Middle Kotlin Developer

1 місяць тому

-, Україна
Повністю віддалено
За результатами співбесіди

We are seeking a tech enthusiast with strong mathematical skills to join the core of our client’s team, focusing primarily on blockchain technology. In this role, you will collaborate with the team to architect, design, develop, and deploy decentralized platform solutions for our customers.

Your main responsibilities will include analyzing requirements, designing blockchain solutions tailored to specific business models, and overseeing the launch of products on blockchain networks.

Tech stack: Telegram BOT, Telegram Mini Apps, Kotlin, Postgres, Docker.


  • 2+ years of minimum experience developing backend with Kotlin.
  • Strong math skills.
  • Highly capable of executing in a fast-paced, virtual, changing environment.
  • Knowledge of oAuth.
  • Knowledge of Software Security Principles.


Bonus Skills:

  • Telegram BOT API
  • Telegram Mini Apps
  • Experience with other Social Media APIs.
  • Experience with Aggregator, AMM DEX, or Perpetuals Protocols
  • Strong knowledge of Penetration Testing
  • Experience with Web3.js (or its derivatives: ethers.js, viem, etc), RPC, and web socket connections
  • Strong Understanding of Async Programming.



  • Develop Telegram BOT applications as an extension of our customer’s core infrastructure.
  • Participate in the full life cycle of blockchain development, from research and analysis to architecture (security, performance, scalability etc), design and execution (coding, testing, and benchmarking).
  • Develop (code hands on) protocols, backend APIs.
  • Code / performance Optimizations.
  • Writing Unit, automated Test, End to End Test.
  • Must be able to work independently on objectives.
  • Perform peer code reviews.
  • Stay up to date with the developments in the global blockchain community.
  • Maintain existing protocols.
  • Raise the bar in writing clean, well-documented code.


We offer:

  • The position requires an 8-hour workday with a late morning start, as the team begins work between 11:00 AM and 12:00 PM GMT+1.
  • Cooperation only under the B2B model.
  • Paid vacation of 18 working days per year.
  • Paid sick leave of 10 working days per year.
  • English-speaking clubs for language practice and development.
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Qubit Labs is an Ukrainian IT-company, partner for tech industry product leaders all over the globe.

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Анна Панченко
Анна Панченко
Менеджер проєкту