• API Development: Design, build, and maintain RESTful APIs using .NET C#, focusing on performance, reliability, and security. • Entity Framework & SQL: Develop efficient data models using Entity Framework Core, and write optimized SQL queries for relational databases like SQL Server. • Cloud Transition Support: Contribute to new development efforts that utilize Azure services (e.g., Azure Functions, App Services, Azure SQL) as we begin migrating from on-prem infrastructure. • Machine Learning Integration: Collaborate with stakeholders to integrate machine learning models via RESTful APIs or Azure ML services. • Clean, Maintainable Code: Follow best practices to write testable, maintainable, and well-documented code. • Cross-Team Collaboration: Work closely with fellow developers and business partners to deliver secure, scalable solutions. • CI/CD Practices: Support continuous integration and delivery efforts using tools like GitHub Actions. • Problem Solving: Investigate and resolve performance issues, bugs, and bottlenecks in existing systems.

• Develop and maintain APIs and backend services using Node.js and TypeScript. • Integrate with and consume RESTful APIs, ensuring performance and security. • Work with modular architecture and Domain-Driven Design (DDD). • Design and manage SQL databases (Postgres). • Participate in technical decision-making and contribute to the evolution of system architecture. • Create and maintain CI/CD pipelines using Azure DevOps. • Implement development best practices with mandatory TDD, including DDD and Hexagonal Architecture (Ports & Adapters). • Monitor and optimize application performance using OpenTelemetry.

This description is a summary of our understanding of the job description. Click on 'Apply' button to find out more. Role Description Harmonia Holdings is seeking a skilled Application Programmer / Java Developer to support a federal government client in a dynamic, agile development environment. This role is responsible for participating in all phases of the software development lifecycle, including: - Requirements analysis - Design - Development - Testing - Deployment - Maintenance of enterprise applications The Application Programmer will develop, test, and maintain applications using Java and modern web technologies while working in a continuous integration and continuous delivery (CI/CD) environment. Responsibilities include: - Conducting software analysis, programming, debugging, implementing unit tests, remediating SonarQube findings, and developing technical documentation. - Periodically assisting with Help Desk troubleshooting and resolution of end-user issues. Qualifications - US citizenship is required with the ability to obtain and maintain a Public Trust clearance. - Bachelor’s degree in Computer Science or related field. - 5+ years of experience in application development and/or Java development. - Strong proficiency in Java (Java 8+), Spring Boot, and RESTful web services. - Experience with MVC architecture and JDBC. - Proficiency with front-end technologies including React (18+), Angular, JavaScript/TypeScript, HTML, CSS, and JSON. - Experience with Node.js (22+), Struts 2, Maven, and JQuery. - Familiarity with messaging and streaming technologies such as MQ or Kafka. - Experience with Oracle 19c, PostgreSQL, DynamoDB, and SQL optimization. - Experience working in Windows and Linux environments. - Knowledge of AWS services including EC2, CloudWatch, load balancers, and serverless architectures. - Experience with infrastructure automation tools such as Terraform and RedHat Ansible Automation Platform. - Experience with CI/CD tools such as Jenkins/CloudBees and version control systems such as Git. - Familiarity with monitoring tools such as AppDynamics and DataDog. - Knowledge of application frameworks, microservices architecture, containerization (Docker/Kubernetes), and cross-platform interoperability. - Strong communication, teamwork, and organizational skills. Requirements - Current DHS/ICE Public Trust Suitability. Benefits - Traditional and HSA-eligible medical insurance plans - 100% employer-paid dental and vision insurance options - 100% employer-sponsored STD, LTD, and life insurance - 5% 401(k) company matching - Flexible schedules and teleworking options - Paid holidays and PTO Accrual Plans - Paid Parental Leave - Professional development and career growth opportunities - Team and company-wide events, recognition, and appreciation - And so much more!

Overview Impact the Moment At McGraw Hill we create best-in-class, next-generation learning platforms that are used by millions of students and educators worldwide every day. We design intuitive and effective tools and experiences that maximize teachers’ time and students’ learning. And we do all of this in a supportive and collaborative environment where we work alongside brilliant colleagues, touch lives around the world, see the difference our hard work makes, and continue our paths of lifelong learning Your Impact on Team The Assess Engineering team is looking for experienced, smart, and adaptable Software Engineer to join the engineering team. The key trait is thought leadership through problem solving: This individual must exhibit independent creativity, a curiosity to research new technologies and methodologies, and a pervasive desire to dig into complex technical issues while respecting timelines and team commitments. This position will primarily focus on building the next set of platform capabilities in our K-12 Assessment platform. This will overall support instruction for our newest programs and products at McGraw Hill. This is a remote position open to applicants authorized to work for any employer within the United States. What You’ll Do: - Use your interpersonal skills and ability to collaborate effectively with product sponsors and senior leadership in engineering and business - Analyze business requirements and identify possible gaps, ambiguities, missing scenarios, etc. - Design and implement sound engineering solutions that meet the business need - Work with a distributed team to solve problems quickly and collaboratively - Present a passion for building high-quality, user-friendly, scalable APIs and data-centric backend processes About You: - You have demonstrated software delivery experience with a distributed product & engineering team - 2+ years working with languages such as Node.js, Go, or Java - You can work in a fast-paced software release environment, where you deliver production-grade (zero downtime, fault-tolerant, etc.) software daily for a system with millions of users - You can contribute to the full software development life cycle – including writing application code, writing unit/integration/automation tests, documentation and performance engineering - You are excited about building scalable, performant APIs Our Stack includes: - Node.js, .NET Core, Java, Go - TypeScript, Angular, React - Github Actions, Docker, Kubernetes - Amazon Web Services – S3, RDS, Lambda and others - Github - JIRA, Confluence, Zoom, Slack Applied knowledge of the following: - RESTful Web Services (experience producing and consuming REST services) - Frontend development with - Relational database design concepts (PostgreSQL, MySQL) - Application Testing (unit, integration, performance, end to end) for full user journeys - Cloud Technologies (preferably Amazon Web Services – RDS, S3, others) - Code Quality and Code Review - Ability to write adhoc SQL queries and scripts to analyze usage and performance data - Build/deploy tools (Github Actions, npm) - Source/Version control systems (Git) Why McGraw Hill? The work you do at McGraw Hill will be work that matters. We are collectively designing content that will build the future of education. Play your part and experience a sense of fulfilment that will inspire you to even greater heights. The pay range for this position is between $93,950 - $128,000 annually. However, base pay offered may vary depending on job-related knowledge, skills, experience, and location. An annual bonus plan may be provided as part of the compensation package, in addition to a full range of medical and/or other benefits, depending on the position offered. Click here to learn more about our benefit offerings. McGraw Hill recruiters always use a “@mheducation.com” or "@careers.mheducation.com” mail address and/or from our Applicant Tracking System, iCIMS. Any variation of this email domain should be considered suspicious. Additionally, McGraw Hill recruiters and authorized representatives will never request sensitive information in email. 50519