C# Server Side Developer

28Stone

C# Server Side Developer modernizing and replacing existing systems for financial services operations. Seeking seasoned engineers with technical judgment and ownership mindset.

Posted 7/13/2026contractGreenwich • Connecticut • 🇺🇸 United StatesSeniorLead💰 $100 - $140 per hourWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in building server-side applications using C#, with a strong focus on modernization of systems in financial services. Possesses outstanding coding, debugging, and analytical skills, complemented by effective communication and collaboration abilities.

Highest-signal resume keywords

C# Application DevelopmentServer-Side DevelopmentSQL Database ManagementAWS Cloud ServicesSource Control with Git

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

C#Server-Side ApplicationsSQLMQAI Development ToolingCoding SkillsDebugging SkillsAnalytical SkillsSoftware Development Best Practices

Soft Skills

Detail-OrientedGood Communication SkillsTeam CollaborationIndependent Work

Tools & Technologies

AWSGitVersion Control Systems

Certifications & Qualifications

Bachelor’s Degree in Computer ScienceMaster’s Degree in Engineering

Industry Keywords

Financial ServicesMission-Critical ApplicationsSystems ModernizationOperations Processes

Tech Stack

Tools & technologies

AWSCloudSQL

About the role

Key responsibilities & impact

We are looking for seasoned, detail-oriented engineers with strong technical judgment and an ownership mindset.
The role is focused on modernization or replacement of existing systems and development of new systems to support financial services operations processes.

Requirements

What you’ll need

Bachelor’s or Master’s degree in Computer Science, Engineering, or related discipline
7+ Years of work experience building server side / back-end applications and services with C#
Experience building mission-critical business applications
Ability to work independently and collaborate in a team
Experience with AWS or other cloud providers is a plus
Experience with AI development tooling is a plus
Experience with SQL databases
Experience with MQ
Outstanding coding, debugging, and analytical skills
Good communication skills
Experience with Source / Version control systems such as Git
Familiarity with software development best practices

Benefits

Comp & perks

This is a contractor position only (C2C).
Looking for individuals with 7+ years of experience.
Compensation ranges from $100-140 per hour based on experience and qualifications. Higher rates may be considered for exceptionally strong candidates.
Candidates should be local to the Greenwich, CT Area and can work in a hybrid model (2-3 days in the office.)
We are flexible and take an individualized approach with each candidate we meet, so we encourage you to apply even if you do not meet every listed requirement.
Only candidates who have the right to work in USA are considered for this position.