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one • fıve • Hybrid

Machine Learning Engineer, Applied AI

Employment type:  Full time

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top 3 scores:
94%

Hours flexibility

94%

Role modelling

90%

Location flexibility

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Job Description

The Role

Here at one • fıve, Engineering, Machine Learning and Material Science play a vital role in our data-driven sustainable packaging development process. As we continue to grow, we’re looking for someone responsible for developing our novel Packaging Development AI Engine

As an experienced Machine Learning Engineer in Applied AI, you will use your skills to develop and integrate new AI and ML approaches to power our internal Material Science Platform.

This role ideally requires a strong scientific background or experience with scientific data, as you’ll be developing machine learning and LLM systems based on materials engineering, chemistry, and physics-derived knowledge.

You’ll also be designing AI agents that emulate scientific reasoning. Domain expertise is essential for accurately developing, interpreting, and managing these systems. In a startup environment, you'll need to work independently, applying advanced ML techniques to complex, scientifically-sourced data to ensure robust performance.

This role reports to Marta Rodriguez, Head of Software and Data, and has as key stakeholders other data and software engineers, as well as team members throughout the company.

Given the remote first nature of our team, this role can be based anywhere but willing to work approx UTC/UTC+2 core hours, in order to overlap with the bulk of our European based team.

How you'll help build one•fıve

Develop our core AI Engine

  • You’ll bring state-of-the-art AI research from concept to implementation to create AI-driven applications with a direct impact on our packaging development processes.

  • You’ll work closely with stakeholders and other engineers to evaluate and optimize our systems for performance and accuracy and ensure they are production-ready.

Coordinate ML requirements with stakeholders

  • Surface requirements to other teams (data engineers, domain experts and software engineers) to ensure data harvesting and processing aligns with our AI development needs

Be our ML champion

  • You’ll lead our AI technical strategy by staying on top of the latest developments in machine learning and AI

Who you are

  • Extensive hands-on experience of developing and implementing advanced machine learning or AI systems. Experience with Deep Learning or LLMs is preferred

  • Experience spearheading ML and data-heavy projects

  • Experience bringing machine learning applications to production (end to end development)

  • Strong programming skills in Python, familiarity with libraries and tools such as langchain/haystack, pytorch/tensorflow, spancy/nltk, scikit-learn, MLflow, GCP, VertexAI, etc.

  • Experience with vector databases and knowledge graph systems is a plus

  • Experience working with complex, scientific/chemistry-like data and metadata, such as lab generated measurements and experimental conditions, industrial trial data, etc.

  • Strong problem-solving skills and ability to work independently in a remote set up

  • Ability to work independently and proven stakeholder management

  • Experience implementing and coordinating with domain experts in multifunctional environments

  • Fluency in English, as this is our working language

one•fıve values

  • Duty to care: care for yourself, your colleagues, your work, our offices, and ultimately, our planet

  • Create with intent: work with a goal in mind. Ask yourself what you are trying to achieve and constantly evaluate whether your current path is the best way to achieve this goal

  • Acknowledge the process: we celebrate our failures and successes together, and keep iterating to improve

  • Transparency: all knowledge is accessible to everyone

Hiring Process

We want you to know what to expect out of your candidate experience with us and make this as much as possible a two sided process, allowing you to get to know us as well.


Once submitted, your CV will be reviewed by the People team, and shortlisted for interviews.

Everyone will be contacted to find out the outcome of their application.


We have four interview stages:

  1. Introduction Google Hangouts call with our Talent Manager - to share more about one.five and how we work & find out how that meets your experience and expectations of the role.

  2. Technical interview with Head of Software & Data and another senior stakeholder - to dig into the day to day of the role more and answer any questions you may have for us.

  3. Present a short demo of an ML project followed by brief Q&A.

  4. Final introduction to key stakeholders in the business to better build your understanding of your future function, as well as discuss our core values.

Diversity & Inclusion

We are very proud of the culture we have built to support diversity & inclusion and will do everything we can to continue to be an inclusive company where all team members are comfortable, supported and empowered to succeed.

We seek to ensure that all employees are afforded equal opportunities and treatment, irrespective of any qualifier, in all aspects of recruitment, employment, training and determination of benefits.

For sake of clarity, all team members and candidates will receive equal treatment regardless of age, disability, gender reassignment, marital or civil partner status, pregnancy or maternity, race, colour, nationality, ethnic or national origin, religion or belief, sex or sexual orientation.

If you require any accommodations for the interview process, please include them in your application or in scheduling requests for a first call.

Company benefits

Unlimited annual leave
Co-working space allowance – Partnership with Desana, workspace when & where you need it
Mental health platform access – Oliva
Work from anywhere scheme
Personal development budgets – €250/year to spend on your own & additional budget for conferences & courses
Work from home budget – €500 to set up your home office
Share options
Company wide holidays/offsites
Open to part-time employees
Dog friendly office
Teambuilding days
Skilled worker visas
Fully stocked snack cupboard
In office catering

We asked employees of one • fıve what it's like to work there, and this is what they told us.

Location flexibility
90%
Employees are very happy with their working location freedom
Hours flexibility
94%
Employees are very happy with the flexibility in the hours they work
Benefits
80%
Employees are largely happy with the benefits their company offers
Work-life balance
77%
Employees feel that they can switch off quite easily from work
Role modelling
94%
Employees feel that flexible working is part of the culture
Autonomy
88%
Employees feel they have complete autonomy over getting their work done

Additional employee ratings
(these do not contribute to the FlexScore®)

Diversity
88%
Employees feel that the diversity, and the efforts to improve and maintain it, are great
Inclusion
78%
Employees feel that the culture supports equity and inclusivity well
Culture
84%
Employees feel like it is a really great environment to work in
Mission
84%
Employees feel very excited about and aligned with the company mission
Salary
71%
Employees feel that their salary is good and matches the value they bring

Working at one • fıve

Company employees

31

Gender diversity (male:female)

58:42

Funding levels

€10M

Currently Hiring Countries

Germany

Office Locations

Awards & Achievements

Most flexible companies

Most flexible companies

Flexa100 2024
2nd – Charity & Tech For Good

2nd – Charity & Tech For Good

Industry awards 2023