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# Backend Engineer

- **Company:** Parser Limited
- **Location:** Barcelona, Spain
- **Salary:** €70,000.0 - €85,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Software Documentation, Data Stores, Relational Databases, Software Debugging, Distributed Systems, Elasticsearch, PostgreSQL, MySQL, Node.Js, Parsing, Redis, TypeScript, Data Logging, Large Language Models, Caching, Backend, Event Driven Architecture, Integration Tests, Kubernetes, Apache Kafka, Amazon Simple Queue Service (SQS), Dynatrace, Microservices
- **Published:** September 27, 2026
- **Apply:** https://www.adzuna.es/contact-us.html

## About the Role

+ Strong expertise in backend development with Node.js / TypeScript, along with proficiency or quick adaptability in Go.
 + Proven track record designing microservices architecture, REST/gRPC APIs, and event-driven systems (Kafka, SQS/SNS).
 + Deep experience with relational databases (MySQL/PostgreSQL), OpenSearch/Elasticsearch, and Redis caching.
 + Production hands-on experience with AWS services and containerized deployments on Kubernetes.
 + Solid background in production observability (metrics, tracing, logs), SLO management, and incident response.
 + Proactive self-starter with strong communication skills and product instinct to operate effectively without rigid specifications.
Desirable Requirements:

 + Hands-on experience with production LLM applications, including tool/function calling, context management, and caching.
 + Practical experience debugging non-deterministic systems or AI-driven backend pipelines.

## Description

Senior Backend Engineer, you will own backend services powering a new conversational AI product. You'll design high-throughput microservices, build real-time event-driven pipelines, and integrate LLM-driven tool-calling capabilities to create responsive, scalable user experiences.
Your key responsibilities:
Your responsibilities include, but are not limited to:

 + Design, build, and maintain high-performance microservices and REST/gRPC APIs primarily using TypeScript (Node.js) and Go.
 + Architect event-driven and asynchronous streaming workflows utilizing Kafka, SQS/SNS, or similar distributed systems.
 + Model, optimize, and tune relational and search data stores, including PostgreSQL/MySQL, OpenSearch, and Redis.
 + Deploy, operate, and scale containerized applications on AWS using Kubernetes (EKS/ECS).
 + Instrument services with comprehensive observability tools (metrics, logging, distributed tracing) to diagnose non-deterministic behavior in LLM workflows.
 + Establish clean service boundaries, system documentation, and sound unit/integration testing standards.
 + Collaborate with cross-functional teams, make product-shaping technical judgment calls, and participate in incident response.
What you'll bring to the role, Parser may use AI-assisted tools during certain stages of the recruitment process to support operational efficiency. Our recruiting teams use AI to streamline note-taking and scheduling.
All hiring decisions are made by people, with human review and oversight.
Come and join our #ParserCommunity.
https://parserdigital.com/
Follow us on Linkedin
Inscribirse en esta oferta


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