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Senior Backend/Web3 Software Engineer
  • Warsaw
Senior Backend/Web3 Software Engineer
Warszawa, Warsaw, Masovian Voivodeship, Polska
Silk Software House Sp. z o.o.
15. 3. 2025
Informacje o stanowisku

technologies-expected :


  • Rust
  • Java
  • TypeScript
  • Actix-web
  • Spring Boot
  • Nest.js.
  • GitHub
  • Git
  • PostgreSQL
  • NoSQL
  • MySQL
  • CI/CD

technologies-optional :


  • AWS
  • Google Cloud Platform
  • API RPC
  • Protobuf
  • Redis
  • Docker
  • Kubernetes
  • WebAssembly
  • Solidity
  • GoLang

about-project :


  • 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.

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 Nest.js.
  • 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-expected :


  • 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 Nest.js.
  • 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.
  • Whats 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.

offered :


  • 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.

benefits :


  • remote work opportunities
  • flexible working time
  • fruits
  • integration events
  • computer available for private use
  • no dress code
  • video games at work
  • coffee / tea
  • drinks
  • leisure zone
  • employee referral program

  • Praca Warszawa
  • Warszawa - Oferty pracy w okolicznych lokalizacjach


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