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Senior Python Developer Jobs in Exton, PA (NOW HIRING)

PJM

(Sr./Lead) Engineer I (II)

Audubon, PA · On-site

$105K - $144K/yr

The (Sr.) Engineer will be working closely and collaboratively with a group of highly skilled team ... Experience with the Python programming language

Ampcus Inc

Sr. Software Engineer

Wilmington, DE · On-site

$118K - $156K/yr

... DevOps teams to automate CI/CD pipelines on AWS. Qualifications : Required : • Strong proficiency in Java and Python programming languages. • Hands-on experience with AWS services (EC2, S3 ...

Vangard, Inc.

Senior AI/ML Engineer

Malvern, PA

$102K - $140K/yr

Collaborate with senior engineers and data scientists in feature development, experiments, and ... Solid Python programming skills and familiarity with ML frameworks (TensorFlow, PyTorch, scikit ...

Vanguard Group, Inc.

Senior AI/ML Engineer

Malvern, PA · On-site

$102K - $140K/yr

Collaborate with senior engineers and data scientists in feature development, experiments, and ... Solid Python programming skills and familiarity with ML frameworks (TensorFlow, PyTorch, scikit ...

Vangard, Inc.

Senior AI/ML Engineer

Philadelphia, PA · On-site

$105K - $144K/yr

Collaborate with senior engineers and data scientists in feature development, experiments, and ... Solid Python programming skills and familiarity with ML frameworks (TensorFlow, PyTorch, scikit ...

360 IT Professionals

Sr Java Developer

Wilmington, DE · On-site

$55.50 - $70.75/hr

Role:- Sr Java Developer Location:- Wilmington, DE. Duration:- 1 Year (Possible Extension) Sr Java ... C/C++, C#, Python, PHP, Ruby, Perl, etc. Experience working with Databases, SQL and Stored ...

TiltEdge Solutions LLC

Software Engineer

Malvern, PA · On-site

$50/hr

Senior Software Engineer (Python / Front-End / AWS) Location: Malvern, PA (Remote / Hybrid). Duration: 6-12 Months Rate: DOE : Role Overview: We are seeking a Senior Software Engineer with deep ...

City National Bank

Data Analyst Senior- VP Python

Newark, DE · On-site

$101K - $172K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Engineer data pipelines and ETL processes that improve reporting timeliness and accuracy * Lead ... Advanced Python proficiency (pandas, NumPy, data processing libraries) * Advanced Tableau skills ...

Fairygodboss

Sr Lead Software Engineer Python

Wilmington, DE · On-site

$180 - $230/hr

  • Medical

  • Retirement

... * DevOps: CI/CD pipelines, infrastructure as code, containerization/orchestration, observability, and cloud platforms AWS, GCP, Azure * Hands‑on experience delivering system design, application ...

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Senior Python Developer information

See Exton, PA salary details

$53.1K

$137K

$188.2K

How much do senior python developer jobs pay per year?

As of Aug 19, 2026, the average yearly pay for senior python developer in Exton, PA is $137,027.00, according to ZipRecruiter salary data. Most workers in this role earn between $117,300.00 and $157,800.00 per year, depending on experience, location, and employer.

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 are the key skills and qualifications needed to thrive as a senior Python developer?

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 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.

Are senior Python developers still in demand?

Senior Python developers remain in high demand due to the language's versatility in web development, data analysis, machine learning, and automation. Companies seek experienced developers with skills in frameworks like Django or Flask, and proficiency in cloud platforms and APIs enhances job prospects.

How much does a senior Python developer make?

A senior Python developer typically earns between $100,000 and $150,000 annually, depending on experience, location, and industry. They often possess strong skills in frameworks like Django or Flask and may hold certifications or advanced degrees that influence salary levels.

What does a senior Python developer do?

A senior Python developer designs, develops, and maintains complex software applications using Python. They often lead projects, review code, optimize performance, and collaborate with cross-functional teams, requiring strong problem-solving skills and knowledge of frameworks like Django or Flask. Additionally, they may mentor junior developers and ensure code quality through testing and best practices.

What job categories do people searching Senior Python Developer jobs in Exton, PA look for?

The top searched job categories for Senior Python Developer jobs in Exton, PA are:

What cities near Exton, PA are hiring for Senior Python Developer jobs?

Cities near Exton, PA with the most Senior Python Developer job openings:

Senior Python Developer jobs near you
Infographic showing various Senior Python Developer job openings in Exton, PA as of August 2026, with employment types broken down into 1% Internship, 86% Full Time, 6% Part Time, and 7% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution, with an average salary of $137,027 per year, or $65.9 per hour.

(Sr./Lead) Engineer I (II)

PJM

Audubon, PA • On-site

$105K - $144K/yr

Full-time

Re-posted 12 days ago

Job description

Flexible Work Arrangement: Hybrid
The transmission planning department is responsible for the development of transmission expansion plan in the PJM interconnection. The (Sr.) Engineer will be working closely and collaboratively with a group of highly skilled team that performs transmission expansion analysis supporting the development of the Regional Transmission Expansion Plan. The Regional Transmission Expansion Plan integrates baseline reliability analyses with market efficiency and interconnection analysis to identify bulk transmission system expansion or enhancement options. The (Sr.) Engineer will also engage in a variety of other adequacy and reliability assessments that support the planning function.
Essential Functions:
  • Have an in-depth understanding of NERC standards that apply to PJM as the Reliability Coordinator, Planning Authority, and Transmission Planner.
  • Ensure that the PJM power system test methods and procedures meet applicable NERC planning standards.
  • Perform power system analysis required in the development of the baseline Regional Transmission Expansion Plan.
  • Identify and evaluate transmission system reinforcements required to resolve reliability and operational constraints and to improve economic efficiency.
  • Perform adequacy and reliability assessments for the PJM system.
  • Identify and assist with the development of new and innovative analysis methods in the planning process.
  • Prepare reports and presentations to support activities of the Transmission Planning Division.
  • Develop recommendations to PJM management on the implementation of new bulk power facilities, programs, procedures, and policies.
  • Develop and maintain the necessary transmission system models required for the development of the Regional Transmission Expansion Plan.
  • Work with transmission owner staff in the development and refinement of the Regional Transmission Expansion Plan.
  • Work with other member of the System Planning Division to solve complex engineering problems.
  • Represent PJM on industry committees, task forces, or stakeholder groups involving topics related to planning and engineering.

Characteristics and Qualifications:
Required:
  • Bachelor's degree in Engineering, Electrical Engineering or equivalent work experience
  • Ability to produce high-quality work products with attention to detail
  • Experience in quantitative and qualitative power system analysis
  • Ability to use mathematical and electrical theory
  • Ability to troubleshoot and provide technical support

Preferred:
  • MS, Engineering
  • Experience with PJM operations, markets, and planning functions
  • At least 5 years of experience with PJM reliability criteria testing methodologies
  • At least 5 years of experience in program development of analytical and automation tools for enhanced reliability criteria testing and screening
  • Ability to understand single-line diagrams
  • Experience using Siemens PSS/e, PowerGEM TARA or similar power system analysis tools
  • Experience with the Python programming language

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