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JOB TYPE: Freelance, Contract Position (no agencies/C2C - see notes below) LOCATION: Remote - San Francisco, US Only  HOURLY RANGE: Our client is looking to pay $110 – $130/hr ESTIMATED DURATION: 40hr/week - Long-term

THE OPPORTUNITY Must be knowledgeable in Spring Boot and have good knowledge of available libraries and have a POV on REST Template vs. Web Client. Please only propose if you are an expert in Spring Boot. **Please attach resumeThe senior back-end engineer is responsible for creating components and features on the server-side, indirectly accessed by a user through a front end application or system. This includes creating, maintaining, testing, and debugging the entire back end. This also includes the core application logic, databases, data and application integration, API, and other processes taking place behind the scenes. As a member of a product team, the senior back-end engineer prioritizes work in collaboration with product managers and agile leads. Responsibilities & DutiesThe Sr. Back-End Engineer is responsible for:- Working with architects and other engineers to develop detailed solution designs- Similarly, working with architects / engineers to identify and develop design patterns / reference architectures- Work with product managers and other subject matter experts to validate requirements and related designs- Identify, define, and grooming of developer stories and collaboration with product owners / scrum master to prioritize and plan- Implementation of re-usable components and reference implementations (when needed)- Design and development of application layer, domain driven APIs, and other back-end functions (e.g., databases, orchestrations, etc.)- Work with QA / test team to define and develop test plans, suites, cases- May develop and deploy infrastructure as code and other automations to support operations and testing- Proactively ensure inidual code quality (e.g., well organized, properly formatted, etc.)- May conduct some level of testing (e.g., unit testing, integration testing)- Periodically monitoring logs and other indicators of system health / performance to identify optimization opportunities- Troubleshooting, eliminating bugs / defects, and making optimizations throughout the application lifecycle- Contributing to documentation throughout the application lifecycle Qualifications & Skills - At least 8 years of experience in software engineering / app development- Five or more years of experience as a Java programmer building back-end services- Experience building microservice-based consumer facing applications on the cloud- Industry experience is a plusAcademics & Certifications- Undergraduate degree in computer science, engineering, or another technical field (must have)- Java Spring Certification and / or AWS Certified Developer are a plus Critical Skills Technical- Expertise in microservices architecture patterns, domain modeling, and service design- Fluent in Java programming language, related best practices, and object oriented design- Expertise in Spring Boot, Spring Security, Reactive, WebClient and RestTemplate- Proficient in tools like Git, Maven, and Gradle and source code management best practices- Expertise in industry standard protocols related to security, particularly OAuth / OIDC- Practical experience with specific AWS services: ECS, Fargate, CodePipeline, Lambda, SQS, SNS, S3, PostgreSQL, DynamoDB, MongoDB- Expertise in Typescript is a plus- Expertise with other AWS services (e.g., API Gateway, Step Functions) is a plus Non-Technical- Well versed in agile methodologies and tools (Scrum, Kanban, Jira, Confluence)- Strong communication and teamwork skills to collaborate daily with team members, stakeholders, and other technology partners in an agile environment- Strong organizational and documentation skills is a plus- Knowledge of C4 method, UML, and other diagrammatic techniques is a plus