Top Software Engineer Jobs in Rio de Janeiro

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, design and run experiments (A/B tests and AI evaluations), implement AI infrastructure for reliable LLM inference, and iterate quickly to scale production-ready LLM-powered products.

Build and ship a unified franchisee portal web app using ReactJS. Own complex web features and UIs, write well-tested TypeScript code, optimize performance, troubleshoot production issues, use AI-assisted tools (Claude, GitHub Copilot), and participate in Agile delivery practices.

Own and resolve production customer issues end-to-end: debug integrations, browser JS, agents and prompts, and database issues. Communicate directly with customers, build automation and runbooks to prevent recurrence, surface recurring patterns to Product, and raise team capability through tools and documentation.

Responsible for data collection to support model training operations. Involves working with cloud infrastructure, collaborating with AI scientists, and improving data processing.

Design, build, and operate backend services in Go/gRPC to support CX and compliance workflows. Integrate and maintain third‑party SaaS and vendor APIs, operate production systems on AWS/Kubernetes/Terraform, drive engineering best practices, collaborate cross‑functionally, and apply responsible generative AI practices to improve workflows.

As a Software Engineer II, you'll automate tasks, streamline the development lifecycle, and optimize deployment processes while collaborating with teams to enhance workflows and practices.

As a Senior Full-Stack Software Engineer, you'll design and build production systems, make technical decisions, mentor teammates, and innovate technology solutions in a collaborative environment.

Maintain and scale a self-hosted n8n enterprise automation platform: develop custom nodes and webhooks, design asynchronous workflows, manage production infrastructure, resolve system bottlenecks, and align technical solutions with business stakeholders.

The Senior Frontend Software Engineer will lead frontend feature releases, integrate AI tools, develop user interfaces, collaborate with backend teams, and improve team efficiency while ensuring code quality and performance.

As a Senior Backend Software Engineer, you will manage product updates, collaborate with teams, and ensure system stability using technologies like Java Spring Boot.

Design, build, and support high-volume, low-latency payment processing systems for capital markets. Develop microservices, REST APIs, and event-driven integrations (Kafka/IBM MQ/JMS). Implement end-to-end payment workflows, reconciliation, exception handling, and production support while collaborating with operations and business stakeholders to deliver enhancements and modernization initiatives.

You will design and maintain Python applications while implementing DevOps practices, managing cloud infrastructure, and mentoring junior engineers.

Develop and enhance backend features and services for a cybersecurity platform using Java, Spring Boot, and SQL, along with scripting for automation and tool builds.

Develop and maintain shared platform components across UI, backend services, APIs, and shared services. Design, implement, test, and debug features; support production reliability and security; participate in code reviews and collaborate with QA and product teams; support customer escalations related to platform functionality.

The Software Engineer II is responsible for solving problems, developing new features, collaborating with teams, mentoring, and ensuring quality in scalable solutions.

As a Senior Backend Software Engineer, you will design, build, and maintain AI-powered backend services, ensuring quality and performance in a collaborative environment.

Build and maintain scalable, reliable software; own features end-to-end; participate in architecture, design, code reviews, and production monitoring; collaborate with product and design; adopt AI tools to improve productivity.

Senior Cloud Software Engineer focused on .NET modernization and cloud-native application development. Build and modernize .NET and C# applications, containerize Windows services to Docker/ECS, migrate messaging and web frameworks, collaborate with architects and clients, and expand into AI, AWS, and other languages as engagements evolve.

Build full‑stack features that automate reporting and slide/document generation: database models, async workflows, UI components, AI insights, native charts, data sync optimizations, and integrations with BI and content platforms.

Design, build, test, deploy, and maintain scalable backend services in Java. Work with event-driven architectures (Kafka, SQS, RabbitMQ), relational databases, AWS services, and containerized environments. Ensure observability, scalability, and reliability while collaborating with cross-functional teams and promoting engineering best practices.

As a Senior Backend Software Engineer at Wellhub, you will enhance user experiences through gamification while integrating AI solutions and mentoring less experienced developers.

As a Software Engineer in the Platform team, you will design and maintain APIs, enhance API performance, collaborate on B2B solutions, and align backend architecture with product strategy.

As a Forward Deployed Engineer, you'll collaboratively deliver innovative solutions, working closely with clients to tackle complex projects and drive real impact using ElevenLabs’ technologies.

Develop and maintain MCP tools and the MCP Toolbox for Databases; expand test coverage for agentic coding assistants; refactor and maintain test frameworks; convert technical posts into production-ready sample code and documentation; build real-world data applications (QueryData) to support product R&D and collaborate with cross-functional teams to accelerate agentic AI adoption.

Join Aleph's engineering team to develop the Core Product, focusing on user-facing features for financial data insights. Collaborate with leadership, design robust software components, and contribute to system architecture in a fast-paced, remote environment.