Explore 4 full stack java engineer jobs from 2 hiring companies in Hillsboro, IL, US. Filter by remote, salary, experience, and company, then open any listing to apply.

full-stack-java-engineer

Full Stack Java Engineer

Litchfield

Edwardsville

Springfield

Upper Alton

Godfrey

Taylorville

Alton

Collinsville

O'Fallon

Greenville

Glen Carbon

Chatham

Granite City

Spanish Lake

Highland

Fairview Heights

Old Jamestown

Shiloh

Troy

Full Stack Java Engineer Jobs

Netrist Solutions

UnitedHealth Group

Remote

Hybrid

We are seeking a Senior Full
Stack Developer (Backend Emphasis) to support a command and control system for
the Mobility Air Force. This role focuses on designing and maintaining mission
critical backend services in Java and .NET, building and securing RESTful APIs,
and implementing cloud native patterns in Amazon GovCloud. You will work across
the entire stack, but your primary responsibility will be backend architecture,
service reliability, data integrity, and integration with cloud services. You will operate within an
Agile environment and mentor junior developers while contributing to evolving
DevSecOps pipelines and secure deployment practices. <div> </div><h3>What you will do </h3><ul><li style="">Design, implement, test, and deploy backend features
 using Java and .NET in AWS GovCloud. </li><li>Lead the development of RESTful services, API
 endpoints, and backend integration patterns. </li><li style="">Architect and implement microservices, serverless
 functions, and containerized workloads using AWS services such as Lambda,
 ECS, EKS, Fargate, and API Gateway. </li><li style="">Build and optimize data models, SQL queries, and
 relational database operations. </li><li style="">Participate in architecture reviews, design sessions,
 and backlog refinement. </li><li style="">Conduct code reviews and refactor existing backend
 components for scalability, maintainability, and security. </li><li style="">Integrate backend services into CI/CD pipelines with
 automated builds, tests, and scans. </li><li style="">Ensure secure coding practices and interpret output
 from static and dynamic security analysis tools. </li><li style="">Use scripting languages, including Python and Bash, to
 automate operational and deployment tasks. </li><li style="">Troubleshoot complex backend issues across application
 logic, integrations, data stores, and cloud resources. </li><li style="">Mentor team members in API design, backend
 architecture, and secure coding patterns. </li></ul><div> </div><h3>What we like to see </h3><ul><li style="">Deep experience with Java and .NET development in
 production environments. </li><li style="">Strong understanding of REST API design, service
 versioning, and integration testing. </li><li style="">Experience deploying and managing backend services in
 AWS using Lambda, ECS, ECR, CloudFormation, RDS, S3, CloudWatch, and IAM. </li><li style="">Experience with microservices or modular service
 architectures. </li><li style="">Strong debugging skills in distributed systems. </li><li style="">Experience working within DoD or regulated environments
 with security compliance requirements. </li><li style="">Comfortable working with minimal day-to-day direction
 and accountable for end to end delivery. </li></ul><div> </div><h3>You should be familiar with </h3><ul><li style="">Java (Spring Boot or similar frameworks) and .NET (Core
 or Framework). </li><li style="">SQL and relational database design. </li><li style="">Linux administration and scripting. </li><li style="">Containerization with Docker and orchestration
 patterns. </li><li style="">CI/CD tooling such as Jenkins, GitHub Actions, or
 GitLab CI. </li><li style="">Cloud networking, IAM policies, and secure cloud
 deployment models. </li><li style="">Basic front end technologies for full stack
 integration, including HTML, CSS, and JavaScript. </li><li style="">OpenAPI Spec 3.x and automated code generation </li><li style="">Agile methodology. </li></ul> <h3>Requirements</h3><ul><li style="">Minimum Experience: 5+ years of professional
 development, including at least 3 years of Java development. </li><li style="">Experience owning backend services or components in
 production. </li><li style="">Bachelor’s degree in Computer Science, Engineering, or
 related field, or equivalent experience. </li><li style="">Ability to obtain or maintain a government security
 clearance. </li><li style="">Prior DoD or federal experience is strongly preferred. </li></ul><div> </div><div> </div>This
position is eligible for remote work in
the St. Louis area. However,
the position requires a government security clearance, so candidates must be U.S. citizens and eligible for work without a visa sponsorship. <h3>Benefits</h3><ul class="wp-block-list" style="color:rgb(23, 27, 39); font-family:PuviRegular, sans-serif; font-size:14px; font-style:normal; font-weight:400; letter-spacing:normal; orphans:2; text-indent:0px; text-transform:none; widows:2; word-spacing:0px; white-space:normal; background-color:rgb(255, 255, 255)"><li>Competitive Salary </li><li>Paid Time Off </li><li>Paid Federal Holidays </li><li>401K with matching </li><li>100% Paid Medical, Dental, Vision, Long &amp; Short Term Disability, and Basic Life </li><li>Flexible Spending Account </li><li>Health Reimbursement Arrangement </li><li>Work From Home Options </li><li>Education Assistance </li></ul><div> </div>

Senior Full Stack Developer - Back End

Full Stack Developer

5+ years of professional development; 3+ years in Java; backend ownership in production; DoD/federal experience preferred; government clearance required.

We are seeking a Senior Full
Stack Developer (Frontend Emphasis, React.js) to build and sustain a mission
critical command and control system for the Mobility Air Force. Your work will
focus on developing modern single page applications using React.js and
TypeScript, improving the user experience, and ensuring seamless integration
with secure backend APIs. You will contribute across the stack, but your
specialization will be front end architecture, UI performance, and maintainable
component development. You will collaborate closely
with backend developers, guide UI design decisions, and mentor junior engineers
within an Agile development environment. <h3>What you will do </h3><ul> <li style="">Design, implement, test, and deploy single page
 applications built with React.js and TypeScript. </li><li style="">Participate in front end architecture decisions,
 including state management, component structure, routing, and build
 configuration. </li><li style="">Develop reusable UI components, forms, and interactive
 views aligned with mission workflows. </li><li style="">Integrate React applications with Java and .NET backend
 services and RESTful APIs. </li><li style="">Build automated tests for the UI, including unit,
 integration, and end to end tests. </li><li style="">Ensure accessibility, responsiveness, and adherence to
 modern UI best practices. </li><li style="">Optimize performance through code splitting, lazy
 loading, and efficient rendering strategies. </li><li style="">Implement secure front end patterns, including
 dependency hygiene, API input validation, and token handling. </li><li style="">Review and refactor front end code to ensure
 maintainability and consistent patterns. </li><li style="">Mentor team members on React, TypeScript, testing
 strategies, and SPA architecture. </li></ul><div> </div><h3>What we like to see </h3><ul> <li style="">Strong proficiency with React.js, TypeScript, SPA
 architecture, and modern JavaScript tooling. </li><li style="">Experience with front end state management solutions
 such as Redux, Zustand, Recoil, or Context APIs. </li><li style="">Familiarity with build tools such as Webpack, Vite,
 Babel, or similar. </li><li style="">Experience consuming RESTful APIs and collaborating
 with backend developers to shape API contracts. </li><li style="">Understanding of accessibility and compliance standards
 common in government systems. </li><li style="">Experience deploying front end applications to AWS
 services such as S3, CloudFront, API Gateway, and Cognito. </li><li style="">Strong troubleshooting skills in UI performance,
 rendering, and cross browser compatibility. </li><li style="">Self directed with the ability to own features from
 concept to production. </li></ul><div> </div><h3>You should be familiar with </h3><ul> <li style="">HTML, CSS, JavaScript, and TypeScript. </li><li style="">React.js, React Router, and component-based
 architecture. </li><li style="">SPA security patterns for authenticated applications. </li><li style="">Modern front end testing frameworks such as Jest, React
 Testing Library, and Cypress. </li><li style="">RESTful API integration patterns. </li><li style="">Basic backend development in Java or .NET for full
 stack feature work. </li><li style="">Containerization concepts using Docker. </li><li style="">CI/CD practices for building, testing, and deploying
 front end assets. </li><li style="">Agile methodology. </li></ul><div> </div> <h3>Requirements</h3><ul><li style="">Minimum Experience: 5+ years of professional software
 development, including substantial front-end experience with React.js. </li><li style="">Experience owning front end architecture or major UI
 components in production SPA applications. </li><li style="">Bachelor’s degree in Computer Science, Engineering, or
 related field, or equivalent experience. </li><li style="">Ability to obtain or maintain a government security
 clearance. </li><li style="">Prior DoD or federal experience is strongly preferred. </li></ul>&nbsp; <div>This position is eligible for
remote work in the St. Louis area. However, the position
requires a government security clearance, so candidates must be U.S. citizens and eligible for work without a visa sponsorship </div> <h3>Benefits</h3><ul class="wp-block-list" style="color:rgb(23, 27, 39); font-family:PuviRegular, sans-serif; font-size:14px; font-style:normal; font-weight:400; letter-spacing:normal; orphans:2; text-indent:0px; text-transform:none; widows:2; word-spacing:0px; white-space:normal; background-color:rgb(255, 255, 255)"><li>Competitive Salary </li><li>Paid Time Off </li><li>Paid Federal Holidays </li><li>401K with matching </li><li>100% Paid Medical, Dental, Vision, Long &amp; Short Term Disability, and Basic Life </li><li>Flexible Spending Account </li><li>Health Reimbursement Arrangement </li><li>Work From Home Options </li><li>Education Assistance </li></ul><div> </div>

Senior Full Stack Developer - Front End

5+ years of professional software development; senior-level frontend focus with React.js and TypeScript; ability to obtain government security clearance; DoD/federal experience preferred.

%3Cp class=%22MsoNormal%22%3E%3Cspan style=%22background-color:white;color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan class=%22normaltextrun%22 style=%22line-height:115%;mso-color-alt:windowtext;%22%3EOptum is a global organization that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by diversity and inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health equity on a global scale. Join us to start%26nbsp;%3C/span%3E%3C/span%3E%3Cspan style=%22background-color:inherit;color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan style=%22-webkit-tap-highlight-color:transparent;-webkit-text-stroke-width:0px;-webkit-user-drag:none;font-variant-caps:normal;font-variant-ligatures:none !important;orphans:2;text-decoration-color:initial;text-decoration-style:initial;text-decoration-thickness:initial;user-select:text;widows:2;word-spacing:0px;%22 data-contrast=%22auto%22 xml:lang=%22EN-US%22%3E%3Cstrong%3ECaring. Connecting. Growing together.%3C/strong%3E%3C/span%3E%3C/span%3E%3Cspan style=%22background-color:white;color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan class=%22eop%22 style=%22-webkit-tap-highlight-color:transparent;-webkit-text-stroke-width:0px;-webkit-user-drag:none;font-variant-caps:normal;font-variant-ligatures:normal;line-height:115%;mso-color-alt:windowtext;orphans:2;text-decoration-color:initial;text-decoration-style:initial;text-decoration-thickness:initial;user-select:text;widows:2;word-spacing:0px;%22%3E%26nbsp;%3C/span%3E%3C/span%3E%3C/p%3E%3Cp class=%22MsoNormal%22 style=%22line-height:106%;mso-add-space:auto;mso-margin-bottom-alt:auto;mso-margin-top-alt:auto;%22%3E%3Cspan style=%22color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan style=%22mso-fareast-font-family:%26quot;Times New Roman%26quot;;mso-font-kerning:0pt;mso-ligatures:none;%22%3EIf you would like to be part of a well-rounded solution throughout all phases from production to support, we want to talk to you. If you are an independent self-starter, work well within an integrated team, have a strong sense of ownership and are obsessed by solving customer use cases and scenarios using best practices and cloud technologies, we want to talk to you!%3C/span%3E%3C/span%3E%3C/p%3E%3Cp class=%22MsoNormal%22 style=%22line-height:106%;mso-add-space:auto;mso-margin-bottom-alt:auto;mso-margin-top-alt:auto;%22%3E%3Cspan style=%22color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan style=%22line-height:106%;mso-fareast-font-family:%26quot;Times New Roman%26quot;;mso-font-kerning:0pt;mso-ligatures:none;%22%3EYou will enjoy the flexibility to telecommute* from anywhere within the U.S. as you take on some tough challenges.%3C/span%3E%3C/span%3E%3C/p%3E%3Cp class=%22MsoNormal%22 style=%22line-height:106%;mso-add-space:auto;mso-margin-bottom-alt:auto;mso-margin-top-alt:auto;%22%3E%3Cspan style=%22color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan style=%22line-height:106%;mso-fareast-font-family:%26quot;Times New Roman%26quot;;mso-font-kerning:0pt;mso-ligatures:none;%22%3E%3Cstrong%3EPrimary Responsibilities:%3C/strong%3E%3C/span%3E%3C/span%3E%3C/p%3E%3Cul style=%22margin-top:0in;%22 type=%22disc%22%3E%3Cli class=%22MsoNormal%22 style=%22line-height:106%;margin-bottom:0in;margin-top:0in;mso-add-space:auto;mso-list:l0 level1 lfo1;mso-margin-bottom-alt:8.0pt;mso-margin-top-alt:0in;tab-stops:list .5in;%22%3E%3Cspan style=%22color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan style=%22mso-fareast-font-family:%26quot;Times New Roman%26quot;;mso-font-kerning:0pt;mso-ligatures:none;%22%3EClient-facing portal provides the necessary services that are critical to day-to-day management of documents by the clients and provides as window to what is happening in the backend as files are being processed from reception to composition to release, print and mail%3C/span%3E%3C/span%3E%3C/li%3E%3Cli class=%22MsoNormal%22 style=%22line-height:106%;margin-bottom:0in;margin-top:0in;mso-add-space:auto;mso-list:l0 level1 lfo1;mso-margin-bottom-alt:8.0pt;mso-margin-top-alt:0in;tab-stops:list .5in;%22%3E%3Cspan style=%22color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan style=%22mso-fareast-font-family:%26quot;Times New Roman%26quot;;mso-font-kerning:0pt;mso-ligatures:none;%22%3EHaving this person on staff is critical to our ability to cater to upgrade, maintain and be compliant%3C/span%3E%3C/span%3E%3C/li%3E%3Cli class=%22MsoNormal%22 style=%22line-height:106%;mso-add-space:auto;mso-list:l0 level1 lfo1;mso-margin-bottom-alt:auto;mso-margin-top-alt:auto;tab-stops:list .5in;%22%3E%3Cspan style=%22color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan style=%22mso-fareast-font-family:%26quot;Times New Roman%26quot;;mso-font-kerning:0pt;mso-ligatures:none;%22%3EAre you passionate about building and maintaining enterprise-class full stack solutions using the latest API and Portal technologies and current development best practices%3C/span%3E%3C/span%3E%3C/li%3E%3Cli class=%22MsoNormal%22 style=%22line-height:106%;margin-bottom:0in;margin-top:0in;mso-add-space:auto;mso-list:l0 level1 lfo1;mso-margin-bottom-alt:8.0pt;mso-margin-top-alt:0in;tab-stops:list .5in;%22%3E%3Cspan style=%22color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan style=%22mso-fareast-font-family:%26quot;Times New Roman%26quot;;mso-font-kerning:0pt;mso-ligatures:none;%22%3EThis position requires a good understanding of enterprise’s best practices, regulatory compliance, and customer persona(s). The ability to learn new technologies, integrate them with existing enterprise management tools and compliance frameworks, and the skill to leverage them to the maximum extent is a key component of this position. We are striving for maximum compatibility with current health care products and services as well as new cloud enterprise technologies and best practices%3C/span%3E%3C/span%3E%3C/li%3E%3Cli class=%22MsoNormal%22 style=%22line-height:106%;margin-bottom:0in;margin-top:0in;mso-add-space:auto;mso-list:l0 level1 lfo1;mso-margin-bottom-alt:8.0pt;mso-margin-top-alt:0in;tab-stops:list .5in;%22%3E%3Cspan style=%22color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3EAI User: %3C/span%3E%3Cspan style=%22background-color:white;color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan class=%22normaltextrun%22 style=%22line-height:106%;mso-color-alt:windowtext;%22%3ELeverage enterprise-approved AI tools to enhance productivity and innovation by streamlining workflows and automating repetitive tasks. Evaluate emerging trends to drive continuous improvement and strategic innovation%3C/span%3E%3C/span%3E%3C/li%3E%3C/ul%3E%3Cp class=%22MsoNormal%22 style=%22background-color:white;line-height:normal;margin-bottom:9.0pt;vertical-align:middle;%22%3E%3Cspan style=%22color:black;font-family:Tahoma, Geneva, sans-serif;font-size:10px;%22%3E%3Cspan style=%22mso-fareast-font-family:%26quot;Times New Roman%26quot;;mso-font-kerning:0pt;mso-ligatures:none;%22%3EYou’ll be rewarded and recognized for your performance in an environment that will challenge you and give you clear directions on what it takes to succeed in your role as well as provide development for other roles you may be interested in.%3C/span%3E%3C/span%3E%3C/p%3E 
Required Qualifications:<ul type="disc"><li class="MsoNormal">Bachelor’s Degree in Computer Science, Engineering, or a related field</li><li class="MsoNormal">10+ years of overall software engineering experience</li><li class="MsoNormal">10+ years of experience in software solution development</li><li class="MsoNormal">5+ years of experience in solution development utilizing Microsoft Technologies</li><li class="MsoNormal">5+ years of experience in application development in an AWS environment utilizing AWS services</li><li class="MsoNormal">5+ years of experience in Relational Database Management systems, especially Microsoft SQL database application development</li><li class="MsoNormal">Advanced level of proficiency in one or more modern programming languages such as C#, Golang, Node.js, Java</li></ul>Preferred Qualifications: <ul type="disc"><li class="MsoNormal">Proficiency with .Net Framework, C#, .net Core, Python, C++</li><li class="MsoNormal">Proficiency with Rest API </li><li class="MsoNormal">Experience/Proficiency with AWS Services such as SNS, SQS, Lambda, RDS, CloudWatch</li><li class="MsoNormal">Proficiency in SQL based database application development</li><li class="MsoNormal">Proficiency with Agile Scrum SDLC</li><li class="MsoNormal">Proficiency with CI/CD tools/processes (Git/Jenkins/Jfrog /Sonar/codql/Nunit preferably)</li></ul>Soft Skills:<ul type="disc"><li class="MsoNormal">Proven oral and written communication Skills</li><li class="MsoNormal">Proven ability to demonstrate excellent problem-solving skills</li><li class="MsoNormal">Proven ability to leverage AI tools to expedite development and improve quality</li></ul>*All Telecommuters will be required to adhere to UnitedHealth Group’s Telecommuter Policy. Pay is based on several factors including but not limited to local labor markets, education, work experience, certifications, etc. In addition to your salary, we offer benefits such as, a comprehensive benefits package, incentive and recognition programs, equity stock purchase and 401k contribution (all benefits are subject to eligibility requirements). No matter where or when you begin a career with us, you’ll find a far-reaching choice of benefits and incentives. The salary for this role will range from $91,700 to $163,700 annually based on full-time employment. We comply with all minimum wage laws as applicable.   Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.  Application Deadline: This will be posted for a minimum of 2 business days or until a sufficient candidate pool has been collected. Job posting may come down early due to volume of applicants.      At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone–of every race, gender, sexuality, age, location, and income–deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups, and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes — an enterprise priority reflected in our mission.          UnitedHealth Group is an Equal Employment Opportunity employer under applicable law and qualified applicants will receive consideration for employment without regard to race, national origin, religion, age, color, sex, sexual orientation, gender identity, disability, or protected veteran status, or any other characteristic protected by local, state, or federal laws, rules, or regulations.     UnitedHealth Group is a drug - free workplace. Candidates are required to pass a drug test before beginning employment.       #RPO #GREEN

Senior Software Engineer

Senior software engineer with 10+ years of experience, strong full-stack and cloud skills (AWS), Microsoft technologies, and SQL development.

Senior software engineer with 10+ years of experience; strong enterprise full-stack development, AWS, Microsoft technologies, and SQL experience; proficient in Rest API and CI/CD; capable of leveraging AI tools.

Full Stack Java Engineer Jobs in Hillsboro, IL, US

Full Stack Java Engineer Jobs market signals in Hillsboro, IL, US

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