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

Openkrill; United States; Remote; USD 120,000 - 190,000; Full time

Benefits offered by this job

Premium Healthcare

Meal voucher

Maternity and Parental leaves

Mobile services subsidy

Sick pay-Life insurance

CI&T University

Colombian Holidays

Paid Vacations

Job summary

CI&T is seeking a Senior Backend Engineer to design, develop, and scale high-performance backend services that weave in AI capabilities. You will build microservices in Go and Python, implement LLM integrations, RAG pipelines, and tool calling within distributed systems.

You'll deploy on Microsoft Azure, optimize performance with Redis caching, and ensure resilient, event-driven architectures to support AI-powered workflows across enterprise-scale applications.

Qualifications

• Backend development and distributed systems experience.

Responsibilities

• Design, develop, and maintain scalable backend services and APIs using Go and Python.
• Integrate LLM capabilities, including RAG pipelines and tool calling.
• Build cloud-native services on Azure and implement distributed caching with Redis.
• Ensure resilient, event-driven microservices with retries and fault-tolerance.

Skills

Backend development

Distributed systems

Cloud architecture

Go

Python

Tools

Go (Golang)

Python

Azure

Redis

SAP integration (S/4HANA, IDocs, BAPI, RFCs)

OData / RFCs / IDocs

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.

#LI-LO1

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.