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Senior Python Developer Jobs in Swansea, IL (NOW HIRING)

We are seeking a Software Engineer to support our client's intelligence analysis products and ... Java, JavaScript or Python enterprise application development. Web services architecture, design ...

Strong familiarity with Python Flask, Mapping, Gitlab/DevOps, and ESRI development. * Writing ... From entry-level employees to senior leaders, we believe theres always room to learn. We offer ...

Senior Data Engineer

Saint Louis, MO · On-site

$103.10K - $140K/yr

The Senior Data Engineer is responsible for architecting, implementing, and maintaining scalable ... Streamline data workflows using Python, JSON, Composer, and Airflow, while proactively monitoring ...

Sr. Software Engineer

Hazelwood, MO · On-site

$115.50K - $152.30K/yr

The Senior Software Engineer works within established architectural frameworks, enhances CI/CD and ... Experience developing solutions using Python, including scripting, automation, or data processing ...

Sr. Software Engineer

Hazelwood, MO

$115.50K - $152.30K/yr

The Senior Software Engineer works within established architectural frameworks, enhances CI/CD and ... Experience developing solutions using Python, including scripting, automation, or data processing ...

Sr. Software Engineer

Hazelwood, MO

$113.20K - $149.20K/yr

The Senior Software Engineer works within established architectural frameworks, enhances CI/CD and ... Experience developing solutions using Python, including scripting, automation, or data processing ...

New

Sr. Software Engineer

Hazelwood, MO

$115.50K - $152.30K/yr

The Senior Software Engineer works within established architectural frameworks, enhances CI/CD and ... Experience developing solutions using Python, including scripting, automation, or data processing ...

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Senior Python Developer information

See Swansea, IL salary details

$53.4K

$137.9K

$189.4K

How much do senior python developer jobs pay per year?

As of May 31, 2026, the average yearly pay for senior python developer in Swansea, IL is $137,901.00, according to ZipRecruiter salary data. Most workers in this role earn between $118,000.00 and $158,800.00 per year, depending on experience, location, and employer.

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

To thrive as a Senior Python Developer, you need advanced proficiency in Python programming, experience with software architecture, and a solid understanding of algorithms and data structures, usually backed by a degree in computer science or related fields. Familiarity with frameworks like Django or Flask, version control systems such as Git, and containerization tools like Docker are typically required, alongside knowledge of modern CI/CD pipelines. Strong problem-solving abilities, effective communication, and leadership skills help you collaborate with teams and mentor junior developers. Mastery of these skills ensures the delivery of scalable, maintainable software solutions and the ability to drive technical excellence within development teams.

What are some common challenges faced by Senior Python Developers when leading a development team?

Senior Python Developers often encounter challenges such as balancing hands-on coding with mentoring junior team members and ensuring code quality across the team. They are also responsible for making architectural decisions, which requires staying updated on best practices and emerging Python frameworks. Additionally, coordinating collaboration between cross-functional teams (like DevOps, QA, and front-end developers) can be complex, especially in agile environments where requirements may shift rapidly. Overcoming these challenges helps foster a productive and innovative team culture.

What are the main responsibilities of a Senior Python Developer?

A Senior Python Developer is responsible for designing, developing, and maintaining complex software applications using the Python programming language. They lead the technical aspects of projects, mentor junior developers, and ensure code quality through code reviews and best practices. Additionally, they collaborate with cross-functional teams to gather requirements, solve technical challenges, and deploy scalable and efficient solutions. Senior Python Developers are also expected to stay updated with the latest trends and advancements in Python and related technologies.

What is the difference between Senior Python Developer vs Python Developer?

AspectSenior Python DeveloperPython Developer
Required ExperienceTypically 5+ years, with leadership and complex project experienceUsually 1-3 years, focusing on core Python skills
ResponsibilitiesDesigning architecture, mentoring, handling complex systemsWriting code, debugging, implementing features
CertificationsOptional but beneficial (e.g., Python certifications, cloud certs)Often not required
Work EnvironmentCollaborative teams, project planning, code reviewsDevelopment-focused, task-oriented

The main difference between a Senior Python Developer and a Python Developer lies in experience, responsibilities, and leadership. Senior developers handle complex projects, mentor others, and often participate in architecture decisions, while Python Developers focus on coding and feature implementation. Both roles are essential in tech companies, but the senior role requires more experience and broader skills.

What cities near Swansea, IL are hiring for Senior Python Developer jobs? Cities near Swansea, IL with the most Senior Python Developer job openings:
Senior Level Software Developer

Senior Level Software Developer

DCS Corp

Saint Louis, MO

$53 - $70/hr

Full-time

Posted 17 days ago


Job description

DCS Corp. is an employee-owned organization with a reputation for agile and efficient development of technology solutions for U.S. Defense, Aerospace, Human Factors, and Security markets. We continue to provide innovative solutions with our multidisciplinary teams formed with exceptional employees. We are seeking a Software Engineer to support unique systems solutions for the National Geospatial-Intelligence Agency (NGA).

We are seeking a Software Engineer to support our client's intelligence analysis products and capabilities. This position involves providing software development capabilities to enhance existing and emerging client capabilities, including design and development, modernization of existing applications and services, and operations and sustainment. The role focuses on driving the client's adaptation of higher levels of automation and operational efficiency through agile development methodologies, rapid prototyping, and modern technology stacks.

Essential Job Functions:

Develop, modernize, and maintain software applications and services. Contributes to the design and architecture of high-performance applications. Leverage agile methodologies to enhance operational efficiency. Participate in rapid prototyping to quickly iterate and improve solutions. Utilize modern technology stacks to meet client needs. Implement CI/CD pipelines using GitLab. Collaborate with cross-functional teams to deliver high-quality software solutions.

Required Skills:

Due to the sensitivity of customer related requirements, U.S. Citizenship is required.

At least a BS in Computer Science/Computer Engineering or Information Technology with at least 8 years of related experience.

Applicants selected will be subject to a U.S. Government background investigation and must meet eligibility requirements for access to classified information.

Must have an active TS/SCI security clearance with the ability to maintain clearance.

Demonstrated firsthand experience in at least three of the following:

Java, JavaScript or Python enterprise application development.

Web services architecture, design, and development.

Relational database design.

Spatial database design.

NoSQL database design.

Micro-service architecture, design and development.

Containerization and/or Orchestration.

API Development.

Cloud Native Development, AWS, Azure, Google Cloud or similar Cloud Service providers.

Demonstrated experience with relational database development.

Must have minimum of 3 years or more experience with agile and lean philosophies, with experience serving as scrum or team lead a plus.

Demonstrated experience with Continuous Integration and Continuous Delivery (CI/CD) techniques, test-driven development, or automated testing practices.

Desired Skills:

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.

Or, a minimum, as equivalent to education, of 12 years of experience in software engineering/development, or a related area that demonstrates the ability to successfully perform the duties associated with this work may be substituted for a technical degree.

Possesses at least one of the Agile Development Certifications.

Certified Scrum Master.

Agile Certified Practitioner (PMI-ACP).

Certified Scrum Professional.

Demonstrated experience in development of customized code, scripts, modules, macro procedures, or libraries to implement specialized spatial analysis functions using languages such as Python, Java, JavaScript, PHP, C, Perl, or similar scripting and development languages.

Demonstrated experience working independently with clients or stakeholders to develop user-stories in support of full-service consumer and business applications.

Demonstrated experience in integration and tailoring of geospatial Commercial Off-The-Shelf (COTS) software applications; specialized software and database development and maintenance; integration of related specialized hardware; engineering studies to identify and remedy geodata processing bottlenecks.

Demonstrated experience with government and/or commercial imagery products, to include SAR or related RADAR imaging technologies.

Demonstrated experience working with and developing geospatial information systems (GIS) to include open-source and proprietary geospatial formats.

Demonstrated experience in use and development with common geospatial tools, data, and operating platforms. 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.

Data formats including KML, KMZ, NITF, TIFF, JPEG, GeoPDF, and similar geo-related formats and data structures.

Operating Platforms – ESRI, OpenGeo Suite, or similar.

In-depth experience abstracting new or legacy systems via standards-based API’s to include web services. Including but not limited to Open Geospatial Consortium standards.

Demonstrated experience in at least one of the following:

Developing terrain analysis visualization and algorithms.

Developing automated detection algorithms.


DCS logo

About DCS

Sourced by ZipRecruiter

DCS Corp is a renowned name in the technology industry, headquartered in Alexandria, VA, US. Found in the late 1970s, DCS Corp provides a broad spectrum of advanced technology, engineering, and analytic solutions for national security clients. The firm specializes in delivering sophisticated systems and technology for land, air, and maritime platforms. They are known for being deeply committed to their mission of enhancing national security.

Industry

Guided missile and space vehicle manufacturing

Company size

1,001 - 5,000 Employees

Headquarters location

Alexandria, VA, US

Year founded

1977

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