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Contract Java Developer Startup Jobs in New Jersey

USCS

Senior Java Developer

Camden, NJ · On-site

$145K - $165K/yr

Sr. Java Developer Build the systems that operate critical logistics infrastructure. Who We Are ... Write and maintain automated tests - unit, integration, and contract - as a first-class part of ...

360 IT Professionals

JAVA Developer

Jersey City, NJ · On-site

$53.25 - $69/hr

We have more than 30 IT Staffing Services contracts across USA and working closely with Fortune 500 ... Java, j2ee, application server experience with either websphere, jboss, etc, supporting ...

Saxon Global

Java AWS Engineer

Jersey City, NJ · On-site

$54 - $74/hr

Java Developer with AWS and CLOUD/Java AWS Engineer No of Openings :7 Position Type :Contract Branch Code :New York City Projected Start Date :08-17-2017 Zip Code :10041 City :New Jersey State :NJ ...

Apex Systems

Java Developer - NJ, NC

Woodbridge, NJ · On-site +1

$51.50 - $66.75/hr

Job#: 3030676 Java Developer Location: Iselin, NJ (Hybrid) Employment Type ... Contract Role Overview In this contingent resource assignment, the Software Engineer will consult ...

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Contract Java Developer Startup information

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

To excel as a Contract Java Developer in a startup environment, you need strong proficiency in Java programming, object-oriented design, and a solid understanding of software development lifecycles, usually supported by relevant experience or a computer science degree. Familiarity with frameworks like Spring Boot, version control systems (e.g., Git), build tools (e.g., Maven or Gradle), and cloud platforms is often required. Outstanding problem-solving ability, adaptability, and clear communication skills help you collaborate effectively and respond to rapidly changing project needs. These skills and qualities enable you to deliver robust, scalable solutions quickly and efficiently, which is critical in the fast-paced, resource-constrained startup setting.

What are some common challenges Contract Java Developers face when working at startups, and how can they prepare for them?

Contract Java Developers at startups often face fast-paced environments with shifting priorities and limited documentation. Adapting quickly to new codebases, collaborating with small, cross-functional teams, and managing ambiguity are frequent challenges. To prepare, developers should brush up on agile methodologies, familiarize themselves with popular Java frameworks, and be proactive in communicating with stakeholders. Demonstrating flexibility and strong problem-solving skills will help ensure a successful contract period.

What does a Contract Java Developer do at a startup?

A Contract Java Developer at a startup is responsible for designing, developing, and maintaining Java-based applications on a temporary basis, usually to help accelerate specific projects or fill short-term talent gaps. They often work on building scalable backend systems, integrating APIs, and ensuring the product can rapidly evolve as the startup grows. Their work may also involve troubleshooting, optimizing performance, and collaborating closely with other developers, designers, and product managers. Because startups are fast-paced environments, contract developers are expected to adapt quickly and deliver results within tight deadlines.

What is the difference between Contract Java Developer Startup vs Contract Java Developer Enterprise?

AspectContract Java Developer StartupContract Java Developer Enterprise
CredentialsJava certification, relevant experienceJava certification, relevant experience
Work EnvironmentFast-paced, innovative, small teamsStructured, larger teams, formal processes
Employer & IndustryStartups, tech, e-commerceLarge corporations, finance, healthcare
Search & Comparison IntentYesYes

The main difference between a Contract Java Developer Startup and a Contract Java Developer Enterprise lies in the work environment and company size. Startups typically offer a dynamic, fast-paced setting with smaller teams, while enterprises provide a more structured environment with larger teams and formal processes. Both roles require similar credentials and are sought after by companies in different industry sectors.

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 Contract Java Developer Startup jobs in New Jersey? For Contract Java Developer Startup jobs in New Jersey, the most frequently searched job titles are:
What job categories do people searching Contract Java Developer Startup jobs in New Jersey look for? The top searched job categories for Contract Java Developer Startup jobs in New Jersey are:
What cities in New Jersey are hiring for Contract Java Developer Startup jobs? Cities in New Jersey with the most Contract Java Developer Startup job openings:
Contract Java Developer Startup jobs near you
Java Developer :: Jersey City, Tampa, Newark :: Hybrid

Java Developer :: Jersey City, Tampa, Newark :: Hybrid

Data Wave Technologies Inc

Jersey City, NJ • Hybrid

$53.25 - $69/hr

Other

Posted 18 days ago

Job description

Java Developer Generative AI/LLM Engineer
Locations: Jersey City, Tampa, Newark
Work Model: Hybrid
Contract Long Term

Role Overview

Looking for experienced Java developers with strong exposure to Generative AI technologies, including Large Language Models (LLMs), NLP, and Retrieval-Augmented Generation (RAG). The role involves building enterprise-grade AI-powered applications, scalable backend systems, and cloud-native microservices for financial and enterprise clients.

Key Responsibilities

  • Design and develop enterprise applications using Java, Spring Boot, and microservices architecture.
  • Build and integrate Generative AI solutions using LLMs such as OpenAI GPT, Gemini, Claude, Llama, or Mistral.
  • Develop and optimize RAG pipelines for enterprise knowledge retrieval systems.
  • Implement prompt engineering, prompt tuning, and reusable AI workflows.
  • Build AI-powered APIs, copilots, chatbots, and automation solutions.
  • Integrate vector databases such as Pinecone, PGVector, Mongo Atlas, Neo4j, or similar.
  • Work with NLP techniques and unstructured data processing.
  • Deploy AI/ML solutions into production environments.
  • Collaborate with cross-functional teams in Agile/Scrum environments.
  • Ensure secure coding, scalability, performance optimization, and CI/CD best practices.

Required Skills

Core Java Stack

  • Java 8/11/17+
  • Spring Boot
  • REST APIs
  • Microservices
  • Kafka (preferred)
  • Distributed systems

Generative AI / AI Skills

  • Hands-on experience with:
    • LLMs
    • RAG architecture
    • NLP
    • Prompt engineering
    • AI agents / agentic frameworks
  • Experience with:
    • LangChain
    • LlamaIndex
    • Hugging Face
    • Vertex AI
    • OpenAI APIs

Cloud & DevOps

  • AWS / Azure / Google Cloud Platform
  • Docker & Kubernetes
  • CI/CD pipelines
  • Jenkins / GitLab CI / Azure DevOps
  • MLOps concepts

Databases & Data

  • SQL / NoSQL databases
  • Vector databases
  • Handling large-scale unstructured data

Preferred Qualifications

  • Product company background
  • Financial services/domain experience preferred
  • Strong architecture and design skills
  • Experience leading offshore/onshore teams
  • Strong communication and stakeholder management skills

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