Senior Software Developer (STK) - Exton, PA (13723)

Category Engineering Hire Type Employee Job ID 13723 Base Salary Range $101000-$151000 Remote Eligible No Date Posted 01/05/2026

We Are:

At Synopsys, we drive the innovations that shape the way we live and connect. Our technology is central to the Era of Pervasive Intelligence, from self-driving cars to learning machines. We lead in chip design, verification, and IP integration, empowering the creation of high-performance silicon chips and software content. Join us to transform the future through continuous technological innovation. 

You Are:

You are a passionate and innovative software developer driven by curiosity and a desire to solve complex real-world problems. You thrive in dynamic, collaborative environments where you can make a tangible impact. Your expertise in C++ and Visual Studio is complemented by hands-on experience in the commercial software development lifecycle, ideally with a focus on modeling and simulation software. 

Your approach to work is analytical and detail-oriented, always seeking out best practices and innovative solutions to technical challenges. You are a fast learner, eager to engage with subject matter experts and cross-functional teams, and value open communication and knowledge sharing. Your commitment to quality, reliability, and continuous improvement ensures that the products you help develop meet the highest standards. 

You are excited by the opportunity to support a globally recognized product like Systems Tool Kit, contributing to projects that enable customers to achieve extraordinary feats, from satellite navigation to lunar exploration. Most importantly, you are motivated by a sense of purpose and a desire to be part of a company that values diversity, collaboration, and personal growth.

This opportunity is based in Exton, PA and it requires compliance with U.S. government security and/or access requirements. As a result, only U.S. citizens are eligible for this position. 

What You’ll Be Doing:

• Contributing as a core member of the capability development team, designing, developing, testing, and documenting new features for the STK software platform.
• Investigating and resolving complex technical issues discovered by QA or product support, ensuring a robust and reliable user experience.
• Championing and implementing best practices in commercial software development, with a focus on maintainability, scalability, and performance.
• Working to reduce the backlog of existing bugs and driving architecture improvements for long-term product evolution.
• Collaborating closely with multidisciplinary teams, including PhD-level experts in aerospace, imaging, radar, and related fields, to deliver innovative solutions.
• Engaging in continuous learning and knowledge sharing, staying up-to-date with advancements and software engineering methodologies.

The Impact You Will Have:

• Enhancing the capabilities and reliability of STK, a mission-critical tool used by thousands of organizations worldwide in aerospace, defense, and research.
• Enabling customers to solve complex challenges such as communication link analysis, satellite mission planning, and celestial navigation.
• Accelerating the development of new features that expand the range of STK’s applications, from Earth observation to deep space missions.
• Improving the user experience and confidence in STK through timely resolution of issues and proactive product improvements.
• Contributing to a culture of technical excellence, innovation, and knowledge sharing within the team and across the organization.
• Empowering future advancements in simulation and modeling that drive the next generation of aerospace and defense technologies.

What You’ll Need:

• Bachelor’s degree in Computer Science, Engineering, or a related field with 2 years' experience or Master's degree.
• Strong proficiency in C++ and experience with Visual Studio development environments.
• Experience with the commercial software development lifecycle, including design, implementation, testing, and documentation.
• Modeling and simulation experience, particularly in aerospace and defense applications, is highly desirable.

Who You Are:

• A collaborative team player who communicates effectively and values diverse perspectives.
• Analytical, detail-oriented, and committed to delivering high-quality work.
• Adaptable and eager to learn new technologies and methodologies quickly.
• Proactive in seeking feedback and continuously improving both technical and interpersonal skills.
• Motivated by curiosity, creativity, and a desire to make a real-world impact.

The Team You’ll Be A Part Of:

You’ll join a dynamic, multidisciplinary team of engineers and scientists dedicated to advancing the capabilities of STK, Synopsys’ flagship mission modeling and simulation product. Our team thrives on collaboration, innovation, and a shared commitment to solving some of the most challenging problems in aerospace, defense, and research. You’ll have the opportunity to work alongside industry experts and contribute to a product that is trusted by organizations around the world. It would be nice if this incorporated what Ansys does as a leader in engineering simulation software.

Rewards and Benefits:

We offer a comprehensive range of health, wellness, and financial benefits to cater to your needs. Our total rewards include both monetary and non-monetary offerings. Your recruiter will provide more details about the salary range and benefits during the hiring process. 

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At Synopsys, we want talented people of every background to feel valued and supported to do their best work. Synopsys considers all applicants for employment without regard to race, color, religion, national origin, gender, sexual orientation, age, military veteran status, or disability.

In addition to the base salary, this role may be eligible for an annual bonus, equity, and other discretionary bonuses. Synopsys offers comprehensive health, wellness, and financial benefits as part of a competitive total rewards package. The actual compensation offered will be based on a number of job-related factors, including location, skills, experience, and education. Your recruiter can share more specific details on the total rewards package upon request. The base salary range for this role is across the U.S.