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# Senior Full-Stack Engineer

- **Company:** Commit
- **Location:** Madrid, Spain
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Database Queries, Software Debugging, PostgreSQL, Node.Js, Query Optimization, Redis, Data Streaming, TypeScript, Software Vulnerability Management, Autoscaling, Software Security, Backend, Event Driven Architecture, Kubernetes, Apache Kafka, Front End Software Development, NestJS
- **Published:** September 7, 2026
- **Apply:** https://www.buscojobs.com.es/senior-full-stack-engineer-en-madrid-ID-370331955

## About the Role

The ideal engineer has proven experience building production-grade ingestion and processing systems, making architecture decisions based on real data volumes, and operating reliably in Kubernetes/AWS environments.
Occasional frontend work exists (small UI tasks/new pages), but the core of the job is backend systems design and implementation.
Requirements
TypeScript + Node.js (production experience) NestJS (strong preference, used as the main backend framework) Strong experience designing backend systems at high scale: autoscaling, HA, performance, resilience, failure modes Strong knowledge of event-driven systems: Kafka-based ingestion/streaming, producers/consumers, pipelines, batching concepts PostgreSQL / SQL proficiency (deep skills required: schema modeling, query optimization) Kafka (hands-on experience strongly preferred) Redis (working knowledge) Experience working in AWS + Kubernetes environments (production familiarity expected) Practical experience with logs, metrics, tracing to monitor and debug production systems.
Nice-to-Have
Security domain familiarity (application security / runtime protection / vulnerability management) - advantage, not mandatory Prior work in data-intensive security platforms or similar high-scale systems
#J-*****-Ljbffr

## Description

The company is hiring aSenior Full-Stack Engineer in Portugalwho is strongly backend-leaning (?*****% backend) to work on high-scale backend pipelines and data-heavy systems.The ideal engineer has proven experience building production-grade ingestion and processing systems, making architecture decisions based on real data volumes, and operating reliably in Kubernetes/AWS environments.Occasional frontend work exists (small UI tasks/new pages), but the core of the job is backend systems design and implementation.RequirementsTypeScript + Node.js (production experience) NestJS (strong preference, used as the main backend framework) Strong experience designing backend systems at high scale: autoscaling, HA, performance, resilience, failure modes Strong knowledge of event-driven systems: Kafka-based ingestion/streaming, producers/consumers, pipelines, batching concepts PostgreSQL / SQL proficiency (deep skills required: schema modeling, query optimization) Kafka (hands-on experience strongly preferred) Redis (working knowledge) Experience working in AWS + Kubernetes environments (production familiarity expected) Practical experience with logs, metrics, tracing to monitor and debug production systems.Nice-to-HaveSecurity domain familiarity (application security / runtime protection / vulnerability management) - advantage, not mandatory Prior work in data-intensive security platforms or similar high-scale systems#J-*****-Ljbffr


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