Hybrid work from Cluj-Napoca:

  • πŸ‡·πŸ‡΄ Romania

Junior Blockchain Engineer (m/f/d)

We love challenges. We love to build. We love to make things happen.

At JUSTROCKET we build products, we invest in scalable ideas, we rethink core businesses and processes, we co-found new ventures. And to make all this happen we build teams – but not simply ordinary teams. We build self-organizing, cross-functional teams by empowering its members to take responsibility and ownership in the product building process. Paired with powerful tools as well as proven and truly followed processes we succeed – as a team.

On top of all that we put together the brightest minds in various areas to create an exceptional network and ecosystem of entrepreneurial-minded and execution-oriented experts. This is the JR Ecosystem.

JUSTROCKET builds a driven tech community in Cluj-Napoca since 2016.

About the project, we need power for

In cooperation with one of our clients, who is a financial technology company, we develop leading software solutions for asset tokenization. The clients benefit from all building blocks, services, and licenses needed to issue tokenized securities and manage decentralized security registries. The presence of a high number of intermediaries like banks and custodians leads to high transaction costs on the capital market. We use Distributed Ledger Technology to provide a global capital market 2.0 that works for everyone without intermediaries. We’re on this mission to create a more open access to capital and therefore more thriving ideas coming to life.
Some more interesting project facts

πŸ’‘ International / cross-border team working closely together.

πŸ’‘ Small team: influence team culture and the product.

πŸ’‘ Freedom to take responsibility.

πŸ’‘ Extensive product roadmap.


We are looking for a Junior Blockchain Engineer who wants to contribute to new features across the backend. Our ethereum based smart contracts fulfill all product and security requirements to best support our clients.

Furthermore, there is a seamless integration of the smart contract functionality into backend services.

You create what our software users deal with later. So be ambitious and professional in your programming to ensure an appealing interaction and great user experience!

As part of your daily business, you will:

⏩ Develop and maintain smart contracts using Solidity

⏩ Test and debug code to ensure functionality and stability

⏩ Document all changes made to smart contracts and related code

⏩ Collaborate with other team members to ensure seamless integration of blockchain functionality into our backend services

⏩ Designing and developing backend functionality to support user stories

⏩ Keep up to date with the latest developments in the Ethereum ecosystem

⏩ Continuously improve smart contract performance and security

⏩ Reviewing product concepts: providing feedback regarding the technical feasibility of product concepts

⏩ Looking for and suggesting improvements with regard to processes and product features


You shall bring:

βœ… Proven experience in smart contract development using Solidity

βœ… Experience with Ethereum blockchain and related tools (e.g. Truffle, Ganache, Remix)

βœ… Experience with at least one of the web3 libraries, such as web3py, web3js, ethers.js

βœ… Proven experience with Python and backend web engineering (e.g. Django, Flask)

βœ… Understanding of blockchain technology and distributed systems

βœ… Understanding of cryptography and security principles

βœ… Experience in designing and implementing REST-APIs to serve external clients

βœ… Great communication skills in English

Nice to have qualifications:

⏩ If you have experience with Django + Django REST framework

⏩ Strong analytical and problem-solving skills

⏩ Great team player and communicator in a diverse team

The general tech stack of the project is

πŸ–₯ Python, Django

πŸ–₯ React


πŸ–₯ SQL databases


We provide

πŸ’ͺ Assistance in setting up the project/integrating with the team

πŸ’ͺ Guidance while onboarding

πŸ’ͺ Support in any aspect of your activities

πŸ’ͺ Free choice of hardware

πŸ’ͺ Perks like private health insurance and 7card

πŸ’ͺ Regular team events like a week in a mountain hut

πŸ’ͺ Possibility to work remote (we will empower a flexible hybrid mode forever)

πŸ’ͺ Central working place in a big company house with lots of community space such as garden, BBQ area, and much more

πŸ’ͺ anything you are missing – let's talk!

Some final words

You will be joining a dynamic and crossborder project team in Cluj, working closely together with product owners, UX/UI, and the overall development team.

If you have any further questions feel free to contact us any time!

Looking forward to meeting you for a (virtual) coffee or tea β˜•οΈ