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HumanIT Digital Consulting
HumanIT Digital Consulting
51 – 200 Employees
ConsultingLogisticsMarketing
HumanIT Digital Consulting is a people-focused consulting and talent services firm supporting organizations with digital transformation, IT consulting, and workforce development. It helps hiring companies identify, onboard, and grow talent while connecting professionals with career opportunities in digital and IT roles. The company serves both employers and jobseekers through its operations in Portugal and Switzerland.
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Senior Frontend Engineer, React and TypeScript

Build React and TypeScript SDKs, dashboards, and embedded checkout components for HumanIT’s fintech platform. Turn designs into secure, accessible payment experiences as part of a hybrid engineering team in Lisbon.

PTPortugal
€2,550 – €3,350 / month
HybridFull-timeSeniorEnglish RequiredFrontend EngineerSoftware Engineer
JavaScriptNext.jsNode.jsReactTypeScript

Description

  • Develop lightweight JavaScript and TypeScript SDKs and embedded payment components for merchant checkout experiences.
  • Build sophisticated applications for managing and analysing payments.
  • Create responsive dashboards, data visualisations, and complex configuration workflows.
  • Turn designs into precise, accessible interfaces that work reliably across browsers and devices.
  • Collaborate with Product, Design, and Engineering.
  • Contribute to automated testing, performance optimisation, production debugging, documentation, and client library versioning.
  • Support frontend engineering quality across an enterprise payment technology platform.

Requirements

  • Demonstrated success delivering sophisticated, high-performance frontend applications.
  • Extensive JavaScript and TypeScript expertise, including HTML, CSS, the DOM, and browser APIs.
  • Strong React experience and knowledge of component architecture, application state, and data fetching.
  • Ability to build responsive, data-intensive interfaces while maintaining performance and usability.
  • Exceptional visual attention to detail and skill in implementing pixel-accurate designs.
  • Experience creating accessible interfaces that meet WCAG standards.
  • Knowledge of browser security, including iframes, CSP, CORS, and sensitive data handling.
  • Strong practices in automated testing, debugging, and performance optimisation.
  • Ownership, curiosity, and confidence to challenge assumptions and explain technical decisions.
  • Professional written and spoken English proficiency.
  • Availability to work from the central Lisbon office two to three days per week.
  • Next.js experience is preferred.
  • Experience building framework-agnostic SDKs, hosted fields, or embedded checkout components is preferred.
  • Node.js and Backend-for-Frontend experience, alongside a strong frontend specialisation, is preferred.
  • Payments, fintech, or e-commerce experience is preferred.
  • Familiarity with PCI DSS and security-sensitive customer journeys is preferred.
  • Experience with AI-assisted development tools, including appropriate review and validation, is preferred.

Benefits

  • 15th-month salary.
  • Family health insurance.
  • Birthday leave.
  • Mobility programme for digital nomads.
  • Work-life balance.

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