Senior .NET /C # Developer YOH Services LLC 401(k) United States, Connecticut, Greenwich Aug 10, 2026

Job Titile:

Senior .NET /C #

Developer Location:

Greenwich CT office every Tuesday and Wednesday.

Terms:

6-12 Months+ contract

Pay Rate:

$90hr - $100/hr Our client is a leading Hedge Fund company and is seeking to integrate next generation, in-house developed based Application with Geneva Platform. (Geneva experience is not Required).

NOTES FROM THE HIRING MANAGER

Seeking a 10 year +C#/.NET Developer /Engineer to do code hands on backend development, API integration, SQL/database experience, messaging, and the ability to build reliable enterprise software. The Developer will help build and enhance custom software that connects internal business applications to Geneva through APIs and integration layers. Refactoring and re-architecting existing systems, API development, data movement, integration design, rigorous testing, and validation. There is some Front-end development in Angular. While being an expert is not required - it would be great at least one of the two candidates have Angular. Detail-oriented engineers with strong technical judgment, ownership mindset, and the ability to work independently without heavy supervision. Key Requirements 10+ years of hands-on software engineering experience, building enterprise applications using C#/.NET Strong backend C#/.NET development experience Strong experience with API integration, including vendor APIs, internal integration layers, REST/web services, or similar patterns Ability to think through data movement, request/response workflows, latency, reliability, and integration performance Strong SQL/database experience Experience with MQ / messaging technologies or asynchronous integration patterns Outstanding hands on coding, debugging, and analytical skills Experience refactoring and re-architecting existing applications Experience with source/version control systems such as Git Familiarity with software development best practices, testing methodologies, validation, and production-quality code Ability to work independently while collaborating effectively within a small team Strong technical judgment, including knowing when to make decisions independently and when to escalate larger design decisions Strong communication skills. Bachelor's or Master's degree in Computer Science, Engineering, or a related discipline Preferred / Plus Skills Experience with Angular or similar modern frontend frameworks Experience with JavaScript / TypeScript (obviously if they have Angular this will be fine Experience with Geneva or Advent Geneva Experience with AWS or other cloud platforms Experience in middle office, back office, investment operations, portfolio accounting, trade processing, reconciliations, or financial services technology Working knowledge of AI-assisted development tooling, with the ability to review, validate, and explain AI-generated code Willingness and flexibility to support occasional off-hours work as needed

Ideal Candidate Profile Estimated Min Rate:

$90.00

Estimated Max Rate:

$100.00 What's In It for You? We welcome you to be a part of the largest and legendary global staffing companies to meet your career aspirations. Yoh's network of client companies has been employing professionals like you for over 65 years in the U.S., UK and Canada. Join Yoh's extensive talent community that will provide you with access to Yoh's vast network of opportunities and gain access to this exclusive opportunity available to you. Benefit eligibility is in accordance with applicable laws and client requirements.

Benefits include:

Medical, Prescription, Dental & Vision Benefits (for employees working 20+ hours per week) Health Savings Account (HSA) (for employees working 20+ hours per week) Life & Disability Insurance (for employees working 20+ hours per week) MetLife Voluntary Benefits Employee Assistance Program (EAP) 401K Retirement Savings Plan Direct Deposit & weekly epayroll Referral Bonus Programs Certification and training opportunities

Note:

Any pay ranges displayed are estimations. Actual pay is determined by an applicant's experience, technical expertise, and other qualifications as listed in the job description. All qualified applicants are welcome to apply. Yoh, a Day & Zimmermann company, is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Visit https:

//www.yoh.com/applicants-with-disabilities to contact us if you are an individual with a disability and require accommodation in the application process. For California applicants, qualified applicants with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. All of the material job duties described in this posting are job duties for which a criminal history may have a direct, adverse, and negative relationship potentially resulting in the withdrawal of a conditional offer of employment. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. By applying and submitting your resume, you authorize Yoh to review and reformat your resume to meet Yoh's hiring clients' preferences. To learn more about Yoh's privacy practices, please see our

Candidate Privacy Notice:

https://www.yoh.com/privacy-notice Stay Safe During Your Job Search Fraudulent recruiting communications have become increasingly common. Emails from Yoh recruiters will only come from an @yoh.com email address. Yoh will never ask candidates to pay fees, purchase equipment, send gift cards, or transfer funds as part of the recruiting or hiring process. If you receive a communication that appears suspicious or requests payment, contact Yoh directly before responding or sharing personal information.