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Temporary Java Developer Startup Jobs in New Jersey

Fiserv, Inc.

Senior Java Developer

Berkeley Heights, NJ · On-site

$110K - $186K/yr

Job Title Senior Java Developer About your role: Design, develop, and maintain Java-based ... Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or ...

Monitise

Senior Java Developer

Berkeley Heights, NJ · On-site

$110K - $186K/yr

Job Title Senior Java Developer About your role: Design, develop, and maintain Java-based ... Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or ...

Fiserv, Inc.

Senior Java Developer

Berkeley Heights, NJ · On-site

$97K - $164K/yr

Job Title Senior Java Developer About your role: Design, develop, and maintain backend Java ... Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or ...

Monitise

Senior Java Developer

Berkeley Heights, NJ · On-site

$97K - $164K/yr

Job Title Senior Java Developer About your role: Design, develop, and maintain backend Java ... Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or ...

Dellfor Technologies

senior java developer

Jersey City, NJ

$59.75 - $76.25/hr

And we do it every single day - for both temporary and permanent assignments and across virtually ... Competence in using Java IDE tools of Eclipse, GGTS, Rational Application Developer (RAD ...

Karwell Tech

Full Stack Java Developer

Paramus, NJ · On-site

$53.25 - $68.50/hr

So, whether your company is a small startup struggling to make it in the industry or an established ... Java APIs - Experience working in an Agile Environment - Experience in Oracle from a Java ...

Karwell Tech

Full Stack Java Developer

Paramus, NJ

$53.25 - $68.50/hr

So, whether your company is a small startup struggling to make it in the industry or an established ... Java APIs - Experience working in an Agile Environment - Experience in Oracle from a Java ...

SoftNice INC

Java or .Net

Jersey City, NJ · On-site

$53.25 - $69/hr

Temporary staffing is an area which helps employers to make an efficient large scale strategic ... JAVA Introduction to Servelets Writing Java server pages Java Naming and Directory interface (JNDI ...

E*Pro, Inc.

... Temp-to-Hire. In addition, our industry expertise and knowledge within financial services ... We are looking for Java UI Developer@ Whippany, NJ on Permanent employment. If interested, please ...

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Temporary Java Developer Startup information

What are some common challenges faced by temporary Java developers working at startups?

Temporary Java Developers at startups often encounter fast-paced environments where priorities can shift quickly and project scopes may evolve. Adapting to new codebases with minimal onboarding, collaborating with small teams, and delivering results under tight deadlines are typical challenges. However, this setting also provides valuable exposure to diverse technologies and business processes, allowing for rapid skill development and meaningful contributions. Successful candidates are usually proactive, flexible, and comfortable working with limited supervision.

What is the difference between Temporary Java Developer Startup vs Temporary Java Developer Corporate?

AspectTemporary Java Developer StartupTemporary Java Developer Corporate
CredentialsJava certification, basic programming skillsJava certification, advanced programming skills
Work EnvironmentFast-paced, small teams, dynamic projectsStructured, larger teams, formal processes
Employer & Industry UsageStartups, tech companies, innovative projectsLarge corporations, finance, enterprise solutions
Search & Comparison IntentHigh overlap in skills, project scope, and work styleSimilar skill set but different organizational context

The main difference between a Temporary Java Developer Startup and a Temporary Java Developer Corporate lies in the work environment and project scope. Startups typically offer a fast-paced, flexible setting with smaller teams, while corporate roles involve structured processes within larger organizations. Both roles require Java certification and programming skills, but the context and work dynamics vary significantly.

What are the key skills and qualifications needed to thrive as a temporary Java developer at a startup, and why are they important?

To thrive as a Temporary Java Developer at a startup, you need strong proficiency in Java programming, experience with frameworks like Spring or Hibernate, and a relevant degree or equivalent experience. Familiarity with version control systems such as Git, cloud platforms like AWS, and agile development tools is commonly required. Adaptability, effective communication, and problem-solving skills are critical soft skills, especially in fast-paced startup environments. These competencies are vital to quickly deliver scalable solutions and collaborate efficiently in a dynamic team setting.

What is a temporary Java developer at a startup?

A Temporary Java Developer at a startup is a software professional hired on a short-term or contract basis to develop, maintain, or improve Java-based applications. This role typically involves working with a small, dynamic team to quickly build or scale products, fix bugs, and implement new features using the Java programming language. Temporary positions are often project-based, allowing startups to address immediate technical needs without committing to long-term employment. Developers in this role must be adaptable, collaborative, and able to work in fast-paced environments.
What are the most commonly searched types of Java Developer Startup jobs in New Jersey? The most popular types of Java Developer Startup jobs in New Jersey are:
What are popular job titles related to Temporary Java Developer Startup jobs in New Jersey? For Temporary Java Developer Startup jobs in New Jersey, the most frequently searched job titles are:
What job categories do people searching Temporary Java Developer Startup jobs in New Jersey look for? The top searched job categories for Temporary Java Developer Startup jobs in New Jersey are:
What cities in New Jersey are hiring for Temporary Java Developer Startup jobs? Cities in New Jersey with the most Temporary Java Developer Startup job openings:
Temporary Java Developer Startup jobs near you

Senior Java Developer

Fiserv, Inc.

Berkeley Heights, NJ • On-site

$110K - $186K/yr

Full-time

Re-posted 5 days ago

Fiserv rating

7.7

Company rating: 7.7 out of 10

Based on 95 frontline employees who took The Breakroom Quiz

105th of 150 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
Senior Java Developer
About your role:
Design, develop, and maintain Java-based middleware services that support issuer applications and core business processes. Partner with engineering peers, product stakeholders, and support teams to deliver secure, resilient, and compliant solutions that meet business and regulatory needs. This role matters by helping modernize critical service-layer applications while maintaining code quality, system performance, and production stability.
What you'll do:
  • Design, develop, test, and maintain Java-based enterprise applications and middleware services that support issuer platforms and related business functions.
  • Build and enhance business service layer capabilities that store, process, and return business logic to downstream user interfaces and connected applications.
  • Develop RESTful services and application components using Java frameworks such as Spring, Enterprise JavaBeans (EJB), or similar enterprise technologies.
  • Produce secure, resilient, and maintainable code for mission-critical applications with attention to performance, fault tolerance, and compliance requirements.
  • Support production stability by troubleshooting incidents, identifying root causes, implementing fixes, and restoring service with urgency.
  • Perform code reviews, share technical guidance, and support engineering standards that improve code quality and delivery consistency across the team.
  • Collaborate with cross-functional teams in Agile delivery processes to refine requirements, estimate work, and deliver tested solutions within sprint timelines.
  • Contribute to application build-out, modernization, deployment, and maintenance activities across development and support lifecycles.
  • Responsibilities listed are not intended to be all-inclusive and may be modified as necessary.

Experience you'll need to have:
  • 6+ years of experience designing, developing, and maintaining Java-based enterprise applications in production environments.
  • 6+ years of experience building enterprise solutions using Spring, Enterprise JavaBeans (EJB), or similar Java application frameworks.
  • 6+ years of experience developing RESTful services and integrating service-layer components across distributed systems.
  • 6+ years of experience supporting mission-critical applications with a focus on resiliency, performance, security, and production issue resolution.
  • Experience using Git, Maven, Jenkins, Jira, or similar source control, build automation, continuous integration, and Agile delivery tools.
  • Experience with security implementation using JSON Web Tokens (JWT), OAuth, or similar authentication and authorization approaches.
  • Experience with Oracle, Cassandra, or similar relational database management system (RDBMS) or NoSQL platforms, including data modeling and Java persistence application programming interfaces (APIs) such as Hibernate, Spring Data, or EclipseLink.
  • Bachelor's degree in computer science, software engineering, or a related field, or equivalent combination of education, related experience and/or military experience.

Experience that would be great to have:
  • Experience with IBM Liberty, Spring Boot, Docker, or similar containerized application platforms.
  • Experience with test-driven development and test-first engineering practices.
  • Experience with C++ development and Virtual Memory System (VMS) platforms.
  • Experience working in Scrum or other Agile software delivery environments.

Important info about this role:
  • You must currently possess valid and unrestricted U.S. work authorization to be considered for this role. Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or TN, or any candidate requiring sponsorship, now or in the future, will not be considered for this role.
  • We're better together. This role is fully on-site.
  • This is a full-time, direct-hire position, and no contract options for unsolicited agency submissions will be considered.

#LI-IH1
Salary Range
$110,000.00 - $186,000.00
These pay ranges apply to employees in New Jersey and New York. Pay ranges for employees in other states may differ.
It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.
For incentive eligible associates, the successful candidate is eligible for an annual incentive opportunity which may be delivered as a mix of cash bonus and equity awards in the Company's sole discretion.
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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