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Sinqia

Senior Frontend Developer

Sinqia

. Build Angular frontend interfaces for intelligent document processing.

Posted 11/4/2026full-timeSão Paulo • BrazilSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates advanced proficiency in Angular and TypeScript for building user-centric frontend interfaces, with a strong focus on document processing and validation workflows. Capable of integrating REST APIs and ensuring compliance with frontend security best practices.

Highest-signal resume keywords
Angular DevelopmentTypeScript ProficiencyREST API IntegrationAutomated TestingCI/CD Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Frontend DevelopmentRouting and Complex FormsPDF.jsOAuth2/OIDC AuthenticationError HandlingAsynchronous Loading StatesMicro-frontendsWeb Vitals OptimizationHuman-in-the-Loop InterfacesCoordinate Overlays
Tools & Technologies
JestVitestTesting LibraryCypressPlaywrightAmazon CognitoStorybook
Industry Keywords
Document ProcessingAccessibilityPerformance OptimizationUX PrinciplesFrontend Security Best Practices

Tech Stack

Tools & technologies
AngularCypressJavaScriptJestTypeScript

About the role

Key responsibilities & impact
  • Build Angular frontend interfaces for intelligent document processing.
  • Develop user experiences for document submission, processing tracking, review and correction of extracted fields, and result approval.
  • Create PDF and image document viewers with zoom and bounding-box annotation capabilities.
  • Implement side-by-side document and extracted-data review.
  • Develop business-rule configuration and validation features.
  • Integrate REST APIs and real-time events to monitor processing status.
  • Collaborate with Backend and QA teams on API contract definition and end-to-end testing.
  • Ensure accessibility, responsiveness, performance, and compliance with the design system.

Requirements

What you’ll need
  • More than 6 years of experience in frontend development.
  • Advanced proficiency in Angular and TypeScript.
  • Experience with routing and complex forms with validation.
  • Experience rendering documents in the browser using PDF.js, Canvas, or equivalent technologies.
  • Knowledge of coordinate overlays and bounding boxes on documents.
  • Experience integrating OAuth2/OIDC authentication and/or Amazon Cognito.
  • Experience handling errors, asynchronous loading states, and REST API consumption.
  • Knowledge of automated testing using Jest, Vitest, Testing Library, Cypress, or Playwright.
  • Experience with CI/CD.
  • Knowledge of frontend security best practices, including XSS prevention and CSP implementation.
  • Experience building Human-in-the-Loop interfaces for Artificial Intelligence solutions.
  • Experience reviewing predictions, correcting results, and implementing feedback loops.
  • Experience with Micro-frontends.
  • Knowledge of Storybook.
  • Experience with Web Vitals and performance optimization.
  • Understanding of UX principles applied to document review and validation workflows.

Benefits

Comp & perks
  • Meal or food allowance
  • Flexible Benefits (Flash)
  • Health insurance
  • Partner providers for psychological, legal, financial, and nutritional support (CLUDE, C4LIFE, and ASQ)
  • Psicologia Viva
  • Dental insurance
  • Childcare assistance
  • Assistance for children with special needs
  • Fertility assistance
  • Extended maternity and paternity leave
  • Transportation allowance or home office allowance (for remote-work contracts)
  • Gympass (Wellhub) and TotalPass
  • Flexible working hours
  • Life insurance
  • Partner discounts club
  • Partnership with Sesc
  • Beca (education incentive program)
  • Profit-sharing or bonus, based on achievement of goals and results