Backend Platform Engineer - Datastore Specialist (Hybrid)

A Place For Rover, Inc.; Barcelona; On-site; EUR 50,000 - 74,000; Full time

Job summary

Lingo is building a cutting-edge digital health platform. We design real-time biosensor data processing with scalable backend services and analytics pipelines.

Senior Software Engineer (Backend) will design and maintain microservices, implement event-driven integrations, and ensure security and privacy per HIPAA/GDPR while mentoring others and solving production issues. Join a customer-first, quality-driven team that collaborates across product and SRE to deliver high performance, observable

Qualifications

• 5–8 years of backend engineering experience in distributed systems.
• Hands-on with REST APIs and API design.
• Experience with Kubernetes in production.
• Experience with Kafka or RabbitMQ messaging systems.
• Proficiency in Java, Kotlin or Python.
• Knowledge of HIPAA/GDPR compliance in security.
• Ability to optimize performance and scalability.
• Strong cross-functional collaboration.

Responsibilities

• Design, develop, and maintain scalable microservices and APIs.
• Implement event-driven integrations with messaging systems.
• Collaborate on architecture decisions and data models.
• Optimize for low latency, high throughput, cost efficiency.
• Mentor junior engineers through code reviews and pairing.
• Troubleshoot production issues and contribute to incident response.

Skills

Backend engineering

Microservices architecture

API design

Kubernetes

Kafka

RabbitMQ

Java

Kotlin

Python

Security practices

Tools

Terraform

Helm

Docker

Job description

Senior Software Engineer (Backend) ABOUT LINGO Lingo is building a cutting‑edge digital health platform that fuses continuous biosensor data, high‑performance backend engineering, and advanced analytics to help people live healthier, longer, fuller lives. Our systems process massive volumes of real‑time data, and the backend is the heartbeat that transforms biosensor signals into actionable health insights for our users. WHAT YOU'LL DO Design, develop, and maintain scalable microservices and APIs for real‑time biosensor data processing. Implement event‑driven integrations with messaging/streaming systems (Kafka, RabbitMQ) and analytics pipelines. Collaborate with SRE to ensure observability, performance, and operational excellence across backend services. Participate in architecture and design reviews, contributing to decisions on service boundaries, data models, and communication patterns. Optimize backend services for low latency, high throughput, and cost efficiency. Apply privacy‑by‑design and security standards in line with HIPAA/GDPR compliance requirements. Write clean, maintainable, and testable code; establish and uphold engineering standards within the team. Mentor junior engineers through code reviews, pair programming, and knowledge sharing sessions. Troubleshoot production issues and contribute to incident response and post‑mortem analysis. REQUIRED QUALIFICATIONS + 5‑8 years of backend engineering experience with distributed, cloud‑native systems. + Strong skills in microservices architecture and API design (REST; familiarity with GraphQL/gRPC is a plus). + Experience with Kubernetes in production environments and familiarity with service mesh concepts. + Hands‑on proficiency with messaging/streaming systems such as Kafka or RabbitMQ. + Programming expertise in backend languages such as Java, Kotlin, Python. + Knowledge of secure coding practices and compliance requirements (HIPAA, GDPR, or similar). + Solid understanding of performance optimization, scalability patterns, and async data processing. + Strong collaboration and communication skills; ability to work cross‑functionally with other engineering and product teams. PREFERRED QUALIFICATIONS + Experience integrating backend services with analytics and machine learning pipelines. + Exposure to API gateways, authentication/authorization patterns, and rate limiting strategies. + Background in digital health, IoT, or other mission‑critical platforms. + Familiarity with cloud platforms (Azure/AWS/GCP) and infrastructure‑as‑code tooling (Terraform, Helm). LINGO CULTURE Customer‑first, quality‑driven, growth‑minded, and united. Why Cisco? Why Sanofi? Why NTT DATA? WE ARE COMMITTED TO EQUAL OPPORTUNITY EMPLOYMENT The salary range for this position is :49.600,00 - 74.400,00 Final compensation will be determined based on demonstrated experience, skills, location, and other relevant factors. At this stage, the content is kept to a compact summary and does not include confidential or sensitive information. For full details, please refer to the official job postings on the company career site.