Senior Python/ AI Backend Developer

Senior Python/ AI Backend Developer
Lisboa
Lisboa, Lisboa, Portugal

We are looking for an experienced Senior Python / AI Backend Developer to join our AI development team. You will build and evolve the backend infrastructure powering a suite of specialized AI assistants (e. g. , helpdesk support,
- office operations, and HR solutions).

This role requires strong backend engineering skills,
- on experience with Python frameworks, and genuine interest in AI-driven systems .

Responsibilities:

• Design, develop, and maintain robust, scalable backend services for AI assistants;
• Build and manage secure, efficient RESTful APIs for data integration;
• Ensure performance, reliability, observability, and data security across services;
• Collaborate closely with
  - end teams to deliver consistent user experiences;
• Integrate AI-driven capabilities to enable automation and intelligent support;
• Participate in agile practices (sprint planning, code reviews, retrospectives, continuous improvement);
• Communicate technical concepts clearly to business and
  - technical stakeholders.

Required Skills & Experience

• 3+ years developing backend web applications in Python;
• Strong experience with Fast
  API and REST API development;
• Solid understanding of backend architecture, databases, and
  - side logic;
• Experience working in an AI-focused development environment;
• Familiarity with AI integration frameworks such as Lang
  Chain and Lang
  Graph;
• Proficiency with Git;
• Growth mindset and willingness to learn new AI technologies;
• Ability to explain technical topics to
  - technical audiences;
• English level B1 or higher.

Technical Skills Matrix (Expected Level)

• Python — Advanced
• RESTful APIs — Advanced
• Fast
  API — Advanced
• Git — Advanced
• Docker — Intermediate
• Kubernetes — Intermediate
• Postgre
  SQL — Intermediate
• AI Integration Frameworks (Lang
  Chain, Lang
  Graph) — Intermediate
• Agile Development Practices — Intermediate

Nice to Have

• Familiarity with LLMs (Large Language Models)
• Cloud experience, preferably Microsoft Azure
• Basic understanding of machine learning / AI concepts
• Experience with Docker and Kubernetes
• Knowledge of Postgre
  SQL
• Previous experience in the banking industry (2+ years is a plus)