Senior C# Full-Stack Engineer (Hybrid, Contractor)

28Stone; Town of Greenwich (NY); Hybrid; USD 110,000 - 165,000; Full time

Job summary

28Stone is a full service custom solutions firm recruiting seasoned engineers for modernization and new system development in financial services contexts. The role emphasizes strong technical judgment and ownership, with a focus on delivery excellence.

Contractor position (C2C) with 7+ years of experience, potential rates $80-$120/hour, and a hybrid work model in the Greenwich, CT area requiring 2-3 days in-office.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related discipline
• 7+ years of web app development with C# and JavaScript/TypeScript
• Experience building mission-critical business applications
• Ability to work independently and in a team
• Experience with Angular or other web frameworks
• 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

Skills

Web apps with C# & TS

Strong communication

Independent yet team player

Education

Bachelor’s or Master’s in CS/Engineering

Tools

Angular

AWS

AI tooling

SQL databases

MQ

Git

Job description

28Stone is a full service custom solutions firm.We offer a wide range of services - from ‘tip of the spear’ advisory, application design, system architecture to implementation, testing and deployment.

We partner with the world’s leading financial institutionsto design and build robust financial applications that improve their business performance while reducing system risk, cost and time to market.

We develop technology of value:we are proud of our proven track record of delivering quality results and the trust our clients place in us with ongoing, repeat engagements.

Role Summary

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.

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related discipline

• 7+ Years of work experience building web applications with C# and JavaScript/TypeScript

• Experience building mission-critical business applications

• Ability to work independently and collaborate in a team

• Experience with Angular or other web frameworks

• 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

Employment Details:

• This is a contractor position only (C2C).
• Looking for individuals with 7+ years of experience.
• Compensation ranges from $70-100 per hour based on experience and qualifications. Higher rates may be considered for exceptionally strong candidates.
• Candidates should be local or ready to relocate asap to theGreenwich, CT Area and can work in a hybrid model (2-3 days in the office.) - this is mandatory requirement.

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.

The Company may use AI tools to support candidate sourcing, CV screening and evaluation based on job-related criteria. AI is used only as a support tool; all candidate assessments and hiring decisions remain human-led.

The Company ensures responsible, fair and transparent use of AI in compliance with applicable laws, including GDPR and anti-discrimination requirements. Candidates may request further information about AI use and exercise their data protection rights as outlined in the Privacy Notice.

Only candidates who have the right to work in USA are considered for this position.