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Online Java Developer C2C Jobs in Florissant, MO

Senior Data Engineer

Saint Louis, MO · On-site

$100K - $136K/yr

... Java * Experience scaling Airflow * Experience with dbt * DevOps / CICD experience (Jenkins and ... through our online learning platform with guided career tracks. Are you ready to power your ...

Senior Data Engineer

Saint Louis, MO · On-site

$103K - $140K/yr

... Java * Experience scaling Airflow * Experience with dbt * DevOps / CICD experience (Jenkins and ... through our online learning platform with guided career tracks. Are you ready to power your ...

... Java experience Deep familiarity with test automation frameworks and modern automated testing ... In the US or Canada, if you require accommodations or assistance to complete the online application ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... using Java, Spring boot, Kafka, C++, JNI or similar technologies. • BS in Computer Science or ... In the US or Canada, if you require accommodations or assistance to complete the online application ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Experience with Java/J2EE Experience with cryptographic primitives, concepts, and protocols Good ... In the US or Canada, if you require accommodations or assistance to complete the online application ...

Strong software development experience using C/C++ (Java experience is also valued). Proven ... In the US or Canada, if you require accommodations or assistance to complete the online application ...

Software Engineer II

O Fallon, MO · On-site

$92K - $147K/yr

... programming languages (Java is a must) Familiarity with Agile development practices, testing ... In the US or Canada, if you require accommodations or assistance to complete the online application ...

Showing results 41-60

Online Java Developer C2C information

See Florissant, MO salary details

$14

$52

$71

How much do online java developer c2c jobs pay per hour?

As of Aug 19, 2026, the average hourly pay for online java developer c2c in Florissant, MO is $52.29, according to ZipRecruiter salary data. Most workers in this role earn between $45.24 and $58.51 per hour, depending on experience, location, and employer.

What is an online Java developer C2C?

An Online Java Developer C2C is a software developer who specializes in building applications using the Java programming language and works remotely under a Corp-to-Corp (C2C) contract. This means the developer is usually engaged through their own corporation or a third-party agency, rather than as a direct employee. C2C arrangements are common for contract roles in the tech industry, especially for remote or freelance projects. Java developers in these roles are responsible for coding, testing, and maintaining Java applications, often collaborating with distributed teams.

What are some common challenges online Java developers face when working on a C2C (Corp-to-Corp) basis?

Online Java Developers working on a C2C basis often encounter challenges such as managing client expectations across different projects, ensuring timely communication in a fully remote setup, and adapting quickly to varying codebases and team practices. They must also stay updated with the latest Java frameworks and tools, since each client may require different technical stacks. Additionally, balancing multiple clients or contracts requires strong time management and organizational skills to deliver quality work on schedule.

What are the key skills and qualifications needed to thrive as an online Java developer C2C, and why are they important?

To thrive as an Online Java Developer C2C, you need strong Java programming skills, experience with object-oriented design, and typically a bachelor's degree in computer science or a related field. Familiarity with frameworks like Spring, build tools such as Maven or Gradle, source control systems like Git, and cloud platforms such as AWS is highly valued, along with relevant Java certifications. Excellent problem-solving abilities, self-motivation, and effective remote communication skills set standout candidates apart. These competencies are crucial for delivering robust software solutions efficiently while collaborating remotely in a contract-based environment.

What is the difference between Online Java Developer C2C vs Online Java Developer?

AspectOnline Java Developer C2COnline Java Developer
Work ArrangementContract-to-Contract (C2C) with staffing agencies or clientsDirect employment or freelance projects
CredentialsTypically requires Java certifications, relevant experienceSame as C2C, often with additional company-specific requirements
Work EnvironmentRemote, project-based, client-specificRemote or on-site, depending on employer
Industry UsageCommon in consulting, staffing, and freelance platformsWidespread across industries and companies

Online Java Developer C2C roles are contract-based, often through staffing agencies, offering flexibility but less job security. In contrast, Online Java Developer positions may be direct hires or freelance roles, providing different employment benefits. Both roles require Java expertise and similar credentials, but their work arrangements and industry usage differ.

Is an online Java developer still in demand?

Online Java developers remain in demand due to the widespread use of Java in enterprise applications, web development, and cloud-based services. Skills in frameworks like Spring and experience with cloud platforms can enhance job prospects in this field.

What are popular job titles related to Online Java Developer C2C jobs in Florissant, MO?

For Online Java Developer C2C jobs in Florissant, MO, the most frequently searched job titles are:

What job categories do people searching Online Java Developer C2C jobs in Florissant, MO look for?

The top searched job categories for Online Java Developer C2C jobs in Florissant, MO are:

What cities near Florissant, MO are hiring for Online Java Developer C2C jobs?

Cities near Florissant, MO with the most Online Java Developer C2C job openings:

Lead Software Engineer - Mastercard

Mastercard

O Fallon, MO • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 16 days ago


Job description

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

Lead Software Engineer Overview
Be part of the Artificial Intelligence & Decision Processing Engineering team developing new capabilities for MasterCard‘s Decision Management Platform, which serves as the core for multiple business solutions to combat fraud and validate cardholder identity. Our patented Java-based platform processes billions of transactions per month in tens of milliseconds using a multi-tiered, message-oriented approach for high performance and availability.
• Would you like to develop industry leading solutions for fighting fraud?
• Are you motivated by speeding business solutions to market?
• Do you want to innovate, using cutting edge technologies on challenging business problems?
Role
• Successfully lead major projects and complex assignments with broad scope and long-term business implications.
• Work closely with other technical leads on assigned projects to assist in design and implementation tasks.
• Assist with production support issues by acting as a subject matter expert in resolving incidents and problem tickets.
• Plan, design and develop technical solutions and alternatives to meet business requirements in adherence with MasterCard standards, processes, and best practices.
• Participate in PoCs (Proof of Concept) and help the Department with selection of Vendor Solutions, Technologies, Methodologies and Frameworks.
• Design and build technical roadmaps to optimize services and functions with a focus on performance and cost/benefit optimization
• Conduct brownbag sessions on new and upcoming technologies, methodologies, and application appropriate frameworks.
• Actively look for opportunities to enhance standards and improve process efficiency.
• Be an integral part of the Agile SAFe discover and elaboration sessions. Perform requirements and design reviews, peer code reviews and PCI security reviews to ensure compliance with MasterCard standards.
• Have strong ownership of your team’s software and are deep in the maintenance characteristics, runtime properties and dependencies including hardware, operating system, and build.
• Communicate, collaborate, and work effectively in a global environment. Public speaking as a technology evangelist for Mastercard.
All About You
• Must be high-energy, detail-oriented, proactive and can function under pressure in an independent environment.
• Must provide the necessary skills to have a high degree of initiative and self-motivation to drive results.
• Possesses strong communication skills -- both verbal and written – and strong relationship, collaborative skills, and organizational skills.
• Willingness and ability to learn and take on challenging opportunities and to work as a member of matrix based diverse and geographically distributed project team.
• Knowledge of software development processes including agile processes and test-driven development
• Experience with the design and development of complex, multi-tier cloud native architectures.
• Degree in Computer Science or related field
Essential Skills required:
• Technical experience using Java/J2EE
• Spring Framework (including Spring Boot)
• Distributed Computing at scale
• Cloud technologies like cloud foundry, Kubernetes
• Strong Linux and shell scripting
• Oracle & PL/SQL and advanced SQL scripting
• IDE such as JBoss Developer Studio/IntelliJ
Desirable Skills:
• Experience working in at-scale distributed compute such as Gemfire, Apache Spark, Distributed Redis, Hazelcast, GridGain or similar
• Messaging – MQ and JMS
• Experience integrating vendor and open-source products into an overall system Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact reasonable_accommodation@mastercard.com and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.

Corporate Security Responsibility


All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

  • Abide by Mastercard’s security policies and practices;

  • Ensure the confidentiality and integrity of the information being accessed;

  • Report any suspected information security violation or breach, and

  • Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

In line with Mastercard’s total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.

Pay Ranges

O‘Fallon, Missouri: $140,000 - $231,000 USD