Certisign

QA Engineer

• Quality: Reduce the frequency of errors in SaaS deployments in a sustainable way, driving continuous improvement through identifying, prioritizing, and automating the most important E2E test cases.
• Test Plan Development: Create comprehensive test plans covering different scenarios and test types, such as functional, performance, and security testing.
• Metrics Definition: Establish key performance indicators (KPIs) to measure software quality and track process improvements.
• Tool Implementation: Implement automated testing and quality management tools.
• Effective Communication: Maintain clear and concise communication with developers, stakeholders, and other areas of the company.
• Implementation of Improvements: Propose and implement improvements to development and testing processes.
• Analytical Skills: Analyze data, identify patterns, and make evidence-based decisions.
• Risk Analysis: Identify and assess security and quality risks, proposing mitigating actions.

QA Analyst (Mid-level)

Consultant

• Respond to and resolve customer tickets related to integrations and the use of REST/JSON APIs;
• Analyze logs, reproduce error scenarios and propose technical solutions;
• Perform API testing, validating responses, performance and integrations;
• Handle ticket creation, follow-up and escalation to internal teams and vendors;
• Support critical incidents, participate in crisis management and communicate with customers;
• Document technical procedures, best practices and lessons learned;
• Collaborate with development, infrastructure and DevOps teams to resolve complex issues;
• Ensure compliance with SLAs and service quality metrics.

Technical Consultant

Product Designer

• Lead **discovery and research processes** with internal and external developers, business stakeholders and technical teams to identify needs, pain points and opportunities for improvement.
• Map user journeys, flows and friction points in the experience of integration, API usage and metrics tracking.
• Create and evolve experiences across our platforms, ensuring clear, consistent and efficient experiences, including documentation, guides, examples, prototypes, benchmarks and usability best practices for developers.
• Design product interfaces with a focus on clarity, information hierarchy and data-driven decision making.
• Produce wireframes, prototypes and UX/UI specifications (low, medium and high fidelity), supporting the engineering team during implementation.
• Define and monitor, together with the product team, **experience and usability metrics**, including platform usage indicators and dashboards.
• Work collaboratively with **product, engineering, data and CX** teams to ensure alignment with the strategic vision and consistency of deliveries.
• Contribute to the evolution of patterns, components and UX best practices applied to technical products and internal platforms.

Senior UX Designer

Procurement

• Execute procurement and contracting processes for goods and services, ensuring compliance with the company's Purchasing Policy and Procedures;
• Conduct negotiations with suppliers across different categories (IT, Infrastructure, Hardware, Software, Marketing, Facilities, Legal, among others), applying Strategic Sourcing methodology;
• Review and validate purchase requisitions, ensuring adherence to specifications and guidelines;
• Prepare competitive bidding processes (RFP, invitation letter) and liaise with internal clients;
• Source and support supplier qualification/approval in alignment with Compliance;
• Create and monitor purchase orders in the ERP system, ensuring approvals, deadlines and agreed commercial terms;
• Support the formalization of contracts and contract amendments with Legal, acting as an interface between supplier, internal client and the Legal department;
• Track receipt, verification and posting of invoices;
• Support internal users and ensure governance of Purchasing processes;
• Monitor indicators (KPIs) and prepare management reports.

Purchasing Analyst – Junior

Frontend Engineer

• Develop and customize responsive interfaces using React (hooks, context, Redux or Zustand), WordPress themes, and Magento front-end.
• Integrate the front end with REST/GraphQL APIs from backends in Java (Spring Boot) and PHP (Laravel or native).
• Collaborate on code reviews, refactorings, and continuous deployment (CI/CD with GitHub Actions or similar).
• Implement unit and end-to-end tests (Jest, React Testing Library, Cypress).
• Support debugging and improvements in payment integrations (PIX, boleto), authentication, and security (JWT, OAuth).

Front-End Developer, Mid-level

Full-stack Engineer

• Build modern, responsive user interfaces using front-end technologies;
• Develop and maintain server-side logic, databases, APIs, and services using back-end technologies;
• Define and implement software architecture to ensure solutions are scalable, secure, and efficient, considering performance and maintenance requirements;
• Collaborate with product, design, and operations teams to deliver solutions aligned with client requirements, deadlines, and the established budget;
• Apply software development best practices to ensure code quality and security;
• Maintain detailed documentation of code, architecture, and technical processes to ensure solutions are easily understood and maintainable.

Full Stack Developer – Senior

DevOps Engineer

• Configure, maintain, and scale Kubernetes clusters in on-premises environments, ensuring high availability and performance.
• Manage and optimize the infrastructure of physical and virtual servers, emphasizing automation and environment reliability.
• Automate repetitive provisioning, configuration, and monitoring tasks for servers and applications using tools such as Ansible, Terraform, Puppet, etc.
• Implement and manage API Gateway solutions to control traffic and optimize communication between microservices and systems.
• Create and maintain monitoring and alerting systems to provide real-time visibility into the health of infrastructure and services using tools such as Dynatrace, Datadog, Prometheus, Grafana, ELK Stack, or similar.
• Provide real-time support for infrastructure issues and collaborate with development teams to diagnose and resolve incidents.
• Propose and implement infrastructure improvements focused on automation, security, performance, and reduction of operational costs.
• Create and maintain detailed technical documentation of procedures, processes, and configurations.