647 Results for

Lead Software Engineer Jobs in O Fallon, MO

Jobs

St. Louis, MO

$125,000–$155,000 / year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Represent the Firm in Client Meeting; Supervise Projects from Concept through Completion; Serve as the Technical Lead Delegating work and Mentoring Staff; Provide Design Review and QA/QC.

4 days ago

St. Louis, MO

$97,240–$162,240 / year

Design, implement, and maintain high-speed CI/CD pipelines using GitHub Actions/Azure DevOps for cloud-native workflows and Jenkins for complex, cross-platform on-premises build automation. Compensation decisions and the base range for this role take into account many factors including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs.

3 days ago

O Fallon, MO

$115,000–$184,000 / year

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. 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.

Today

Fenton, MO

$67,000–$100,000 / year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Retrofits & Upgrades: Assist in modernizing hydraulic press controls, upgrading outdated PLCs, HMIs, motion controllers, and hydraulic servo systems for improved performance and automation.

4 days ago

Fenton, MO

$67,000–$100,000 / year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Installation & Commissioning: Install and commission press systems at customer sites, ensuring proper operation and compliance with specifications.

4 days ago

Weldon Spring, MO

$88,000–$130,000 / year

If you require reasonable accommodation in completing this application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please direct your inquiries to Midland States Bank Human Resources at HR@midlandsb.com. The role ensures scalable, secure, and compliant solutions using the Salesforce Financial Services Cloud platform, supporting business objectives and optimizing system functionality.

13 days ago

O Fallon, MO

$122,000–$207,000 / year

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. All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and therefore, it is expected that the successful candidate for this position 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 .

1 day ago

St. Louis, MO

Or, a Bachelor of Science or equivalent degree in Computer Science, Engineering, Mathematics, Information Systems or equivalent technical degree and a minimum of 10 years of experience in full stack development to include Java, Web services, Database, and micro-service development software, engineering/development, or a related area that demonstrates the ability to successfully perform the duties associated with this work. These may include, but are not limited to: Tools - Boundless Spatial suite, Remote View, PostGRES/PostGIS, Oracle Spatial and/or other geospatial databases, ArcGIS Desktop, ArcGIS Server, Image Server, and File Geodatabases.

7 days ago

Hazelwood, MO

$70–$80 / hour

Support/lead Systems Engineering efforts such as requirements decomposition, system architecture, system analysis, specification development, trade studies, program planning, interfaces management, risk management, certification planning & execution, verification & test planning, and overall integration and capture them in the MBSE model as appropriate. Understanding of various engineering analyses, including affordability, safety, reliability, maintainability, testability, human systems integration, survivability, vulnerability, susceptibility, system security, regulatory, certification, product assurance and other specialties quality factors into a preferred configuration to ensure mission success.

3 days ago

St. Louis, Missouri

$55–$60 / hour
Contractor

The specific compensation for this position will be determined by several factors, including the scope, complexity, and location of the role, as well as the cost of labor in the market; the skills, education, training, credentials, and experience of the candidate; and other conditions of employment. Utilize AWS services such as Elastic Beanstalk, ALB, ELB, Autoscale, CloudWatch, Redis Elasticache, Code Build, Code Deploy, and Lambda.

6 days ago

St. Louis, Missouri

$80,000–$110,000 / year

The specific compensation for this position will be determined by several factors, including the scope, complexity, and location of the role, as well as the cost of labor in the market; the skills, education, training, credentials, and experience of the candidate; and other conditions of employment. 3+ years of experience with local and long-distance carriers, contact center telephony systems, interactive voice response, computer/telephony integration (VoIP), disaster recovery development, and telephony hardware.

4 days ago

St Louis, MO

This role focuses on delivering electrical protection & control and physical substation designs, ranging from small distribution facility upgrades to large transmission projects. We are recruiting on behalf of a global engineering and consulting client for an Electrical Engineer – Substation to support projects across the U.S. and internationally.

14 days ago

Saint Louis, MO

The role requires strong hands-on technical depth in secure software development, application security testing, vulnerability management, and emerging AI security risks, including prompt injection, model abuse, insecure integrations, and data leakage. Implement, integrate, tune, and scale security tooling across application and AI environments, including runtime monitoring, governance controls, testing platforms, and posture management capabilities, with a focus on coverage, signal quality, and operational effectiveness.

7 days ago

O Fallon, MO

$212,000–$339,000 / year

Vice President, Software Engineering - Decision Management Program Join Mastercard's Services Technology organization as an engineering leader for the Decision Management Program (DMP)-a patented, real-time decisioning platform that powers fraud prevention, risk scoring, and identity verification across the global payments network. 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.

Today

O Fallon, MO

$76,000–$127,000 / year

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. The BizOps team is looking for a Site Reliability Engineer who can help us solve problems, monitor Mainframe application, migration of linux servers and lead Mastercard in DevOps automation and best practices.

1 day ago

St. Louis, MO

$50–$55 / hour

Principal-level technical leader within Mobile organization, owning architectural decisions and driving technical strategy across multiple teams. Own end-to-end technical architecture for cross-team initiatives (provisioning, billing, network, customer/agent facing apps).

30+ days ago

St. Louis, MO

$78,406–$170,000
Full time

Huntington Ingalls Industries: Mission Technologies Division is actively searching for a Sr Cloud Engineer to join our team at Moonshot Labs in St Louis, MO, to help the National Geospatial-Intelligence Agency with ensuring the reliability, scalability, and performance of new software applications. LEVEL 5 = 15 years relevant experience with Bachelors in related field; 13 years relevant experience with Masters in related field; 10 years relevant experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 19 years relevant experience.

26 days ago

O Fallon, MO

$94.35–$98.24 / hour

Our client, a Credit Card Company, is looking for a Lead Software Engineer x 2 for their O'Fallon, MO/ Hybrid location. Strong Power Automate experience, delivering reliable, production-grade workflows.

6 days ago

O Fallon, MO

Job Description: Overview: As part of an exciting, fast paced environment developing digital identity and security solutions in the mobile and e-commerce space, this position will provide technical expertise within the development lifecycle for new products and services. Experience with a variety of architectural patterns including high performance, high availability transaction processing systems and multi-tiered web applications .

Today

O'Fallon, MO

$140,000–$231,000 / year

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. Overview: Mastercard's Global Credit Card Authorization team is seeking a Lead Software Development Engineer in Test (Lead SDET) to drive quality engineering for one of the most critical transaction processing platforms in the world.

30+ days ago

Saint Louis, Missouri

As a Lead Software Engineer at Safety National, you will serve as a technical expert and mentor, guiding your team through full-stack development projects using modern technologies like .NET Core, Azure services, and NoSQL databases. Since 1942, we’ve been an industry leader, valuing integrity, teamwork, and stability while providing competitive rewards, top-tier benefits, career growth opportunities, and flexible work options that promote balance.

30+ days ago

Saint Louis, MO

They are accountable for execution of all applicable risk programs (Credit, Market, Financial Crimes, Operational, Regulatory Compliance), which includes effectively following and adhering to applicable Wells Fargo policies and procedures, appropriately fulfilling risk and compliance obligations, timely and effective escalation and remediation of issues, and making sound risk decisions. Review and analyze complex, large-scale technology solutions for tactical and strategic business objectives, enterprise technological environment, and technical challenges that require in-depth evaluation of multiple factors, including intangibles or unprecedented technical factors.

26 days ago

O'Fallon, MO

$140,000–$231,000 / year

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 Mastercards security policies and practices; Ensure the confidentiality and integrity of the information being accessed; Report any suspected information security violation or breach, and. 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.

30+ days ago

St Louis, MO

$100,300–$150,465 / year

The IT Engineer IV will work with a team of developers and interact closely with business subject matter experts to design and build solutions that help Medica members, providers and brokers do business with us using our portals. This role is responsible for developing and supporting technology solutions to advance the Digital applications by using the latest technology, integrating with multiple data sources, and solving complex problems.

17 days ago

O Fallon, MO

Today

OFallon, MO

$140,000–$231,000 / year

Unlike similar quality/testing roles in other organizations, Quality Engineering position at MasterCard requires firm knowledge and hands on software development and architecture skills on par with software developer to work closely with developers to build test automation, test infrastructure, and perform code analysis/review to enable development quality. Job Description Summary Overview • Quality Engineering team within MasterCard is about creating an ecosystem to build a world beyond waiting for all delivery teams to help achieve time-to-market, quality excellence, and higher customer satisfaction within all verticals including core, emerging payments, and value-added services.

30+ days ago

O'Fallon, MO

$140,000–$231,000 / year

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. The team is responsible for developing the best of breed Azure Platform capabilities to application development teams such that automated cloud infrastructure can be provided to software engineering and operation teams.

30+ days ago

Berkeley, Missouri

Bachelor of Science degree from an accredited course of study in engineering, engineering technology (includes manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science and 5+ years of related work experience OR Bachelor’s Degree and 13+ years of directly related work experience OR 17+ years of related, relevant experience. Phantom Works is an advanced research and development organization responsible for engaging customers through cutting-edge visual modeling and simulation; innovating cross-cutting concepts and technologies; prototyping solutions to extend current products and win new programs; and developing new businesses and entering new markets.

10 days ago

$127,111.68–$211,852.80 / year

The base salary range is not an absolute, but a guide, and actual offers will be based on the individual candidate's knowledge, skills, education, experience, location, market conditions, and other compensation components. As a Stewart employee, you'll be joining a company that was named a 2024-2025 Best Company to Work For by U.S. News & World Report, and a 2025 Top Workplace by USA Today.

30+ days ago

St. Louis, MO

Overview We are seeking a full-time Software Engineer - OEM Airframe Lead at Garmin's U.S. headquarters in the Greater Kansas City area or at Garmin's Greater St. Louis metro area or Great Phoenix metro area. This role provides a customerfacing opportunity with aircraft Original Equipment Manufacturers (OEMs) in addition to software engineering responsibilities.

30+ days ago

Saint Louis, MO

Lead Information Technology Specialist APPSW Software Engineer - Department of the Treasury, US.

9 days ago

Berkeley, Missouri

Bachelor of Science degree from an accredited course of study in engineering, engineering technology (includes manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science and 9+ years of related work experience OR Bachelor’s Degree and 13+ years of directly related work experience OR 17+ years of related, relevant experience. Knowledge of software practices (e.g., configuration control, change management, problem reporting, software design, peer review, testing, and T&E specific practices), programming languages, operating systems and computing technology applicable to laboratory and flight test systems, including real-time, non-real-time, network-centric, monitoring and control applications.

4 days ago

St. Louis, MO

$102,500–$210,600 / year

Prior experience using methodologies and tools such as XP, Lean, DevSecOps, SRE, ADO, GitHub, and SonarQube to rapidly deliver high-quality solutions, as well as familiarity with ServiceNow-specific tools like ServiceNow Studio, Automated Test Framework (ATF), and ServiceNow CI/CD practices. Advanced Technical Proficiency: Possess deep expertise in modern software engineering practices and principles, including Agile methodologies and DevSecOps to deliver daily product deployments using full automation from code check-in to production with all quality checks through SDLC lifecycle.

19 days ago

O'Fallon, MO

$140,000–$231,000 / year

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. Extensive GenAI/LLM experience: model evaluation, governance, tuning, API patterns, orchestration, agents, RAG, prompt engineering, chunking, embeddings, vector stores, model hubs, and fine tuned/open source models.

30+ days ago

St. Louis, MO

RGi provides opportunities, resources, training, and mentorship to all our employees to let them take control of their careers and become a leader or a crucial member of our company. A strong working knowledge of: AWS, Azure, or similar cloud platforms, MySQL, PostgreSQL, or SQL Server.

30+ days ago

OFALLON, MO

Position Title: Staff Software Engineer / Architect – Java Modernization (AWS / Kubernetes). to lead the modernization of a largescale, mission critical Java platform.

30+ days ago

Saint Louis, Missouri

Assists in performing root cause analysis and interprets the results; provides input into action plan (e.g., provides input into prioritization of offensive/customer-facing issues and defensive/internally focused backlogs) . Analyzes, designs, codes, tests, configures and modifies software projects and/or products or enhancements using various programming languages, technologies and development methodologies.

30+ days ago

Remote/Teleworker, MO

Remote

$87,100–$157,450 / year

You will collaborate with a diverse workforce within a matrix environment and be able to communicate effectively by obtaining and synthesizing requirements from internal and external stakeholders, while working with the team to deliver a ServiceNow implementation that meets our customers' needs. For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

10 days ago

saint louis, MO

RGi provides opportunities, resources, training, and mentorship to all our employees to let them take control of their careers and become a leader or a crucial member of our company. Collaborate with team members to assess tickets, test functionality, and deliver features that meet User Story Acceptance Criteria.

30+ days ago

$30.19–$45.29 / hour

As a seasonal Associate Software Engineer, you will work closely with Senior, Lead, or Principal Software Engineers along with Product Owner to design, develop, and maintain software components and products that support H&R Block business applications. Maintain and improve current knowledge on the latest technologies relevant to the role regarding algorithms, language, design methodology, third-party development tools, application platforms, hardware compatibility, and operating systems.

30+ days ago

O Fallon, MO

$92,000–$147,000 / year

Using secure data and networks, partnerships, and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. 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.

Today

Remote

$101,200–$161,900 / year

Cross-Functional Partnership: Work closely with product managers, business leaders, architects, cross-team peers, and vendors to prioritize and deliver high-value outcomes. With 70,000 associates and 9,000 retail tax locations across North America, Australia, Ireland, and India, we have helped millions of clients and countless communities.

30+ days ago

Missouri, MO

$39.23–$58.85 / hour

Maintain and improve current knowledge on the latest technologies relevant to the role regarding algorithms, language, design methodology, third-party development tools, application platforms, hardware compatibility, and operating systems. With 70,000 associates and 9,000 retail tax locations across North America, Australia, Ireland, and India, we have helped millions of clients and countless communities.

30+ days ago

Missouri, MO

Remote

$101,200–$161,900 / year

Design and build Enterprise secure, scalable APIs and service components (REST/HTTP, event-driven integrations, and microservice patterns when needed). Explore and implement GenAI capabilities responsibly: integrate Azure OpenAI into services/apps where it adds business value (e.g., grounded Q&A, summarization, automation, developer tooling).

19 days ago

$101,200–$161,900 / year

When you join us as a seasonal Senior Software Engineer, you will use your technical expertise to design, develop, and maintain software components and products that support H&R Block business applications and transform our technology. With 70,000 associates and 9,000 retail tax locations across North America, Australia, Ireland, and India, we have helped millions of clients and countless communities.

3 days ago

Saint Louis, Missouri

Design, implement, and maintain high-speed CI/CD pipelines using GitHub Actions/Azure DevOps for cloud-native workflows and Jenkins for complex, cross-platform on-premises build automation. Work with the team to help design and implement monitoring frameworks to track build performance; assist in automated load and performance testing of the Python stack to identify regressions before release.

10 days ago

$106,605–$284,280 / year

Benefit solutions that address the different needs and preferences of our colleagues including paid time off, flexible work schedules, family leave, dependent care resources, colleague assistance programs, tuition assistance, retiree medical access and many other benefits depending on eligibility. This role owns production support strategy for RPA and automation platforms, leads complex incident resolution, and drives proactive improvements to reduce operational risk.

30+ days ago

Saint Louis, Missouri

A Master of Science or equivalent degree in Computer Science, Engineering, Mathematics, Information Systems, Cybersecurity, or equivalent technical degree and a minimum of 8 years of experience in full stack development to include Java, Web services, Database, and micro-service development software, engineering/development, or a related area that demonstrates the ability to successfully perform the duties associated with this work. Or, a Bachelor of Science or equivalent degree in Computer Science, Engineering, Mathematics, Information Systems or equivalent technical degree and a minimum of 10 years of experience in full stack development to include Java, Web services, Database, and micro-service development software, engineering/development, or a related area that demonstrates the ability to successfully perform the duties associated with this work.

4 days ago

St. Louis, MO

In this role, you will develop embedded software and graphics features for Garmin avionics products, working across technologies including C and Python on innovative mapping and display platforms. Youll collaborate with a highly technical team supporting next-generation aviation products while contributing to new projects and feature development across Garmins avionics portfolio.

30+ days ago

St. Louis, MO

Overview We are seeking a full-time Senior Software Engineer - Aviation Displays at Garmin's U.S. headquarters in the Greater Kansas City area, or Garmin's office location in Chandler, AZ or St. In this role, you will be responsible for providing technical leadership and project planning for software development for products, applications, or systems new to Garmin as an individual contributor.

30+ days ago

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Lead Software Engineer Jobs in O Fallon, MO

Sr. Mechanical Engineer P.E. Jobot

Software Development Engineer II - CI/CD & Platform Automation Engineer (DevOps) Esri

Senior Software Engineer Mastercard

Controls Service Engineer Jobot

Mechanical Service Engineer Jobot

Senior Salesforce Engineer- Financial Services Cloud Midland States Bank

Lead, Site Reliability Engineer Mastercard

Senior Level Software Developer DCS Corporation

MBSE Systems Engineer Innova Solutions

Python API Engineer Pinnacle Technical Resources

CX Technology Engineer - Senior Pinnacle Technical Resources

Electrical Engineer - Substation Gables Search Group

AI-Application Security Engineer Stifel

Vice President, Software Engineering - Decision Management Program Mastercard

BizOps Engineer II Mastercard

Java Software Developer Tanisha Systems

Cloud Engineer Company Confidential

Lead Software Engineer x 2 ICONMA, LLC

Lead Software Engineer Omega Solutions

Lead Software Development Engineer in Test (Lead SDET) Mastercard Inc

Lead Software Engineer (.Net) Safety National

Lead .NET Full Stack Software Engineer Wells Fargo & Co

Lead Software Engineer Mastercard Inc

Technical Lead Software Engineer (Java, React, Spring boot) Medica Health Plans Inc

Lead Software Engineer x 2 ICONMA

Lead, Software Engineer Mastercard Inc

Lead Software Engineer (Azure Platform Engineering) Mastercard Inc

Lead Software Engineer–Developer Boeing

Lead Software Engineer Stewart Title Guaranty Company

Software Engineer - OEM Airframe Lead Garmin Ltd

Lead Information Technology Specialist APPSW Software Engineer Department of the Treasury, US

Lead Software Test & Verification Engineer, Phantom Works Boeing

Lead ServiceNow Software Engineer Deloitte Touche Tohmatsu Ltd

Lead AI Software Engineer- AI Enablement Mastercard Inc

Software Engineer Reinventing Geospatial, Inc. (RGi)

Staff Software Engineer / Architect Java Modernization (AWS / Kubernetes) Yantran LLC

Senior Software Engineer-Oracle EPM Ameren

ServiceNow Software Engineer Leidos Holdings Inc

Full Stack Software Engineer Reinventing Geospatial, Inc. (RGi)

Associate Software Engineer, Seasonal H&R Block Inc

Software Engineer II Dynamic Yield

Sr Software Engineer C# H&R Block Inc

Seasonal, Software Engineer - PT H&R Block Inc

Senior Software Engineer-C# H&R Block Inc

Senior Software Engineer, Seasonal H&R Block Inc

Software Development Engineer II- CI/CD & Platform Automation Engineer (DevOps) Esri

Staff Software Development Engineer-Automation Engineer CVS Health Corp

Senior Software Engineer Freedom Technology Solutions Group

Senior Software Engineer - Embedded C Garmin Ltd

Senior Software Engineer - Aviation Displays Garmin Ltd

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