**Job Title:** Backend Software Engineer (CONTRACTOR) **About Interlace Health** Interlace Health is a leader in providing innovative electronic forms, eSignatures, and workflow technology solutions for the healthcare industry. Our platform integrates seamlessly with electronic health records (EHR) to improve patient experience, reduce costs, and streamline healthcare operations. We are committed to driving efficiency and delivering high\-quality solutions that solve the industry’s most pressing challenges. **Overview:** We are seeking an experienced **Backend Software Engineer (Contractor)** to architect and build secure, scalable backend services in support of our cloud\-based healthcare platform. The ideal candidate is highly proficient in modern backend development (Node.js/NestJS and C\#/.NET), thrives in DevOps environments, and has experience managing detailed ticket planning and status tracking via Azure DevOps. Please submit your resume **in English**. Applications not submitted in English will be given the **lowest priority** during our review process. Please make sure to **include** documentation of English proficiency (e.g., CEFR level, IELTS/TOEFL score, or equivalent). **Responsibilities:** * Architect and build modular, multi\-tenant backend services using Node.js/NestJS and C\#/.NET with Entity Framework * Design and manage database architecture, including schema design, performance optimization, and migrations * Secure patient data and ensure HIPAA/HITRUST compliance * Design and optimize RESTful APIs and event\-driven workflows for patient registration, form management, and consent processing * Develop and maintain automated unit and integration tests (e.g., Jest, NUnit, xUnit) to ensure high code quality * Implement and maintain authentication and authorization mechanisms (OAuth2, JWT, RBAC) following OWASP Top 10 principles * Deploy and monitor applications using CI/CD pipelines (Azure DevOps or GitHub Actions), Docker, and Kubernetes (AKS) * Collaborate with frontend (Angular), QA, and product teams to solve complex hospital workflow challenges * Troubleshoot system and performance issues; configure robust logging, monitoring, and alerting **Qualifications:** * 5\+ years of experience building backend services with C\#, .NET, Node.js, and TypeScript * Proven ability to design modular, scalable codebases * Deep understanding of REST APIs, webhooks, and message queues (Azure Event Grid, Kafka, or Redis) * Expertise in secure authentication and authorization patterns (OAuth2, JWT, RBAC) * Strong proficiency in PostgreSQL and relational database schema design and optimization * Experience with ORMs such as Entity Framework and Sequelize, including database migration management * Hands\-on experience with Docker, Kubernetes, and Microsoft Azure (App Services, AKS) * Experience configuring scalable and secure network architecture with tools such as Nginx and Azure services (VNets, NSGs, Load Balancer, Application Gateway) * Skilled in CI/CD pipeline configuration and management using Azure DevOps or GitHub Actions * Familiarity with test automation frameworks (e.g., Jest, Jasmine, Cypress) for unit and integration testing * Applicants must demonstrate English proficiency at B2\- C1 level or above. **Why Interlace Health?** * Work on meaningful solutions that directly impact patient care and healthcare operations * Join a collaborative, remote\-first engineering team committed to excellence and continuous improvement * Contribute to secure and scalable systems using modern DevOps and backend technologies * Enjoy flexibility and autonomy in a supportive and mission\-driven environment **Note:** This is a contract position with the potential for extension. The statements herein are intended to describe the general nature and level of work being performed but are not an exhaustive list of responsibilities or qualifications. Resumes must be submitted in English for consideration. Job Type: Full\-time Experience: * Node.js: 1 year (Required) * CI/CD : 4 years (Required) Language: * English (Required)