Senior Python Engineer (ML/AI services) Lisboa

Workato transforms technology complexity into business opportunity. As the leader in enterprise orchestration, Workato helps businesses globally streamline operations by connecting data, processes, applications, and experiences. Its AI-powered platform enables teams to navigate complex workflows in
- time, driving efficiency and agility.

Trusted by a community of 400, 000 global customers, Workato empowers organizations of every size to unlock new value and lead in today’s
- changing world. Learn how Workato helps businesses of all sizes achieve more at workato.com.

Ultimately, Workato believes in fostering a flexible,
- oriented culture that empowers everyone to take full ownership of their roles. We are driven by innovation and looking for team players who want to actively build our company.

But, we also believe in balancing productivity with
- care. That’s why we offer all of our employees a vibrant and dynamic work environment along with a multitude of benefits they can enjoy inside and outside of their work lives.

If this sounds right up your alley, please submit an application. We look forward to getting to know you!

Responsibilities

We are seeking an exceptional Senior Software Engineer to join our EMEA team and build new ML/AI services. You will collaborate closely with product and engineering to create scalable and intuitive services. This role requires a high technical standard.

• Design, build, and enhance AI services and APIs powering our Workato products, leveraging LLMs and custom ML models.
• Develop
  - architected, testable, and efficient Python code production services and experimentations.
• Implement and improve validation, monitoring, and observability for
  - grade solutions.
• Drive the full development lifecycle: from ideation and architecture to deployment and continuous improvement.
• Continuously evaluate and optimize existing implementations for performance, scalability, and usability.
• Identify and resolve bottlenecks, bugs, and technical challenges in a
  - paced, iterative environment.
• Conduct code reviews and mentor team members to uphold high engineering standards.
• Production deployment & integration. Create and maintain APIs and microservices for model serving; build and maintain middleware layers integrating LLMs with existing systems.

Requirements

Bachelor’s or Master’s degree in Computer Science, Engineering, Information Systems, or equivalent industry experience.

5+ years of experience as an ML Engineer, Data Scientist, or similar role.

Strong Python programming skills and
- on experience with NLP and LLM models.

Proven track record of deploying and maintaining ML services in production environments.

Solid understanding of network protocols, API design.

Experience with relational and
- relational databases.

LLMops/MLops experience is a strong plus.

• Experience building or supporting developer platforms, APIs is highly desirable.

Preferred skills

Knowledge of agentic architectures and multi‑agent systems; experience building chat‑based agents or copilots.

Experience with open‑source LLM frameworks (e. g. , Lang
Chain, Llama
Index) and vector databases.

Familiarity with metrics logging and monitoring stacks (Prometheus, ELK), and observability best‑practices.

Soft Skills / Personal Characteristics

Strong written and spoken English; ability to communicate complex ideas clearly to technical and non‑technical stakeholders.

Collaborative team player who takes initiative and thrives in a dynamic startup environment.

Adaptable mindset with willingness to switch tools or languages when needed.

Analytical thinker with a focus on continuous improvement and innovation.

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Demographic and Self-Identification Questions (EMEA)

Workato fosters an environment where diversity is celebrated and employees feel a sense of community and belonging. Our ability to win together as a team and to better each other is strengthened through our global perspectives, cultures, and identities. Your responses to the following questions are used (in aggregate only) for anonymized reporting related to our diversity and inclusion efforts. Your responses will not be associated with your specific application, will not be shared with the hiring team, and will not in any way be used in the hiring decision.

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