EOS Blockchain Engineer - Tallinn or Remote

Tallinn /
R&D – Blockchain /
Full time
About Ultra

Ultra is a blockchain company launching a PC games distribution platform initially and ultimately an app ecosystem. Ultra offers a highly integrative user experience and new business models for developers, gamers and influencers. Our goal is to unify the fragmented gaming industry around one platform. 

The combination of cutting-edge technologies we use (including blockchain) enables Ultra to aggregate all gamers’ activities in one place: from buying, playing and reselling games, to accessing live-streaming platforms, tournaments, reviews and contests, as well as interacting with communities and brands. 

The team is currently composed of 70+ full-time members, working across 5 continents. To learn more, visit our website: https://ultra.io/

The Role

Ultra is looking for a mid/senior EOS blockchain developer to join our growing team. This is an exciting project that will involve challenging problem solving and architecting a solution from the ground up.
In this role, you will design, implement, test and deploy smart contracts and plugins meeting specific business requirements. Build, launch, and maintain a blockchain that serves millions of users. As a team, you will be responsible for maintaining and updating smart contracts and plugins deployed on-chain and ensure their availability and security. As a technical expert, you will be expected to be on the cutting edge of technology, bringing new ideas and performing proof-of-concepts of solutions to improve the existing system (code quality, maintainability, performance, ...)

Your Profile

You are passionate about using your technical skills to deliver amazing user experiences. You enjoy learning new and emerging technologies. You are pro open source, do not like to reinvent the wheel, you are proactive and a great team player. You are attentive to potential security vulnerabilities, constantly strive for improvement, like to get out of your comfort zone. You are excellent at problem solving, critical thinking, and collaborating. Finally, you thrive in a startup environment!

Key Requirements

    • High C++ level - minimum 5 years working experience
    • Previous experience with EOS
    • High level in algorithms, programmation
    • Architecture knowledge
    • Analytic mindset, project oriented, good priority management
    • Great communication and interpersonal skills, transparency
    • Fluency in English

It's great if you also have:

    • Previous experience with another type of blockchain
    • Knowledge of the blockchain technologies
    • Previous experience, or interest in the gaming industry

What you will do

    • Your challenges
    • All our services require highly scalable server architectures (+1mil concurrent user) where blockchain will ultimately impact all our infrastructural choices. Ultra could be considered as a multitude of smaller sub-projects, each having its own team leader. Your ability to advise and collaborate with multiple sub-teams simultaneously will define our project's success. You will work with offices all around the world, working remotely will be part of your daily routine.
    • Your tasks
    • Develop EOS system smart contracts, EOS plugins, work on our Crypto Wallet solution. Help our blockchain partners in optimising the public testnet and mainnet. Evolve with blockchain technology and research into new tools/plugins/dapps/standards. Monitor and troubleshoot production issues. Jump in conceptual high level and low-level designs. Share your knowledge with colleagues and other teams, mentor junior hires. Participate in PR reviews with other engineers and offer feedback on issues – architecture, design, system integration, performance and availability. Participate in Backlog grooming, daily meeting, retrospective and sprint review. Design and implement efficient test coverage. Write technical documentation.
    • At Ultra, you will: 
    • Learn every day and be involved in many exciting projects. Explore how blockchain will ultimately affect our infrastructural and backend choices. Have the opportunity to grow with an ambitious and fast-paced company, on an innovative market. Have a lot of autonomy to put into practice what you advise, to set up new processes, and to share and implement your ideas with the team; Join an enthusiastic team and take part in Ultra's international expansion. Work with passionate colleagues in a multicultural, open-minded environment

What's next

    • If we select your application, you will start our interview process:
    • Meet Mathilde, Recruiter
    • Take our C++ coding test at home
    • Meet Hugo, our Head of Engineering, and Adam, our Lead Blockchain Engineer
    • Meet the Blockchain team


🌈 Ultra is a true international company currently spread across the globe (Estonia, Belgium, France, Portugal, Ukraine, USA, China, South Africa…). We thrive off diverse perspectives! We recognize that diversity has different aspects: gender, sexual orientation, ability, ethnic origin, social, age, lifestyle, and more! We're committed to giving equal opportunities, and fostering a culture where everyone is heard and feels a sense of belonging.