Integration Engineer for a Sustainability SaaS
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.
What you will do
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.
What we are looking for
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.
Nice to have
Experience working with integration platforms or middleware tools
Experience integrating ERP, PLM, PIM or other enterprise systems
How we work
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.
- Department
- Software Development
- Locations
- Helsinki HQ, Europe
- Remote status
- Fully Remote
How do we do this
We train, equip and support the makers of a zero-carbon future to tackle low-carbon design, planning, manufacturing, and procurement using life-cycle assessment to achieve zero.
This is how we do it:
- We train everyone in the world to life-cycle assessment via One Click LCA Academy for free.
- We provide software tools to decarbonize any project or product anywhere in the world.
- We create free resources and policy tools to power all the makers of zero-carbon future.
- We aim to power one million users by 2035.
How we live our purpose in our work
Maximizing our decarbonization impacts
- We’re training tens of thousands of people for free annually via One Click LCA Academy.
- We provide One Click LCA Planetary, a free embodied carbon software for everyone.
- We author free policy papers and best practice guidelines for governments and businesses.
- Supporting decarbonization outside our direct business
- We invested over 150 000 EUR in the creation of a surplus construction materials marketplace business to reduce site wastage and advanced regulations supporting this activity.
- We have invested 150 000 EUR in the construction of new primary wind power in Finland.
- We donate annually to a number of sustainability NGOs in line with our mission.
Minimizing our internal carbon impacts
- We’re a proud signatory of the World Green Building Council Net Zero commitment and shall achieve zero carbon facilities by 2030.
- We’ve invested in primary wind power generation capacity to power our entire operations.
- We minimize travel emissions by supporting remote work and encouraging public transport.
- We do not serve meat in any company events or dinners and use plant-based milk.
- We operate a paperless business.
Company culture
We have a very supportive, highly expert, and friendly team of colleagues.
We leave staff a great deal of autonomy & freedom; you can get done what needs to get done.
We have a low hierarchy and support an open flow of information.
Our team is highly international and represents well over 40 nationalities.
We work on the same mission together with our customers to create a zero-carbon future.
Join a supportive, effective and mission-oriented team
Work with cutting edge tools and a team of world-class professionals and leading organisations to solve one of the world`s biggest challenges - decarbonizing buildings and construction, responsible for 40 % of global carbon emissions.
About One Click LCA
One Click LCA is a Helsinki-based tech company decarbonizing construction and manufacturing with world-leading, easy-to-use, and automated life-cycle assessment (LCA) to calculate and reduce the environmental impacts of building, infrastructure, and renovation projects — as well as construction and other manufactured products. It also enables manufacturers to generate and publish third-party verified EPDs and allows assessment of circularity, life-cycle cost, and soon also biodiversity.
One Click LCA is used in +170 countries. Its decarbonization platform includes a unique global database with +500,000 LCA datasets, and it supports +140 standards and certifications, including LEED, BREEAM, GRESB and other national regulations.
One Click LCA was founded in Finland in 2001 and has a team of +330 people on all continents.
Learn more at: www.oneclicklca.com