Explore 3 senior java developer jobs from 3 hiring companies in Belleville, KS, US. Filter by remote, salary, experience, and company, then open any listing to apply.

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Senior Java Developer

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Senior Java Developer Jobs

GitHub

UnitedHealth Group

Vecima Networks

Hybrid

Onsite

Remote

Optum 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 inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health optimization on a global scale. Join us to start Caring. Connecting. Growing together. Primary Responsibilities:<ul><li>AI-First Mindset<ul><li>Leverage AI tools and AI Agents in daily development workflows</li><li>Demonstrate  understanding of Retrieval-Augmented</li><li>Generation (RAG) and Agentic AI concepts</li><li>Use GitHub Copilot and other AI-powered tools to accelerate software development</li><li>Advocate for and promote an AI-first culture across engineering and product teams</li></ul></li><li>Design and Development<ul><li>Design, develop, and maintain robust web applications using Java, Apache/Tomcat, and associated frameworks</li><li>Implement and optimize CI/CD pipelines using Maven, Git, and automated testing tools</li><li>Ensure high-quality code delivery, performance optimization, and maintainable architecture</li></ul></li><li>Cloud and Infrastructure<ul><li>Architect, deploy, and maintain scalable solutions on AWS with a  focus on cost optimization</li><li>Manage and troubleshoot Linux-based environments for application hosting, monitoring, and operations</li><li>Ensure reliability, resilience, and performance of cloud-deployed applications</li></ul></li><li>Leadership and Collaboration<ul><li>Lead technical discussions, provide guidance, and mentor junior engineers</li><li>Drive and enforce engineering best practices across teams</li><li>Collaborate with cross-functional partners - including Product, QA,</li><li>Security, and Operations - to align technology choices with business goals</li></ul></li><li>Quality and Security<ul><li>Ensure compliance with security standards and implement proactive vulnerability management strategies</li><li>Conduct thorough code reviews and enforce secure, maintainable coding standards</li><li>Partner with security and QA teams to ensure robust testing and threat mitigation</li></ul></li><li>Comply with the terms and conditions of the employment contract, company policies and procedures, and any and all directives (such as, but not limited to, transfer and/or re-assignment to different work locations, change in teams and/or work shifts, policies in regards to flexibility of work benefits and/or work environment, alternative work arrangements, and other decisions that may arise due to the changing business environment). The Company may adopt, vary or rescind these policies and directives in its absolute discretion and without any limitation (implied or otherwise) on its ability to do so</li></ul> 
Required Qualifications:<ul><li>Experience or knowledge in Agile methodologies</li><li>Experience or knowledge in Full Stack Development</li><li>Experience or knowledge in Ansible and Jenkins for CICD</li><li>AI-Powered Solutions Development - Experience in developing and deploying AI-powered solutions using no-code, low-code, and advanced platforms, translating business needs into scalable solutions</li><li>AI technologies exposure</li><li>Technical Skills Solid knowledge Java and React, Cloud platform - Azure</li><li>Proven solid programming and algorithmic skills</li></ul> 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.

Senior Software Engineer I

Experience with full stack development, AI-driven solutions, and cloud-platform experience; strong Java/React skills; CI/CD with Ansible/Jenkins; Agile experience.

Vecima Networks is leading the global evolution to the multi-gigabit, content-rich networks of the future. Our talented people deliver future-ready software, services, and integrated platforms that power broadband and video streaming networks, monitor and manage transportation, and transform experiences in homes, businesses, and everywhere people connect. We help our customers evolve their networks with cloud-based solutions that deliver ground-breaking speed, superior video quality, and exciting new services to their subscribers. Learn more at vecima.com.
JD Key Responsibilities:
<ul>
<li>Work closely with product manager on SW design & implementation and technical requirement clarifying</li>
<li>Product level performance/resource trade-off design, bridge hardware team and SW team toward innovative & cost-effective products.</li>
<li>Responsible for clean code with automatic UT and SST cases</li>
<li>Responsible for document review, code review, test user case review</li>
<li>Responsible for early defect detection and delivery with high quality</li>
<li>Responsible for product maintenance</li>
</ul>
 
Qualification:
<ul>
<li>5+ years of working experience in broadband access industry – (switching, CMTS) data/control path or GPON & XGS PON.</li>
<li>Experience and knowledge of GPON & XGS-PON or access technologies is strongly preferred (IPv4/IPv6, L2/L3 network functions, VPN, QoS, Security, Multicast, CPE Subscriber Management, DHCP v4/v6, VLAN management, DHCP relay functions etc.)</li>
<li>Versed in C++/JAVA Object Oriented programming, etc. OO design is preferred;</li>
<li>Capability in clean coding, debugging and problem solving;</li>
<li>Knowledge of system redundancy and hot switch over is preferred.</li>
<li>Experience with the alarm, system fault diagnosis and system management is preferred.</li>
<li>Fluency in English and good communication skills;</li>
<li>Good teamwork spirit, Creative and Initiative.</li>
<li>Experienced in using AI coding assistant tool is plus.</li>
</ul>
 
At Vecima, everyone contributes and makes an impact. We foster an open, caring, and innovative work environment where creativity and communication thrive. We always strive to be our best and recognize achievements and wins that fuel individual and company growth. Together, we create the breakthroughs that lead the industry forward.
Vecima offers a competitive compensation and benefits package and strives to provide a challenging work environment that can foster skill development and personal career growth for all employees.
We consider applicants for all positions without regard to race, color, religion, creed, gender, national origin, age, disability, marital or veteran status, or any other legally protected status.
Criminal Background Checks will be required upon accepting employment with Vecima Networks Inc. 
At Vecima, everyone contributes and makes an impact. We foster an open, caring, and innovative work environment where creativity and communication thrive. We always strive to be our best and recognize achievements and wins that fuel individual and company growth. Together, we create the breakthroughs that lead the industry forward.
Vecima offers a competitive compensation and <a href="https://vecima.com/company/careers/" target="_blank" rel="noopener">benefits package </a>and strives to provide a challenging work environment that can foster skill development and personal career growth for all employees.
We consider applicants for all positions without regard to race, colour, religion, creed, gender, national origin, age, disability, marital or veteran status, or any other legally protected status.
We are fueled by the innovation, leadership, and passion of today’s top talent. If you are looking for a challenging and rewarding career, we want to hear from you!  Apply now!
Vecima Recruitment Process Vecima takes great care to protect your privacy and personal information throughout the recruitment process.
All legitimate email communications and job offers will come from an @vecima.com email address. If you receive a suspicious message, please contact your Vecima representative directly to verify its legitimacy.
Submit your application • Follow the application instructions carefully • Complete all required fields and upload necessary documents Initial Screening • If shortlisted, you will receive an email or phone call from a Vecima HR Business Partner for:
<ul>
<li>A brief conversation about your background</li>
<li>Basic questions about availability, salary expectations, and interest in the role</li>
</ul>
Interviews • Phone/Video Interviews: First round with HR or the hiring manager • Technical/Skills Assessments: If applicable, complete a test or assignment • In-Person or Final Interviews: Meet with hiring managers or team members; could be a panel Reference & Background Checks • Provide professional references upon request • Be prepared for employment or education verification, and a criminal background check
Job Offer • All job offers will come from Vecima’s UKG Applicant Tracking System • Review the verbal and written offer carefully Onboarding Preparation • Complete paperwork and pre-employment requirements • Get details on your first day, orientation, and whom to contact

Software Senior Engineer

5+ years in broadband access; GPON/XGS-PON experience; proficient in C++/Java; English fluency; strong debugging and teamwork.

About GitHub GitHub is the world’s leading platform for agentic software development — powered by Copilot to build, scale, and deliver secure software. Over 180 million developers, including more than 90% of the Fortune 100 companies, use GitHub to collaborate, and more than 77,000 organisations have adopted GitHub Copilot. Locations In this role you can work from Remote, United States Overview <div>GitHub is seeking a Principal Software Engineer to help shape the future of our core platform infrastructure. In this critical leadership position, you'll drive system architecture for our most critical services, inspire and coach engineering teams, and deliver solutions that keep GitHub running for millions of developers worldwide. </div><div>We're looking for someone with deep expertise in building and operating large-scale distributed systems—someone who thrives on solving hard problems around reliability, availability, and performance at massive scale. You have a proven track record of tackling complex technical challenges with creativity and pragmatism, and you excel in highly collaborative, cross-functional environments. </div><div>Our team focuses on the systems that power GitHub at scale, ensuring our platforms remain stable, secure, and performant under extreme load. As a Principal Software Engineer, you'll work alongside a globally distributed team of talented engineers and managers to enhance and scale our most critical infrastructure, delivering an exceptional experience to our diverse and growing customer base. </div><div>You'll lead by example—both through your own technical contributions and by mentoring others. You'll guide technical strategy, influence architectural decisions, and drive performance optimization across teams. Our culture is built on developer empathy, transparency, and inclusive collaboration. Here, curiosity and a drive for impact are at the heart of everything we do. </div><div>Join us to help shape the future of software development and make a difference for millions of developers around the world. </div> Responsibilities <div><ul style="list-style-type: disc;" role="list"><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Lead and influence system architecture design for complex products and solutions, ensuring they meet security, compliance, and performance requirements.</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Establish and mentor best practices for testing, performance tuning, and code quality, defining success metrics and ensuring maintainability across dependencies.</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Provide technical leadership during code reviews to ensure reliability, scalability, and alignment with product goals.</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Partner with product managers and technical leads to define service requirements and incorporate feedback into future designs.</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Act as an expert in debugging tools and methods, leading proactive and reactive development to resolve issues across teams.</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Optimize deployments and runtime performance to meet business objectives, ensuring safe rollouts aligned with GitHub's standards.</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Drive improvements in development quality and team performance through tooling, automation, and knowledge sharing.</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Lead product refinement through telemetry analysis, performance metrics, and experimentation frameworks to inform engineering decisions.</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Develop strategies to identify and mitigate technical risks, including frameworks for risk assessment and contingency planning.</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="5" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Shape the strategic vision for technology and product development, identifying opportunities for innovation and leading initiatives aligned with GitHub's long-term goals. </li></ul></div> Qualifications <div><div>Required Qualifications: </div><div> </div><div><ul role="list"><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">11+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python,<ul role="list"><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">OR Associate’s Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 10+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python,</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">OR Bachelor's Degree in Computer Science or related field AND 9+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python,</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">OR Master's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 7+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python,</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">OR PhD Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 5+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python,</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">OR equivalent experience. </li></ul></li></ul></div></div><div><div> </div><div>Preferred Qualifications: </div><div><ul style="list-style-type: disc;" role="list"><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="4" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Experience with cloud platforms like Microsoft Azure and Amazon Web Services</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="4" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Understanding of production system monitoring and observability</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="4" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Ability to think critically about both system design and software engineering concepts and blend those perspectives pragmatically based on project needs</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="4" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Demonstrated experience with large-scale system architecture and design, particularly in cloud-based environments, with a strong understanding of distributed systems and microservices</li><li role="listitem" aria-setsize="-1" data-leveltext="" data-font="Symbol" data-listid="4" data-list-defn-props="{"335552541":1,"335559685":720,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1">Experience working closely with product management, design, and other engineering teams to drive cross-functional projects and deliver high-quality product </li></ul></div></div> Compensation Range The base salary range for this job is USD $160,200.00 - USD $425,000.00 /Yr. These pay ranges are intended to cover roles based across the United States. An individual's base pay depends on various factors including geographical location and review of experience, knowledge, skills, abilities of the applicant. At GitHub certain roles are eligible for benefits and additional rewards, including annual bonus and stock. These rewards are allocated based on individual impact in role. In addition, certain roles also have the opportunity to earn sales incentives based on revenue or utilization, depending on the terms of the plan and the employee's role. 
GitHub values

<ul><li>Customer-obsessed</li>

<li>Ship to learn</li>

<li>Growth mindset</li>

<li>Own the outcome</li>

<li>Better together</li>

<li>Diverse and inclusive</li></ul>

Manager fundamentals

<ul><li>Model</li>

<li>Coach</li>

<li>Care</li></ul>

Leadership principles

<ul><li>Create clarity</li>

<li>Generate energy</li>

<li>Deliver success</li></ul>
 Who We Are GitHub is the world’s leading AI-powered developer platform with 150 million developers and counting. We’re also home to the biggest open-source community on earth (and 99% of the world’s software has open-source code in its DNA). Many of the apps and programs you use every day are built on GitHub. 
 
Our teams are dreamers, doers, and pioneers, leading the way in AI, driving humanitarian efforts around the globe, and even sending open source to Mars (and beyond!). 
At GitHub, our goal is to create the space you need to do your best work. We’re remote-first and offer competitive pay, generous learning and growth opportunities, and excellent benefits to support you, wherever you are—because we know that people flourish when they can work on their own terms. 
 
Join us, and let’s change the world, together. EEO Statement GitHub is made up of people from a wide variety of backgrounds and lifestyles. We embrace diversity and invite applications from people of all walks of life. We don't discriminate against employees or applicants based on gender identity or expression, sexual orientation, race, religion, age, national origin, citizenship, disability, pregnancy status, veteran status, or any other differences. Also, if you have a disability, please let us know if there's any way we can make the interview process better for you; we're happy to accommodate!

Principal Software Engineer

11+ years in software engineering or related field; multiple paths to qualification (Associate/Bachelor/Master/PhD with corresponding experience) demonstrated in production software across languages.

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