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Senior C# .Net Backend Software Engineer

Job in Boston, Suffolk County, Massachusetts, 02298, USA
Listing for: Zelis
Full Time position
Listed on 2026-01-12
Job specializations:
  • Software Development
    Software Engineer, Full Stack Developer
Salary/Wage Range or Industry Benchmark: 200000 - 250000 USD Yearly USD 200000.00 250000.00 YEAR
Job Description & How to Apply Below

Senior C# .Net Backend Software Engineer

Join to apply for the Senior C# .Net Backend Software Engineer role at Zelis
.

Position Overview

The Senior C# .Net Backend Software Engineer will focus on developing information technology-enabled business solutions that are both scalable and reliable. The Senior Software Engineer will perform and execute all phases of the Software Development Lifecycle including Analysis, Design, Development, and Testing while working in a highly collaborative team environment.

Join our team as a Senior C# .Net Backend Software Engineer
, where you’ll help lead initiatives for continuous improvement, mentor junior engineers, and drive strategies that enhance overall team performance.

Location and Workplace Flexibility

Position is remote but you must be located within 50 miles of a Zelis location.

Zelis locations:

  • Boston, MA
  • Morristown, NJ
  • Atlanta, GA
  • St. Petersburg, FL
  • Plano, TX
  • St. Louis, MO
What You’ll Do
  • Design, develop, and maintain software applications and systems using best practices and industry standards.
  • Write clean, efficient, and well-documented code.
  • Participate in code reviews to ensure code quality and adherence to coding standards.
  • Work closely with product management, quality assurance, and operations teams to understand requirements and deliver high-quality software solutions.
  • Communicate effectively with team members and stakeholders to provide updates on project progress and address any issues or concerns.
  • Participate in team meetings, including daily stand-ups, sprint planning, and retrospectives.
  • Identify and troubleshoot software defects and issues.
  • Perform root cause analysis and implement solutions to resolve problems.
  • Continuously improve software performance, reliability, and scalability.
  • Develop and execute unit tests, integration tests, and automated tests to ensure software quality.
  • Collaborate with the quality assurance team to identify and resolve defects.
  • Ensure that software meets functional and non-functional requirements.
  • Stay current with industry trends, technologies, and best practices in software engineering.
  • Contribute to the continuous improvement of development processes, tools, and methodologies.
  • Mentor and support junior engineers, providing guidance and sharing knowledge.
Required Experience
  • 5+ years software development experience.
  • Must have C# & .Net development experience.
  • SQL:
    Stored procedures, triggers, indexes, and views.
  • AI – Co-Pilot, ChatGPT, or similar AI platform.
  • Must have experience and understanding of software development principles, design patterns, and best practices.
  • Experience with version control systems (e.g., Git).
Preferred/Helpful Experience
  • Backend:
    JavaScript, Java, Python or Spring experience helpful.
  • Front end:
    Blazor, Angular, or React experience helpful.
  • Knowledge of No

    SQL, WCF, Azure/AWS experience a plus.
  • Excellent problem-solving and debugging skills.
  • Knowledge of Agile and Scrum methodologies.
  • Relevant certifications in software development or related fields are a plus (e.g., AWS Certified Developer, Microsoft Certified: Azure Developer Associate).
  • SQL:
    Stored procedures, triggers, indexes, and views.
  • AI – Co-Pilot, ChatGPT, or similar AI platform.
  • Must have experience and understanding of software development principles, design patterns, and best practices.
  • Experience with version control systems (e.g., Git).
Visa Sponsorship

Please note at this time we are unable to proceed with candidates who require visa sponsorship now or in the future.

Base Salary Range

$ - $

Equal Employment Opportunity

Zelis is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

We welcome applicants from all backgrounds and encourage you to apply even if you don’t meet 100% of the qualifications for the role. We believe in the value of diverse perspectives and experiences and are committed to building an inclusive workplace for all.

Accessibility Support

We are dedicated to ensuring our application process is accessible to all candidates. If you are a qualified individual with a disability or a disabled veteran and require a reasonable accommodation with any part of the application and/or interview process, please email

Disclaimer

The above statements are intended to describe the general nature and level of work being performed by people assigned to this classification. They are not to be construed as an exhaustive list of all responsibilities, duties, and skills required of personnel so classified. All personnel may be required to perform duties outside of their normal responsibilities, duties, and skills from time to time.

Seniority

Level

Mid-Senior level

Employment Type

Full-time

Job Function

Engineering and Information Technology, Professional Services

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Position Requirements
10+ Years work experience
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