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Open nowFirst seen 4 hours ago

Senior Fullstack Engineer (Node.js/AWS/AI-Native) - Portugal Full Remote

HumanIT Digital Consulting107 open roles

Where
Lisbon, Portugal, Remote
Work mode
Remote
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Your applicationOpen nowSenior Fullstack Engineer (Node.js/AWS/AI-Native) - Portugal Full RemoteHumanIT Digital Consulting · Lisbon, Portugal, Remote

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The clock on this job

Early applications get read.

11.3% of postings close within 7 days. Measured by our own scanner across the market.

Share of postings closed within
  1. 2.0%1 day
  2. 4.2%3 days
  3. 11.3%7 days
  4. 17.5%14 days
  5. 34.2%30 days
  6. 43.5%60 days
This job: first seen 4 hours ago

The posting

Senior Fullstack Engineer (Node.js/AWS/AI-Native) - Portugal Full Remote

ABOUT THE OPPORTUNITY

Are you an engineer who already builds with AI coding agents every day? We’re looking for an AI-native Senior Fullstack Engineer to own the design, build and scaling of production-grade software for a well-established UK digital retail and financial services company. AI tools are a core part of this role, not an occasional extra. You’ll use Claude Code, Cursor and similar agents to plan, build, test, debug and ship high-quality software quickly, and you’ll stay fully accountable for every line that goes to production.

PROJECT & CONTEXT

Our client is a recognised UK player in retail, payments, credit, fraud and financial services. The business is in the middle of a major technology transformation and is investing heavily in modern cloud platforms and AI-driven development.

You’ll work mainly with Node.js, TypeScript and AWS, building backend services and integrations across commercial platforms, payments, fraud, originations and financial infrastructure. Your work will cover:

  • Designing and maintaining scalable, secure backend services and REST APIs
  • Integrating third-party platforms and SaaS solutions
  • Deploying, monitoring and scaling applications on AWS
  • Reviewing and validating AI-generated code for security, performance and maintainability
  • Refactoring and modernising existing services
  • Building automated testing, CI/CD pipelines and observability
  • Troubleshooting production issues

You’ll take requirements through to production with minimal supervision and work alongside technical and business stakeholders on UK business hours.

WHAT WE’RE LOOKING FOR (Required)

  • Significant commercial experience in a senior, hands-on software engineering role
  • Strong hands-on experience with Node.js, building and maintaining production-grade backend applications
  • Strong proficiency in JavaScript and/or TypeScript
  • Practical experience designing, deploying and maintaining applications on AWS
  • Solid backend engineering skills, including API development, system integration and software architecture
  • Experience with databases, data modelling, automated testing, CI/CD and Git
  • AI-native development workflow, with daily use of Claude Code, Cursor, GitHub Copilot or similar tools
  • Experience using AI agents across the whole SDLC: planning, implementation, debugging, refactoring, testing and delivery
  • Ability to review, debug and secure code, including AI-generated code
  • Proven ability to work independently, own delivery and make sound technical decisions
  • Availability to work UK business hours
  • Languages: Fluent English, written and spoken (mandatory)

NICE TO HAVE (Preferred)

  • Experience in fintech, payments, fraud, credit or other regulated environments
  • Experience integrating third-party SaaS platforms and external APIs
  • Experience with cloud-native architectures, distributed systems and production operations

Compensation: €2,600 – €3,500/month net, depending on experience and seniority level.

Why HumanIT people stay (4.4 Glassdoor, 89% recommend)

  • 15th month salary
  • Health insurance covering your family
  • Birthday off
  • Mobility program for digital nomads
  • Real work-life balance

Full benefits: https://www.humanit.pt/careers/#perks

What it’s really like: https://www.humanit.pt/careers/#work-at

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