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Weekend Software Engineer Jobs in St Louis, MO (NOW HIRING)

Software Engineer Location: St. Louis, MO Security Clearance: Active TS/SCI (or SCI eligibility) We question. We listen. We adapt. Be honest. Be pragmatic. Omni Federal, a Washington, DC-based ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Title and Summary Senior Software Engineer Who We Are Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a ...

Software Engineer II

O Fallon, MO · On-site

$92K - $147K/yr

Title and Summary Software Engineer II Who is Mastercard? Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that ...

Lead Software Engineer

O Fallon, MO · On-site

$120 - $190/hr

We have partnered with our client in their search for a Lead Software Engineer in O'Fallon, MO. Responsibilities * This job is a developing subject matter expert in the Software Engineering area ...

Title and Summary Lead Software Engineer Overview: Mastercard's Global Credit Authorization team is seeking a Lead Software Engineer (C/C++) to build and enhance high-performance, mission-critical ...

Senior Software Engineer

O Fallon, MO

$114K - $151K/yr

Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy ...

Senior Software Engineer

Saint Louis, MO · On-site

$119K - $157K/yr

Our software engineering positions provide you the opportunity to join a team of talented engineers working with leading-edge technology. You are ideal for this position if you are a forward-thinking ...

Senior Software Engineer

Saint Louis, MO · On-site

$116K - $153K/yr

Position Description We are seeking a Senior Software Engineer who is passionate about building modern, customer-facing applications and who also brings strength in cloud engineering and software ...

Senior Software Engineer

Saint Louis, MO · On-site

$116K - $153K/yr

Our software engineering positions provide you the opportunity to join a team of talented engineers working with leading-edge technology. You are ideal for this position if you are a forward-thinking ...

Title and Summary Lead Software Engineer Overview: Mastercard's Global Credit Authorization team is seeking a Lead Software Engineer (C/C++) to build and enhance high-performance, mission-critical ...

Title and Summary Lead Software Engineer Overview Mastercard is a global technology company in the payments industry, focused on powering an inclusive, digital economy that makes transactions safe ...

Job Responsibilities & Requirements We are seeking a Software Engineer to design, develop, and maintain software that powers automated saw systems used in the truss and building materials industry.

Title and Summary Lead Software Engineer Overview Mastercard is a global technology company in the payments industry, focused on powering an inclusive, digital economy that makes transactions safe ...

Showing results 41-60

Weekend Software Engineer information

See St Louis, MO salary details

$61.7K

$143.4K

$199.8K

How much do weekend software engineer jobs pay per year?

As of Aug 18, 2026, the average yearly pay for weekend software engineer in St. Louis, MO is $143,426.00, according to ZipRecruiter salary data. Most workers in this role earn between $116,700.00 and $168,200.00 per year, depending on experience, location, and employer.

What is a weekend software engineer?

Weekend Software Engineers are professionals who primarily work on software development tasks during the weekends. They may be employed part-time, on a contract basis, or as part of a company's flexible work schedule to handle maintenance, updates, or specific projects outside regular business hours. This role is ideal for those who prefer or require non-traditional work hours, and it can involve responsibilities such as coding, debugging, system monitoring, or supporting deployments that are scheduled to minimize business disruptions.

What are some unique challenges and benefits of working as a weekend software engineer?

As a Weekend Software Engineer, you may face challenges such as collaborating with team members who primarily work weekdays, which can require proactive communication and clear documentation. However, this role also offers flexibility and the opportunity to focus on tasks with fewer real-time interruptions. You’ll likely work on maintenance, urgent bug fixes, or project sprints scheduled for off-peak hours. This experience can enhance your problem-solving skills and may position you for future roles that require adaptability or involve critical support work. Additionally, many organizations value weekend engineers for their reliability and willingness to support essential systems outside standard hours.

What are the key skills and qualifications needed to thrive as a weekend software engineer, and why are they important?

To thrive as a Weekend Software Engineer, you need strong programming skills, problem-solving abilities, and a relevant degree or coding experience. Familiarity with popular development tools, version control systems like Git, and cloud platforms is typically required. Effective time management, self-motivation, and clear remote communication are critical soft skills for this role. These skills ensure you can deliver high-quality code efficiently while collaborating with teams or clients during limited weekend hours.

What is the difference between Weekend Software Engineer vs Part-Time Software Developer?

AspectWeekend Software EngineerPart-Time Software Developer
CredentialsBachelor's in CS or related field, coding skillsBachelor's in CS or related field, coding skills
Work EnvironmentProject-based, flexible hours, remote or on-siteProject-based, flexible hours, remote or on-site
Industry UsageTech companies, startups, freelance projectsTech companies, startups, freelance projects
Search & Comparison IntentYesYes

Weekend Software Engineers and Part-Time Software Developers often share similar credentials and work environments, focusing on flexible, project-based work. The main difference lies in terminology; 'Weekend Software Engineer' emphasizes work specifically on weekends, while 'Part-Time Software Developer' may include work during weekdays or evenings. Both roles suit those seeking flexible schedules in tech industries.

Do weekend software engineers work on weekends?

Weekend software engineers may work on weekends if their role requires support outside regular hours, such as maintaining systems or handling urgent issues. However, many positions offer flexible schedules, and weekend work depends on the company's policies and project needs.

What are the most commonly searched types of Software Engineer jobs in St. Louis, MO?

The most popular types of Software Engineer jobs in St. Louis, MO are:

What cities near St. Louis, MO are hiring for Weekend Software Engineer jobs?

Cities near St. Louis, MO with the most Weekend Software Engineer job openings:

Infographic showing various Weekend Software Engineer job openings in St. Louis, MO as of August 2026, with employment types broken down into 1% As Needed, 85% Full Time, 10% Part Time, and 4% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $143,426 per year, or $69 per hour.

Software Engineer

Omni Federal

Saint Louis, MO • On-site

Full-time

Posted 28 days ago


Job description

Job Description


Job Title: Software Engineer

Location: St. Louis, MO

Security Clearance: Active TS/SCI (or SCI eligibility)


We question. We listen. We adapt.

Be honest. Be pragmatic.

Omni Federal, a Washington, DC-based software solutions provider founded in 2017, specializes in delivering mission-critical and enterprise solutions to the federal government. Originating from the Department of Defense's software factory ecosystem, Omni focuses on Command and Control, Cybersecurity, Space, Geospatial, and Modeling Simulation. The company leverages commercial technology to enhance the capabilities of the DoD, IC, and their end-users, with innovation driven by its Omni Labs and SBIR Innovation centers. Omni has a presence in Washington D.C., Boston, MA, Colorado Springs, CO, San Antonio, TX, and St. Louis, MO.

Why Omni?

  • Environment of Autonomy

  • Innovative Commercial Approach

  • People over process

We are looking for a passionate and mission-focused Principal Software Engineer to join our Geospatial Center of Excellence. This is a unique opportunity to be part of an exciting initiative at NGA, where modern software development practices are being used to address critical mission challenges for the agency and its users. You will be working with a modern technology stack, rapidly developing intelligence analysis products, and contributing to a culture of innovation. We seek candidates who are energized by modern architectures and eager to solve challenging client problems.

https://trajectorymagazine.com/software-is-core-to-ngas-mission/">https://trajectorymagazine.com/software-is-core-to-ngas-mission/


Required Skills:

  • 5+ years of software development experience or 3+ with a Masters Degree

  • Hands-on experience with Python in production application development environments or building large-scale ETL/data pipelines (beyond basic scripting)

  • Experience with containerized application development and deployment using Docker or Podman on Kubernetes/OpenShift environments

  • Experience with Git-based source control and GitLab CI/CD pipelines, including automated testing and deployment

  • Experience with web services architecture, design, and development, including microservice architectures

  • Experience with database design including relational, spatial, and NoSQL databases

  • Experience with Agile methodologies, serving as a Scrum or team lead

  • Active Top Secret clearance with SCI eligibility

  • Bachelor's Degree in Computer Science or related field


Nice to Have:

  • Experience building backend web services using FastAPI or Node.js

  • Experience working with frontend JavaScript technologies (React, TypeScript, Angular, Node.js, etc.).

  • Experience with React is highly preferred

  • Experience with scientific Python libraries such as TensorFlow, SciPy, or Scikit-learn

  • Experience developing cloud-native applications and services within AWS, including S3, ECR, Lambda, and SQS

  • Experience with Spring applications

  • Experience as a full-stack developer, including Web Services, Database, and Front-End Development

  • Experience working with and developing Geospatial Information Systems (GIS), including open-source and proprietary geospatial formats

, About Omni Federal

Omni Federal, founded in 2017 and headquartered in Washington, DC, is a highly specialized software solutions provider with a robust presence in key locations across the United States, including Boston, MA, Colorado Springs, CO, San Antonio, TX, and St. Louis, MO. Born out of the Department of Defense's software factory ecosystem, Omni has rapidly distinguished itself by delivering both mission-critical and enterprise solutions that enhance the technological capabilities of the federal government. With a focus on areas such as Command and Control, Cybersecurity, Space, Geospatial, and Modeling Simulation, Omni leverages cutting-edge commercial technology tailored to government objectives, improving mission performance and delivering transformative outcomes for the Department of Defense (DoD), Intelligence Community (IC), and their end-users. The company's innovative approach is backed by its Omni Labs and SBIR Innovation centers, where they develop advanced platforms and tools in data mesh, secure connectivity, and intelligent automation.