> Markdown version of [/jobs/ext/1243438-senior-backend-engineer-core-java-systems-integration](https://www.wearedevelopers.com/jobs/ext/1243438-senior-backend-engineer-core-java-systems-integration). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Backend Engineer - Core Java & Systems Integration - **Company:** Clear Labs - **Location:** San Carlos, CA, United States - **Experience:** Expert - **Salary:** $121,500.0 - $150,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Systems Engineering, Automation of Tests, Cloud Computing, Databases, Data Integration, Relational Databases, Dependency Injection, Middleware, Java Virtual Machine (JVM), Junit, Python (Programming Language), Laboratory Information Management Systems, Message Broker, MySQL, Query Optimization, RabbitMQ, Redis, Mockito, Service Development Studio, Data Streaming, Systems Integration, TypeScript, Fast Healthcare Interoperability Resources, Database Optimization, Spring-boot, State Machines, Backend, Spring Data, Containerization, Integration Tests, Kubernetes, Health Level Seven International, Transactional Database, Domain Driven Design, Api Management, Microservices - **Published:** July 11, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=58dd345fe04e71a9 ## About the Role * Legal Invariant: Applicants must be currently authorized to work in the United States on a full-time basis. Clear Labs does not provide employment-based visa sponsorship now or in the future. * Location Invariant: Able to commute daily to our San Carlos, CA headquarters for a 100% on-site schedule. * Experience: 5+ years of professional backend software development experience in a production environment. * Core Language: Elite proficiency in Java and the Spring Boot ecosystem (Dependency Injection, Spring Data, Transaction Management). * Infrastructure & Messaging: Hands-on experience operating containerized workloads on cloud infrastructure (strictly GCP/GKE preferred) utilizing message brokers like RabbitMQ or Cloud Pub/Sub. * Databases: Deep knowledge of relational databases (MySQL), including schema design, constraint invariants, query tuning, and indexing strategies. * Testing Philosophy: A strict affinity for writing comprehensive unit and integration tests (JUnit, Mockito, TestContainers) as a mandatory definition of "done." Nice to Have * Prior experience building LIMS or EHR data integrations (HL7, FHIR). * Familiarity with cybersecurity frameworks (SOC2/ISO 27001 control mapping). * Experience writing automation scripts in Python or TypeScript. Physical Requirements * Able to sit or stand at a computer for extended periods and use monitors and related hardware comfortably. ## Description This is an opportunity for a purist backend systems engineer. You will own the deterministic state machine that ensures our physical robotics and cloud orchestration layers operate in perfect synchronization., * Core JVM Service Development: Own, develop, and maintain a distributed matrix of 30+ microservices using Java and Spring Boot. * Systems Integration: Analyze, design, and build bulletproof, replay-safe API integrations between Clear Labs, external bioinformatics analysis pipelines, and clinical middleware (LIMS/EHR). * State Orchestration & Messaging: Drive architectural resilience using Domain-Driven Design (DDD) principles, leveraging Google Kubernetes Engine (GKE), RabbitMQ, and GCP Cloud Pub/Sub for asynchronous event streaming. * Data & Performance Engineering: Optimize and harden existing transactional database services (MySQL, Redis) for extreme reliability under high concurrency and massive data scale. * On-Market Tier Support: Act as the high-level technical lead for production escalations, triaging and troubleshooting deep infrastructure bugs within our grid service layers. * Compliance & Hardening: Implement technical security controls as we advance toward SOC2 and ISO 27001 compliance standards., Notice of E-Verify Participation: Clear Labs participates in the federal E-Verify program to confirm the identity and employment eligibility of all newly hired employees. For more information, please review the E-Verify Participation Poster (English/Spanish) and the Right to Work Poster (English/Spanish). ## Related Videos - [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis) - [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) - [Accelerating Authentication Architecture: Taking Passwordless to the Next Level](https://www.wearedevelopers.com/videos/733-accelerating-authentication-architecture-taking-passwordless-to-the-next-level) - [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) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers)