Senior Node.js Backend Developer (f/m/d)

Published on

March 11, 2022

Full time (38.5h/week)
Vienna, Austria

We are an award winning team based in Vienna (best quality of life) rated as one of the top 5 Materials Startups creating Decarbonization Solutions in the world. Our award-winning software platform empowers its users to replace today's mandatory paper-based inspection certificates such as for steel, metals and plastics with tamper-proof machine readable records. This is how quality and sustainability can be traced within a verifiable chain of custody. In the manufacturing industry like automotive, engineering, construction and packaging, the users of our solution are companies in all stages of the supply chain. They use our solution to embrace responsible sourcing and emissions tracking but also to save time and manual work, and create better products for their customers. 

To achieve this, we are putting together best of breed Blockchain technology in collaboration with the industry leader Riddle&Code and 150 years of steel industry experience of AluKönigStahl. Our clients are in all stages of the supply chain: from the raw material producers to the processor and up to OEMs and notified bodies.

Why you should work with us

As previously mentioned, we are an award winning team based in Vienna (best quality of life) rated as one of the top 5 Materials Startups creating Decarbonization Solutions in the world. Yet we are still at an early distribution stage and take inspiration from everyone willing to influence our product's shape and welcome diversities in opinion.

Technically, we are :
– working with a modern tech stack
– pushing for high code quality standards
– offering (and expecting) a large degree of responsibility and autonomy on how to get the job done

Your role

As a backend developer, you will work as a part of a collaborative team on our platform, bringing together top-of-the-notch Blockchain technology, cryptographic hardware, mobile devices, and many other parts with the physical materials, including steel.

We are looking for a team player possessing strong analytical as well as technical skills and who is also able to communicate the logic behind technical decisions to non-tech stakeholders. They must be comfortable working in an agile environment and have the ability to “question the status quo” and “take the wheel” when necessary.

Your responsibilities

– Implement new features on in our micro services
– Work closely with project managers, developers, and sales and marketing professionals
– Analyze user and integrator requirements
– Create and maintain software documentation
– Maintain and enhance existing web applications
– Test functionalities and endpoints with focus on automation

Your qualifications

– At least 2+ years of relevant experience developing backend applications with Node.JS / TypeScript
– Proven and demonstrable experience designing and implementing REST API
– Good knowledge of SQL databases
– Experience with CI / CD pipelines
– Experience with SaaS products, developer tools, and data-driven visualization is really appreciated
– Familiarity with node API frameworks
– Familiarity with Blockchain technology is preferable, willingness to dive into it a must
– Professional written and spoken English skills


– Be part of the change: your opinion is meaningful!
– Flexible working hours with the possibility to work remote
– Office located in ICON Tower (Vienna)
– Flat hierarchy and great culture
– Compensation that corresponds to your personal qualification*

Hiring process

– Send us your application to jobs@s1seven.com (Subject: Backend Developer, contact person Irina Goronja) with your CV/resume with a link to the project (source code) you'd like to share with us.
– If your profile catches our attention, we will reach out to arrange a first round of interviews. Here we will shortly introduce our company and team and get a chance to get to know you better.
– If we both decide to move forward, the second interview is a technical one. As for senior candidates it’s a design assignment followed by pair programming session. For more junior candidates, it is a pair programming session.
– In the third and last round of interviews, you will have a chat with our CEO.

We are looking forward to hearing from you!

***Applicants give their implicit consent that their personal data gets stored and processed for recruitment purposes only.***

*) The law obliges us to state gross salary guidelines of the collective agreement for this position, so at least € 3186 p.m. to € 3730 for 38.5 hrs/wk for ST2 rating or at least € 2635 p.m. to € 3190 p.m. for 38.5 hrs/wk for ST1 rating. We strive to offer compensation that corresponds to your personal qualification, your experience and in line with the current market.

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