Senior AI Engineer
Confidential
PresencialSenior
Portugal
Acerca del Puesto
Senior AI Engineer – Build AI agents for a fintech startup | Lisbon (on-site)
Want to take LLM agents from prototype to production in a product that real businesses trust with their finances? A fast-growing European fintech startup is building an AI-native accounting platform for SMEs, and is looking for a Senior AI Engineer to help build its core AI systems.
What you'll do
Design AI agents and workflows that use LLMs, tools and structured data to automate complex accounting tasks.
Make AI reliable in production by combining LLMs with deterministic logic, validation and human oversight.
Build evals, find failure modes, and improve accuracy, latency and cost.
Develop the APIs, integrations and long-running workflows behind the AI (Python, Django, PostgreSQL, GCP).
Help shape the company's AI architecture and engineering practices.
What we're looking for
Solid software engineering background building production systems (APIs, databases, distributed systems).
Hands-on experience shipping LLM applications: tool calling, agents or agentic workflows.
Know-how in testing and evaluating nondeterministic systems.
A pragmatic mindset: you know when AI fits and when traditional software is better.
Ownership from idea to production, and professional English.
No ML research or accounting background required.
Location and schedule
Lisbon, Portugal · In-office, 5 days a week · Full-time. Early-stage team, real impact, and an AI-first way of working. If you want to build AI that has to be right, apply now and our Time To Hire recruiting team will contact you.
Responsabilidades Clave
- Design and build AI agents and workflows using LLMs, tools, and structured data to automate complex accounting tasks.
- Make AI systems reliable in production by combining LLMs with deterministic logic, validation, and human oversight.
- Develop evaluation and testing practices, identify failure modes, and improve AI accuracy, latency, and cost.
- Build backend APIs, integrations, and long-running workflows connecting AI capabilities to financial processes.
- Help define how AI-powered systems are designed, monitored, tested, and evolved as the product grows.
- Own solutions from experimentation through production and collaborate with engineers and domain experts.
Cualificaciones Requeridas
- Strong software engineering fundamentals and experience building and maintaining production systems.
- Experience with APIs, databases, and distributed systems is preferred within the stated production-systems background.
- Hands-on experience building applications using LLMs, tool calling, or agentic workflows.
- Understanding of the challenges involved in taking LLM applications into production.
- Ability to test nondeterministic systems, measure their quality, and investigate failures.
- Pragmatic problem-solving skills, including knowing when to use AI versus traditional software.
- Ability to take problems from idea to production, make technical decisions, and collaborate with engineers and domain experts.
- Professional English.
Deseables
- Portuguese language skills.
- Experience with Python, Django, PostgreSQL, or Google Cloud Platform (GCP), which are part of the current technology stack.
¿Listo para Aplicar?
Toma nuestra entrevista de IA con Mia y haz match con este rol y muchos otros.
Detalles del Empleo
Modalidad
Presencial
Nivel de Experiencia
Senior
Ubicación
Portugal
Rango Salarial
US$6K – US$7K USD/mes