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Sr Python Engineer Jobs in Saint Louis, MO (NOW HIRING)

Senior Network Software Engineer

Shiloh, IL · On-site

$96K - $132K/yr

The Senior Network Software Engineer will support the development and release of new software tools ... Design, develop, document, test and release software written in Python, XML, and other languages ...

Senior Network Software Engineer

Shiloh, IL

$96K - $132K/yr

The Senior Network Software Engineer will support the development and release of new software tools ... Design, develop, document, test and release software written in Python, XML, and other languages ...

Senior Data Engineer

O Fallon, MO · On-site

$99K - $134K/yr

Title and Summary Senior Data Engineer Who is Mastercard? Mastercard is a global technology company ... Python/Java, Databricks, Hadoop, and cloud-native technologies to support enterprise data and ...

You will leverage senior-level Python programming skills to build production-ready tools, automate manual processes, and develop reusable analytic capabilities. Your work will include designing ...

You will leverage senior-level Python programming skills to build production-ready tools, automate manual processes, and develop reusable analytic capabilities. Your work will include designing ...

Sr. Scala Developer

Saint Louis, MO · On-site

$53 - $70/hr

Louis, Missouri 08-03-2015 Senior Scala Developer w/hands-on experience writing Scala architecture on OS X and AWS models -- experience coding in Clojure, Java, and/or Python also a plus. Client is ...

Senior Storage Engineer Location: Arnold, MO (On Customer Site) Clearance: TS/SCI Citizenship: US ... PowerShell/Python scripting experience. * Experience leveraging scripts to audit and enforce ...

Senior Storage Engineer Location: Arnold, MO (On Customer Site) Clearance: TS/SCI Citizenship: US ... PowerShell/Python scripting experience. * Experience leveraging scripts to audit and enforce ...

Senior DevOps Engineer

Saint Louis, MO · On-site

$126K - $162K/yr

... ENGINEER WILL MAKE AN IMPACT A Senior DevOps Engineer will drive faster, more reliable software ... Comfortable writing Python and BASH to create systems tooling * Ability to contribute code updates ...

Senior DevOps Engineer

Saint Louis, MO · On-site

$126K - $162K/yr

... ENGINEER WILL MAKE AN IMPACT A Senior DevOps Engineer will drive faster, more reliable software ... Comfortable writing Python and BASH to create systems tooling * Ability to contribute code updates ...

Showing results 21-40

Sr Python Engineer information

See Saint Louis, MO salary details

$22.4K

$136.1K

$196.9K

How much do sr python engineer jobs pay per year?

As of Sep 12, 2026, the average yearly pay for sr python engineer in Saint Louis, MO is $136,084.00, according to ZipRecruiter salary data. Most workers in this role earn between $107,400.00 and $159,900.00 per year, depending on experience, location, and employer.

What does a Sr Python Engineer do?

A Sr Python Engineer is an experienced software developer who specializes in designing, developing, and maintaining applications using the Python programming language. They often lead projects, mentor junior engineers, and work on complex problems that require deep technical expertise. Their responsibilities may include writing efficient code, optimizing performance, integrating with APIs or databases, and ensuring the overall quality of software solutions. Additionally, they may collaborate with cross-functional teams to deliver robust and scalable applications.

What are the key skills and qualifications needed to thrive as a Sr Python Engineer?

To thrive as a Sr Python Engineer, you need advanced proficiency in Python programming, strong knowledge of software design patterns, and experience with scalable application development, often supported by a degree in computer science or related field. Familiarity with frameworks like Django or Flask, version control systems such as Git, and cloud platforms like AWS or Azure is typically required, with certifications in cloud or Python development considered a plus. Excellent problem-solving abilities, strong communication, and leadership skills help you collaborate effectively and mentor junior engineers. These competencies are critical for delivering robust, efficient solutions and driving technical excellence within development teams.

What are some common challenges Sr Python Engineers face when working on large-scale applications?

Sr Python Engineers often encounter challenges related to maintaining code quality and scalability as applications grow. Managing dependencies, ensuring optimal performance, and coordinating with cross-functional teams can be complex, especially in distributed systems. Additionally, integrating new technologies or frameworks while maintaining backward compatibility requires careful planning and communication. Proactive code reviews, clear documentation, and collaborative problem-solving are essential to overcoming these challenges.

What is the difference between Sr Python Engineer vs Python Developer?

AspectSr Python EngineerPython Developer
Required CredentialsBachelor's degree in CS or related field, experience in Python, often some leadership skillsBachelor's degree in CS or related field, strong Python skills, often less emphasis on leadership
Work EnvironmentTeam lead, project architect, involved in system design and optimizationCode writing, feature development, bug fixing
Employer & Industry UsageTech companies, startups, enterprise softwareWeb development, data analysis, automation projects

While both roles require strong Python skills, Sr Python Engineers typically have more experience, leadership responsibilities, and involvement in system architecture, whereas Python Developers focus more on coding and feature implementation.

What are popular job titles related to Sr Python Engineer jobs in Saint Louis, MO?

For Sr Python Engineer jobs in Saint Louis, MO, the most frequently searched job titles are:

What job categories do people searching Sr Python Engineer jobs in Saint Louis, MO look for?

The top searched job categories for Sr Python Engineer jobs in Saint Louis, MO are:

What cities near Saint Louis, MO are hiring for Sr Python Engineer jobs?

Cities near Saint Louis, MO with the most Sr Python Engineer job openings:

Infographic showing various Sr Python Engineer job openings in Saint Louis, MO as of August 2026, with employment types broken down into 90% Full Time, 5% Part Time, and 5% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $136,084 per year, or $65.4 per hour.

Senior Network Software Engineer

Scott Air Force Base, IL • On-site

Leidos
IT Services • 10K+ employees

$87K - $157K/yr

Full-time

Medical, Retirement, PTO

Re-posted 20 days ago


Key responsibilities

  • Support the development, testing, and release of software tools using Python, XML, and other languages for the Cisco NSO platform.

  • Integrate software with network devices such as Cisco ASR9K and Juniper MX series routers, and perform network engineering tasks related to design, implementation, and system sustainment.

  • Collaborate with team members, provide mentorship, and proactively identify and mitigate technical risks in a network environment.


Leidos rating

8.3

Company rating: 8.3 out of 10

Based on 153 frontline employees who took The Breakroom Quiz


Job description

Description

Leidos’ Digital Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for a Senior Network Software Engineer located in the Scott AFB, IL area.  The Senior Network Software Engineer will support the development and release of new software tools using the Cisco Network Services Orchestrator (NSO) platform, Python, and other software languages to sustain and manage a Carrier-class Wide Area Network for the Defense Information Systems Agency under the Department of War. Additionally, the position will offer the candidate an opportunity to engage in network engineering using knowledge of routing and system fundamentals in an ISP level network environment. This position is ideal for a networking professional with software development experience looking to develop and expand their abilities and showcase their skills in a fast paced and technically challenging role.

Primary Responsibilities-

  • Design, develop, document, test and release software written in Python, XML, and other languages for use with the Cisco Network Services Orchestrator (NSO) platform.
  • Integrate software with network devices, including Cisco ASR9K and Juniper MX series routers.
  • Perform engineering tasks related to the design, implementation, and integration of network changes and sustainment of customer systems in a Wide Area Network environment.
  • Conduct planning and performance of analytical research, design development, and other tasks to align with customer specifications.
  • Ensure efficient delivery of contract capabilities using industry standards and repeatable processes.
  • Mitigate risks, control costs and schedule variance, and effectively manage large scale, integrated projects.
  • Perform a variety of analytical tasks which include hardware and software design and implementation.
  • Proactively and independently identify, report, monitor, and mitigate technical risks.
  • Frequently communicate and collaborate with other team members to ensure successful completion of project objectives.
  • Provide mentorship and act as a technical resource for lower-level network engineers.

Basic Qualifications-

  • Currently possess an active DoD Secret clearance or higher

  • Currently possess DoD 8750 certification at IAT level II, Security+ CE or equivalent to meet requirement.
  • Python software development experience that includes REST api development, as well as the parsing, generation and validation of JSON.
  • Experience with distributed version control software such as Git and Bitbucket.
  • Experience developing software on a Linux platform.
  • Experience troubleshooting and configuring IP networks using at least one of the following routing methods: BGP, ISIS, OSPF, and/or Static routing.
  • Experience with either service provider or enterprise IP networks using an interface on Cisco (ESR and ASR) and/or Juniper routers.
  • Strong communication skills that enable proactive and effective collaboration with a team.
  • Knowledge of and ability to apply principles, theories, and concepts of Software Engineering.

Preferred Qualifications-

  • Proficient in Juniper and Cisco configuration, troubleshooting, and design.
  • Experience with Cisco IOS XR, JUNOS, and Cisco IOS codes.
  • Network configuration experience, specifically with Juniper or Cisco routers, to include protocols such as BGP, MPLS, VPLS, Pseudowires and QoS.
  • Certifications with major network system vendors such as Cisco are a strong plus
  • Experience developing XML and/or object-oriented programming.
  • Experience developing software using SDN modeling languages and protocols such as YANG, NETCONF and RESTCONF.
  • Full software lifecycle experience (design, development, test, deployment), including deployment to a production environment.
  • Experience developing software including the ability to quickly learn new technologies.
  • Experience creating software design artifacts, including the creation of functional, technical, and architectural design documentation as well as test cases and installation, deployment and configuration documentation.
  • Software Defined Networking experience, particularly experience with Cisco NSO.
  • Possessing project, technical, interpersonal, presentation and problem management skills.

Required Education and Experience-

  • Requires BS and 4-8 years of prior relevant experience or Masters with 2-6 years of prior relevant experience.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:July 23, 2026

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.

Pay Range:Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.


What Leidos employees say

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About Leidos

Sourced by ZipRecruiter

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Reston, VA, US

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