Permanent employment
Master (EQF 7)
Apply before:
Hours p/wk:


About us

Roseman Labs is a fast-growing deep tech company, specialized in cryptographic techniques to provide unprecedented privacy guarantees. Our mission is to transform how organizations handle and work together on sensitive data. With a diverse team of cryptographers, developers and strategy experts, we work passionately to drive innovation and positive change for customers across health care, public sector and energy.


Our product: The Virtual Data Lake (VDL) software enables parties to perform joint data analyses without exposing the underlying data. We differentiate with uncompromising privacy, rapid deployment, and accessible software -so that our customers can focus on generating insights and value from the data.

Our culture: Integrity and honesty is central to all we do as a team. We are obsessed with quality, open to feedback and eager to learn. We celebrate diversity and accommodate for individual preferences. Where, how, and when you work is up to you.


The Role

The core of our Virtual Data Lake uses techniques from modern cryptography to enable unique privacy features. However, the core would be worthless without an intuitive client-facing application – and that’s where you come in! You will play a pivotal role in designing and developing new features in our customer-facing applications as well as designing and building efficient back-ends and smart API-layers in-between. This is an all-round engineering position, meaning that the challenges you solve will engage your front- and back-end development skills, as well as your UI-design skills.


Your responsibilities include:

  • Designing web app architecture and the user interactions;
  • Developing back-ends and middleware, including RESTful APIs and documentation;
  • Creating database models and designing how this data is presented to the user;
  • Developing our web apps with a focus on cross-platform and responsiveness;
  • Close cooperation with the cryptography and customer deployment teams;
  • Design, develop and implement application solutions that make our products more intuitive and more effective for our users, while not compromising on the strong security and privacy guarantees;
  • Working in sprints with an agile methodology in close alignment with the scrum team and the product owners;
  • Proactively identify opportunities and solutions for improvement of the application code;
  • Design friendly and intuitive UI and APIs (customers typically work in healthcare, law enforcement, energy, cyber security). 

We are looking for a colleague who can identify with the following description:

  • University degree (MSc) in a field that is relevant for the description below, with a curious, creative, and analytical mindset;
  • Experience in projects that involve databases and algorithms, but also well-versed with user-facing technologies;
  • The ability to translate requirements and mockups into fully functioning web-applications, taking care of both the front- and back-end;
  • Strong proficiency in web development with experience in HTML, CSS, and JavaScript languages. Experience in front-end frameworks such as Vue or React;
  • Experience in designing and building RESTful APIs, especially in Python;
  • Prior experience in designing UI/UX is a plus;
  • Hands-on experience with deploying on Linux environments is a plus (being comfortable on the command line);
  • You have an international orientation and experience. You speak English at a professional level;
  • You are hands-on, proactive, organized, and structured. You have a strong eye for quality;
  • You are creative and not afraid to step outside of your comfort zone. You can quickly respond to changes in the environment and deliver short-cyclical value in an Agile way;
  • You enjoy working in a small team of a fast-growing start-up with many opportunities but also many uncertainties.

We offer attractive employment conditions that suit a start-up in this phase; participation is an option. We value a high-performance culture built around our core values: customer, quality, and team. Where, how, and when you work is up to you.


Applying for this role

  • Currently, this position is open for candidates with an EU work permit that are based in The Netherlands or are willing to move there;
  • When applying for this role, please include links that highlight your relevant experience, such as GitHub, Stack Overflow, or portfolio websites;

Does this sound like your dream job but you don’t tick all the boxes? Please do reach out, we are very keen to get to know you!