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

HumanIT Digital Consulting · Portugal · €3k – €4k · posted today ago

engineering javascript remote jobs in portugal

Listing supplied by Himalayas. 101 Careers did not originate this post and applications are handled by the employer.

About this role

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)