Senior Full-stack Engineer (Frontend Specialisation) - Team AI Lisboa

At Pleo, we’re on a mission to revolutionise the way businesses manage company spending. No more outdated processes, clunky spreadsheets, or frustrating delays - we believe spend management should be seamless, empowering, and surprisingly effective for finance teams and employees alike. We’re creating tools that promote autonomy, foster trust, and let businesses focus on what truly matters.

Our culture is built on transparency, collaboration, and a deep commitment to innovation – which is reflected in our spending solution. At Pleo, you’ll join a passionate team shaping the future of work, all while having some fun along the way.

The Role

At Pleo, our Senior Engineer plays a pivotal role in driving technical excellence within teams. You’ll work closely within the AI Enablement team, spending significant time coding and solving problems, bringing intelligence through large language models, machine learning, and related technologies to improve features and products across the Pleo platform. You will build technology that enables other product teams to apply large language models to their problem spaces to better serve our customers.

As a Senior Engineer, you will take ownership of key projects and components, mentor junior engineers, and foster a culture of collaboration. You’ll improve the scalability, performance, and robustness of our platform and collaborate with product teams to deliver impactful solutions.

We’re looking for people who others can look up to for technical expertise and leadership. You’ll help shape the technical direction for the team, ensuring best practices in code and culture.

Join our team of Pleo pioneers who thrive on scaling at pace and prioritise our customers’ needs. Help us solve complex problems with innovative solutions and a touch of magic. No expense reports. No time wasted.

What you’ll be doing

• Design, develop, and maintain scalable AI-powered products and features. There is product engineering at the heart of this. You’ll join customer calls, ideate on customer problems, come up with solutions, build and ship this to customers, and learn and iterate.
• Work closely with other product and data teams to integrate AI capabilities into our platform.
• Build and optimize robust data pipelines to support AI-driven features.
• Develop and improve the scalability, performance, and reliability of our
  - end infrastructure.
• Collaborate with product managers, designers, and other engineers to define, architect, and build new
  - facing features.
• Mentor junior engineers and contribute to code reviews, architecture discussions, and technical roadmap planning.
• Ensure seamless integration between
  - end and
  - end systems and other components of the platform.

What you bring

• 5+ years of experience building software in a product team.
• Solid experience with
  - end technologies and their interaction with
  - end systems (React, Java
  Script/Type
  Script preferred but not required).
• Experience in
  - end technologies such as Node. js, Java, or Kotlin.
• Experience with relational databases such as Postgre
  SQL or My
  SQL.
• Experience with distributed systems and
  - services architecture.
• Interest or experience in AI: Application of LLMs, RAG, embeddings, vector databases, prompting, and machine learning.

Who you’ll be working with and reporting to

You’ll report to our Engineering Manager and work closely with teams in Spend Decisions. Our team of six is highly collaborative and dedicated to building AI-powered features starting with using LLMs to catch expenses that are
-
- policy. You’ll also have the chance to partner with teams across Spend Insights, Platform AI, Users & Controls, etc. to ensure success.

How you’ll develop in this role

In your first three months at Pleo, you’ll:

• Lead one of the many features we have planned for the AI powered
  -
  - policy checks for expenses and in so doing reduce the time it takes to review and bookkeep.
• Collaborate with the many teams across Spend Decisions and Spend Insight to improve our automation offerings with AI.
• Grow your skills in AI product engineering and feature delivery, taking on new challenges as the company continues to scale.

We’re committed to helping you develop your career, whether that means taking on bigger projects, stepping into leadership, or acquiring new skills in AI engineering.

Check out our Engineering Hiring Blog Post to get an
- depth overview of our hiring process and what to expect. Enjoy the reading!

Salary Range

The annual salary for this position varies based on your location:

• United Kingdom: £80, 400 - £85, 500
• Spain/Portugal: 87, 100€ - 92, 500€

We’re happy to share more about our approach to pay and this range during your first call with us!

Show me the benefits!

• Your own Pleo card (no more
  -
  - pocket spending!)
• Lunch is on us for your work days - catered meals or a lunch allowance based on your local office
• Comprehensive private healthcare - depending on your location, coverage options include Vitality, Alan or Médis
• We offer 25 days of holiday + your public holidays
• For our Team, we offer both hybrid and fully remote working options
• Option to purchase 5 additional days of holiday through a salary sacrifice
• We use Mynd
  Up to give our employees access to free mental health and
  - being support
• Paid parental leave - we want to make sure that
  - 're supportive of families and help you feel that you
  - 't have to compromise your family due to work

Why join us?

Working at Pleo means you’re working on something very exciting: the future of work. Our mission is to help every company go beyond the books. Pleo itself means “more than you’d expect”, and it’s been the secret to our success over the last 8 years. So it’s only fitting that we’d pass this philosophy onto our customers to help them make the most of their finances.

We think company spending should be delegated to all employees and teams, automated as much as possible, and should drive a culture of responsible spending. Finance teams shouldn’t be siloed from the rest of the organisation – they should work in unity with marketing, sales, IT and everyone else.

Speaking of working in unity, our values tell the story of how we work at Pleo. We have four core values: champion the customer, succeed as a team, make it happen, and build to scale. Today we are a 850+ team, from over 100 nations, with offices in Copenhagen, London, Stockholm, Berlin, Madrid, Montreal and Lisbon, plus many remote roles. We’ll help you set up the best remote setup if you don’t work in the office.

About your application

• Please submit your application in English; it’s our company language so you’ll be speaking lots of it if you join
• We treat all candidates equally: If you are interested please apply through our application system — any correspondence should come from there. Our support isn’t able to pass on calls or emails, to ensure a smooth and fair candidate experience
• We’re on a mission to make everyone feel valued at work. Our team reflects the diversity of the world around us and we encourage people from all backgrounds to apply
• When you submit an application we process your personal data as a data processor. Find out more about how your data is used in the FAQs section at the bottom of our jobs page.