Senior Backend Engineer (Typescript)

Project Description

The project is a DeFi-focused infrastructure platform that builds scalable, high-performance backend systems for handling digital assets and financial data. The backend services power core infrastructure components such as pricing, token data, historical data, and backend-for-frontend (BFF) layers used by multiple products and integrations.
The system operates in a high-load environment and requires strong focus on structure, scalability, reliability, and security within a blockchain-driven ecosystem.

Responsibilities

• Design and implement scalable backend microservices and high-performance APIs using Nest.js
• Ensure low latency and high throughput across service architecture
• Write clean, maintainable, and well-documented code in accordance with internal coding standards
• Monitor technical and business metrics and configure alerting systems for early incident detection
• Perform regular system profiling and performance analysis, including database query and response-time optimisation
• Participate in code reviews, architecture discussions, and sprint planning sessions
• Promote best engineering practices across the team
• Ensure backend systems are secure, scalable, and resilient
• Apply industry best practices for data protection and system design
• Proactively identify and mitigate system vulnerabilities
• Stay up to date with emerging backend technologies and introduce tools or practices that improve system performance and team efficiency

• Continuously seek improvements in system architecture and overall backend performance

   

Requirements

• Previous experience working on fintech, DeFi, or crypto-related projects
• Hands-on experience with microservices architecture in high-load environments
• Experience setting up and managing metrics pipelines and alerting systems
• Strong proficiency in Node.js and TypeScript
• Solid SQL knowledge and hands-on experience with PostgreSQL
• Familiarity with Redis, message brokers (e.g. NATS, EMQX, Kafka), and monitoring tools such as Prometheus and Grafana
• Good understanding of blockchain fundamentals, Web3 concepts, and Solidity
• Working knowledge of CI/CD pipelines, Docker, and basic Kubernetes concepts
• Strong problem-solving skills, proactive communication style, and quality-driven mindset
• Experience working in Scrum-based agile environments

• Willingness to work in a hybrid format, including on-site presence multiple days per week

   

Nice to Have

• Deep hands-on experience with Nest.js
• Knowledge of event-driven architecture and asynchronous communication patterns
• Experience with Web3 libraries such as ethers.js or web3.js for blockchain interactions