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Remote Software Developer Jobs in O Fallon, MO (NOW HIRING)

Senior Software Engineer

O Fallon, MO · On-site +1

$114K - $151K/yr

Title and Summary Senior Software Engineer Overview We work to connect and power an inclusive, digital economy that benefits everyone, everywhere, by making transactions safe, simple, smart, and ...

Collaborate on a Scrum Agile team to design and develop software solutions that provide value to ... At least two (2) years of programming/engineering and design experience with the following skills:

Senior Developer

Sunset Hills, MO · On-site +1

$52.25 - $69/hr

At Grimco, our developers operate across a real, multi-platform technology stack - and their work ... Qualifications REQUIRED QUALIFICATIONS 5+ years of professional software development experience.

Senior Developer

Sunset Hills, MO · On-site +1

$52.25 - $69/hr

As a Senior Developer, you'll contribute to a platform that has powered the business for decades ... Qualifications REQUIRED QUALIFICATIONS • 5+ years of professional software development experience ...

Senior Developer

Sunset Hills, MO · On-site +1

$52.25 - $69/hr

At Grimco, our developers operate across a real, multi-platform technology stack - and their work ... Qualifications REQUIRED QUALIFICATIONS • 5+ years of professional software development experience ...

Lead QA Engineer

Saint Louis, MO · Remote

$50 - $55/hr

Remote - USA Preferred Locations: Missouri, Texas, Florida, Minnesota, Illinois, Georgia, South ... software products. This role partners closely with development and agile scrum teams to define ...

... and software engineering teams for seamless system integration. * Provide technical support for control panel fabrication, wiring, and testing. * Conduct on-site or remote system commissioning ...

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Remote Software Developer information

See O Fallon, MO salary details

$44.9K

$104.6K

$155.3K

How much do remote software developer jobs pay per year?

As of Jul 14, 2026, the average yearly pay for remote software developer in O'Fallon, MO is $104,629.00, according to ZipRecruiter salary data. Most workers in this role earn between $84,200.00 and $121,600.00 per year, depending on experience, location, and employer.

What Is the Job of Remote Software Developers?

Remote software developers design and create computer software programs and systems for their employer or client. Unlike in-house software developers, remote software developers work from home or another location outside of the office. As a remote software developer, you discuss the kind of program you need to create, making sure to clarify with your department or with your client what they need in their application. You may develop an entirely new program or improve an existing one. Remote developers are responsible for a program’s overall framework, and they design precise workflow charts that explain to programmers what code is needed for different aspects of the program. Remote software developers also design tests and protocols for the QA department to follow when they are testing the application.

What is the difference between Remote Software Developer vs Remote Web Developer?

AspectRemote Software DeveloperRemote Web Developer
Required SkillsProgramming languages, software architecture, codingHTML, CSS, JavaScript, front-end/back-end web development
Work EnvironmentSoftware companies, tech firms, startupsWeb agencies, digital agencies, tech companies
CertificationsComputer Science degree, coding bootcampsWeb development certifications, HTML/CSS courses
Common UsageDeveloping applications, software solutionsBuilding websites, web applications

Remote Software Developers focus on creating software applications and systems, requiring programming skills and software architecture knowledge. Remote Web Developers specialize in designing and building websites and web applications, often with expertise in HTML, CSS, and JavaScript. While both roles involve coding and can be remote, their primary focus and skill sets differ, making it important to choose the role that aligns with your expertise and career goals.

How do remote software developers stay connected and collaborate effectively with their teams?

Remote software developers typically use a variety of collaboration tools, such as Slack, Microsoft Teams, and Zoom, to communicate with colleagues and participate in daily stand-ups or sprint planning meetings. Version control systems like GitHub or GitLab are essential for code collaboration and review. Regular check-ins, clear documentation, and agile workflows help ensure everyone stays aligned and productive despite working from different locations. Proactive communication and time management are crucial for overcoming the challenges of remote work and successfully contributing to team goals.

What is a Remote Software Developer?

A Remote Software Developer is a professional who designs, builds, and maintains software applications while working from a location outside of a traditional office, often from home or another remote setting. These developers collaborate with team members using online communication and project management tools. Remote work allows for greater flexibility and access to global job opportunities, but it also requires strong self-motivation and communication skills. Companies hire remote software developers to tap into a wider talent pool and to offer flexible work arrangements.

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

To thrive as a Remote Software Developer, you need strong programming skills, problem-solving ability, and a relevant degree or equivalent experience in computer science or software engineering. Familiarity with common development tools (such as Git, Visual Studio Code, and CI/CD platforms) and frameworks, as well as knowledge of cloud services, are typically required. Excellent communication, self-motivation, and time management skills help you collaborate effectively and stay productive in a remote setting. These skills and qualities are essential for delivering high-quality software, meeting deadlines, and contributing to distributed teams.
What are the most commonly searched types of Software Developer jobs in O'Fallon, MO? The most popular types of Software Developer jobs in O'Fallon, MO are:
What are popular job titles related to Remote Software Developer jobs in O'Fallon, MO? For Remote Software Developer jobs in O'Fallon, MO, the most frequently searched job titles are:
What cities near O'Fallon, MO are hiring for Remote Software Developer jobs? Cities near O'Fallon, MO with the most Remote Software Developer job openings:
Infographic showing various Remote Software Developer job openings in O'Fallon, MO as of July 2026, with employment types broken down into 100% Full Time. Highlights an 100% Remote job distribution, with an average salary of $104,629 per year, or $50.3 per hour.
Senior Software Engineer

Senior Software Engineer

MasterCard

O Fallon, MO • On-site, Remote

$114K - $151K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 6 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 asustainableeconomy where everyone can prosper. We support a wide range of digital payments choices, making transactionssecure, 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

Senior Software EngineerOverview
We work to connect and power an inclusive, digital economy that benefits everyone, everywhere, by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships, and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion for all employees that respect their individual strengths, views, and experiences. We believe that our differences enable us to be a better team - one that makes better decisions, drives innovation, and delivers better business results
About the Role
This is an exciting opportunity for you to join Mastercard and contribute to improving the response time for new applications that support the Authorization payment network. This position is on the performance engineering team that partners with development teams on optimization and testing. We are looking for an experienced engineer that is passionate about performance with a constant focus on improving system quality.
Role
Design, configure, and execute performance tests and drive resolution of failures
Create performance measurements such as requests per second, P95 and P99 response latency, query performance, concurrency, and system utilization
Dig into Java code, databases, middleware, and vendor software to identify performance bottlenecks and resolve them
Improve the performance environment with your own code, automation, and external tools
Apply technical ability to coach and develop junior engineers
Deliver department and external presentations sharing results with stakeholders
All About You
Strong software engineering experience writing applications using Java Spring Boot framework
Strong experience debugging performance issues with APM tools (i.e. Dynatrace, Splunk, Jprofiler, and JMH)
Strong experience optimizing DB queries in PostgreSQL and Oracle
Experience with Payments industry preferred (i.e. ISO 8583 messaging, 4-party model, and payment applications)
Systematic problem-solving approach, coupled with strong communication skills and a sense of ownership and drive
Time/project management, workload prioritization, knowledge sharing and a passion to learn/take on challenges is a must
Self-motivated demonstrating strong organizational and listening skills; and very detail oriented with the ability to carry out assigned tasks with minimal supervision
Strong verbal and written communications skills
Appetite for change and pushing the boundaries of what can be done with automation. Be curious about new technology, infrastructure, and practices to scale our architecture and prepare for future growth
Willingness and ability to learn and take on challenging opportunities and to work as a member of matrix based diverse and geographically distributed project teamMastercard 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: $115,000 - $184,000 USD