions into SDLC processes.
  • Design and manage SQL and NoSQL databases, including MongoDB, with a focus on efficiency and security.
  • Operate in hybrid cloud environments using Azure and AWS.
  • Participate in code reviews and help define architectural best practices.
  • Support the Developer Experience (DevEx) by building tools that improve engineering team productivity.

Required Qualifications

  • Senior-level experience as a backend developer on complex projects.
  • Advanced Python skills.
  • Hands-on experience with AI orchestration frameworks such as LangChain and LangGraph.
  • Proficiency or working knowledge of other languages like Golang and . NET, especially for banking applications.
  • Experience with MongoDB and SQL databases.
  • Background in Azure and AWS cloud platforms.
  • Thorough understanding of all phases of the software development life cycle.

Preferred Qualifications

  • Experience with AI-coding tools such as Cursor, Cline, Claude-code, and Antigravity.
  • Understanding of RAG (Retrieval-Augmented Generation) architectures.
  • Knowledge of caching and performance optimization using Redis.
  • Familiarity with the GENIA tool.
  • Basic experience with front-end development for component integration.

Personal Competencies

  • Strong technical communication skills.

About CI&T

CI&T is a leader in technological transformation, merging human expertise with artificial intelligence to deliver scalable tech solutions. With a rich history of over 30 years and a global team of over 8,000 professionals, CI&T has established valuable partnerships with more than 1,000 clients.

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