Senior Backend/Web3 Software Engineer

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 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

• 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.

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.