[Job- 32175] Senior Back End Developer (Python/Golang & AI Integration), Brazil

OpenKrill; United States; On-site; USD 130,000 - 180,000; Full time

Benefits offered by this job

Health and dental insurance

Meal and food allowance

Childcare assistance

Extended paternity leave

Wellhub Gympass and wellness programs

Profit Sharing and PLR

Job summary

CI&T is seeking a Senior Backend Engineer to design, develop, and scale high-performance backend services that integrate AI capabilities into distributed systems. The role focuses on Go and Python, microservices, and LLM tooling to enable AI-powered workflows.

You will work with Azure cloud services, Redis caching, and SAP/ERP integrations while ensuring reliability and scalability in modern applications for US-based clients.

Qualifications

• Experience designing and building scalable backend services using Go and Python.
• Proficiency with microservices, event-driven patterns, and distributed caching.
• Hands-on integration with SAP/ERP systems and Azure cloud services.

Responsibilities

• Design, develop, and maintain scalable backend services and APIs using Go and Python.
• Integrate AI capabilities, LLMs, RAG pipelines, and tool calling into backend workflows.
• Leverage Azure to deploy, monitor, and optimize high-performance services.

Skills

Go (Golang)

Python

Microservices

Event-driven architecture

Distributed caching

Tools

SAP integration

S/4HANA & ERP via OData

Azure services (APIM, Service Bus, Event Hubs, PostgreSQL)

Redis caching

OIDC/OAuth 2.0

Job description

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 Senior Backend Engineer to design, develop, and scale high-performance backend services, integrating AI capabilities into modern distributed systems. This role combines strong backend engineering expertise with hands-on experience in LLM integrations, Retrieval-Augmented Generation (RAG), and tool calling, leveraging technologies such as Go, Python, and Microsoft Azure.

The ideal candidate will bring a solid understanding of microservices architecture, event-driven systems, distributed caching, and resilient service design to build reliable, scalable, and AI-enabled backend solutions.

Responsibilities:

• - Backend Architecture & Development: Design, develop, and maintain scalable backend services and APIs using Go and Python, applying microservices and event-driven architecture principles to support high-performance, distributed applications.
• - AI & LLM Integration: Integrate LLM capabilities into backend services, implementing RAG pipelines, tool calling, and AI orchestration patterns to enable intelligent, context-aware application workflows.
• - Cloud Infrastructure & Performance Optimization: Build and integrate cloud-native services on Microsoft Azure, implementing distributed caching strategies with Redis and optimizing service performance, scalability, and resource utilization.
• - Reliability & Distributed Systems Engineering: Design resilient backend architectures by implementing fault tolerance, retries, timeouts, and appropriate error-handling strategies, ensuring reliable communication and execution across distributed services and AI-powered workflows.

Requirements:

• - Languages: Go (Golang) and Python.
• - SAP integration (required): S/4HANA and ERP via OData, IDocs, BAPIs, RFCs, APIs and middleware. Preferred: BTP, CPI, MDG, Variant Configuration.
• - Azure integration: APIM, Service Bus, Event Hubs, PostgreSQL, SQL, Entra ID, OAuth 2.0 and OIDC, Key Vault, networking, IaC.
• - Caching (required): Redis, distributed caching, cache-aside, invalidation.
• - AI (lighter): LLM integration, tool calling, RAG, and AI coding tools (Codex, Claude Code, Copilot).
• - Architecture: microservices, event-driven systems, resiliency and retries.

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!

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.