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Senior Backend Engineer
Tally
PresencialSenior
Lisbon, Portugal
Acerca del Puesto
Senior Backend Engineer (Python) – Lisbon, on-site
A fast-growing European fintech startup is building a next-generation accounting platform that helps small and medium-sized businesses spend less time on their finances and more time running their business. We combine AI with solid software engineering to automate financial workflows end to end, and we're looking for a Senior Backend Engineer who wants real ownership, from technical decisions to production.
What you'll do
Build end-to-end features: backend services, APIs and user-facing experiences.
Put AI to work in production: LLM-powered workflows combined with deterministic logic, validation and human oversight.
Design reliable, long-running workflows that handle failures gracefully and never lose track of their state.
Extract, process and reconcile data from invoices, receipts and bank transactions.
Help define the architecture, engineering practices and technical direction as the team grows.
What we're looking for
Solid experience designing, building and maintaining production systems: architecture, databases, APIs and distributed systems.
Strong Python for backend development. Django and PostgreSQL are a plus.
Pragmatism: knowing when to keep it simple and when to invest in robustness.
Ownership: you take problems from idea to production and work closely with technical and non-technical teammates.
Curiosity for AI engineering (LLMs, agentic workflows). Hands-on experience is a strong plus, not a requirement.
Professional English.
Why join
Early-stage product with real impact: your decisions shape the platform.
Modern stack: Python, Django, PostgreSQL, Google Cloud, React and LLMs, with a say in how it evolves.
A team that expects you to use AI tools to move faster and focus on quality over lines of code.
Competitive compensation.
Location
Lisbon, Portugal · On-site, 5 days a week · Full-time.
Sobre la Empresa
An early-stage European fintech startup building a modern accounting platform for small and medium-sized businesses. Its mission is to reduce the time business owners spend managing finances by combining AI with strong software engineering to handle financial workflows accurately and reliably.
Responsabilidades Clave
- Build end-to-end features across backend services, APIs, and user-facing experiences.
- Develop AI-powered workflows for accounting tasks, combining LLMs with deterministic logic, validation, and human oversight where needed.
- Design reliable systems for long-running workflows that handle failures gracefully and recover without losing track of prior activity.
- Extract, process, and reconcile information from invoices, receipts, bank transactions, and other financial documents.
- Help shape the platform architecture, development practices, and technical direction as the product and team grow.
- Take ownership of work from initial idea and technical decisions through production.
Cualificaciones Requeridas
- Strong engineering fundamentals and experience designing, building, and maintaining production systems.
- Solid understanding of architecture, databases, APIs, and distributed systems.
- Comfort building backend applications in Python.
- Pragmatic problem-solving skills, including balancing simplicity, robustness, speed, and maintainability.
- Ability to take problems from idea to production and make independent decisions.
- Ability to collaborate closely with technical and non-technical teammates.
- Professional English for daily work.
Deseables
- Experience with Django and PostgreSQL.
- Hands-on experience building software with LLMs or agentic workflows.
- Experience with Google Cloud Platform (GCP) and React.
- Experience with the technologies in the stated stack: Python, Django, PostgreSQL, GCP, LLMs, agentic workflows, and React.
Beneficios y Ventajas
- Opportunity to influence technical decisions and help shape the engineering foundations of an early-stage product.
- Broad ownership and the opportunity to work across multiple areas as the team grows.
- Opportunity to build production AI-powered accounting workflows.
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Detalles del Empleo
Modalidad
Presencial
Nivel de Experiencia
Senior
Ubicación
Lisbon, Portugal
Rango Salarial
A convenir