Contractual Freelance Python Programmer Jobs in Illinois

Join a mission-focused team developing innovative software solutions that support critical national security initiatives. As a Senior Software Developer, you will play a key role in designing, developing, and maintaining enterprise applications and web-based solutions that drive operational effectiveness for our customers. Working alongside engineers, architects, and mission stakeholders, you will help deliver scalable, high-performing software while contributing throughout the full software development lifecycle. This role offers the opportunity to solve complex technical challenges, collaborate across multidisciplinary teams, and make a direct impact on mission success.

Responsibilities

• Design, develop, and maintain enterprise software applications in web-based environments.
• Develop, enhance, and modify software solutions to meet evolving customer and mission requirements.
• Analyze user needs and translate functional requirements into effective technical solutions.
• Design and customize software applications to improve operational efficiency and business processes.
• Support database design, development, integration, and maintenance activities.
• Collaborate with cross-functional teams throughout the software development lifecycle.
• Manage and maintain websites and web applications, including deployment and performance optimization.
• Perform software testing, troubleshooting, debugging, and quality assurance activities.
• Participate in code reviews and contribute to development standards and best practices.
• Create and maintain technical documentation, system designs, and software specifications.
• Support application deployment, maintenance, and sustainment activities.
• Work independently or as part of an agile development team to deliver high-quality solutions.

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related field, or equivalent experience.
• 8+ years of software development experience.
• Experience designing, developing, and maintaining enterprise-level software applications.
• Experience developing web-based applications and services.
• Strong understanding of software engineering principles, design patterns, and development methodologies.
• Experience working with relational databases and database design concepts.
• Experience supporting the full Software Development Life Cycle (SDLC).
• Strong analytical, troubleshooting, and problem-solving skills.
• Ability to communicate effectively with technical and non-technical stakeholders.
• Ability to work both independently and within a collaborative team environment.

Preferred Qualifications

• Experience with modern programming languages such as Java, Python, C#, or JavaScript.
• Experience with front-end frameworks such as React, Angular, or Vue.js.
• Experience developing RESTful APIs, microservices, and distributed systems.
• Familiarity with cloud environments including AWS, Azure, or similar platforms.
• Experience with Agile development methodologies and DevSecOps practices.

Position Clearance Requirement:

TS/SCI FSP

Salary and Benefits Information:

The salary range for this position is $147,990.00 to $195,455.00. The proposed range is intended as a general guideline. Final compensation will be determined based on qualifications, experience, location, and contractual considerations and may fall outside of the stated range. We offer a great benefits package designed to support you and your family. View our benefits information here: https://sapns2.com/ns2-mission-careers/

Please be aware many of our positions require the ability to obtain or maintain a U.S security clearance which requires U.S citizenship.

We win with inclusion

NS2 Mission’s culture of inclusion, focus on health and well-being, and flexible working models help ensure that everyone – regardless of background – feels included and can run at their best. At NS2 Mission, we believe we are made stronger by the unique capabilities and qualities that each person brings to our company, and we invest in our employees to inspire confidence and help everyone realize their full potential. We ultimately believe in unleashing all talent and creating a better world.

NS2 Mission is committed to the values of Equal Employment Opportunity and provides accessibility accommodations to applicants with physical and/or mental disabilities. If you are interested in applying for employment with NS2 Mission and are in need of accommodation or special assistance to navigate our website or to complete your application, please send an e-mail with your request to Recruiting Operations Team: NS2Mission.Careers@sapns2.com.

Qualified applicants will receive consideration for employment without regard to their age, race, religion, national origin, ethnicity, age, gender (including pregnancy, childbirth, et al), sexual orientation, gender identity or expression, protected veteran status, or disability, in compliance with applicable federal, state, and local legal requirements.