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Contract Java Developer Jobs in Saint Louis, MO (NOW HIRING)

Agentic AI Developer

O Fallon, IL · On-site

$99K - $225K/yr

Experience with programming languages such as Python or Java * Experience with software design ... as well as contract-specific affordability and organizational requirements. The projected ...

Quality Engineer I

O Fallon, MO · On-site

$67K - $87K/yr

Quality Engineer (Glider required) Duration : 12+ months contract Location : O'Fallon, MO Hybrid ... Java, JavaScript with good understanding of Spring boot and RESTful APIs Experience with unit ...

Android Developer

Saint Louis, MO · On-site

$30 - $40/hr

Highly Competitive, commensurate with expertise Type: Full-time (W2 or Contract 1099), 40 hours per ... Proficiency in Java and Kotlin (at least 1 year of experience). Published at least 1 application on ...

Android Developer

Saint Louis, MO · On-site

$30 - $40/hr

Highly Competitive, commensurate with expertise Type: Full-time (W2 or Contract 1099), 40 hours per ... Proficiency in Java and Kotlin (at least 1 year of experience). Published at least 1 application on ...

Experience with programming languages such as Python or Java * Experience with software design ... as well as contract-specific affordability and organizational requirements. The projected ...

... Java Programmer * - 3 years of JUnit, Jenkins/Hudson, Ant/Maven * - Experience coaching and ... Contract to hire after 6 Months Need Citizens Share the Profiles to michael(at)tammina.com Contact ...

... Java Programmer * - 3 years of JUnit, Jenkins/Hudson, Ant/Maven * - Experience coaching and ... Contract to hire after 6 Months Need Citizens Share the Profiles to michael(at)tammina.com Contact ...

... as a Java Programmer - 3 years of JUnit, Jenkins/Hudson, Ant/Maven - Experience coaching and ... Contract to hire after 6 Months Need Citizens Share the Profiles to michael(at)tammina.com Contact ...

Data Engineer Software Developer

Shiloh, IL · On-site

$106K - $128K/yr

... contract, under the Global Automations & Intelligent Network Solutions (GAINS) Team. Seeking a ... Proficiency with data engineering tools and languages such as Python, Java, SQL, and shell ...

Pega developer - ONLY GC or USC

Saint Louis, MO · On-site

$54.75 - $71.75/hr

Pega developer - ONLY GC or USC St. Louis, MO 12 months+ contract General Accountabilities ... Development experience with a Pega 6.0, pega 7.0 and above Development experience with a Java EE ...

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Contract Java Developer information

See Saint Louis, MO salary details

$15

$55

$75

How much do contract java developer jobs pay per hour?

As of Jul 14, 2026, the average hourly pay for contract java developer in Saint Louis, MO is $55.12, according to ZipRecruiter salary data. Most workers in this role earn between $47.69 and $61.68 per hour, depending on experience, location, and employer.

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

To thrive as a Contract Java Developer, you need strong Java programming skills, experience with object-oriented design, and a solid understanding of software development lifecycles, typically supported by a relevant degree or certifications. Familiarity with frameworks like Spring, build tools such as Maven or Gradle, and version control systems like Git is commonly required. Excellent problem-solving, adaptability, and clear communication skills help you efficiently integrate with new teams and projects. These abilities ensure you can quickly deliver high-quality, maintainable code that meets client requirements in a dynamic contract environment.

What are some common challenges faced by Contract Java Developers when integrating with existing teams and projects?

Contract Java Developers often need to quickly adapt to unfamiliar codebases and team workflows, which can be challenging given tight project timelines. Effective communication is essential, as they must coordinate with permanent staff, understand project requirements, and align with established coding standards and deployment processes. Many contractors also need to manage multiple projects or clients simultaneously, requiring strong time management skills. Proactively seeking clarity on expectations and leveraging onboarding resources can help ease the integration process.

What are Contract Java Developers?

Contract Java Developers are software professionals who specialize in the Java programming language and are hired on a contract basis, rather than as permanent employees. They typically work for a set period of time or on a specific project, developing, testing, and maintaining Java-based applications according to the client’s requirements. These developers are often brought in to provide specialized expertise, handle workload spikes, or complete short-term projects. Their roles may include writing code, fixing bugs, integrating systems, and ensuring applications meet performance and security standards.

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

AspectContract Java DeveloperContract Software Engineer
Required CredentialsBachelor's in Computer Science, Java certificationsBachelor's in Computer Science or related, various programming certifications
Work EnvironmentDevelopment teams, client sites, remote optionsDevelopment teams, client sites, remote options
Industry UsageTech, finance, healthcare, e-commerceTech, finance, healthcare, e-commerce
Search & Comparison IntentFocus on Java-specific roles, Java projectsBroader software development roles, multiple languages

Contract Java Developers specialize in Java programming and are often sought for Java-specific projects. Contract Software Engineers have a broader scope, working with multiple programming languages and technologies. Both roles are common in tech industries and share similar work environments, but the Java Developer role is more focused on Java expertise.

What are the most commonly searched types of Java Developer jobs in Saint Louis, MO? The most popular types of Java Developer jobs in Saint Louis, MO are:
What are popular job titles related to Contract Java Developer jobs in Saint Louis, MO? For Contract Java Developer jobs in Saint Louis, MO, the most frequently searched job titles are:
What job categories do people searching Contract Java Developer jobs in Saint Louis, MO look for? The top searched job categories for Contract Java Developer jobs in Saint Louis, MO are:
What cities near Saint Louis, MO are hiring for Contract Java Developer jobs? Cities near Saint Louis, MO with the most Contract Java Developer job openings:
Agentic AI Developer

Agentic AI Developer

Booz Allen Hamilton

O Fallon, IL • On-site

$99K - $225K/yr

Other

Medical, Life, Retirement, PTO

Posted 8 days ago


Booz Allen Hamilton rating

8.8

Company rating: 8.8 out of 10

Based on 47 frontline employees who took The Breakroom Quiz

9th of 58 rated business consultants


Job description

Job Number: R0241538
Agentic AI Developer
The Opportunity:
As an experienced engineer, you know that machine learning is critical to understanding and processing massive datasets. Your ability to conduct statistical analyses on business processes using ML techniques makes you an integral part of delivering a customer-focused solution. We need your technical knowledge and desire to problem-solve to support critical advancements in the Department of War. As a machine learning engineer on our Defense Technology team, you'll train, test, deploy, and maintain models that learn from data to create real-world, mission-critical impacts.
In this role, you'll own and define the direction of mission-critical solutions by applying best-fit ML algorithms and technologies and through the development, deployment, and management of AI agents. You'll be part of a talented team of machine learning engineers across the company and collaborate withdata engineers and product owners to deliver world class solutions to develop cutting edge AI agents capable of solving our military's most challenging missions. Your skills and extensive technical expertise will guide clients as they navigate the landscape of ML algorithms, tools, and frameworks.
Work with us to solve real-world challenges and define ML strategy for the Department of War.
Join us. The world can't wait.
You Have:
  • 3+ years of experience within Machine Learning engineering, data science, data engineering, or software development
  • Experience developing applications using Large Language Models (LLMs)
  • Experience with programming languages such as Python or Java
  • Experience with software design patterns
  • Knowledge of embedding models, vector databases, and semantic search
  • Knowledge of AI safety, guardrails, and responsible AI practices
  • Knowledge of agent planning, reasoning, and execution loops
  • Ability to obtain a Secret clearance
  • Bachelor's degree

Nice If You Have:
  • Experience working with Department of War data or on systems with advanced cyber security requirements
  • Experience with Retrieval-Augmented Generation (RAG) architectures
  • Experience with LangGraph
  • Experience with model evaluation and AI quality metrics
  • Secret clearance
  • Master's degree in AI or a related field

Clearance:
Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information.
Compensation
At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page.
Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $99,000.00 to $225,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date.
Identity Statement
As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud.
Candidate AI Usage Policy
AI is a part of our daily work at Booz Allen, and we are committed to the responsible and ethical use of AI tools. However, we want to ensure a fair candidate process based on your own skills and knowledge. As part of this commitment, the use of artificial intelligence (AI) or other tools to assist with responses during interviews (whether in-person or virtual) is prohibited unless permission is explicitly provided.
Work Model
Our people-first culture prioritizes the benefits of collaboration, whether it occurs in person or virtually. To support engagement and effective communication, employees working virtually are generally expected to have their cameras on during meetings.
  • Remote: If this position is listed as remote, there may still be occasions when you are required to work in person at a Booz Allen or customer facility.
  • Hybrid: If this position is listed as hybrid, you will be expected to work from a Booz Allen facility frequently, in alignment with leadership expectations and the needs of the role. You may also be required to work from or visit a customer facility.
  • Onsite: If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.

Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

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About Booz Allen Hamilton

Sourced by ZipRecruiter

Booz Allen Hamilton is a leading provider of management and technology consulting services to the US government in defense, intelligence, and civil markets. Headquartered in McLean, Virginia, the firm also serves major corporations, institutions, and not-for-profit organizations. Founded in 1914 by Edwin G. Booz, the company has a long-standing tradition of helping clients achieve success by delivering a wide range of consulting services that include strategic planning, human capital and learning, communication, systems development, and others. The company's mission is to empower people to change the world, and it has a reputation for maintaining the highest standards of integrity and-excellence.

Industry

It services

Company size

10,000+ Employees

Headquarters location

McLean, VA, US

Year founded

1914