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Urgent! Senior Software Engineer, Node.js Job Opening In Madrid – Now Hiring 1inch

Senior Software Engineer, Node.js



Job description

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, comprehensive security and an intuitive user experience.

1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond.

If you’re someone who thinks big, moves fast and wants to make an impact right from day one, join our industry-changing team.

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.

We’re looking for an enterprise-oriented Senior Software Engineer with a focus on structure and scalability.

You’ll be responsible for developing high-performance, scalable backend systems for our core infrastructure, including services like History, Tokens, Prices, and BFF.

This role requires expertise in the Node.js ecosystem (Nest.js), as well as experience with microservices architecture and various storage and monitoring tools.

You’ll need a basic knowledge of blockchain technologies and be comfortable working in a Scrum-based, agile environment.

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 — pitch your vision and make it happen

Competitive pay that matches your skills and experience

Be part of a company that’s shaping the future of DeFi

Unlimited vacation days when you need it

Fully compensated for your work gear

Annual team retreat at a top international location

Job Details

Seniority level: Not Applicable

Employment type: Full-time

Job function: Information Technology

Industries: Transportation, Logistics, Supply Chain and Storage

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Required Skill Profession

Informática Y Tecnología



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