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Senior Java Software Developer Jobs in Wilmington, DE

Avance Consulting Services

Sr.Java Developer

Chesterbrook, PA · On-site

$55.25 - $70.50/hr

Position: Sr. Java Developer Duration: 6 months Location: Chesterbrook, PA (Citizen's & GC's only ... You will have an opportunity to develop software that interacts with hardware such as sensors, IP ...

Syntricate Technologies

Senior Java Developer

Newark, DE · On-site

$56.25 - $71.50/hr

Role: Senior Java Developer Job Location: Charlotte, NC / Plano, TX / Atlanta, GA / Newark, DE ... Software development in Agile environment. Java(JDK 1.8), Spring Framework and Spring Boot, RESTful ...

IMS

Senior Java Developer

Philadelphia, PA

$57.75 - $73.75/hr

POSITION PROFILE The Senior Java Developer will provide the programming group consistent leadership ... in Software Development Excellent communication skills Great customer and team focus Strong ...

IMS LLC

Senior Java Developer

Philadelphia, PA · On-site

$57.75 - $73.75/hr

POSITION PROFILE The Senior Java Developer will provide the programming group consistent leadership ... Software Development • Excellent communication skills • Great customer and team focus • ...

Ims

Senior Java Developer

Philadelphia, PA · On-site

$57.75 - $73.75/hr

POSITION PROFILE The Senior Java Developer will provide the programming group consistent leadership ... Software Development • Excellent communication skills • Great customer and team focus • ...

360 IT Professionals

Sr Java Developer

Wilmington, DE · On-site

$55.50 - $70.75/hr

Role:- Sr Java Developer Location:- Wilmington, DE. Duration:- 1 Year (Possible Extension) Sr Java ... Deploying and maintaining software applications in the Linux environment. Experience with Apache ...

Sarian, Inc.

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 ...

Sarian, Inc.

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:

SARIAN Co

Senior Java Developer

Newark, DE · On-site

$56.25 - $71.50/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 ...

USCS

Senior Java Developer

Conshohocken, PA · On-site

$145K - $165K/yr

Senior Java Developer Build the systems that operate critical logistics infrastructure. Who We Are ... US Cold Storage's software development team of over 100 engineers builds the logistics and ...

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How much do senior java software developer jobs pay per hour?

As of May 27, 2026, the average hourly pay for senior java software developer in Wilmington, DE is $60.95, according to ZipRecruiter salary data. Most workers in this role earn between $53.41 and $68.08 per hour, depending on experience, location, and employer.

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

To thrive as a Senior Java Software Developer, you need advanced proficiency in Java programming, strong knowledge of software design patterns, and experience with frameworks like Spring, typically backed by a bachelor's degree in computer science or a related field. Familiarity with tools such as Git, Maven, Jenkins, and cloud platforms, along with relevant certifications like Oracle Certified Professional Java SE, is often required. Strong problem-solving abilities, effective communication, and leadership skills help in mentoring teams and collaborating on complex projects. These skills ensure the delivery of robust, scalable software solutions and foster innovation within development teams.

What are some common challenges Senior Java Software Developers face when leading projects, and how can they effectively address them?

Senior Java Software Developers often encounter challenges such as balancing hands-on coding with mentoring junior team members, managing project timelines, and ensuring code quality across large, distributed systems. To address these, it’s crucial to establish clear communication channels, implement robust code review processes, and leverage agile methodologies for project management. Additionally, staying up-to-date with the latest Java frameworks and best practices helps in making informed architectural decisions and streamlining development workflows.

What is a Senior Java Software Developer?

A Senior Java Software Developer is an experienced professional responsible for designing, developing, and maintaining complex software applications using the Java programming language. They typically lead development teams, mentor junior developers, and contribute to architectural decisions. Senior Java Developers are expected to have a deep understanding of Java frameworks, best coding practices, and software development methodologies. They also collaborate with stakeholders to deliver robust, scalable, and efficient software solutions.

What is the difference between Senior Java Software Developer vs Java Software Engineer?

AspectSenior Java Software DeveloperJava Software Engineer
Required CredentialsBachelor's degree in Computer Science or related field; extensive Java experience; certifications like Oracle Java CertificationBachelor's degree in Computer Science or related field; Java programming skills; certifications are common but not mandatory
Work EnvironmentDevelops complex applications, mentors junior staff, leads projectsDesigns and develops Java applications, collaborates with teams, implements features
Employer & Industry UsageUsed across tech companies, finance, healthcare, and enterprise sectorsCommon in software development firms, IT departments, and tech startups

The main difference between a Senior Java Software Developer and a Java Software Engineer lies in experience level and responsibilities. Senior developers often lead projects and mentor others, while Java Software Engineers focus on designing and implementing Java applications. Both roles require strong Java skills and similar educational backgrounds, but seniority involves additional leadership and project management duties.

Senior Java Software Developer jobs near you
Sr Java Back-End Software Engineer

Sr Java Back-End Software Engineer

Fiserv, Inc.

King Of Prussia, PA • On-site

$124.40K - $163.80K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Posted 4 days ago

Fiserv rating

7.6

Company rating: 7.6 out of 10

Based on 85 frontline employees who took The Breakroom Quiz

105th of 137 rated financial services

Job description

Calling all innovators - find your future at Fiserv.
We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants, and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv.
Job Title
Sr Java Back-End Software Engineer
About your role:
We're looking for a Senior Java Software Developer passionate about working as a member of a software product development team to deliver modern, complex web applications. You will design, build, monitor, and maintain backend services that power a complex, distributed, web-based software product. As a Senior Software Developer, you'll provide technical direction and work with the team to iteratively deliver production-grade microservices. You will help shape the technical direction and collaborate with team members to evolve our microservice architecture in a scalable Docker/Kubernetes environment that maintains a strong focus on reliability, security, and performance.
What you'll do:
  • Design, develop, test, deploy, and maintain backend services and APIs for a microservice architecture.
  • Demonstrate the ability to implement modern architectural designs in software development.
  • Mentor the team in building resilient, observable, and secure services (e.g., health checks, structured logging, metrics, tracing, and alerting).
  • Implement data and integration patterns such as asynchronous messaging, event-driven workflows, and independent service-to-service communication.
  • Develop automated unit and integration tests to confirm the expected behavior of software during the build process.
  • Develop containerized workloads and deployment artifacts; contribute to Kubernetes deployments, configuration, and runtime troubleshooting.
  • Collaborate with Product, Design, other Engineering teams, and product stakeholders to translate requirements into technical solutions and deliver iteratively.
  • Improve developer velocity by contributing to CI/CD pipelines, automation, and engineering standards (testing, code review, documentation).
  • Mentor engineers and raise the quality bar through design reviews, technical guidance, and shared ownership of architecture decisions.
  • Actively participate in Scrum Agile events and provide your opinion and guidance as a technical professional during team discussions.
  • Responsibilities listed are not intended to be all-inclusive and may be modified as necessary.

Experience you'll need to have:
  • Bachelor's degree in computer science, engineering or related field.
  • 7+ years of professional experience developing software and delivering production systems with a member of a product development team.
  • Proficient in building Java (Spring Boot) RESTful APIs and/or gRPC services.
  • Working knowledge with software design patterns and architectural principals, including application scaling, distributed data systems and asynchronous communications.
  • Experience designing and developing microservices, including service decomposition, API design, and backwards-compatible change management.
  • Experience with containerization and orchestration (Docker and Kubernetes).
  • Experience with secure coding practices and secrets management.
  • Experience with Agile, CI/CD systems and modern SDLC practices (code reviews, automated testing, and incremental delivery).
  • Strong troubleshooting and root-cause analysis skills across distributed systems, networking, and Linux-based environments.
  • Strong communication skills, including writing technical documentation, participating in Agile events, and collaborating effectively with team members.

Experience that would be great to have:
  • Experience with distributed systems, microservices architectures (Docker/Kubernetes), and working in a Linux-based environment.
  • Experience with data stores commonly used in distributed systems (e.g., PostgreSQL/MySQL, Redis, Kafka) and associated consistency and scaling trade-offs.
  • Experience with observability stacks (e.g., OpenTelemetry, Prometheus/Grafana, ELK/EFK) and building actionable operational dashboards.
  • Experience with Kubernetes ecosystems and tools (e.g., Helm, ArgoCD, Kustomize) and automated CI/CD build pipelines (GitLab).
  • Experience hardening systems for security and compliance (threat modeling, secrets management, secure coding practices).
  • Experience improving performance and reliability through load testing, capacity planning, and resiliency patterns (timeouts, retries, circuit breakers).

How you'll work:
  • This role is on-site Monday through Friday. Fiserv considers in-person collaboration to be an essential part of this role as in-person office experiences help you with your overall onboarding experience and leads to stronger productivity.
  • This role requires use of a computer and audio equipment.

Benefits at Fiserv:
  • Fuel Your Life program to support your physical, financial, social, and emotional well-being
  • Paid holidays and generous time away policies
  • No-cost mental health support through Employee Assistance Programs
  • Living Proof program to recognize your peers' extra effort with points redeemable for rewards
  • Eight Employee Resource Groups to foster a collaborative culture and expand your network
  • Unparalleled professional growth with training, development, and internal mobility opportunities
  • Medical, dental, vision, life, and disability insurance options available from day one
  • Retirement planning and discounted shares with the Employee Stock Purchase Plan
  • Tuition assistance and reimbursement program
  • Paid parental, caregiver, and military leave

This role is not eligible to be performed in Colorado, California, District of Columbia, Hawaii, Illinois, Massachusetts, Maryland, Minnesota, New Jersey, New York, Nevada, Rhode Island or Washington.
It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.
Please note that salary ranges provided for this role on external job boards are salary estimates made by outside parties and may not be accurate.
Thank you for considering employment with Fiserv. Please:
  • Apply using your legal name
  • Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Equal Opportunity:
Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.
If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact AskHR.US@fiserv.com. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv's Disability Accommodation Policy for additional information.
Note to agencies:
Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.
Warning about fake job posts:
Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

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