Senior C#/.NET Developer

Job Description:

We are seeking a highly skilled and experienced Full stack Senior Software Engineer with a hybrid skill set combining software development and testing expertise. The candidate must have a strong background in designing, developing, maintaining, and testing scalable SaaS solutions in a cloud environment. As a Senior Software Engineer, you will play a critical role in driving the technical direction of our projects and ensuring the highest quality of our software products.

About Us: Our vision is to accelerate global commerce. We strive to simplify the intricate processes involved in tax compliance, empowering businesses to focus on what they do best - growing their enterprises. We are the market leader for indirect tax determination and compliance for almost half a century, Vertex helps over 4,000 companies around the globe transact, comply, and grow with confidence. We build inclusive teams of industry leaders and fuel their growth. Our culture thrives on collaboration, empowerment, and continuous improvement. We foster a spirit of innovation, and continuous learning, enabling each member of our team to contribute their unique talents and perspectives. Join our team at Vertex, a company consistently recognized as a Top Workplace by the Philadelphia Inquirer for eight consecutive years. 

Key Responsibilities:

Software Development: Design, develop, and maintain high-quality software solutions using C# and .NET technologies.Software Testing: Create test scenarios and design, develop, and execute corresponding automated tests to ensure software functions per specifications.Cloud Infrastructure: Utilize AWS services to architect and manage scalable, secure, and cost-effective cloud infrastructure for SaaS applications.Technical Leadership: Provide technical leadership and mentorship to junior engineers, ensuring best practices in software development and cloud architecture.Collaboration: Work closely with cross-functional teams, including product management, QA, and DevOps, to deliver robust and reliable software solutions.Code Reviews: Conduct thorough code reviews to ensure code quality, performance, and maintainability.Continuous Improvement: Stay current with industry trends and emerging technologies, and actively contribute to continuous improvement initiatives.

Qualifications:

Education: Master’s degree (preferred) or bachelor’s degree in computer science, engineering, or a related field (or equivalent experience).Experience: Minimum of 5 – 8 years of experience in software development and testing, with at least 3 years focusing on SaaS applications.

Skills:

Proficient in C# and .NET framework, Python, and/or Java, with strong experience in AWS services (EC2, S3, Lambda, RDS, CloudFormation) or equivalent Azure/GCP experience. Proficient in RESTful API design and development, and database technologies (SQL and NoSQL). Experience with containerization technologies (Docker, Kubernetes) and CI/CD pipelines for automated, reliable software delivery. Familiarity with front-end technologies (e.g., Angular, React) is a plus.Ability to develop and maintain test automation suites and frameworks.Ability to define test strategies and scenarios, leveraging industry-standard QA testing methodologies and capable of developing automated tests, leveraging API test automation REST (request library/component parameterization) and UI test automation using Selenium or similar tool.Demonstrated problem-solving skills with a track record of tackling complex technical challenges and delivering innovative solutions. Excellent communication and interpersonal skills, with the ability to thrive in a fast-paced, collaborative environment. Strong organizational, presentation, and facilitation skills, with experience mentoring and guiding less experienced developers. Commitment to code quality and best practices, including conducting code reviews and performing Root Cause Analysis (RCA) for critical issues. Proactive in identifying and implementing opportunities for process improvement, enhancing efficiency and productivity. Results-oriented and customer-focused, with a deep understanding of business objectives and customer needs, and a commitment to delivering high-quality products. Agile mentality, staying abreast of emerging technologies and continuously learning and adapting to changing requirements and priorities.

Our Core Values:

Here are the Winning Way behaviors that all Vertex employees embrace every day:

Own the Outcome: Commit to milestones and demonstrate unwavering support for team decisions. If you are unsure, ask! Work with Purpose: Foster a "We Can" mindset where results outweigh effort, everyone understands how their roles contribute to team outcomes. Act with Urgency: Adopt an agile mentality with a focus on quick iterations and resilience. Communicate with Clarity: Be clear, concise, and actionable. Embrace constructive feedback. Drive to Decision: Make decisions swiftly with defined deadlines and accountability.

Preferred Qualifications:

Experience with CI/CD pipelines and DevOps practices.Knowledge of microservices architecture.

Key Skills

• C#
• Azure
• Microservices
• GCP
• .NET Framework
• AWS Lambda