Mid level Java Developer

Full Stack Developer (UI focused) Washington, DC u2013 hybrid (3 days a week onsite) Candidates must be able to work without sponsorship Must be able to obtain Public Trust clearance 6 month contract System One is seeking a mid-level Full Stack Developer to work for a large government contractor. This is your opportunity to work with a highly talented team that builds technology for the community needs. Our client engagement processes, the way we collaborate, operate, and deliver value provides an unparalleled opportunity to grow and advance. Choose us and make delivering innovative work part of your extraordinary career. Goal of the work: Rewrite of one their our old apps. A full stack developer who is strong on the UI front using Angular, React, and or Bootstrap. We need someone who sees the old code and wants and knows how to fix it. Education and Experience Requirement: u2022 Undergraduate degree (BA/BS), preferably in a technical discipline u2022 5+ yearsu2019 experience with modern software development Requirements/Responsibilities: u2022 Demonstrated knowledge and experience with modern software development (e.g., Java (J2EE), Python script, JavaScript, SQL, T-SQL, Linux Shell script, JSP, etc. as part of a development team utilizing strict configuration management practices e.g., git, Bitbucket, Gitlab, GitHub). u2022 Provide design and development expertise in support of both new application development and application support/maintenance tasks. u2022 Support several applications and be responsible for all phases of the build process from planning to design, development, release, and support. u2022 Identify and implement development standards and best practices. u2022 Conduct solution analyses and provide recommendations on application improvements. u2022 Deliver development artifacts as required by the customer. u2022 Adhere to the client configuration management control and QA policies. u2022 Demonstrate strong analytical, troubleshoot, and problem-solving skills. Requirements: u2022 Experience in providing technical recommendations and strategic planning insights. u2022 Experience with modern web application development to include JavaScript, Node.js, Angular or React. u2022 Experience with Microsoft Databases u2022 Experience with AWS - Cloud Technologies u2022 Experience with Microsoft SQL and T-SQL u2022 Experience with industry standard build, packaging, and deployment tools such as Gitlab, Maven, and ANT u2022 Experience with at least one lightweight scripting language, e.g. Perl, Bash, Python u2022 Experience in using web frameworks such as AJAX, Struts, Hibernate, Bootstrap and Spring, etc. u2022 Experience in creating and using EJBs u2022 Shell scripting experience in major operating system, e.g., Windows and Linux. u2022 Provide web-based application development support in Java for a range of custom-built applications. u2022 Excellent oral and written communication skills. u2022 Familiar with Atlassian toolset (Jira, Confluence, Crucible) u2022 Experience with Crystal Reports u2022 Experience with OpenShift and Okta u2022 Ability to obtain and maintain Public Trust clearance. Nice to Have: u2022 Experience with Agile Scrum or similar methodology u2022 Experience with DevSecOps and/or CI/CD u2022 Experience with SQL Server Integration Services (SSIS) and SSIS package u2022 Familiar with Data Warehouse ETL u2022 Familiar with Load Testing tool (Apache JMeter or LoadRunner) System One, and its subsidiaries including Joulu00e9 and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M1 #LI-VH1 Ref: #851-Rockville-S1 System One, and its subsidiaries including Joulu00e9, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible full-time employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

Created: 2026-05-07