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# Senior Software Engineer, Node.Js

- **Company:** 1Inch
- **Location:** Madrid, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Code Review, Database Queries, Digital Assets, Monitoring of Systems, PostgreSQL, Message Broker, Node.Js, Scrum Methodology, Redis, Blockchain, Prometheus, Systems Architecture, TypeScript, Grafana, Backend, Kubernetes, Low Latency, Apache Kafka, Web3.js, NestJS, Docker, Microservices
- **Published:** July 31, 2026
- **Apply:** https://www.buscojobs.com.es/senior-software-engineer-node-js-en-madrid-ID-364270250

## About the Role

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.ResponsibilitiesDesigning and implementing scalable microservices and high-performance APIs using Nest.jsEnsuring low latency and high throughput in service architectureWriting clean, maintainable, and well-documented code while following internal coding standardsMonitoring technical and business metrics and setting up alerting systems for early incident detectionPerforming regular profiling and system performance analysis to optimise backend components, including database queries and response timesParticipating in code reviews and engaging in architecture discussions and sprint planning sessionsPromoting best engineering practices across the teamEnsuring backend systems are secure, scalable, and resilientApplying industry best practices for data protection and system designProactively identifying and mitigating system vulnerabilitiesStaying updated with emerging backend
technologies and introducing new tools and practices to enhance team efficiencyContinuously seeking ways to improve system architecture and performanceRequirementsPrevious experience working in fintech, DeFi, or crypto projectsExperience with microservices architecture in a high-load environmentExperience setting up and managing metrics pipelines and alerting systemsSkillsProficient in Node.js/TypeScript with strong SQL skills and PostgreSQL experienceFamiliar with Redis, message brokers (e.g. NATS, EMQX, Kafka), and monitoring tools (Prometheus, Grafana)Good understanding of blockchain fundamentals, Web3, and SolidityKnowledge of CI/CD pipelines, Docker, and basic Kubernetes conceptsStrong problem-solving abilities, proactive communication, and quality-driven mindsetNice To HaveNest.
xqbhyrx jsKnowledge of event-driven architectureKnowledge of Web3 libraries (ethers.js, web3.js) for blockchain interactionsWhy you'll love working with usJoin a young, creative team in a fast-paced and supportive environmentWe're open to new ideas - pitch your vision and make it happenCompetitive pay that matches your skills and experienceBe part of a company that's shaping the future of DeFiUnlimited vacation days when you need itFully compensated for your work gearAnnual team retreat at a top international locationJob DetailsSeniority level: Not ApplicableEmployment type: Full-timeJob function: Information TechnologyIndustries: Transportation, Logistics, Supply Chain and Storage#J-*****-Ljbffr

## Description

OverviewSi sus habilidades, experiencia y cualificaciones coinciden con las de esta descripción del puesto, no demore su solicitud.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.ResponsibilitiesDesigning and implementing scalable microservices and high-performance APIs using Nest.jsEnsuring low latency and high throughput in service architectureWriting clean, maintainable, and well-documented code while following internal coding standardsMonitoring technical and business metrics and setting up alerting systems for early incident detectionPerforming regular profiling and system performance analysis to optimise backend components, including database queries and response timesParticipating in code reviews and engaging in architecture discussions and sprint planning sessionsPromoting best engineering practices across the teamEnsuring backend systems are secure, scalable, and resilientApplying industry best practices for data protection and system designProactively identifying and mitigating system vulnerabilitiesStaying updated with emerging backend technologies and introducing new tools and practices to enhance team efficiencyContinuously seeking ways to improve system architecture and performanceRequirementsPrevious experience working in fintech, DeFi, or crypto projectsExperience with microservices architecture in a high-load environmentExperience setting up and managing metrics pipelines and alerting systemsSkillsProficient in Node.js/TypeScript with strong SQL skills and PostgreSQL experienceFamiliar with Redis, message brokers (e.g. NATS, EMQX, Kafka), and monitoring tools (Prometheus, Grafana)Good understanding of blockchain fundamentals, Web3, and SolidityKnowledge of CI/CD pipelines, Docker, and basic Kubernetes conceptsStrong problem-solving abilities, proactive communication, and quality-driven mindsetNice To HaveNest.xqbhyrx jsKnowledge of event-driven architectureKnowledge of Web3 libraries (ethers.js, web3.js) for blockchain interactionsWhy you'll love working with usJoin a young, creative team in a fast-paced and supportive environmentWe're open to new ideas - pitch your vision and make it happenCompetitive pay that matches your skills and experienceBe part of a company that's shaping the future of DeFiUnlimited vacation days when you need itFully compensated for your work gearAnnual team retreat at a top international locationJob DetailsSeniority level: Not ApplicableEmployment type: Full-timeJob function: Information TechnologyIndustries: Transportation, Logistics, Supply Chain and Storage#J-*****-Ljbffr


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