Senior Backend Web3 Software Engineer

1 tydzień temu

Warszawa, Mazovia, Polska BlockyDevs sp. z o.o. Pełny etat

We are looking for a Senior Web3/Back-end Software Engineer to join our team. Our ideal candidate is someone who thrives on solving complex problems, is eager to learn new technologies, and has a deep understanding of back-end development, blockchain technologies, and cryptographic principles. You will work closely with front-end engineers, product managers, and designers to build scalable, maintainable, and high-performance back-end solutions.

Key Responsibilities

  • Develop and maintain back-end services using Rust.
  • Work with Java or TypeScript to integrate with existing systems.
  • Utilize and apply secure cryptographic solutions including ECDSA, Ed25519, and RSA, with a deep understanding of how they work and their differences.
  • Build and optimize back-end applications using frameworks like Actix-web, Spring Boot, or
  • Develop and integrate with EVM-based blockchain solutions.
  • Work with PostgreSQL and NoSQL databases (e.g., Cassandra, MongoDB).
  • Collaborate using GitLab and Git for version control and CI/CD workflows.
  • Write clean, maintainable, and well-documented code.
  • Understanding of RESTful web-services and microservice architecture
  • Participate in code reviews and contribute to team knowledge sharing.
  • Troubleshoot, debug, and upgrade existing software.
  • Stay up-to-date with modern back-end/Web3 development best practices and technologies.

Requirements

  • Strong proficiency in Rust.
  • Solid experience in Java or TypeScript.
  • In-depth understanding of asymmetric cryptography and digital signature algorithms.
  • At-least 6 years of experience creating back-end applications using Actix-web, Spring Boot, or
  • Knowledge on any blockchain e.g. EVM-compatible ones.
  • Familiarity with smart contract development.
  • Experience working with GitHub, Git, and CI/CD pipelines.
  • Proficiency in relational databases like PostgreSQL or MySQL.
  • Knowledge of any NoSQL databases (e.g., Cassandra, MongoDB).
  • Strong problem-solving skills and a passion for tackling complex challenges.
  • Fluency in English, both written and spoken.

What's Important for Us?

  • Ability to think critically and independently – We value developers who can analyze problems and propose effective solutions.
  • Passion for learning – Willingness to explore and adapt to new technologies.
  • Team player – We believe in collaboration and knowledge sharing.
  • Security mindset – Awareness of security best practices in blockchain and back-end development.
  • Proactive attitude – We need someone who takes ownership and drives projects forward.

Nice to Have

  • Familiarity with AWS or Google Cloud platforms
  • General familiarity and awareness of the crypto and blockchain ecosystem.
  • Knowledge of zero-knowledge proofs (ZKPs) and privacy-preserving technologies.
  • Experience with RPC API's and Protobuf communication
  • Exposure to Redis (or any other key-value stores) for caching and state management.
  • Hands-on experience with Docker/Kubernetes.
  • Experience with WebAssembly
  • Exposure to Solidity or GoLang

What We Offer

  • Attractive remuneration conditions.
  • B2B cooperation.
  • Stability of employment – Bonuses for long-term cooperation.
  • Possibility of remote/hybrid work.
  • Interesting and challenging tasks – Engage in various projects.
  • Opportunity to develop and improve your competencies.
  • Permanent or flexible working hours.
  • Independence and real influence on projects.
  • Necessary work tools provided.
  • Integration trips, team meetings, and social events.
  • Coffee, tea, and fresh fruit to keep you refreshed.
  • No dress code – Be yourself
  • Supportive, close-knit team – Work in an engaging and collaborative environment.

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