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Senior C# Developer Jobs (NOW HIRING)

Deep Systems

$126K - $166K/yr

Senior Software Engineer Requirements: * Capital Markets Experience - understanding of front ... Partner with Lead Developer and Executive Management on various projects. * Manage individual ...

Lockheed Martin

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 ... Azure DevOps) to automatically compile, run unit/integration tests, and deliver builds for C/C ...

New

Lockheed Martin

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 ...

New

Cymertek

C / C++ / Java Software Developer

Chantilly, VA · On-site

$50.75 - $68.25/hr

... Senior Software Developer, Software Architect, etc. DEGREE (Level Desired) Bachelor's Degree DEGREE (Focus) Computer Science, Software Engineering, Computer Engineering, Information Technology ...

Cymertek

C / C++ / Java Software Developer

Reston, VA · On-site

$51 - $68.75/hr

... Senior Software Developer, Software Architect, etc. DEGREE (Level Desired) Bachelor's Degree DEGREE (Focus) Computer Science, Software Engineering, Computer Engineering, Information Technology ...

Cymertek

C / C++ / Java Software Developer

Honolulu, HI · On-site

$48.50 - $65.25/hr

... Senior Software Developer, Software Architect, etc. DEGREE (Level Desired) Bachelor's Degree DEGREE (Focus) Computer Science, Software Engineering, Computer Engineering, Information Technology ...

Cymertek

C / C++ / Java Software Developer

Aurora, CO · On-site

$50 - $67.25/hr

... Senior Software Developer, Software Architect, etc. DEGREE (Level Desired) Bachelor's Degree DEGREE (Focus) Computer Science, Software Engineering, Computer Engineering, Information Technology ...

Cymertek

C / C++ / Java Software Developer

Tysons, VA · On-site

$49.25 - $66.25/hr

... Senior Software Developer, Software Architect, etc. DEGREE (Level Desired) Bachelor's Degree DEGREE (Focus) Computer Science, Software Engineering, Computer Engineering, Information Technology ...

Cymertek

C / C++ / Java Software Developer

San Antonio, TX · On-site

$44.50 - $60/hr

... Senior Software Developer, Software Architect, etc. DEGREE (Level Desired) Bachelor's Degree DEGREE (Focus) Computer Science, Software Engineering, Computer Engineering, Information Technology ...

Mentor Technical Group

Sr. C&Q Specialist

Juncos, PR · On-site

MTG is recognized for its expertise in life sciences engineering, ensuring compliance with ... Support Commissioning and Qualification (C&Q) activities for plants and equipment. * Develop ...

Mentor Technical Group

Sr. C&Q Specialist

Juncos, PR · On-site

As a world leader in life science engineering and technical solutions, MTG has the knowledge and ... Collaborate with C&Q Engineers to develop and maintain commissioning and qualification procedures ...

AtkinsRéalis

Sr. I&C Engineer

Bothell, WA · On-site

We are seeking a Sr. I&C Engineer to join our team in Bothell, WA. Our Engineering group in Bothell, WA USA is looking for a full-time experienced Senior Instrumentation and Controls (I&C) Engineer ...

SNC-Lavalin

Sr. I&C Engineer

Bothell, WA · On-site

We are seeking a Sr. I&C Engineer to join our team in Bothell, WA. Our Engineering group in Bothell, WA USA is looking for a full-time experienced Senior Instrumentation and Controls (I&C) Engineer ...

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Senior C Developer information

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How much do senior c# developer jobs pay per hour?

As of Aug 12, 2026, the average hourly pay for senior c# developer in the United States is $61.73, according to ZipRecruiter salary data. Most workers in this role earn between $52.40 and $69.23 per hour, depending on experience, location, and employer.

What are the typical responsibilities and projects of a senior C# developer?

Senior C# Developers are often responsible for designing, coding, and maintaining complex software applications while participating in architectural decisions and code reviews. They mentor junior developers, contribute to project planning, and collaborate closely with QA engineers, UI/UX designers, and product managers to deliver high-quality features and enhancements. Common projects may include developing RESTful APIs, integrating third-party services, optimizing application performance, and transitioning legacy systems to modern architectures. You can expect a balance of hands-on coding, technical leadership, and coordinating with various stakeholders to align software solutions with business needs.

What is a senior C# developer?

A Senior C# Developer is an experienced software engineer who specializes in developing applications using the C# programming language within the .NET framework. They design, develop, and maintain complex software solutions while guiding junior developers and ensuring best coding practices. Responsibilities often include system architecture, performance optimization, and troubleshooting issues. Strong knowledge of object-oriented programming, databases, and cloud technologies is essential. Typically, they collaborate with cross-functional teams to deliver high-quality software solutions efficiently.

What are the key skills and qualifications needed to thrive as a senior C# developer?

To thrive as a Senior C# Developer, you need advanced proficiency in C# and the .NET framework, strong problem-solving skills, and experience with software design patterns, typically backed by a bachelor's degree in computer science or related field. Familiarity with tools such as Visual Studio, source control systems like Git, and technologies such as SQL Server and cloud platforms is highly valued, as are certifications like Microsoft Certified: Azure Developer Associate. Excellent communication, mentorship, and teamwork abilities set outstanding candidates apart in this role. These skills and qualities are essential to deliver robust software solutions, guide junior developers, and collaborate effectively in dynamic development environments.

More about Senior C Developer jobs
What are the most commonly searched types of C# Developer jobs? The most popular types of C# Developer jobs are:
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Senior C Developer jobs near you
Infographic showing various Senior C# Developer job openings in the United States as of August 2026, with employment types broken down into 80% Full Time, 3% Part Time, and 17% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution, with an average salary of $128,400 per year, or $61.7 per hour.

Senior C/C++ Software Engineer (Remote)

Deep Systems

Remote

$126K - $166K/yr

Full-time

Re-posted 11 days ago

Job description

Company Info
Deep Systems is a fast-growing Chicago based capital markets technology company whose mission is to deliver and manage cohesive, state-of-the-art, cost-effective, and scalable technology solutions. The solutions we deliver simplify operations, reduce key-person dependencies, and enable our customers to focus on the areas of their business where they derive the most value.


About the Position
We're looking for a highly skilled and adaptable senior C/C++ engineer to join our growing team of highly talented engineers. The ideal candidate will make an immediate impact in a fast-paced and agile environment.


Qualifications
Our team is not focused on degrees or years of experience, however for this senior role the candidate must have a real world and applied understanding of the requirements listed below: 


Senior Software Engineer Requirements:

  • Capital Markets Experience - understanding of front / middle office workflows and trading
  • Low level understanding of hardware and OS
  • Thorough understanding of network protocols (TCP/IP, UDP, etc.)
  • Low latency patterns (NUMA, Core Isolation, etc.)
  • Threading models
  • Developing and debugging on Linux (gdb, valgrind, etc)
  • Comfortable with understanding and implementing protocols (proprietary binary, JSON, etc.)
  • Knowledge of Python and Bash
  • High personal code/development standards (peer testing, unit testing, documentation, etc.
  • Experience w/ low level network card APIs (IB Verbs, SF EF_VI) a plus
  • Git source control experience a plus


Senior Software Engineer Responsibilities:

  • Architecting and developing new software platforms, including but not limited to high-speed trading systems.
  • Identify bottlenecks, troubleshoot bugs, and devise solutions to these problems
  • Help maintain code quality, organization, and automation
  • Partner with Lead Developer and Executive Management on various projects.
  • Manage individual project priorities, deadlines and deliverables.


Position Location

This position does not have any geographic requirements; however, collaboration and coordination with a remote team is required

Employment Type: FULL_TIME

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