Software Engineer

Job Description

Job DescriptionSalary: $110,000 - 115,000

Custom Software Systems, Inc. (CSS) is seeking a highly skilled Software Engineer to architect, build, and maintain enterprise-scale applications using modern Java technologies and event-driven design principles. This role is ideal for a technically strong engineer with hands-on experience in Spring Boot microservices, message-broker integration, and modern front-end development, who can translate complex requirements into scalable, maintainable software solutions within a secure, containerized environment.

Responsibilities

• Collaborate with cross-functional teams to architect, design, and implement enterprise software solutions.

• Apply event-driven architecture principles to develop scalable, resilient, and loosely coupled applications.

• Develop microservices using Spring Boot and associated Spring frameworks.

• Build response and maintainable user interfaces using React.
• Provide strong technicalexpertiseinPrimeFaces6.0 and above, includingcomponentusage, customization, and integration within Java Server Faces (JSF) applications.
• Implement message queuing and event streaming using RabbitMQ.

• When experience is based on Kafka,demonstrateunderstanding of architectural and operational differences between Kafka and RabbitMQ.
• Develop message producers, consumers, routing logic, and related integration components.
• Deploy microservices to Kubernetes clusters using automated CI/CD pipelines.

• Monitor, diagnose, and troubleshoot production systems to ensure reliability and uptime.
• Perform performance tuning and scalability optimization across application and infrastructure layers.
• Write unit tests with a target of 85% or greater code coverage.

• Participate in peer code reviews to enforce coding standards and best practices.
• Conduct system testing, debugging, and validation activities.
• Prepare technical specifications, architecture documentation, and design decision records.

• Produce sequence diagrams for major use cases as part of design deliverables.

• Collaborate with product managers, designers, and engineering teams to refine requirements andensurealignment on deliverables.

• Reporting Requirements (in a JIS prescribed format)

• Submit weekly activity reportsto summarizeprogress on assigned programs and projects.

• Provide weekly project status reports in the JIS-prescribed format.

• Complete weekly time reporting using JIS-provided forms, along with anyadditionalreports requested by the supervising manager.

• Apply event-driven architecture (EDA) principles to design scalable and resilientsystems.

• Demonstrate high-level Java competency, including strong understanding of core libraries, concurrency, collections, JVM fundamentals, and modern Java features.

• Analyze complex technical challenges and propose effective, maintainable solutions.

• Develop andmaintainapplications usingPrimeFaces6.x and above, includingcomponentcustomization and JSF integration.

• Produce clean, maintainable, and testable code aligned with industry best practices.

• Collaborate effectively within Agile or hybrid development teams.
  

Clearance

• Mustbe clearable.

Citizenship

• US Citizenship

Required Qualifications

• Core Java: 8+ years of high-level competency (concurrency, JVM fundamentals, modern Java features).

• Backend Frameworks: 4+ years of development using Spring Boot and associated frameworks.

• Frontend Development: 4+ years building responsive interfacesutilizingReact and/or Angular.

• Messaging & Streaming: 4+ years implementing message queuing and event streaming using RabbitMQ or Kafka.

• Must have three (3) years of experience as a software engineer.

• Specialized Experience: At least two (2) years of experience working with Ada, SQL, or third/fourth generation languages in the design and implementation of systems.

• One (1) year working with DBMS

Education

• ABachelor's Degreefrom an accredited college or university with a major in Computer Science, Information Systems, Engineering, Business, or other related scientific or technical discipline, or three (3) years of equivalent experience in a related field.

Knowledge, Skills & Abilities

• Data & Security: Experience with RESTful APIs, secure coding principles, and both Relational/NoSQLdatabase.

• Infrastructure:Proficiencywith Kubernetes, Docker, and CI/CD pipelines.

• Legacy Integration: Ability tomaintainapplications usingPrimeFaces6.x and JSF.

• Architecture: Knowledge of design patterns and Event-Driven Architecture (EDA).

Preferred Qualifications

• Modern front-end development using React and/or Angular for building responsive, component-based user interfaces.

• Message-queuing and event-streaming technologies, including RabbitMQ or Kafka, for distributed system communication.

• Elasticsearch for indexing, search, and analytics (preferred but not mandatory).

• Microservices development using Spring Boot or equivalent Java frameworks.

• Cloud platforms such as AWS, Azure, or Google Cloud for deployment, monitoring,

• and scaling (preferred but notrequired).

• DevOps and source control tools, including Git, CI/CD pipelines, and automated

• build processes.

• Software design patterns and architectural best practices, with the ability to apply them appropriately.

• Containerization and orchestration techniques, including Kubernetes and Docker.

• RESTful API design, web services, and integration patterns.

• Relational and NoSQL databases, such as PostgreSQL, MySQL, MongoDB, or Cassandra.

• Application performance tuning, monitoring, and observability tools (e.g., Prometheus, Grafana, ELK stack).

• Security best practices, including authentication, authorization, and secure coding principles