Software Engineer

About Ambio

Ambio is an AI-driven physical commodity trader on a mission to accelerate the transition to sustainable materials. This mission is progressing fast in our primary domain – recycled plastics.

We work closely with global brands and industrial manufacturers through the full procurement cycle, making sustainable materials an easy choice. The main product we’re building is Ambio Platform – a tool that our team of traders uses daily to run the full sales process and all the operations related to it.

We’re a Helsinki-based startup with 15 employees with offices in Helsinki, Berlin, and Stockholm, and funding from e.g. Lifeline Ventures and Speedinvest.

More information about Ambio: https://ambiomaterials.com/

Role

We're looking for a full stack software engineer (web) to join our product team and build the digital infrastructure that powers real-world trading and logistics. This role is a great fit for someone who is excited about startups and building with AI in the center. This is an on-site position in our Helsinki office.

What you'll do:

• Build and maintain full stack features across our React frontend and Node.js backend


• Work with our PostgreSQL database, including schema design, query optimization, and migrations


• Deploy and maintain cloud infrastructure on Google Cloud Platform using Terraform


• Design and implement AI agents and AI workflows that solve real user problems


• Help shape engineering standards as we grow


• Work closely with our commercial team to define and refine our feature set

Signs you would be a great fit for this role:

• Genuine interest to work at a fast growing startup with a high ambition level and to take real ownership in developing the product


• Ability to work across our full stack: Node.js, Typescript, React, PostgreSQL, Google Cloud Platform, Terraform, Github Actions – we don’t expect you to be an expert in everything but the nature of the work is more backend-leaning than frontend and we particularly appreciate expertise with Typescript


• Your ideal work day involves more than picking up tickets from a backlog and building them independently – you enjoy collaborating both with other developers and end users


• You are interested to work in a flexible, but mostly on-site team (office based in central Helsinki)


• Interest in AI-native development: LLM APIs, tool use, retrieval, agent architectures


• You care about code quality and moving fast and can find the right balance between the two

How we work:

• Every technical decision traces back to a real user problem and we hold ourselves to a high bar in every delivery that touches the customer


• We ship simple, learn fast, and improve continuously – getting to value quickly matters more than perfecting something in a vacuum


• You own your work end-to-end, from the first commit to the outcome it produces. We communicate proactively, step up across role boundaries when needed, and take responsibility for shared results, not just individual tasks


• We take the mission seriously, but we don't take ourselves too seriously. We hire for work ethic, curiosity, and attitude, not credentials


• No title or role is more important than the work itself. We approach each other and our craft with humility, empathy, and a constant drive to raise the bar and improve each day

Typical recruitment process:

1. Intro: get to know each other


2. Technical interview: practical interview through examples from real work


3. Culture interview: with the founders


4. Reference checks from your previous jobs


5. Closing: with your future team lead and/or one of the founders