core java software engineer

Clustox

<div><p>Clustox is seeking a highly skilled and hands-on Principal Software Engineer with deep expertise in Java to join our growing team. As a Principal Software Engineer, you will be responsible for designing, developing, and maintaining software solutions that meet the needs of our clients while remaining actively involved in coding and technical implementation.</p><p>
This is a hands-on engineering role focused on writing high-quality code, driving technical excellence, and collaborating closely with teams to deliver scalable systems.</p><p>
Responsibilities</p><ul><li>
Design, develop, and maintain secure, scalable applications using Core Java.</li></ul><p></p><ul><li>
Implement robust RESTful APIs, SOAP APIs, and microservices for seamless integration with other services.</li><li>
Stay actively involved in coding and system implementation, leading by example in best practices and code quality.</li><li>
Work with JSON and XML for data interchange between services and handle data serialization/deserialization effectively.</li><li>
Apply design patterns and architectural best practices to build efficient, maintainable code.</li><li>
Conduct system and component design reviews to ensure compliance with standards and scalability goals.</li><li>
Implement and manage encryption/decryption mechanisms to ensure data security and compliance.</li><li>
Ensure secure communication protocols and data storage using encryption standards like AES, RSA, and TLS.</li><li>
Oversee production deployments, ensuring zero downtime and robust rollback mechanisms.</li><li>
Monitor applications post-deployment, handle troubleshooting, and improve system stability.</li><li>
Establish and manage CI/CD pipelines using tools such as Jenkins, GitLab CI, or GitHub Actions.</li><li>
Develop database schemas, write optimized queries, and manage integrations with relational databases like MySQL, PostgreSQL, or Oracle.</li><li>
Experience with NoSQL databases such as MongoDB, Cassandra, or Redis is a plus.</li><li>
Mentor and guide engineers through code reviews and technical discussions while continuing to contribute as a core developer.</li></ul><p>
Requirements</p><ul><li><p>
Bachelors degree in Computer Science or a related discipline.</p></li><p></p><li>
5+ years of hands-on experience in Java development.</li><li>
Strong command over Core Java, including Streams, Generics, Collections, and Concurrency.</li><li>
Deep understanding of Design Patterns (e.g., Singleton, Factory, Builder, Observer) and their practical applications.</li><li><p>
Proven experience developing and managing microservices-based architectures.</p></li><li><p>
Hands-on experience with both RESTful and SOAP APIs.</p></li><li><p>
Proficiency in JSON/XML for data interchange and processing.</p></li><li><p>
Practical experience with CI/CD pipelines (Jenkins, GitLab CI, GitHub Actions).</p></li><p></p><li>
Strong database management experience with MySQL/PostgreSQL; familiarity with NoSQL databases is a plus.</li><li><p>
Experience working with Git, JIRA, Confluence, or similar collaboration tools.</p></li><p></p><li>
Proficient with testing frameworks (JUnit, Mockito, etc.) for unit and integration testing.</li><li><p>
Exposure to cloud services (AWS, Azure, or GCP).</p></li><li><p>
Strong analytical, debugging, and problem-solving skills.</p></li><p></p><li>
A hands-on mindset you will be actively writing production-grade code and driving implementation excellence.</li></ul></div>

Principal Software Engineer-Java

TPConnects

<div>
<div>
<div><strong style="font-size: 13px;">About the Role</strong></div></div>
<div>
<div>We are currently seeking a Software Java Engineer for our SaaS Cloud-based backend. The role will focus on developing new functionalities and looking at scalability, performance, and system throughput. The successful candidate will be joining our international team, mainly based in Dubai. </div>
</div>
<div>
<div> </div>
</div>
<div>
<div> <strong>Role Title </strong> </div>
</div>
<div>
<div>Software Java Engineer </div>
</div>
<div>
<div> </div>
</div>
<div>
<div> <strong>Role Location </strong> </div>
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<div>
<div>Warsaw, Poland </div>
</div>
<div>
<div> </div>
</div>
<div>
<div> <strong>Key responsibilities </strong> </div>
</div>
<div>
<ul>
<li>Attend regular meetings with the development team to discuss ideas and challenges.</li>
<li>Adopt an open, collaborative approach, be receptive to feedback, and offer suggestions.</li>
<li>Use your analytical skills to troubleshoot issues and make recommendations.</li>
<li>Collaborate with the internal team to ensure successful project delivery.</li>
<li>Troubleshoot front-end software issues and debug application code.</li>
<li>Document application changes and develop updates.</li>
<li>Collaborate with other engineers to implement operational solutions while adhering to industry best practices. </li>
</ul>
</div>
</div>
<div>
<div>
<div> <strong>Skills and competencies </strong> </div>
</div>
<div>
<ul>
<li>
<div>Excellent verbal and written communication skills.</div>
</li>
<li>
<div>Exceptional interpersonal skills with both internal/external stakeholders and within the team.</div>
</li>
<li>
<div>Experience in Java (3+ years), SpringBoot, JPA (JPA2, Hibernate), JUnit, JSON, API development and integration.</div>
</li>
<li>
<div>Familiarity with Agile methodology.</div>
</li>
<li>
<div>Experience with microservices and cloud technologies.</div>
</li>
<li>
<div>Good knowledge of Relational Databases (MySQL). </div>
</li>
<li>
<div>Ability to work dynamically and reuse Components and Services.</div>
</li>
<li>
<div>Fluent in English (both written and spoken). </div>
</li>
</ul>
</div>
<div>
<div> </div>
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<div> <strong>What would be good to have </strong> </div>
</div>
<div>
<ul>
<li>
<div>AWS developer certification.</div>
</li>
<li>
<div>Knowledge of clean code strategy.</div>
</li>
<li>Knowledge of NoSQL (DynamoDB) datastores.</li>
<li>
<div>Strong troubleshooting mindset, with proven experience solving critical software issues. <br></div>
</li>
</ul>
</div>
</div>

Software Java Engineer

Yess InfoTech

<ul><li>Develop lesson plans and manage students</li><li>Teach students according to the educational needs</li><li><b>It is a Part / Full Time Teacher / Tutor job for candidates with 1 - 2 years of experience.</b></li><li>Develop and update curriculum and training materials.</li><li>Provide hands-on coding exercises and projects to reinforce learning.</li><li>Assess student performance through quizzes, assignments, and projects.</li><li>Deliver engaging and interactive training sessions on Java full stack development</li><li>Stay updated with the latest trends and technologies in Java full stack development.</li><li>Collaborate with other trainers and staff to ensure a cohesive learning experience. Web</li><li>Development</li><li>Skills: Java, , Spring Framework, HTML, CSS, JavaScript, Angular or React,</li></ul><p><b>SQL, No SQL databases, RESTful APIs, Microservices, Git, Agile methodologies,Spring boot, Hibernate, Core java, Advanced java, Java JDBC, ServletImmediate joiners preferred.</b></p><p>Job Type: Full-time</p><p>Pay: &#8377;13,000.00 - &#8377;20,000.00 per month</p><p>Benefits:</p><ul><li>Paid sick time</li><li>Paid time off</li></ul><p>Work Location: In person</p>

Java Full Stack Trainer

Oracle

<div><p>As a member of the software engineering division, you will take an active role in the definition and evolution of standard practices and procedures. You will be responsible for defining and developing software for tasks associated with the developing, designing and debugging of software applications or operating systems.
<br>
<br>
Work is non-routine and very complex, involving the application of advanced technical/business skills in area of specialization. Leading contributor individually and as a team member, providing direction and mentoring to others. BS or MS degree or equivalent experience relevant to functional area. 7 years of software engineering or related experience.</p></div>
<br><div><p>As a part of OCI Core Services, the Virtual Networking org at India Design Center is building new Infrastructure-as-a-Service technologies that operate and enable a high scale broadly distributed multi-tenant cloud. All the other services and applications on cloud consume these core services. OCI Networking Development, India is a newly established team who will develop these state of art, distributed and highly available virtual networking services.
</p><p>Oracle Cloud Infrastructure Load Balancing offers options to distribute workload processes across multiple resources in multi-tier and highly distributed application architectures to ensure availability.
</p><p>As a developer, you will contribute to the development and automation of these services in a global agile team. You should be comfortable at building complex distributed systems that interact with end users at one end and network infrastructure at the other. Experience on Service Data Plane is preferred.
</p><p>Developing algorithms to efficiently solve problems for moving data across a distributed network efficiently and reliably is the key skill that that you will enable your success in our team. Your ability to identify and mitigate risks in your projects and across your functional team is an important measure of your success in this role. You will be responsible for the reliability and high availability of our service in the production environment which is an integral part of the development process at OCI. On-call support is also a part of this role.
</p><p>You should be passionate and highly skilled in programming in Java/C/C++/Python or a language of your choice and able to write clean code consistently. You should also be ready to learn a new language when a there&rsquo;s a need. Writing structured and optimized code for improving performance and scalability when it is deployed in a cloud environment as a part of a service operating in a distributed environment is one of the most critical requirements.
</p><p>The OCI Core teams have a highly collaborative work culture. Your ability to take initiative in an ever changing environment to own results without ego and deliver value to the customers will determine your success in our organization.
</p><p><b>Responsibilities </b>:
</p><ul><li>Contribute to major new features and own small features/fixes in existing systems working with project lead on most projects
</li></ul><ul><li>Writing correct, secure, maintainable and robust code with appropriate tests.
</li></ul><ul><li>Contribute to improvement of engineering practices, ops practices, development process and technical documentation
</li></ul><ul><li>May occasionally need to collaborate across teams
</li></ul><ul><li>Collaborating on planning, architecture and major pain points in your service and identifying and mitigating risks in your project.
</li></ul><p><b>Qualifications
</b></p><ul><li>Bachelor&rsquo;s degree in Computer Science or related field
</li></ul><ul><li>8+ years of experience in applications development
</li></ul><ul><li>2+ years of experience in developing large scale distributed services / applications
</li></ul><ul><li>Hands-on skills with object oriented programming langues like Java/C++/Python
</li></ul><ul><li>Understanding of design patterns and good low level design principles/practices
</li></ul><ul><li>Good verbal and written communication skills</li></ul></div>

Java Backend Developer - Networking Services

ESTIDAMA UAE

<div>
 <p>
  We are looking for a Java
  <strong>
   Developer
  </strong>
  to join our team and contribute to the design and development of high-performance
  <strong>
   payment systems
  </strong>
  . If you thrive in fast-paced environments, enjoy solving complex problems, and are passionate about scalable technology.
 </p>
 <p>
  <strong>
   Responsibilities:
  </strong>
 </p>
 <ul>
  <li>
   Collaborate on the architecture and implementation of a robust, scalable payment system.
  </li>
  <li>
   Solve challenges in high-concurrency, microservices-based environments with complex business logic.
  </li>
  <li>
   Participate in code reviews and help define and enforce development standards and best practices.
  </li>
  <li>
   Maintain, upgrade, and troubleshoot existing software systems to ensure performance and reliability.
  </li>
 </ul>
 <p>
 </p>
 <p>
  <strong>
   Requirements:
  </strong>
 </p>
 <ul>
  <li>
   Bachelor&rsquo;s degree or above in Computer Science or a related field.
  </li>
  <li>
   5+ years of Java development experience in the internet industry.
  </li>
  <li>
   Prior experience in the
   <strong>
    financial industry
   </strong>
   , especially
   <strong>
    third-party payment systems
   </strong>
   , is a strong plus.
  </li>
  <li>
   Strong fundamentals in Java, multithreaded programming, JVM internals, and design patterns.
  </li>
  <li>
   Proficiency with open-source frameworks and tools including SpringMVC, MyBatis, Dubbo, Redis, RabbitMQ, Maven, GitLab, etc.
  </li>
  <li>
   Hands-on experience with application servers (Tomcat, Nginx) and strong skills in Linux command-line tools (shell, awk, sed, etc.).
  </li>
  <li>
   Solid understanding of relational databases such as MySQL or Oracle.
  </li>
  <li>
   Front-end experience with HTML5, CSS3, JavaScript (ES6+), and modern frameworks like React, Vue, or Angular.
  </li>
  <li>
   Ability to independently complete complex system analysis and architecture design.
  </li>
  <li>
   Strong problem-solving skills, attention to detail, and a proactive mindset.
  </li>
  <li>
   Familiarity with software engineering best practices and quality assurance methodologies.
  </li>
 </ul>
 <p>
 </p>
 <p>
  <strong>
   Preferred Qualifications:
  </strong>
 </p>
 <ul>
  <li>
   Professional
   <strong>
    Chinese language skills
   </strong>
   (reading and writing) for effective communication with cross-regional teams.
  </li>
 </ul>
 <p>
 </p>
</div>


Java Software Engineer

Raytheon

<div><p><b>Date Posted:</b></p>
2025-10-24<p><b>
Country:</b></p>
United States of America<p><b>
Location:</b></p>
TX234: Richardson 1717 CityLine 1717 East CityLine Drive Building C17, Richardson, TX, 75082 USA<p><b>
Position Role Type:</b></p>
Onsite<p><b>
U.S. Citizen, U.S. Person, or Immigration Status Requirements:</b><b>
</b></p>The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance<p><b>
Security Clearance:
</b></p>TS/SCI without Polygraph<p></p><p>
At Raytheon, the foundation of everything we do is rooted in our values and a higher calling &ndash; to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today&rsquo;s mission and stay ahead of tomorrow&rsquo;s threat. Our team solves tough, meaningful problems that create a safer, more secure world.</p><p></p><p><b>
Job Summary:</b></p><p>
In the Java Software Engineering CO-OP role, you will design, develop, and test Java code in a Linux, Agile, DevOps environment. We are at the forefront of aerospace and defense technology. Our Satellite Ground Systems Teams play a pivotal role in ensuring communication, surveillance, and defense capabilities through cutting-edge satellite systems. We invite you to be part of a team that pushes the boundaries of what's possible. Due to the security clearance requirement, this is an onsite position in our Richardson, TX office at Cityline. Initially, this position could be a limited part-time role during the clearance process. Once a U.S. government issued TS/SCI security clearance is approved, full time work can commence. Unclassified work may be available prior to that approval; however, it is NOT guaranteed.</p><p></p><p><b>
What you will do:</b></p><p>
The Java Software Engineer CO-OP will design, develop, and maintain advanced software applications for our Satellite Ground Systems. This role involves close collaboration with systems engineers and other software engineers to deliver reliable and high-performance software solutions. Other responsibilities to anticipate may include:</p><p>
Design, implement, and test Java-based applications and software components for satellite ground systems.</p><p>
Collaborate with cross-functional teams to define software requirements and specifications.</p><p>
Work with previously written code and make modifications as necessary.</p><p>
Ensure software performance, reliability, and scalability.</p><p>
Participate in software design reviews, code reviews, and system integration activities.</p><p>
Contribute to the completion of program and project milestones under the specific guidance of their immediate supervisor.</p><p>
Follow established Software processes and procedures, development, documentation and maintenance/management of operations concepts, requirements (system, element, segment level), external and internal interfaces, and other software engineering work products/artifacts.</p><p>
Stay updated with the latest advancements in Java and satellite technology to drive innovation.</p><p></p><p><b>
Qualifications you must have:</b></p><ul><li><p>
This position is for an intern who is enrolled in a Bachelor&rsquo;s (or higher) degree program in Computer Science, Computer Engineering, Software Engineering or related field (STEM) and will be at minimum Sophomore, Junior, Senior or Post Grad year by summer 2026.</p></li><li>
Experience in object-oriented software design and development using a high order language such as Java in a Linux environment.</li><li>
Experience in scripting languages.</li><li><p>
The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.</p></li></ul><p><b><br>
Qualifications we prefer:</b></p><ul><li>
Experience with Jenkins, containers, and the Spring Framework</li><li>
Experience with Agile development methodologies.</li><li>
Understanding of containerization technologies such as Docker and Kubernetes.</li><li>
Knowledge of DevSecOps and Continuous Integration/Continuous Delivery.</li><li>
Security+ Certification.</li></ul><p></p><p><b>
What We Offer:</b></p><p>
Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.</p><p></p><p><b>
Learn More &amp; Apply Now!</b></p><ul><li><p><i>
Please consider the following role type definition as you apply for this role: </i><i>Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.</i></p></li></ul><p></p><p>
Additional Details:</p><p><i>
Please upload a copy of your most recent transcripts with your resume when applying to this requisition. Include your cumulative GPA and projected graduation date on your resume.</i></p><p></p><p>
Clearance Information:</p><p><i>
This position requires the eligibility to obtain a security clearance. The Defense Industrial Security Clearance Office (DISCO), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: </i><i>https://www.state.gov/m/ds/clearances/c10978.htm</i></p><p></p><p><b><i>
As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.</i></b></p><p></p>
The salary range for this role is 37,000 USD - 82,000 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate&rsquo;s work experience, location, education/training, and key skills.<p></p>
Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.<p></p>
Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company&rsquo;s performance.<p></p>
This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.<p></p>
RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.<p></p><p><i>
RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans&rsquo; Readjustment Assistance Act.</i>
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2026 Co-Op - Java Software Engineer Co-Op - Onsite (TX)

BayOne Solutions

6+ years of experience--Develops secure and high-quality production code, and reviews and debugs codes.
<br><br>
Actively contributes to the engineering community as an advocate of firmwide frameworks, tools, and practices of the Software Development Life Cycle
<br><br>
Influences peers and project decision-makers to consider the use and application of leading-edge technologies.
<br><br>
<b>Technologies experience:</b> Java 8 or 11, AWS or Azure, Microservices, MongoDB, REST APIS, microservices
<br><br>
80% backend and 20% frontend—Front end is React, Javascript
<br><br>
Kafka is good to have

Java Full Stack Engineer (Offshore)

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