Senior Software Engineer, Node.js

Overview

1inch is the DeFi ecosystem building financial freedom for everyone. 1inch products help users and builders trade, hold and track digital assets—with self-custody, security and an intuitive user experience to unlock true crypto ownership. 1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond. We’re looking for an enterprise-oriented Senior Software Engineer with a focus on structure and scalability.

Location: We hire with a focus on Dubai and Europe. For this role, we prefer candidates who are either based in Dubai or working remotely within +/- 4 hours GST time. The position is based on a hybrid schedule, with a minimum of three days per week on-site in our Dubai office.

Responsibilities

• Designing and implementing scalable microservices and high-performance APIs using Nest.js
• Ensuring low latency and high throughput in service architecture
• Writing clean, maintainable, and well-documented code while following internal coding standards
• Monitoring technical and business metrics and setting up alerting systems for early incident detection
• Performing regular profiling and system performance analysis to optimise backend components, including database queries and response times
• Participating in code reviews and engaging in architecture discussions and sprint planning sessions
• Promoting best engineering practices across the team
• Ensuring backend systems are secure, scalable, and resilient
• Applying industry best practices for data protection and system design
• Proactively identifying and mitigating system vulnerabilities
• Staying updated with emerging backend technologies and introducing new tools and practices to enhance team efficiency
• Continuously seeking ways to improve system architecture and performance

Requirements

• Previous experience working in fintech, DeFi, or crypto projects
• Experience with microservices architecture in a high-load environment
• Experience setting up and managing metrics pipelines and alerting systems

Skills

• Proficient in Node.js/TypeScript with strong SQL skills and PostgreSQL experience
• Familiar with Redis, message brokers (e.g. NATS, EMQX, Kafka), and monitoring tools (Prometheus, Grafana)
• Good understanding of blockchain fundamentals, Web3, and Solidity
• Knowledge of CI/CD pipelines, Docker, and basic Kubernetes concepts
• Strong problem-solving abilities, proactive communication, and quality-driven mindset

Nice To Have

• Nest.js
• Knowledge of event-driven architecture
• Knowledge of Web3 libraries (ethers.js, web3.js) for blockchain interactions

Why you’ll love working with us

• Join a young, creative team in a fast-paced and supportive environment
• We’re open to new ideas — if you’ve got a vision, pitch it and make it happen
• Enjoy competitive pay that matches your skills and experience
• Be part of a company that’s shaping the future of DeFi
• Take time when you need it — we offer unlimited vacation days
• Get fully compensated for your work gear — we’ll set you up for success
• Travel with us! We host an annual team retreat at a top international location