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Contract Sr Python Developer Jobs in Wilmington, DE

Senior AWS DevOps Engineer

Malvern, PA · On-site

$127K - $163K/yr

Python programming skills for automation, scripting, deployment tools, API integration, and operational tasks. * Hands-on experience with Infrastructure as Code (IaC) using Terraform and/or AWS ...

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 ...

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 ...

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 ...

Senior AI/ML Engineer

Philadelphia, PA

$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 ...

Showing results 21-40

Contract Sr Python Developer information

See Wilmington, DE salary details

$53.4K

$137.8K

$189.2K

How much do contract sr python developer jobs pay per year?

As of Aug 21, 2026, the average yearly pay for contract sr python developer in Wilmington, DE is $137,768.00, according to ZipRecruiter salary data. Most workers in this role earn between $117,900.00 and $158,700.00 per year, depending on experience, location, and employer.

What does a Contract Sr Python Developer do?

A Contract Sr Python Developer is an experienced software engineer hired on a temporary or project basis to design, develop, and maintain applications using the Python programming language. They often work on complex projects, lead technical teams, and ensure high-quality code and best practices. Their responsibilities may include system architecture, code reviews, mentoring junior developers, and collaborating with other departments to deliver robust solutions.

What are some common challenges faced by a Contract Sr Python Developer when integrating with existing systems?

As a Contract Sr Python Developer, one of the most common challenges is quickly understanding and adapting to legacy codebases and existing system architectures. You may encounter outdated documentation, varying coding standards, or integration points that require creative problem-solving. Effective communication with the in-house development team and stakeholders is crucial to clarify requirements, resolve ambiguities, and ensure smooth interoperability. Staying organized and proactive in addressing potential compatibility or security issues will help you deliver robust solutions within tight project timelines.

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

To thrive as a Contract Sr Python Developer, you need advanced proficiency in Python programming, strong understanding of software development principles, and significant experience with backend frameworks and APIs. Familiarity with tools such as Django or Flask, version control systems like Git, and cloud platforms (e.g., AWS or Azure) is typically expected, along with a relevant degree or equivalent professional experience. Exceptional problem-solving ability, effective communication skills, and the capacity to work independently or in distributed teams distinguish top performers in this role. These skills ensure you can deliver high-quality, scalable solutions while collaborating efficiently in dynamic contract environments.

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

AspectContract Sr Python DeveloperContract Python Developer
Experience LevelSenior, with several years of experienceEntry to mid-level, with less experience
ResponsibilitiesDesigning complex systems, leading projectsImplementing features, supporting existing code
Required SkillsAdvanced Python, system architecture, mentorshipBasic to intermediate Python, scripting
Work EnvironmentFast-paced, often in larger teams or projectsSmaller projects, more hands-on coding

The main difference between a Contract Sr Python Developer and a Contract Python Developer lies in experience, responsibilities, and skill level. Senior developers typically handle complex tasks and lead projects, while entry-level developers focus on coding and support. Both roles are common in tech industries, but the senior role demands more expertise and leadership.

What are popular job titles related to Contract Sr Python Developer jobs in Wilmington, DE?

For Contract Sr Python Developer jobs in Wilmington, DE, the most frequently searched job titles are:

What job categories do people searching Contract Sr Python Developer jobs in Wilmington, DE look for?

The top searched job categories for Contract Sr Python Developer jobs in Wilmington, DE are:

Contract Sr. Frontend Engineer

Waters Corporation

New Castle, DE • Hybrid

$118K - $162K/yr

Contractor

Re-posted 9 days ago


Job description

TA Instruments is a world leading Scientific Instrumentation company with a focus on Material Characterization. 

Our instruments are pivotal in: Electric Cars, 3D Printing, batteries, recyclable plastics, space suits, candy that melts in your mouth and not your hands, paint that goes on smooth and dries without streaks, even ensuring your French fries have the perfect crunch to them!  Material Science uniquely spans the fields of physics, chemistry, engineering, and manufacturing. 

Our instruments and software come together to aid in accelerating the design of new materials as well as the quality of manufacturing those materials.

We are looking for an experienced Sr. FrontEnd Engineer to join our Research and Development organization and contribute to the continued success of our Thermal Analysis and Rheology products.

This is a hybrid contract position (Requiring on-site for three days a week)


As a Software Engineer you will:

  • Research, design, develop and release/maintain: User interface, Data analysis, Instrument control software for thermal analysis, rheological, and calorimetric instruments.
  • Work within a formal development process covering the full development lifecycle.
  • Provide code and supporting documentation in accordance with the coding guidelines, quality processes and applicable procedures, including team's definition of done.
  • Keep a pro-active attitude to ensure continuous improvement of the software quality, work process and individual skills.
  • Provide contributions to the application architecture with a focus on scalability, maintainability, and performance.
  • Develop and maintain scalable, responsive web applications using ReactJS and TypeScript.
  • Work closely with UX/UI designers, back end engineers, product managers, and Test Automation team to translate requirements into technical implementations.
  • Build and extend reusable component libraries and adhere to established design systems.
  • Optimize application performance for fast load times and smooth user interactions.
  • Participate in code reviews, sharing constructive feedback with peers.
  • Write unit and integration tests to ensure code quality and reliability.
  • Troubleshoot and resolve technical issues, collaborating with the team to maintain application stability.
  • Stay informed about emerging front end trends, tools, and technologies, and suggest improvements.

 As a Team Member you will:

  • Participate in all team meetings and ceremonies in direct collaboration with other sites, provide input and feedback, take ownership on identified improvements.
  • Actively participate in learning and sharing activities either during informal or formal training and demos.
  • Demonstrate continuous technical improvement.

Education:

  • You have a Bachelors Degree (preferably in a science related subject or in engineering)

Experience:

  • 5+ years of professional front-end development experience.
  • 5+ years of hands-on experience with ReactJS in production environments.
  • Strong proficiency in TypeScript, including advanced typing, generics, and interfaces.
  • Deep understanding of HTML5, CSS3, and modern layout techniques.
  • Experience with state management libraries.
  • Familiarity with front end build tools and bundlers.
  • Proficient in writing unit and integration tests using frameworks.
  • Experience with RESTful APIs integration.
  • Solid understanding of web accessibility standards (WCAG) best practices.
  • Excellent problem-solving skills and attention to detail.

Desired:

  • Experience with server-side rendering frameworks.
  • Knowledge of CI/CD pipelines and infrastructure as code.
  • Familiarity with design tools (Figma) and collaborating with design teams.
  • Experience with performance monitoring and analytics tools.
  • Familiarity with TailWind & ReactQuery.
  • Strong communication skills and ability to work effectively in cross-functional teams.
For you it’s more than a job. Among other things we’re strong advocates of creating quality software, and using the latest testing methodologies to ensure we meet the expectations of our customers.

Waters Corporation (NYSE:WAT) is a global leader in life sciences and diagnostics, dedicated to accelerating the benefits of pioneering science through analytical technologies, informatics, and service. With a focus on regulated, high-volume testing environments, our innovative portfolio harnesses deep scientific expertise across chemistry, physics, and biology. We collaborate with customers around the world to advance the release of effective, high-quality medicines, ensure the safety of food and water, and drive better patient outcomes by detecting diseases earlier, managing routine infections, and combating antibiotic resistance. Through a shared culture of relentless innovation, our passionate team of ~16,000 colleagues turn scientific challenges into breakthroughs that improve lives worldwide. 

Diversity and inclusion are fundamental to our core values at Waters Corporation. It benefits our employees, our products, our customers and our community. Waters complies with all applicable federal, state, and local laws. Qualified applicants are considered without regard to sex, race, color, ancestry, national origin, citizenship status, religion, age, marital status (including civil unions), military service, veteran status, pregnancy (including childbirth and related medical conditions), genetic information, sexual orientation, gender identity, legally recognized disability, domestic violence victim status, or any other characteristic protected by law. Waters is proud to be an equal opportunity workplace and is an affirmative action employer. All hiring decisions are based solely on qualifications, merit, and business needs at the time.