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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer (Backend) - Lingo - **Company:** Abbott - **Location:** Barcelona, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Microsoft Azure, Cloud Computing, Code Review, Computer Programming, Data Integration, EHealth, Python (Programming Language), Pair Programming, Performance Tuning, RabbitMQ, Secure Coding, Data Processing, Istio, Backend, Kotlin, Kubernetes, Low Latency, Apache Kafka, Graphql, Machine Learning Operations, Api Design, Api Gateway, Terraform, Stream Processing, Serverless Computing, Microservices - **Published:** September 9, 2026 - **Apply:** https://dejobs.org/x/x/93BB2B1E2D9348E5967CC7403F8DE7F8/job/ ## About the Role * 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., * 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). ## Description We're seeking a Senior Software Engineer ( Backend ) to design, build, and optimize Lingo's backend systems, ensuring they are scalable, resilient, and secure. You will play a pivotal role in implementing high-performance APIs, event-driven services, and data integrations across our global deployments. In this role, you'll work closely with Product, Mobile, Platform/SRE, and Data/ML teams to deliver robust cloud-native services, troubleshoot complex issues, and continuously improve reliability and developer experience. You'll contribute your expertise to architecture discussions, lead implementation of key projects, and mentor junior engineers in best practices., * 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. ## Related Videos - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [Rate-limiting using eBPF and Istio: How to protect your SaaS customers from themselves](https://www.wearedevelopers.com/videos/100220-rate-limiting-using-ebpf-and-istio-how-to-protect-your-saas-customers-from-themselves) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Back(end) to the Future: Embracing the continuous Evolution of Infrastructure and Code](https://www.wearedevelopers.com/videos/440-back-end-to-the-future-embracing-the-continuous-evolution-of-infrastructure-and-code) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)