AI Application Engineer for a Sustainability SaaS

We are looking for a Senior AI Application Engineer to join our team.

Your responsibility will be to analyse, design and implement production-grade AI systems and agent workflows that enhance our SaaS platform. In particular, you will design and implement AI agents, AI copilots, and intelligent automation that improve the customer experience and support environmental impact analysis.

You will work closely with Product Managers and software developers to translate ideas and requirements into robust technical solutions integrated into the One Click LCA platform. Your work will include developing LLM-based agents, AI-assisted modelling tools, and data extraction capabilities that help users analyse and improve environmental performance.

You will play a key role in shaping how AI capabilities are designed and implemented across the platform.

In this role, you will also promote best software development practices across the team, support colleagues in improving their technical approach, and help resolve complex technical challenges. Your contribution will help ensure that our solutions are scalable, maintainable, and aligned with the overall platform architecture.

Why One Click LCA

One Click LCA is the world-leading construction and manufacturing Life Cycle Assessment (LCA) platform, operated as SaaS. The platform is used by thousands of professionals globally to analyse the environmental impacts of buildings, materials, and products.

Here, you will join a supportive, effective, and mission-oriented team in a flexible and friendly work environment. You will work with cutting-edge AI technologies and real sustainability data alongside world-class professionals and leading organisations.

Together, we are solving one of the world's biggest challenges — decarbonising buildings and construction. We help businesses create value by using science-based and robust metrics to quantify and improve environmental performance.

Our platform contains one of the world’s largest datasets on environmental performance in construction and manufacturing, creating unique opportunities to build impactful AI applications.

This full-time, permanent position is available on a hybrid basis for candidates based in Helsinki or on a remote basis for candidates based in Europe.

What you need:

• Minimum 5 years of experience working with AI-related projects and systems
  Experience building AI agents or LLM-driven workflows, for example, using frameworks such as LangGraph or LangChain

• Strong understanding of modern LLMs, including prompting strategies, evaluation methods, and model selection

• Experience implementing AI copilots, agent workflows, or retrieval-based AI systems

• Ability to fine-tune purpose-specific models or select the most appropriate approach or algorithm for the problem at hand

• Strong Python programming skills required to build production-grade AI solutions

• Understanding of performance, maintenance, and security considerations when deploying AI systems

• Experience integrating AI solutions into real-world software products

• Master’s degree in a relevant field such as Computer Science, AI, or Machine Learning

• Good communication skills, as you will collaborate closely with product managers, engineers, and other stakeholders

• Fluent in written and spoken English, as it is our working language

• Knowledge of AWS cloud infrastructure is beneficial

What we offer:

• Work that contributes to a more sustainable future

• Substantial freedom – with no fixed hours and remote working supported

• Technical challenges, substantial responsibility and the chance to see the results of your work

• A dynamic, friendly, motivated and diverse team of professionals

• Competitive compensation, team and company events

Interested?

We are eagerly waiting for your application until 5 April 2026 . Applications are reviewed upon receipt, so please apply promptly to be considered.