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Senior C# Jobs (NOW HIRING)

Software Engineer Sr C/C++

Manassas, VA · On-site

$122K - $161K/yr

The Work Lockheed Martin Rotary and Mission Systems is seeking a Software Engineer C/C++ Sr. in Manassas, VA. In this role you will have the responsibility of: Participate in a crossfunctional team ...

Senior C/C++ Linux Engineer

Philadelphia, PA · On-site

$123K - $163K/yr

Design, develop, and maintain real-time, fault-tolerant C/C++ applications on Linux platforms * Migrate legacy GUIs from Motif/X11 to modern toolkits (GTK, Qt, EFL) using Wayland protocols * Write ...

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Senior C information

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$25K

$80.3K

$163.5K

How much do senior c# jobs pay per year?

As of Jun 5, 2026, the average yearly pay for senior c# in the United States is $80,287.00, according to ZipRecruiter salary data. Most workers in this role earn between $41,500.00 and $103,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Senior C# Developer, and why are they important?

To thrive as a Senior C# Developer, you need a deep understanding of C# programming, object-oriented design, and software development principles, typically backed by a degree in computer science or related experience. Expertise in .NET frameworks, version control systems like Git, and familiarity with cloud platforms or CI/CD tools is commonly required, along with relevant certifications such as Microsoft Certified: Azure Developer Associate. Strong problem-solving, leadership, and communication skills help you manage complex projects and mentor junior developers. These competencies ensure efficient software delivery, high code quality, and effective team collaboration in demanding technical environments.

What are some common challenges faced by Senior C# developers when working on large-scale enterprise applications?

Senior C# developers often encounter challenges such as managing complex codebases, ensuring high performance, and maintaining scalability in large-scale enterprise applications. They are also responsible for implementing best practices in code architecture, integrating with various systems, and mentoring junior team members. Collaboration with cross-functional teams—such as QA, DevOps, and UI/UX designers—is essential to deliver robust and maintainable solutions, making strong communication and problem-solving skills vital for success in this role.

What are Senior C# developers?

Senior C# developers are experienced software engineers who specialize in using the C# programming language to design, develop, and maintain complex software applications. They often take on leadership roles within development teams, mentor junior developers, and contribute to architectural decisions. Their expertise usually covers a wide range of technologies related to the .NET ecosystem, and they are responsible for ensuring code quality, performance, and scalability in software projects.

What is the difference between Senior C# vs .NET Developer?

AspectSenior C#.NET Developer
Required CredentialsBachelor's in CS or related, experience in C#Bachelor's in CS or related, experience in .NET framework
Work EnvironmentSoftware development teams, enterprise applicationsWeb, desktop, or enterprise app development teams
Industry UsageUsed across industries for backend developmentUsed in similar industries, often overlapping with C# roles
Search & Comparison IntentOften compared for backend and application development rolesCommonly compared with Senior C# for similar development tasks

Senior C# developers focus specifically on advanced C# programming within various projects, while .NET Developers work broadly with the .NET framework, which includes C# but also other languages. Both roles require similar credentials and are used in comparable work environments, making them frequently compared by employers and job seekers.

More about Senior C jobs
What are the most commonly searched types of C# jobs? The most popular types of C# jobs are:
What states have the most Senior C# jobs? States with the most job openings for Senior C# jobs include:
Senior C&Q Validation Engineer - GMP Analytical & Process Equipment- (JP15147)

Senior C&Q Validation Engineer - GMP Analytical & Process Equipment- (JP15147)

3 Key Consulting

Thousand Oaks, CA • Hybrid

$60 - $65/hr

Full-time

Posted 5 days ago


Job description

Job Title:   Senior C&Q Validation Engineer – GMP Analytical & Process Equipment- (JP15147)
Location: Thousand Oaks, CA. 91320 (Hybrid)
Employment Type: Contract
Business Unit: Engineering Systems
Duration: 1+ year (with likely extensions and/or conversion to permanent)
Posting Date: 03/31/26
Pay Rate: $60 - $65/hour W2
Notes: Only qualified candidates need apply. On site at least 3 days weekly 8-5
3 Key Consulting is hiring a Senior C&Q Validation Engineer – GMP Analytical & Process Equipment for a consulting engagement with our direct client, a leading global biopharmaceutical company.
Job Description:
Primarily responsible for leading and/or executing commissioning and qualification activities on new or modified GMP analytical and process equipment, utilities, and facilities. Responsibilities include generating/reviewing/executing C&Q protocols, plans, and summary reports. Works with project teams and SMEs to develop testing strategies. Participates in project meetings to inform stakeholders on progress of C&Q activities.  Key skills include: 
  • Demonstrable experience in a pharmaceutical, biotech, or life science organization in a C&Q/CQV role.
  • Knowledge of cGMP commissioning/qualification/validation practices.
  • Familiarity with Kneat Gx Platform or other digital C&Q systems.
  • Experience working with cross-functional stakeholders.
  • Knowledge of quality assurance principles.
  • Experience working within project teams and multiple projects in parallel.
  • Effective communication skills, both verbal and written.
  • Able to think analytically with the ability to resolve issues.
  • Able to manage own time efficiently.

Why is the Position Open?
Supplement additional workload on team
Top Must Have Skills:
  • Experience in commissioning/qualification/validation
  • Experience in a GMP environment
  • Experience with analytical instruments (Benchtop laboratory equipment)

Day to Day Responsibilities:
  • Plan and track implementation of commissioning & qualification actions/documentation versus project(s) timelines.
  • Work with project teams to develop the commissioning and qualification strategy and document in qualification plans.
  • Generate/evaluate qualification/validation protocols including IQ, OQ, FT, PQ protocols and final reports for new or modified GMP analytical and process equipment, utilities, and facilities.
  • Execute IQ, OQ, FT, PQ protocols, which may involve protocol discrepancies, investigation, and corrective action activities for new or modified GMP analytical and process equipment, utilities, and facilities.
  • Ensure that Qualification/Validation plans are generated and updated for all ongoing projects.
  • Prepare, evaluate and approve technical and GMP linked documentation such as URS, FMEA, impact/risk assessment, master plans, qualification/validation documentation.
  • Develop and/or execute FAT/SAT and other commissioning activities for new GMP systems in collaboration with both internal and external partners.

Basic Qualifications:
Doctorate degree OR Masters degree and 2 years of experience OR Bachelors degree and 4 years of experience OR Associates degree and 8 years of experience OR High school diploma / GED and 10 years of experience
Red Flags:
Short tenures at previous jobs (-2 years), not local and not willing to relocate
Interview process:
1 video conference interview (Teams), potential follow-up interview
We invite qualified candidates to send your resume to resumes@3keyconsulting.com.  If you decide that you’re not interested in pursuing this particular position, please feel free to take a look at the other positions on our website www.3keyconsulting.com/careers. You are also welcome to share this opportunity with anyone you think might be interested in applying for this role.