Know ATS Score
CV/Résumé Score
  • Expertini Resume Scoring: Our Semantic Matching Algorithm evaluates your CV/Résumé before you apply for this job role: Senior Full Stack JS Engineer (with Python experience).
Spain Jobs Expertini

Urgent! Senior Full Stack JS Engineer (with Python experience) Job Opening In Spain – Now Hiring NineTwoThree AI Studio

Senior Full Stack JS Engineer (with Python experience)



Job description

Why Join Us?

100% remote | Global team | ⏳ Full-time

Join a stable, long-term project that's been in continuous development for 5+ years.

The project offers consistent, meaningful work on a mature financial services platform.

Project overview

  • Insurance products (motor, life, property, major medical)
  • Loan management (vehicle, personal, mortgage, commercial)
  • Investment and annuity products
  • Digital client services and employee benefits
  • Real-time financial transactions and reporting
  • AI document processing

This is a production system processing real transactions for real customers, with established business processes and regulatory compliance requirements.

Why This Position is Different

  • ✅ Stable, Long-term Project : Same project for 5+ years, deep domain expertise
  • ✅ Mature Codebase : Well-structured, documented, with established patterns
  • ✅ Real Business Impact : Your code affects real financial transactions and client services
  • ✅ Technical Variety : Polyglot architecture (Node.js + Python / Django), multiple services
  • ✅ Professional Growth : Become an expert in financial services technology

What You'll Do

  • Maintain and enhance banking/lending features, payment processing, and compliance workflows
  • Work across our polyglot microservices architecture (Node.js/TypeScript and Python/Django)
  • Implement complex business logic for insurance products, loan origination, and investment services
  • Build real-time data processing systems using WebSockets and event-driven patterns
  • Integrate with third-party services (DocuSign, payment gateways, banking APIs)
  • Full-stack development from REST APIs to React frontends
  • Ensure transaction integrity and regulatory compliance
  • Collaborate with a stable team that knows the domain deeply

Requirements

Technical Requirements

  • 5+ years Full Stack development with both Node.js/TypeScript AND Python/Django
  • Strong React.js, Redux, and modern frontend development
  • PostgreSQL expertise including complex queries, transactions, migrations
  • Experience with both Knex/Objection.js (Node) and Django ORM
  • Microservices architecture experience
  • Real-time systems (WebSockets, Socket.io, Celery)
  • AWS and Docker experience
  • RESTful API design with JWT/OAuth authentication
  • Testing frameworks (Jest for Node.js, pytest for Python)
  • Financial or insurance systems experience is a plus
  • Strong English communication (B2-C1)
  • Overlap with Eastern USA timezone for meetings

Tech Stack

Backend

  • Node.js/TypeScript : Koa.js, Objection.js, Knex.js
  • Python : Django 4.2+, Django REST Framework, Celery
  • PostgreSQL, Redis

Frontend

  • React, Redux, Material-UI
  • TypeScript, Vite
  • Formik, Yup validation

Infrastructure

  • AWS (S3, EC2, RDS)
  • Docker, PM2, Gunicorn
  • Socket.io, WebSockets
  • DocuSign, Payment APIs
  • Jest, Supertest, pytest
  • Swagger/OpenAPI

Benefits

What We Offer

  • Long-term stable position on established project
  • 20 days PTO (25 after 3 years)
  • 10 sick days, national holidays, 2 company days
  • Well-being budget
  • Maternity/paternity leave
  • Professional development reimbursement
  • Hardware as needed
  • Stable, professional team environment

Process

Quick and efficient: HR screening → Technical discussion → Practical coding session → Offer

Apply now for a stable, long-term position on an established financial services platform.

#J-18808-Ljbffr


Required Skill Profession

Informática Y Tecnología



Your Complete Job Search Toolkit

✨ Smart • Intelligent • Private • Secure

Start Using Our Tools

Join thousands of professionals who've advanced their careers with our platform

Rate or Report This Job
If you feel this job is inaccurate or spam kindly report to us using below form.
Please Note: This is NOT a job application form.


    Unlock Your Senior Full Potential: Insight & Career Growth Guide