One Click LCA is looking for an Integration Engineer to join our fast-growing team, working to decarbonise buildings and construction, currently responsible for around 40% of global carbon emissions.
Why One Click LCA
One Click LCA is a fast-growing and profitable Software-as-a-Service (SaaS) growth company powering the makers of a zero-carbon future. With customers in 170+ countries and a team of international professionals, we make LCA and Environmental Product Declaration (EPD) easy and affordable for the construction industry. It integrates with all the leading design software packages and all environmental databases in the industry and provides over 60 modules for low-carbon design and carbon transparency.
You will join a supportive, effective and mission-oriented team in a flexible, friendly work environment. Join us and help us deliver exceptional automated sustainability solutions to our clients!
This full-time, permanent role can be performed remotely and is open to candidates based in Europe or as a hybrid role for candidates based in Finland.
Design and build B2B SaaS integrations between complex enterprise systems and our sustainability platform
Turn messy, inconsistent data into structured, validated, regulation-ready models
Build reusable connector frameworks, not one-off integrations
Design two-way sync flows that handle scale, failure and change effectively
Work directly with product, data, customers and partners to shape how integrations should work, not just how they are implemented
Use AI tools as part of your daily workflow to move faster, test mappings, validate schemas and explore edge cases
Like most real platforms, parts of our integration layer have evolved over time. Some work involves improving and modernizing existing integrations while building new ones the right way.
You have designed and shipped integrations in B2B SaaS that are used by real customers.
You are comfortable modelling complex domains and turning messy real-world data into structured systems.
You understand distributed system realities such as idempotency, retries, partial failure and two-way sync.
You have implemented oauth2 or similar enterprise authentication flows.
You think in platforms and reusable frameworks rather than one-off projects.
You default to automation and AI-enabled workflows and are comfortable working in ambiguity to shape solutions.
Experience working with integration platforms or middleware tools
Experience integrating ERP, PLM, PIM or other enterprise systems
Small, cross-functional teams
High ownership
Fast iterations
Build → test → ship → learn
Interested?
We are eager to receive your application by 19 April 2026 Applications are reviewed on reception, so please apply swiftly.
Used in 170+ countries, One Click LCA is the leading end-to-end sustainability platform for construction and manufacturing.
The AI-powered software decarbonizes and drives sustainability across the construction value chain with scientific, easy-to-use, automated life-cycle assessment (LCA) and environmental product declarations (EPDs) to calculate and reduce the environmental impacts of building, infrastructure, and renovation projects and products. The platform also allows assessment of circularity, life-cycle cost, and biodiversity. One Click LCA is used by blue-chip enterprises like AECOM, Arcadis, Foster+Partners, WSP, ArcelorMittal, Geberit, and Saint-Gobain, among others.
It offers a unique global database with +300,000 LCA datasets; supports +80 standards and certifications, including LEED, BREEAM, GRESB and other national regulations; and seamlessly integrates with +20 of the most widely used BIM software tools, including Autodesk Revit®, Tekla Structures® and Bentley iTwin®.
One Click LCA was founded in Helsinki, Finland in 2001, with a team of +200 people on all continents. Learn more at: oneclicklca.com
