Full Stack Engineer – E‑Invoicing Platform

About the role

We are seeking an experienced Full Stack Engineer to design, develop, and operate an in‑house e‑invoicing platform from concept to production. The role combines backend, frontend, and cloud responsibilities in a fast‑moving environment.

Key responsibilities

• Design and implement backend services using Python 3.12, FastAPI, SQLAlchemy and Alembic.
• Build responsive user interfaces with React and TypeScript.
• Manage PostgreSQL databases, including migrations, indexing, query optimisation and row‑level security.
• Develop and maintain Temporal workers and workflows.
• Apply Vibe Coding / Agentic IDE practices throughout the development lifecycle.
• Handle XML processing (XSD, Schematron, XPath, canonicalisation, digital signatures) and integrate PKI/XAdES signing mechanisms.
• Containerise applications with Docker and deploy on AWS services (ECS, RDS, S3, KMS, ALB).
• Maintain CI/CD pipelines using Git and GitHub Actions.

Required profile

• 5+ years of hands‑on full‑stack development delivering production applications.
• Strong expertise in Python 3.12, FastAPI, SQLAlchemy and Alembic.
• Proven experience with React and TypeScript.
• Deep knowledge of PostgreSQL, including migrations and performance tuning.
• Practical experience with Temporal workflows.
• Mandatory experience with Vibe Coding / Agentic IDE.
• Solid understanding of XML standards and digital‑signature technologies; experience with XAdES, PKI, X.509, CSR and KMS‑backed signing is a plus.
• Proficiency with Docker and AWS (ECS, RDS, S3, KMS, ALB).
• Good command of Git and GitHub Actions.

Required skills

• Python 3.12
• FastAPI
• SQLAlchemy
• Alembic
• React
• TypeScript
• PostgreSQL
• Temporal
• Vibe Coding / Agentic IDE
• XML, XSD, Schematron, XPath, canonicalisation, digital signatures
• XAdES, PKI, X.509, CSR, KMS‑backed signing
• Docker
• AWS ECS, RDS, S3, KMS, ALB
• Git
• GitHub Actions