Valid

• Administer and optimize Linux environments at an advanced level. • Manage Java application servers. • Implement and maintain Kubernetes clusters with a focus on scalability and resilience. • Maintain a strong focus on environment security. • Configure and monitor web servers and load balancers (Apache, NGINX, HAProxy). • Collaborate with cross-functional teams to ensure system reliability and drive innovation.

• Monitor security events in real time using SIEM, XDR, and other industry-standard security tools. • Perform advanced alert triage, distinguishing false positives from real incidents. • Correlate events from multiple sources (network, endpoint, identity, cloud). • Execute operational playbooks for initial response. • Escalate relevant incidents to higher tiers (N2) with structured context. • Contribute to rule tuning and continuous improvement of detection quality. • Document evidence, analyses, and classifications in incident management tools.

• Develop, maintain, and enhance enterprise applications using Microsoft technologies. • Work on back-end development with a focus on performance, scalability, and programming best practices. • Participate in the maintenance and modernization of legacy systems built with VB.NET, ASP.NET MVC, and .NET Framework. • Develop web interfaces using HTML, JavaScript, and Bootstrap. • Create and maintain integrations with SQL Server, Oracle, and PostgreSQL databases. • Perform technical analysis, fix bugs, and implement continuous improvements. • Participate in code reviews and the definition of application architecture. • Support cross-functional teams to ensure the quality and stability of deliveries. • Contribute to technology modernization processes and migration of legacy applications to newer versions of .NET.

• Conduct end-to-end technical investigations of security incidents. • Execute response actions (containment, eradication, and recovery). • Perform forensic analysis on endpoints and network events (intermediate/advanced level). • Develop and refine incident response playbooks. • Conduct proactive threat hunting based on hypotheses and threat intelligence. • Prepare technical and executive incident reports. • Collaborate with infrastructure, cloud, and identity teams. • Develop and execute threat hunting strategies based on TTPs. • Create and optimize use cases and detection rules. • Integrate and analyze threat intelligence feeds. • Support complex investigations and critical incidents. • Develop dashboards, advanced queries, and behavioral analyses. • Participate in Red/Purple Team exercises. • Support the technological evolution of the SOC.

Role Description Aqui na Valid, trabalhamos para promover a identificação segura de pessoas, jornadas e transações, tanto no setor público quanto no setor privado. Nossas soluções físicas e digitais são dedicadas a três grandes ecossistemas: - Identificação & Governo Digital - Bancos & Meios de Pagamento - Conectividade Segura Nosso papel é autenticar, autorizar e garantir a segurança de todos os envolvidos. Isso é o que fazemos para cada um dos nossos mais de 1.200 clientes no Brasil e no mundo. Na Valid, acreditamos que cada pessoa é única e nosso propósito é empoderar o que há de mais genuíno em cada uma, criando um ambiente onde todos possam evoluir e deixar suas marcas. Valorizamos profissionais que: - Construam relações de confiança com clientes externos, parceiros e outras áreas da empresa - Foque em melhorar o que já existe ou criar coisas novas - Busquem a excelência nas entregas - Pratiquem a colaboração em equipe Isso faz parte da nossa Cultura, do nosso jeito Valid, que se traduz nos nossos quatro valores: - Somos movidos pelo cliente - Nunca paramos de evoluir e aprender - Fazemos acontecer e fazemos bem-feito - Jogamos juntos e jogamos limpo Aqui, nós valorizamos oportunidades igualitárias e estamos comprometidos em construir um ambiente seguro, respeitoso e acolhedor para todas as pessoas. Não discriminamos com base em raça, religião, cor, nacionalidade, gênero, orientação sexual, deficiência ou qualquer outra base. Qualifications - Ensino Superior Completo em áreas correlatas - C#, .NET 8 e .NET Framework 4.8 - APIs REST, Windows Services e Workers - Bancos de dados relacionais e NoSQL, Entity Framework e Dapper - RabbitMQ, PubSub, OAuth, OpenID e JWT - SOLID, Git - JavaScript, HTML5, CSS3 e React JS - PostgreSQL e SQL Server Requirements - Desenvolver e Manter aplicações em C#, utilizando .NET 8.0 e .NET Framework 4.8. - Criar e Gerenciar APIs REST, Windows Services e Workers. - Trabalhar com bancos de dados relacionais e NoSQL, aplicando ORMs. - Implementar soluções de mensageria (RabbitMQ, PubSub, etc.). - Garantir a segurança com OAUTH, OpenID e JWT. - Aplicar os princípios SOLID no desenvolvimento de software. - Desenvolver interfaces de usuário com Javascript, HTML5, CSS3 e React JS. - Utilizar GIT para controle de versão. - Operar com bancos de dados PostgreSQL e SQL Server. Benefits - 🏥 Assistência Médica-Hospitalar - 😁 Convênio Odontológico - 🍽️ Ifood Benefícios - 🏋️ Wellhub - 🚌 Vale-Transporte - 👶 Auxílio Creche - 📈 Participação nos Resultados (PLR) - 🛡️ Seguro de Vida - 🏠💼 Modelo de Trabalho Remoto - 🎉 Day Off

• Atuar no desenvolvimento end-to-end (back-end, front-end e mobile) • Projetar, desenvolver e manter aplicações escaláveis e de alta performance • Definir arquiteturas e boas práticas de desenvolvimento • Realizar code review e mentorar desenvolvedores mais juniores • Trabalhar em conjunto com times de produto, design e infraestrutura • Garantir qualidade de código, testes automatizados e boas práticas de CI/CD • Participar ativamente de decisões técnicas e evolução da stack

• Work closely with Product teams to define and evolve data-driven features • Develop analyses and Machine Learning models applied to product use cases (e.g., recommendation, personalization, churn) • Design and run experiments and A/B tests to validate hypotheses and measure product impact • Define and monitor product metrics and model performance • Support roadmap decisions with actionable insights • Ensure integration, monitoring, and continuous improvement of models in production

• What you'll do • Develop scalable backend services and APIs • Build automation platforms and workflow orchestration • Integrate systems and correlate data from multiple sources • Develop solutions using LLMs (GenAI), RAG, and agents • Automate risk, vulnerability, and governance processes • Create data pipelines and search mechanisms • Evolve proofs of concept (POCs) into production

• Develop and maintain REST APIs, Windows Services and Workers using .NET 8.0 and .NET Framework 4.8. • Implement solutions based on SOLID design principles and scalable architectures. • Work with relational and NoSQL databases, ensuring integration and query optimization. • Build user interfaces using React, JavaScript, HTML5 and CSS3 to deliver a smooth user experience. • Integrate and implement authentication using OAuth, OpenID and JWT. • Collaborate using version control with Git and work with messaging systems such as RabbitMQ or Pub/Sub. • Ensure code quality and efficiency by applying software development best practices.

• Develop and maintain APIs and services in Python (FastAPI) for infrastructure automation, pipelines, and FinOps processes. • Work on developing a FinOps platform on GCP, including cloud cost collection, analysis, and visualization. • Create and manage CI/CD pipelines using Bitbucket Pipelines. • Integrate systems with GCP (GKE, Cloud Run, Compute Engine, Billing APIs, etc.) via APIs and SDKs. • Develop and evolve the tool's user interface in ReactJS (optional, a plus). • Create automations for provisioning, standardization, and governance of cloud resources (IaC, APIs, SDKs).