Senior Backend Engineer — Back

November 14, 2026

Hybrid

Senior

Barcelona, Spain

Indeed

Also worth knowing

Mandatory office attendance
GitHub profile required

Description

The role focuses on backend services for patient-facing mobile apps and clinical workflows, including versioned APIs, data migrations, and event-driven integrations. The engineer will own production reliability, quality practices, and AI-assisted workflows across services supporting healthcare products.

Responsibilities

Design and evolve the mobile-facing API and the NestJS services behind it
Maintain versioned, backward-compatible contracts for mobile clients that cannot be redeployed on demand
Model clinical treatment plans, aligner steps, procedures, and versioned medical forms, and implement reliable data migrations
Design events and consumers for REST and SNS/SQS integrations with booking, manufacturing, notifications, and ML pipelines
Ensure event-driven integrations are idempotent and recover cleanly from failures
Define production alerts, investigate incidents, and maintain performance, resilience, and patient-data protection
Conduct solution and architecture reviews before implementation begins
Provide unit and end-to-end test coverage for critical paths
Monitor services and configure alerting after releases
Use AI assistants in implementation, code review, alert investigation, and daily service health checks
Improve workflows that use AI tooling in day-to-day engineering work

Requirements

5+ years of backend development experience
Expert-level Node.js and TypeScript knowledge, including understanding the runtime
Strong experience with NestJS or a comparable framework, including module boundaries, dependency injection, and testability
Strong PostgreSQL skills covering relational modelling, indexing, transactions, and migrations on live data
Experience designing and operating event-driven systems with message queues such as SNS/SQS, Kafka, or RabbitMQ, including idempotency, retries, and dead-letter handling
Experience designing APIs for mobile or multiple client applications, including versioning and backward compatibility
Hands-on experience with AWS and containerised services
Experience working in a product team alongside designers, frontend and mobile engineers, and QA
Comfort using AI coding assistants in everyday work and having informed opinions about where they help
Experience with backend-for-frontend layers, push notifications such as FCM/APNs, pre-signed URL file uploads, or force-update flows
Med-tech, healthcare, clinical workflow, EMR, patient data, or other regulated-domain experience
Knowledge of distributed consistency patterns such as transactional outbox and inbox, or schema registries for event contracts
Experience with Kubernetes, Helm, Argo CD, or Terraform sufficient to read and change a service deployment
Experience with OpenTelemetry, Prometheus, and Grafana for defining alerts and runbooks
Experience integrating ML services into product flows, including asynchronous pipelines, result validation, and fallbacks
Basic React or React Native knowledge sufficient to read client code and discuss API contracts
Backend stack includes Node.js, TypeScript, NestJS, TypeORM, and PostgreSQL
Messaging stack includes AWS SNS/SQS and transactional outbox
Infrastructure stack includes AWS, Kubernetes, Argo CD, Terraform, and GitHub Actions
Observability stack includes OpenTelemetry, Prometheus, and Grafana
Client applications include React Native patient and doctor apps and React Backoffice web apps

Conditions

Hybrid work arrangement
Teeth aligner and whitening benefits

Similar jobs

Similar in meaning, not just matching keywords

This device does not meet the site requirements

What may not work

Senior Backend Engineer — Back

Job summary

Also worth knowing

Description

Responsibilities

Requirements

Conditions

Similar jobs

Job summary

Similar jobs

More on this topic

Senior Backend Engineer — Back

Job summaryAnalysis and summary of the descriptionSo-so [data-chart=chart-_R_39f1a6av5ubsmabqaqlb_] { --color-score: var(--warning); } .dark [data-chart=chart-_R_39f1a6av5ubsmabqaqlb_] { --color-score: var(--warning); } 62

Job summary

Also worth knowing

Description

Responsibilities

Requirements

Conditions

Similar jobs

Job summaryAnalysis and summary of the descriptionSo-so [data-chart=chart-_R_39f1a6av5ubsmabqaqlb_] { --color-score: var(--warning); } .dark [data-chart=chart-_R_39f1a6av5ubsmabqaqlb_] { --color-score: var(--warning); } 62

Job summary

Similar jobs

More on this topic