Top Software Engineer Jobs in Rio de Janeiro

Build and ship production AI agents that help mobile app developers manage subscriptions and paywalls. Own agent orchestration, tool execution, context management, evaluation, observability, permissions, and human-in-the-loop controls. Develop reliable, secure, user-facing backend systems, scope projects independently, monitor adoption, improve features after launch, participate in architecture and incident response, and mentor engineers.

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

Build and own customer-facing and back-office software across web, mobile, APIs, data engineering, and DevOps. Develop JavaScript frontends and Java backends, deploy scalable applications on AWS, establish engineering best practices, adopt AI-assisted development tools, mentor junior engineers, and collaborate cross-functionally on high-impact initiatives.

Design and implement reliable, high-performance Rust services and libraries powering trading, payments, and crypto products. Build scalable distributed systems, network services, and asynchronous applications for revenue-critical, low-latency environments. Debug issues across the operating system, network, and application layers; collaborate with product teams; own systems end to end; and mentor engineers while contributing to technical culture.

As a Staff Fullstack Software Engineer, lead technical strategy, system evolution, operational excellence, and mentor teams while promoting wellbeing at work.

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.

Design, build, test, and maintain scalable software applications and services. Collaborate with cross-functional teams, write clean maintainable code, integrate APIs and databases, troubleshoot performance, participate in code reviews, and support deployment and documentation across the full software lifecycle.

Design and scale backend systems, APIs, and services for Nango’s open-source developer infrastructure platform. Build APIs, SDKs, UIs, and runtime systems, optimize performance and reliability, solve integration challenges with customers, shape the roadmap, and maintain the open-source repository. The role requires strong ownership, product thinking, developer empathy, communication, and autonomy in a remote-first startup environment.

The role involves building and shipping production-grade applications across the full stack, working with real-world datasets, integrating various services, and collaborating with AI and product teams to develop AI-enabled solutions for the public sector.

Design, build, and maintain scalable brokerage systems supporting international markets. Develop Go-based backend services, gRPC microservices, React interfaces, and vendor integrations. Collaborate with global engineering teams to support multiple languages, currencies, and markets. Lead regional reliability efforts, act as incident commander, troubleshoot production issues, mentor engineers, and contribute to recruitment and cross-functional initiatives. Participate in on-call support and help ensure proactive 24x7 system stability.

Develop and maintain scalable Ruby on Rails applications and backend services using microservices, AWS, and Azure PaaS. Design architectures, interpret requirements, test across environments, optimize performance, and maintain existing systems. Mentor engineers, support team development, participate in hiring, document solutions, and collaborate with product, design, and frontend teams to deliver reliable software.

Design, build, and maintain cloud data pipelines and Snowflake/dbt data models; develop AI-powered applications using LLMs, RAG, tool-calling, and agent workflows; create APIs and integrations; monitor performance, data quality, and costs; troubleshoot interconnected systems; apply security, governance, testing, and CI/CD best practices; partner with stakeholders to deliver scalable solutions.

Design and implement scalable backend microservices for a high-throughput chat platform. Build and iterate chatbot conversational interfaces (WhatsApp), integrate cloud services (Google Cloud), manage infrastructure for real-time messaging at scale, mentor junior engineers, collaborate with product and UX, and use analytics and customer feedback to continuously improve the conversational experience.

Build and maintain frontend and backend features for AI-focused web applications. Responsibilities include implementing interfaces, integrating REST and GraphQL APIs, working with relational databases, debugging, writing unit and integration tests, following Git and security practices, and participating in code reviews and stand-ups. The role emphasizes AI-assisted development, strong communication, reliable delivery, and rapid technical growth under senior-engineer mentorship.

Build and maintain end-to-end web applications powering sales and operations. Design tools for quoting, scheduling, and fulfillment, integrate AI into products, collaborate on UX, ship high-impact features, and contribute to architecture, deployment, and engineering culture.

Design and implement robotic software solutions using ROS/ROS2, C++17 and Python. Work on navigation, localization, fleet management, mission planning, control, simulation, testing, and contribute to open-source projects while mentoring peers.

As a Staff Software Engineer, you will lead software architecture development, mentor engineers, ensure code quality, and drive process improvements.

Lead design and implement a scalable, secure multi-tenant SaaS using .NET and Angular. Own end-to-end feature delivery, leverage AI-assisted coding, apply DDD/CQRS/event-driven patterns, optimize data and SQL performance, mentor engineers, and maintain CI/CD, observability, and automated testing.

As a Senior Software Engineer at Flex, you will lead back-end development for financial products, mentor engineers, and drive architecture design while focusing on scalability and data integrity.

Design, implement, and scale Rust services and libraries for trading, payments, and crypto. Build reliable, high-performance distributed systems, collaborate on architecture, write testable async network code, and own production systems end-to-end.

Design, build, and operate AI-powered backend services and APIs for production LLM features. Ensure reliability, low latency, cost efficiency, observability, and event-driven architectures; review designs and help move experiments to production.

The Senior Software Engineer will design and optimize systems for financial reporting and automation, mentor teammates, and collaborate with cross-functional teams to develop robust software solutions, leveraging accounting experience.

Build and maintain scalable full-stack web application features and distributed microservices. Own complex features from technical design through production deployment, improve the web application’s technical strategy, support performance and reliability, participate in on-call rotations, troubleshoot incidents, and maintain high service levels. Collaborate with product, infrastructure, design, and API teams while mentoring engineers and improving CI/CD, containerization, and observability.

Design and implement scalable backend microservices for a chat-driven remittance platform. Build, deploy, and iterate chatbot and conversational interfaces (WhatsApp), integrate cloud services, manage infrastructure for high throughput, mentor junior developers, and use analytics and customer feedback to improve conversational experiences.

Design and implement scalable backend microservices for a high-throughput chat platform. Build and iterate conversational chatbot interfaces, integrate cloud services, manage infrastructure for real-time messaging, mentor junior developers, and leverage analytics and customer feedback to improve user experience.