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Senior Full Stack Java Developer Jobs in Middletown, DE

Java with React

Wilmington, DE · On-site

$55.50 - $70.75/hr

Diverse Lynx LLC is an Equal Employment Opportunity employer, and they are seeking a Senior Full Stack developer with expertise in Java and React. The role requires strong skills in UI development ...

Lead Java Full Stack Developer

Wilmington, DE · On-site

$51 - $65.75/hr

Lead Java Full Stack Developer Location: Wilmington, DE Duration: 2+ years Required Experience "Minimum 10 to 15 Years years Overview The people they are seeking, now, will be part of their ...

Java AWS Developer

Wilmington, DE

$49.50 - $64/hr

... full-stack Java development within team (Agile/Scrum) environments and large implementations ... modern programming languages and database querying languages Overall knowledge of the Software ...

Senior Java Developer

Newark, DE · On-site

$56 - $71.25/hr

Role: Sr. Java Developer Location: Newark, DE Onsite position Fulltime position *****NO C2C***** *****only Fulltime position***** JD: Skill: Sr. Java Developer Must Have Technical/Functional Skills:

Senior Java Developer

Newark, DE · On-site

$56 - $71.25/hr

Role: Sr. Java Developer Location: Newark, DE Onsite position Fulltime position JD Skill: Sr. Java Developer * Experienced in building highly scalable Java and J2EE applications. * Good experience in ...

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Senior Full Stack Java Developer information

See Middletown, DE salary details

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How much do senior full stack java developer jobs pay per hour?

As of May 30, 2026, the average hourly pay for senior full stack java developer in Middletown, DE is $54.74, according to ZipRecruiter salary data. Most workers in this role earn between $47.60 and $61.39 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Senior Full Stack Java Developer, and why are they important?

A Senior Full Stack Java Developer needs advanced proficiency in Java, front-end frameworks (such as Angular or React), and a solid understanding of databases, supported by a bachelor’s degree in computer science or related field. Experience with tools like Spring Boot, RESTful APIs, version control systems (e.g., Git), and cloud platforms is typically required, along with relevant certifications. Strong problem-solving, communication, and teamwork skills help developers effectively collaborate and deliver robust solutions. These competencies are crucial for building scalable applications, leading projects, and ensuring efficient development processes.

What are some common challenges Senior Full Stack Java Developers face when balancing backend and frontend responsibilities?

Senior Full Stack Java Developers often encounter the challenge of staying up-to-date with both backend Java frameworks and rapidly evolving frontend technologies. Balancing deep expertise in server-side development with proficiency in modern JavaScript frameworks (like React or Angular) can be demanding. Additionally, these professionals often need to effectively prioritize tasks between client and server development while collaborating with specialized frontend or backend team members. Time management, clear communication, and a willingness to learn new tools are essential for success in this multifaceted role.

What are Senior Full Stack Java Developers?

Senior Full Stack Java Developers are experienced software professionals who design, develop, and maintain both the front-end and back-end components of web applications using Java and related technologies. They typically work with frameworks such as Spring Boot for the backend and may use JavaScript frameworks like Angular or React for the frontend. In addition to coding, they often lead development teams, make architectural decisions, and ensure best practices are followed throughout the software development lifecycle.
What are the most commonly searched types of Full Stack Java Developer jobs in Middletown, DE? The most popular types of Full Stack Java Developer jobs in Middletown, DE are:
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Senior Full Stack Software Engineer

Senior Full Stack Software Engineer

Waters Corporation

New Castle, DE • Hybrid

Other

Posted 17 days ago


Job description

OverviewWe need your talent!  Waters Corporation is currently seeking a Senior Full Stack Software Engineer to joinourGlobal Software Engineering team.    Our team understands the value of their work in the real world. As a Senior Full Stack Software Engineer in New Castle, Delaware, you'll be working on instruments that are pivotal in:   Electric Cars, 3D Printing, batteries, recyclable plastics, space suits, candy that melts in your mouth and not your hands, paint that goes on smooth and dries without streaks, and even ensuring your French fries have the perfect crunch to them!  Material Science uniquely spans the fields of physics, chemistry, engineering, and manufacturing. Consider this: today's lab instruments can only be viewed in the lab - our mission here is to enable scientists to see their lab results from Starbucks, home, or anywhere you can access the internet.    We are just getting started with building our next-generation best-in-class platform with a goal of being the "best in the industry" to support our customers across life, materials, food, and environmental sciences.    We're looking for a passionate Senior Full Stack Software Engineerwith a talent for building quality software solutions. You will workin a fast-paced, agile environmentand engage in technical discussions, participate in technical designs, demonstrate problem-solving abilities, and present and share ideas through global collaboration.   This role follows a hybrid work model, requiring three days per week on-site at the TA Instruments headquarters located at 159 Lukens Dr, New Castle, DE 19072.  Typical tasks of the position include, but are not limited to

As a Senior Full Stack Software Engineer you will:

  • Research, design, develop and release/maintain: Application, User interface, Data analysis, Instrument control software for thermal analysis, rheological, and calorimetric instruments.
  • Evaluate system specifications and translate system requirements to task specifications.
  • Responsible for ongoing support of current programs including performance, diagnosis and troubleshooting of problem programs and designing solutions to problematic programming.
  • Working within a formal development process covering the full development lifecycle.
  • Work in collaboration with the agile team and appropriate experts to implement your designs.
  • Provide code and supporting documentation in accordance with the coding guidelines, quality processes and applicable procedures, including team's definition of DONE.
  • Work in collaboration with the agile team to generate automated and manual tests to verify implemented software.
  • Provide work estimation and tracking information to support management decisions and planning.
  • Keep a pro-active attitude to insure continuous improvement of the software quality, work process and individual skills.
  • Provide contributions to the application architecture with a focus on scalability, maintainability, security and performance.
  • Provide product specific and technical support to internal and external users where appropriate.

 As a Team Member you will:

  • Participate in all team meetings and ceremonies in direct collaboration with other sites, provide input and feedback, take ownership on identified improvements.
  • Actively participate in learning and sharing activities either during informal or formal training and demos.
  • Demonstrate continuous technical improvement.

This role follows a hybrid work model, requiring three days per week on-site at the TA Instruments headquarters located at 159 Lukens Dr, New Castle, DE 19072.

The successful candidate will have a combination of knowledge, skills, and experience that would include the following

Abilities that will help you be successful: 

  • Bachelor's Degree in Computer Science or similar, or equivalent relevant experience 
  • 5+ years' experience designing, building, and supportingcomplexlarge-scaleapplications/platform(s) and/or solutions.
  • 5+ years of experience designing, building, and scaling solutions using C#, .NET, ASP.NET, RESTful Web API, EF Core, and PostgreSQL.

  • Solid knowledge and proven experience as a software developer, with exposure to elements of our back-end technology stack (C#, .Net, ASP.NET, WEB API).

  • Knowledge of Front-End JavaScript Frameworks, especially React using Typescript.
  • Knowledge and application of software engineering practices (e.g., Unit testing, TDD, CI/CD, SOLID, etc.).
  • Proven ability to work as part of an Agile delivery team
  • Good knowledge of software engineering principles
  • Develop an application from end to end - from the database to the user interface.
  • Excellent written and verbal communication skills are essential.
  • Good knowledge of multi-threading & tasks
  • Database - Design and code databases with a specific language like SQL.

Desired:

  • Continuous delivery, with pipelines implemented in Kubernetes, Docker
  • Experience using GitHub and GitHub Actions
  • Behaviour Driven Development (BDD), with SpecFlow
  • Software security best practices and implementation (e.g. OWASP, PKI, X509 Certificates, TLS)
  • Software development for regulated environments (e.g. 21 CFR11)
  • Analytical Instrumentation Domain.
  • Building from the ground up in small teams
  • Knowledge and experience with multiple technologies such as application servers, n-tier applications, database management systems and open-source trends 
  • Strong understanding ofcomputer science algorithms, data structures, anddesign patterns.

You care about software; you have a passion for what you do which you can clearly convey by your actions and experiences. You have an eye for software design and can talk eloquently on a range of topics due to your experiences and from reading and experimentation.

Company Description

Waters Corporation (NYSE:WAT) is a global leader in life sciences and diagnostics, dedicated to accelerating the benefits of pioneering science through analytical technologies, informatics, and service. With a focus on regulated, high-volume testing environments, our innovative portfolio harnesses deep scientific expertise across chemistry, physics, and biology. We collaborate with customers around the world to advance the release of effective, high-quality medicines, ensure the safety of food and water, and drive better patient outcomes by detecting diseases earlier, managing routine infections, and combating antibiotic resistance. Through a shared culture of relentless innovation, our passionate team of ~16,000 colleagues turn scientific challenges into breakthroughs that improve lives worldwide. 

Diversity and inclusion are fundamental to our core values at Waters Corporation. It benefits our employees, our products, our customers and our community. Waters complies with all applicable federal, state, and local laws. Qualified applicants are considered without regard to sex, race, color, ancestry, national origin, citizenship status, religion, age, marital status (including civil unions), military service, veteran status, pregnancy (including childbirth and related medical conditions), genetic information, sexual orientation, gender identity, legally recognized disability, domestic violence victim status, or any other characteristic protected by law. Waters is proud to be an equal opportunity workplace and is an affirmative action employer. All hiring decisions are based solely on qualifications, merit, and business needs at the time.

Employment Type: OTHER