Understanding of cryptocurrencies and blockchain protocols (e.g. bitcoin, ethereum, layer 2 solutions). We are seeking skilled Backend Developers to join our……
Have a minimum 1 year of blockchain software experience. Willing to work directly with our blockchain developers to audit their code and secure their products……
Have a minimum of 1 year of blockchain software experience. Willing to work directly with our blockchain developers to audit their code and secure their……
2+ years of hands-on experience with one or more blockchain platforms. Familiarity with and interest in reading EIPs, BIPs and technical articles on blockchain……
110 - 150 PLN/H + VAT (B2B). Serving clients across the globe, CrustLab doesn’t just code web or mobile apps, but handles product development comprehensively,……
Interest in emerging domains like blockchain, IoT, real-time data processing, or WebAssembly. Familiarity with industry trends in Rust ecosystems (e.g.,……
Remuneration ranging from 125 to 185 PLN net per hour for start. 100% remote company with remote-first mindset. Leadership and soft-skills in-house trainings.…
Remuneration ranging from 125 to 185 PLN net per hour for start. 100% remote company with a remote-first mindset. Leadership and soft-skills in-house trainings.…
Remuneration ranging from 83 to 160 PLN net per hour for a start. 100% remote company with a remote-first mindset. Ability to write clean and testable code.…
We are seeking skilled Backend Developers to join our engineering team focused on building and scaling a backend platform that interacts with blockchain protocols and high-throughput data pipelines. This role involves developing robust services in Python, managing cloud infrastructure, and supporting data storage and processing across both structured and unstructured datasets.
Responsibilities
Develop scalable and performant backend services using advanced Python, including asyncio and FastAPI
Integrate with SQL and NoSQL databases, primarily MongoDB
Build, test, and deploy services in Dockerized environments
Manage version control workflows using Git-based repositories
Ensure the quality and performance of backend logic in cloud-based deployments
Collaborate closely with frontend, DevOps, and data engineering teams
Requirements
Proven, hands-on experience in advanced Python development
Strong knowledge of asynchronous programming models (asyncio, async/await)
Proficiency in Docker containerization and deployment
Experience with MongoDB and data modeling for NoSQL solutions
Comfortable with Git workflows and team-based version control